WO1996020565A1 - Dispositif et procede de transmission de donnees - Google Patents
Dispositif et procede de transmission de donnees Download PDFInfo
- Publication number
- WO1996020565A1 WO1996020565A1 PCT/JP1995/002758 JP9502758W WO9620565A1 WO 1996020565 A1 WO1996020565 A1 WO 1996020565A1 JP 9502758 W JP9502758 W JP 9502758W WO 9620565 A1 WO9620565 A1 WO 9620565A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- time
- block
- stream
- order
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17309—Transmission or handling of upstream communications
- H04N7/17336—Handling of requests in head-ends
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26275—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for distributing content or additional data in a staggered manner, e.g. repeating movies on different channels in a time-staggered manner in a near video on demand system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47208—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting near-video-on-demand content
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
- H04N21/6587—Control parameters, e.g. trick play commands, viewpoint selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
Definitions
- the present invention relates to a data transmission device and a method used for services such as video “on” demand (hereinafter, also referred to as VOD), and more particularly, to audio,
- VOD video “on” demand
- the present invention relates to a data transmission device and method and a data receiving device S and a method capable of transmitting information such as a plane image and a computer program in a special mode such as fast forward, rewind, and pause.
- This service is transmitted instantaneously over a network by requesting a large amount of data at a remote location.
- the data includes all types of information that can be transmitted, such as audio, images, and computer programs.
- V 0 D is a service that stores large amounts of video data, such as movie screens and TV programs, on a server composed of recording media such as a large-capacity hard disk, and transmits the data instantly via a network in response to a transmission request from a viewer. It is.
- the glucometer can issue a special playback request at any time.
- trick play refers to operations such as pause, fast forward, and rewind.
- V 0 D service There are several possible ways to provide V 0 D service, but this time Let's consider the method of using the same data series by shifting. Hereinafter, this method will be briefly described.
- FIG. 1 shows the time-series data 5, which is divided into blocks 6 for each fixed time t.
- FIG. 2 shows a transmission state when a transmission request of the same time series data 5 generated at an arbitrary time is quantized for a certain time t.
- Output data flow (hereinafter also referred to as stream) 30 is time-series data transmitted in response to a transmission request generated at time t30, and streams 31 to 37 are transmitted at times t31 to t37, respectively. This is the time-series data that is sent in response to the sending request generated in.
- trick play can be realized by changing the reading position from the recording device.
- the present invention has been made in view of the above-described problems of the related art, and has been developed to provide a data transmission device, a method thereof, and a data reception device and a method capable of appropriately responding to the same data transmission request even when the same data transmission request is concentrated.
- the purpose is to provide.
- a predetermined amount of a plurality of segment data constituting the block data is transmitted.
- a rearrangement unit that rearranges the order in a predetermined pattern in a corresponding block data unit; a selection unit that selects one from a plurality of the rearranged time-series data; and the selected time-series data.
- Reordering means for restoring the order of the segment data in units of the block data.
- the selecting means sequentially switches one of the rearranged plurality of time-series data at a predetermined time interval according to a predetermined double speed. select.
- the rearranging means reverses the number assigned when the segment data included in the block data is numbered in n-ary order in time order.
- the pattern that arranges the segment data at the position corresponding to the number read in the direction is used to rearrange the order of the segment data.
- the rearranging unit is configured such that the time-series data restored by the re-arranging unit is arranged at regular intervals in the time-series data before the rearrangement. The order of the segment data is rearranged by using different patterns between adjacent block data so that the block data is composed of segments.
- the data transmission method of the present invention may include, for a plurality of time-series data of the same content transmitted by being shifted in time by a predetermined amount of block data, a predetermined amount of a plurality of segment data constituting the block data.
- the order is rearranged in a predetermined pattern, one is selected from the rearranged plurality of time-series data, and the order of the segment data of the selected time-series data is selected. Is restored in units of the block data.
- the selection of the time-series data is performed at a predetermined time interval according to a predetermined double speed, and a plurality of the rearranged time-series data is selected from one or more. Are sequentially switched.
- the pattern of rearrangement of the order of the segment data is such that the segment data included in the block data is numbered by n-ary in order of time.
- the segment data is arranged at a position corresponding to the number read in the opposite direction.
- the rearrangement of the segment data is performed in such a manner that the restored time-series data is located at a predetermined interval in the time-series data before the rearrangement. This is done using different patterns between adjacent block data.
- a request to receive predetermined time-series data is issued from a user, a plurality of identical contents which are shifted in time by block data of a predetermined time in the rearranging means.
- a plurality of segment data for a predetermined time constituting the block data are stored in the corresponding block data.
- the order can be rearranged in a predetermined pattern on an overnight basis.
- one of the rearranged plurality of time-series data is selected by a selection unit.
- the reordering means the order of the segment data of the selected time-series data is restored in units of the block data, and the restored time-series data is transmitted to the user.
- the data transmission device and the method thereof according to the present invention have the selection means, they can be selected from a plurality of streams at any time as required.
- variable speed special reproduction is enabled by rearranging and restoring the order of segments.
- high-quality special reproduction is enabled by changing the segment data rearrangement pattern for each block data.
- the data receiving apparatus of the present invention is a data receiving apparatus that selectively receives a plurality of time-series data of the same content transmitted with a time lag by a predetermined amount of blocks.
- a predetermined amount of a plurality of segment data, each of the plurality of time-series data, the order of the plurality of segment data is rearranged into a predetermined pattern in a corresponding block data unit,
- a selecting means for selecting one from a plurality of time-series data subjected to the rearrangement and a re-ordering means for restoring the order of the segments of the selected time-series data in units of the block data.
- the selecting means sequentially switches and selects one from the rearranged plurality of time-series data at a predetermined time interval according to a predetermined double speed. I do.
- the data receiving method of the present invention is directed to a data receiving method for selectively receiving a plurality of time-series data having the same contents transmitted with a time lag by a predetermined amount of blocks.
- the block data is composed of a predetermined amount of a plurality of segment data, and each of the plurality of time-series data has an order of the plurality of segment data in a predetermined pattern in a corresponding block data unit.
- One of the rearranged time-series data that has been rearranged is selected, and the order of the selected time-series data segments is restored in units of the block data.
- the selection of the time-series data is performed at predetermined time intervals according to a predetermined double speed, and sequentially selects one from the rearranged plurality of time-series data. Switch and perform. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a diagram for explaining time-series data.
- Fig. 2 is a diagram for explaining the timing when transmitting time-series data.
- Fig. 3 is a diagram for explaining a point where data is simultaneously transmitted when a plurality of accesses occur in the time-series data.
- FIG. 4 is a configuration diagram of a data transmission device according to an embodiment of the present invention.
- FIG. 5 is a diagram for explaining a segment serving as a processing unit in the embodiment of the present invention.
- FIG. 6 is a diagram for explaining a change in a data transmission position on time-series data due to stream switching according to the embodiment of the present invention.
- FIG. 7 is a diagram for explaining the segment rearrangement process in the sequence rearrangement device shown in FIG.
- FIG. 8 is a diagram for explaining the relationship between the time-series data before segment rearrangement and the time-series data after segment rearrangement.
- FIG. 9 is a configuration diagram of the order replacement device.
- FIG. 10 is a diagram for explaining a rearrangement process in the case of 1 ⁇ speed reproduction in the order permutation apparatus shown in FIG.
- FIG. 11 is a configuration diagram of the selection device shown in FIG. 4,
- FIG. 12 is a diagram for explaining a process of returning the arrangement of segments in the order reordering device.
- FIG. 13 is a diagram for explaining the relationship between the time-series data after the segment rearrangement and the time-series data after the segment rearrangement is returned.
- FIG. 14 is a diagram for explaining the rearrangement process in the case of 1 ⁇ -speed playback in the order reordering device.
- FIG. 15 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing the double-speed advance
- FIG. 16 is a diagram for explaining stream switching processing in the selection device shown in FIG.
- FIG. 17 is a diagram for explaining a stream generated in the order reordering device at the time of double speed advance
- FIG. 18 is a diagram for explaining the rearrangement processing in the case of double speed advance in the order rearrangement device g.
- FIG. 19 is a diagram for explaining a rearrangement process in the order reordering apparatus in the case of double speed advance
- FIG. 20 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing the quadruple speed turning,
- FIG. 21 is a diagram for explaining a stream generated in the order reordering device at 4 ⁇ speed rotation.
- FIG. 22 is a diagram for explaining the rearrangement processing in the order reordering device in the case of 4 ⁇ speed and 8 ⁇ speed advance
- FIG. 23 is a diagram for explaining a rearrangement process in the case of 4 ⁇ speed advance in the order rearrangement apparatus.
- FIG. 24 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing the fast turning at 8 ⁇ speed.
- FIG. 25 is a diagram for explaining a stream generated by the order reordering device at the time of 8 ⁇ speed advance
- FIG. 26 is a diagram for explaining a rearrangement process in the case of 8 ⁇ speed advance in the order reordering device.
- FIG. 27 is a diagram for explaining the reordering process in the case of 1 ⁇ rewinding in the order reordering device.
- FIG. 28 is a diagram for explaining the rearrangement process in the case of 1 ⁇ rewinding in the order reordering device.
- FIG. 29 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing double speed rewinding.
- FIG. 30 is a diagram for explaining a stream generated in the order reordering device S in rewinding at 2 ⁇ speed
- FIG. 31 is a diagram for explaining a rearrangement process in the case of double speed rewinding in the order reordering device.
- FIG. 32 is a diagram for explaining the reordering process in the case of double speed rewinding in the order reordering device.
- FIG. 33 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing 4 ⁇ speed rewinding.
- FIG. 34 is a diagram for explaining a stream generated by the order reordering device in the 4 ⁇ rewinding.
- FIG. 35 is a diagram for explaining a rearrangement process in the case of 4 ⁇ speed rewinding in the order reordering device.
- FIG. 36 is a diagram for explaining a rearrangement process in the case of 4 ⁇ rewinding in the order reordering device.
- FIG. 37 is a diagram for explaining the switching operation of the selection device shown in FIG. 4 when performing the 8 ⁇ rewinding.
- FIG. 38 is a diagram for explaining a stream generated by the order reordering device in the 8 ⁇ rewinding.
- FIG. 39 is a diagram for explaining the rearrangement process in the case of 8 ⁇ rewinding in the order reordering device.
- FIG. 40 is a diagram for explaining the rearrangement processing in the case of 8 ⁇ -speed rewinding in the order reordering device.
- FIG. 41 is a diagram for explaining a segment rearrangement process in the order permutation apparatus shown in FIG. 1 in a case where bit-reverse by a power of 3 is used in the embodiment of the present invention.
- FIG. 42 is a diagram for explaining the relationship between the time-series data before segment rearrangement in the case shown in FIG. 41 and the time-series data after segment rearrangement.
- FIG. 43 is a diagram for explaining the process of returning the arrangement of the segments in the order reordering device in the case shown in FIG.
- FIG. 44 is a diagram for explaining an association between the time-series data in which the segments are rearranged in the case shown in FIG. 41 and the time-series data in which the rearrangement of the segments is returned.
- FIG. 45 is a diagram for explaining the processing in the order permutation apparatus in the improved version of the bit reverse in the present embodiment.
- FIG. 46 is a diagram for explaining the change of the time-series data in the case shown in FIG. 45.
- FIG. 47 is a diagram showing the order reordering device in the improved bit reverse in this embodiment. It is a diagram for explaining the processing in the
- FIG. 48 is a diagram for explaining changes in the time-series data in the case shown in FIG. 47
- FIG. 49 is a diagram for explaining twice-speed advance by the improved bit-reversal in this embodiment.
- FIG. 50 is a diagram for explaining data restored by the order reordering device in the case shown in FIG. 49.
- FIG. 4 shows a configuration diagram of the data transmission device according to the present embodiment.
- the data transmission apparatus includes, for example, an order changing apparatus 1-1, 1-2, 1-3, 1_4 through a cable 5 to a selecting apparatus 2-1, 1, 2 2,.., 2—n, and the selectors 2-1, 2— 2,.., 2_n were connected to the resequencing units 3-1, 1, 3—2,. It has a configuration.
- Each of the selection devices 2-1, 2_2,..., 2 _n and the reordering devices 3-1, 3, 2,..., 3—n is provided, for example, in each home, and the reordering devices g3_l, 3 — 2,..., 3_n are connected to CRT Chathode Ray Tube) 4-1, 1, 4_2,.
- the data receiving terminals in each home are 5-1, 5_2,..., 5—n, each of which is a selection device 2-1, 2, 2,..., 2—n, and a reordering device 3-1, 3, , 3—n and CRT4—1, 4—2,... 4—n.
- n represents an arbitrary integer of 3 or more.
- the S-changer 1-1 replaces the order of the segments 7 in each block 6 shown in FIG. 5 as described later, and outputs the stream to the selectors 2_1, 2—2,. I do.
- the order changing device 1_2, 1_3, 1-4 is basically the same as the order changing device 1-1. However, the output time of the stream is delayed by t, 2 t, and 3 t, respectively, from the output time of the stream from the permutation device 1-1.
- the selecting device 2-1 inputs the streams from the order changing devices 1-1, 1_2, 1-3, and 1-4, respectively, selects one of them, and places the stream corresponding to the selection in order. Output to the replacement unit 3-1.
- the selection devices 2-2,..., 2-II have basically the same configuration as the selection device 2-1.
- 3—n block the segment 7 included in the stream input from the selecting device 2-1, 2, 2,..., 2—n, respectively. , As described later, and outputs the replaced streams to CRTs 4_1, 4-2,... 4-n, respectively.
- the transmission status of the data sequence in the data transmission device of the present embodiment is the same as that shown in FIG. 2 described above, and will be described below with reference to FIG.
- the special playback is performed by using the selection devices 2_1, 2-2, and 2-3.
- the selection devices 2_1, 2-2, and 2-3 By selecting a stream different from that of the conventional data transmission apparatus, special reproduction can be easily realized.
- Stream 35 sends out block D at time tp, and sends out block E at time ts.
- the viewer only has to resend from block D, so select stream 36. Since only the viewer who requested the trick play switched the selection, it has no effect on other viewers watching the same stream 35.
- switching the selection to the upper stream in Fig. 2 enables fast forward, and switching the selection to the lower stream enables the rewinding function.
- stream 35 For example, one of the viewers of stream 35 switches to stream 34 at time tp. Suppose you changed it. At time tp, stream 35 sends block D and stream 34 sends block E. Switching the stream from 35 to 34 means moving to the data ahead by the time t.
- FIG. 6 is a diagram for explaining a change in a data transmission position on time-series data due to switching of streams.
- stream 37 sends the position of arrow 17 shown in FIG. 6
- stream 36 sends the position of arrow 16
- stream 35 shows the position of arrow 15 shown in FIG.
- Stream is sending the position
- stream 34 is sending the position of arrow 14
- stream 33 is sending the position of arrow 13
- stream 32 is sending the position of arrow 12 I have. Switching the stream from 35 to 34 moves from the position of arrow 15 to the position of arrow 14.
- the block 6 in the time-series data is divided into one or a plurality of segments 7 for each time t2, and the segments 7 are used as processing units.
- n is an integer
- t 2 is selected so that t is a multiple of n of t 2.
- FIG. 7 is a diagram for explaining the reordering process of the segments 7 in the order reordering device 1_1.
- the processing in the order changing device S 1-2, 1-3, 1-4 is the same as the processing in the order changing device 1-1.
- FIG. 8 is a diagram for explaining the relationship between the time-series data before segment rearrangement and the time-series data after segment rearrangement.
- the order rearranging apparatus 1-1 rearranges the segments A0 to A7 as shown in FIG. 8, and as shown in FIG. Output to selection units 2-1, 2, 2 and 3.
- the selecting device 2-1 selects, for example, the stream S1-1 and outputs the stream S1-1 to the reordering device 3_1 as the stream S2-1.
- the order reordering device 3-1 performs an operation of returning the arrangement of the segments for the stream S2-1. This re-replacement operation can be performed in the same bit reverse procedure.
- the order permuting apparatus 1-1 includes a control unit 10, memories 1a and lb, and switches lc and 1d.
- Each of the memories 1 a and lb has a capacity capable of storing at least one block.
- the switch 1c is connected to the memory 1a side, and is included in the block constituting the input stream S0_1
- the seven segments are sequentially arranged in the areas indicated by addresses 10 J, “1”, “2J,“ 3J, ⁇ 4 ”,“ 5J, ”“ 6J, ”and“ 7J ”of the memory 1a.
- the switch 1c is connected to the memory 1b, and the switch 1d is connected to the memory 1a.
- a is read (Read) in the order of addresses ⁇ ”,“ 4j, “2j, ⁇ 6 J, ⁇ lj, ⁇ 5 J,. ⁇ 3 J, and “7”, and the read data is written to stream S 2 — Output to selection device 2-1 as 1.
- the next block data is stored in the memory 1b via the switch lb.
- FIG. 11 is a configuration diagram of the selection device 2-1.
- the configuration of the selection devices 2-2,..., 2-n is basically the same as that of the selection device 2-1.
- the selection device 2-1 includes a D-flip-flop (FF) 100, 100, 111, NOT circuits 102, 103, selectors 104, 105, 106, 109, 110, an adder circuit 107, and a subtractor circuit 108.
- FF D-flip-flop
- the D-FF100 inputs the segment pulse signal (SP) from the CLK terminal, and the Q terminal is connected to the D-FF101 CLK terminal.
- the Q terminal of the D-FF 100 is connected to the D terminal via the NOT circuit 102 and is connected to one of the input terminals of the selector 104.
- the segment pulse signal (SP) is a pulse signal corresponding to the head of each segment 7 shown in FIG.
- This segment pulse signal is sent separately from the data from the order permuting devices 1-1 to 1-4, or, although not shown, the receiving terminal 5-1 to 5-n uses the order permuting device. Generated based on data from 1-1-1-4.
- the Q terminal of the D-FF 101 is connected to one of the input terminals of the selector 104 and connected to the D terminal via the NOT circuit 103.
- the selector 104 inputs a segment pulse signal, a Q signal from D-FF100 and a Q signal from D-FF101, and selectively adds these signals according to CNT. Output to 107 and subtraction circuit 108.
- CNT is a signal indicating any of 2 ⁇ speed, 4 ⁇ speed, and 8 ⁇ speed.
- the CNT is a signal generated when the user inputs the CNT using a button of a receiving terminal or a remote controller.
- the adder circuit 107 adds the value of D-FF111 to the value of the selector 105, and outputs the addition result to the selector 109 as a REW (Rewind) switching signal S107. You You.
- the selector 105 selectively outputs ⁇ 1 j or ⁇ 2 J to the adder circuit 107 as a signal S 105 based on the block pulse signal (BP).
- the block pulse signal (BP) is a pulse signal corresponding to the head of each block 6 shown in FIG.
- This block pulse signal (BP) is generated based on the data from the order changing devices 1-1 to 1-4 sent separately from the data from the order changing device 1-1 to 1-4.
- the subtraction circuit 108 subtracts the value of the selector 106 from the value of the D-FF 110 and outputs the result of the subtraction to the selector 109 as a FF (Fast Forward) switching signal S108. .
- the selector 106 selectively outputs “1” or ⁇ 0 J to the subtraction circuit 108 as a signal S 106 based on the block pulse signal (BP).
- the selector 109 inputs a FF / REW (Fast Forward / Rewind) switching signal, and when the FFZREW switching signal indicates FF, the selector signal 1101 is used as the switching signal S1 08 for the FF as the switching signal S109. If the REW switching signal indicates REW, the REW switching signal S 107 is output to the selector 110 as the switching signal S 109.
- the FFZREW switching signal is a signal generated when the user inputs the signal using a button of a receiving terminal or a remote controller.
- the selector 110 based on the switching signal S109, converts the streams S1_1, S1-2, S1-3 input from the sequence converters 1-1, 1-2, 1-1-3, 1-4. , S 1-4 are selectively output as a stream S 211 to the order reordering device 3-1.
- the selection processing in the selection device 2-1 will be described later.
- FIG. 12 is a diagram for explaining a process of returning the arrangement of the segments 7 in the order reordering device 3-1.
- Figure 13 shows the time-series data with the segments sorted and the segment It is a figure for explaining the relation with the time series data after changing back.
- the reordering device S3-1 has, for example, the same configuration as the reordering device S1-1 shown in FIG. 9 and is included in the blocks constituting the input stream S2-1 shown in FIG.
- the eight segments shown in FIG. 14 are assigned addresses “0”, rij, “2J,“ 3 ”,“ 4J, “5”, “6J, "Write to the area indicated by 7J in order.
- read memory 1a ( Read) is performed in the order of address ⁇ 0 J, “4 J,“ 2j, “6”, “1”, “5j,“ 3 ”,“ 7 ”, and this read data is output as stream S 3-1 as CRT4 — Output to 1.
- the next block data is stored in the memory 1b via the switch 1b.
- FIG. 15 is a diagram for explaining the switching operation of the selection device 2_1 shown in FIG. 4 when performing the double-speed rotation.
- FIG. 15 shows a state in which four streams 20 to 23 are transmitted with a delay of time t. The same applies to the following figures. For example, suppose that a double speed advance is started from the time tc of the stream 23.
- each block is composed of eight segments
- the order change devices 1-1, 1-2, 1-3, and 1-4 shown in FIG. 4 output the streams 20 to 23 to the selection device 2-1.
- the selection device 2-1 extracts four segments A0, A4, A2, and A6 of the block A from the stream 23.
- the selector 2-1 switches the streams and extracts the segments B1, B5, B3, and B7 of the block B and the segments C0, C4, C2, and C6 of the block C from the stream 22.
- the selector 2-1 switches the streams and extracts the segments D1, D5, D3, and D7 of the block D and the segments E0, E4, E2, and B6 of the block E from the stream 21.
- the selector 2-1 switches the stream and extracts the segments F1, F5, F3, and F7 of the block F and the segments G0, G4, G2, and G6 of the block G from the stream 20.
- FIGS. 16 (A), (B), and (C) are diagrams for explaining the stream switching timing in the selection device 2-1 shown in FIG. 11 in the case of double speed advance. As shown in Figs. 16 (A) and (B), every time eight pulses of the segment pulse signal SP are output, a block pulse signal BP that generates one pulse is output. A detailed description of this part is omitted.
- the selector 109 shown in FIG. 11 outputs the value of D—FF 11 1 at the timing when the pulse of the block pulse signal BP is output and then the fourth pulse of the segment pulse signal SP is output.
- the value obtained by adding “1 1 j” is used as the switching signal S 109 and this value is used as the value next to the D-FF 111.
- the D-FF 111 is the currently selected stream. Holding the number, and adding “ ⁇ 1” to this value means switching the stream in the direction from stream 23 to stream 20 in FIG.
- the time-series data output from the selecting device 2-1 to the sequential re-permuting device 3-1 is data composed of segments marked with “*” shown in FIG.
- the segment with The segments marked with “*” are actually what the viewer sees, and the segments without r * j are not delivered to the viewer. Since the segments of each block are taken out at one time, double speed fast turn is realized.
- the order reordering device 3-1 as shown in FIG. 17, the segments with ⁇ * _
- Fig. 17 shows the situation of 2x fast forward viewed in time series. This shows that the number of segments read out during each block is one half.
- the order reordering device 3_1 converts the eight segments included in the block constituting the input stream S 2-1 into addresses “0” and “0” of the memory 1a shown in FIG. 1), “2J,” “3”, “4J,” “5”, “6”, and ⁇ are sequentially stored (written) in the areas indicated by J. Then, with switch 1c connected to the memory lb side and switch 1d connected to the memory 1a side, reading (Read) of the memory 1a is performed at addresses 0 J, “2”, “lj,” 3j, [gamma] 4 j f "6j," 5 J, conducted in the order of [gamma] 7 J, and outputs the read data as a stream S 3-1 to CRT 4-1. in this case, in order revision 3-1, FIG. As shown in 19, the segments of the input stream S 2_1 are rearranged, and the stream S 3-1 is output. In this way, the temporal relationship between segments is optimized. Is done.
- FIG. 20 is a diagram for explaining the switching operation of the selecting device 2-1 shown in FIG. 4 when performing the quadruple speed fast-forward.
- each block is composed of eight segments, so that the selecting device 211 only has to extract two segments from each block.
- the order change devices 1-1, 1-2, 1-3, 1-4 and a not-shown order change device respectively select the streams 24 to 29 shown in FIG. Output to 1.
- the selecting device 2-1 extracts two segments A0 and A4 of the block A from the stream 29.
- the selector 2_1 switches the streams and extracts two segments B2 and B6 of the block B from the stream 28.
- the selecting device 2-1 switches the stream to extract the two segments Cl and C5 of the block C from the stream 27.
- the selecting device 2-1 switches the stream and blocks the stream 26 from the stream 26. Extract two segments, D3 and D7 of D, and E0 and E4 of block E.
- the selector 2-1 switches the streams and extracts two segments F2 and F6 of the block F from the stream 25.
- the stream is switched and two segments Gl and G5 of the block G are extracted from the stream 24.
- the selector 109 shown in FIG. 11 outputs the second, fourth, and sixth segment pulse signals SP after the block pulse signal BP is output.
- the switching signal S 1 08 for FF which indicates the value obtained by adding ⁇ 1 J to the value of D-FF 11 1, is switched to the selector 110 as the switching signal S 109. Output.
- the time-series data output from the selecting device 2-1 to the sequential re-performing device 3-1 is data composed of segments marked with “*” shown in FIG. Two segments are extracted from each block, and quadruple speed is realized. Then, in the order reordering device 3-1 as shown in FIG. 21, the segments marked with “*” shown in FIG. 20 are rearranged, and the rearranged streams are transmitted. As can be seen from Fig. 21, the number of segments read out in each block is a quarter. The device 3-1 converts the seven segments included in the blocks constituting the input stream S2-1 into addresses “0” and “1” of the memory 1a shown in FIG. 9 as shown in FIG.
- switch 1c is connected to memory lb side.
- reading (Read) of the memory 1a is performed at addresses “0 J,“ 1 ”,“ 2 ”,“ 3 ”,“ 4 j, ” 5 ”, ⁇ 6 J, and“ 7 ”in this order, and output this read data to the CRT 4_1 as stream S3_1.
- the segments are not rearranged for the input stream S2_1, and the stream S2-1 is left as it is in the stream S3_1. Is output as
- FIG. 24 is a diagram for explaining the switching operation of the selection device 2-1 shown in FIG. 4 when performing the 8 ⁇ speed advance.
- each block is composed of eight segments, so one segment can be extracted from each block.
- the order changing devices 1-1, 1-2, 1-3, 1_4 and the not-shown order changing device respectively set the streams 40 to 46 shown in FIG. 2 to the selecting device 2-1.
- the selection device 2-1 extracts the segment AO of the block A from the stream 46.
- the selecting device 2-1 switches the stream and extracts the segment B4 of the block B from the stream 45.
- the selector 2-1 switches the stream and extracts the segment C2 of the block C from the stream 44.
- the selecting device 2-1 switches the stream and extracts the segment D6 of the block D from the stream 43.
- the selection device 2-1 switches the stream Extract segment B1 of block E from stream 42.
- the selection device 2-1 switches the stream and extracts the segment F5 of the block F from the stream 41.
- the selection device 2-1 switches the stream and extracts the segment G3 of the block G from the stream 40.
- the selector 109 shown in FIG. 11 outputs the first, second, third and fourth segment pulse signals SP after outputting the block pulse signal BP.
- FF switching signal S108 which indicates the value obtained by adding "-1" to the value of D-FF111 at the timing when the fifth, sixth, and seventh pulses are output The signal is output to the selector 110 as a signal 109.
- the time-series data output from the selecting device 2-1 to the order re-performing device 3-1 is data composed of segments marked with “*” shown in FIG. One segment is extracted from each block, realizing 8x fast turn. Then, in the order reordering device 3_1, as shown in FIG. 25, the segments with r * j shown in FIG. 17 are rearranged, and the rearranged streams are transmitted. As can be seen from Fig. 25, the number of segments read in each block is one quarter.
- the reordering device 3-1 converts the seven segments included in the blocks constituting the input stream S2-1 into, for example, as shown in FIG. 22, the address roj of the memory 1a shown in FIG. 1), ⁇ 2 ”,“ 3 ”,“ 4 ”,“ 5 ”,“ 6 ”, ⁇ 7 J Then, with the switch 1c connected to the memory 1b side and the switch 1d connected to the memory 1a side, reading (Read) of the memory 1a is performed at addresses ⁇ 0 J, "lj,” 2j, " 3 ”, f 4 j,“ 5j, “6 J, ⁇ 7 j”, and outputs the read data to the CRT 4-1 as stream S3-1. At this time, the order reordering device 3-1 As shown in FIG. 26, the segments of the input stream S2-1 are not rearranged, and the stream S2-1 is output as it is as the stream S3-1. Next, rewinding will be described.
- the segment rearrangement described with reference to FIGS. 7 and 8 is performed in block units, and a stream S 1_1 is generated.
- the stream S 1_1 is output to the sequential re-displacement device 3_1 as a stream S 2_1 as it is, for example, via the selection device 2-1.
- the order reordering device S 3-1 converts the eight segments included in the block constituting the input stream S 2_1 into addresses “0” and “0” of the memory 1 a shown in FIG. 9, for example, as shown in FIG. rij, “2”, “3J,” “4J,” “5,” “6,” and “7J” are sequentially stored (written). Then, switch 1 c is connected to the memory lb side, and the switch is connected.
- reading (Read) of the memory 1 a is performed at addresses “7 j, ⁇ 3 J,“ 5 j, “1”, ⁇ 6 j, “2”, “4 J, The reading is performed in the order of “0”, and the read data is output to the selection device 2_1 as the stream S2-1.
- the order reordering device 3-1 as shown in FIG. 28, the segments of the input stream S2-1 are rearranged, and the stream S3-1 is output.
- FIG. 29 is a diagram for explaining a switching operation of the selection device 2-1 shown in FIG. 4 when performing double-speed rewinding.
- the order change devices 1-1, 1_2, 1-3, 1-4 and the order change device (not shown) shown in FIG. 4 output the streams 50 to 56 to the selection device 2_1.
- the selecting device 2_1 extracts the segments GO, G4, G2, and G6 of the block G from the stream 50.
- the selection device 2-1 switches the streams and extracts the segments F1, F5, F3, and F7 of the block F from the stream 51.
- the selection device 2_1 switches the stream, and switches the segment of the block E from the stream 53. Extract E0, E4, B2, and B6.
- the selecting device 2-1 switches the streams and extracts the segments D1, D5. D3, D7 of the block D from the stream 54.
- the selector 2-1 switches the stream and extracts the segments GO. G4, G2, and G6 of the block G from the stream 56.
- the selector 109 shown in FIG. 11 outputs the value obtained by adding “2” to the value of D—FF 1 1 1 when the pulse signal of the block pulse signal BP is output.
- the switching signal S 107 is output to the selector 110 as the switching signal S 109, and after the pulse output of the block pulse signal BP, the fourth pulse of the segment pulse signal SP is output.
- Output a 1-operation switching signal 31 07 indicating a value obtained by adding “1” to the value of FF 111 to the selector 110 as a switching signal S 109.
- adding “1” to the value of D—FF 1 1 1 means that switching from stream 50 to stream 51 and switching from stream 53 to stream 54 are performed as shown in FIG. Thus, it means that the stream is switched to the stream adjacent to the stream 50 to the stream 56. Also, adding “2J” to the value of D—FF 1 11 1 is similar to switching from stream 51 to stream 53 and switching from stream 54 to stream 56, as shown in FIG. This means that the stream is switched by skipping one stream in the direction from stream 50 to stream 56.
- the time-series data output from the selecting device 2-1 to the order re-permuting device 3-1 is data composed of segments marked with "*" shown in FIG. Four segments are extracted from each block, and double speed rewind is realized. Then, in the order reordering device 3-1 as shown in FIG. 30, the segments marked with "*" shown in FIG. 29 are rearranged, and the rearranged streams are transmitted.
- the device 3-1 converts the input stream S 2-1 into blocks For example, as shown in FIG. 31, the contained eight segments are stored in the memory 1a at addresses “0J, rij,“ 2 ”,“ 3 ”,“ 4j, ”“ 5J, ”“ 6j, ”“ 7
- the memory is sequentially stored (Write) in the area indicated by J.
- the switch 1c is connected to the memory lb side, and the switch 1d is connected to the memory 1a side, and the memory 1a is read (Read).
- Read Read
- the read data is selected as a stream S2-1—selector 2 Output to —1.
- the segments of the input stream S2-1 are rearranged, and the stream S3_1 is output.
- FIG. 33 is a diagram for explaining the switching operation of the selection device 2-1 shown in FIG. 4 when performing 4 ⁇ rewinding.
- the streams 57 to 63 are output from the order replacing device 1_1 to the selecting device 2-1.
- the selection device 2-1 extracts the segments GO and G4 of the block G from the stream 57.
- the selection device 2_1 switches the stream and extracts the segment F2.F6 of the block F from the stream 58.
- the selection device 2-1 switches the stream and extracts the segment E1.E5 of the block E from the stream 59.
- the selection device 2-1 switches the stream and extracts the segment D3.D7 of the block D from the stream 60.
- the selection device 2-1 switches the streams and extracts the segments CO and C4 of the block C from the stream 62.
- the selector 2-1 switches the streams and extracts the segments B2 and B6 of the block B from the stream 63.
- the selector 109 shown in FIG. 11 outputs the value obtained by adding “2” to the value of D—FF 1 1 1 when the pulse of the block pulse signal BP is output.
- the W switching signal S 1 07 is changed to the switching signal S 1 0 9.
- the switching signal S 109 is output to the selector 110, and after the pulse of the block pulse signal BP is output, the second, fourth, and sixth pulses of the segment pulse signal SP are output.
- D-FF 1 1 1 The value of D 1 is added to the value of 1, 1
- the time-series data output from the selection device 2-1 to the re-sequencing device 3_1 is data composed of segments marked with “*” shown in FIG. Two segments are taken out from each block, and 4 times rewinding is realized. Then, in the reordering device 3-1 as shown in FIG. 34, the segments marked with “*” shown in FIG. 33 are rearranged, and the rearranged stream power is transmitted by “1” 5.
- the order reordering device 3-1 converts the eight segments included in the input stream S 2-1 contained in the stream S 2-1 into the address roj of the memory 1a shown in FIG. 9 as shown in FIG. , “Lj, ⁇ 2”, “3J, ⁇ 4J,” “5j,“ 6 ”, and ⁇ 7J. Then, with the switch 1c connected to the memory 1b side and the switch 1d connected to the memory 1a side, reading of the memory 1a (Read) is performed at addresses ⁇ 1 j, roj, “3”, The reading is performed in the order of “2”, “5”, “4”, “7 J,” and “6”, and the read data is output to the selection device 2-1 as a stream S2-1. At this time, as shown in FIG. 36, in the order reordering device 3-1, the segments of the input stream S2-1 are rearranged, and the stream S3-1 is output.
- FIG. 37 is a diagram for explaining the switching operation of the selection device 2-1 shown in FIG. 4 when performing the rewinding at 8 ⁇ speed.
- Reordering device 1—1, 1—2, 1—3, 1—4 and not-shown reordering device Output stream 64 to end 0 to the selection device 2_1.
- the selecting device 2-1 extracts the segment GO of the block G from the stream 64.
- the selector 2-1 switches the stream and extracts the segment F4 of the block F from the stream 65.
- the selector 2-1 switches the stream and extracts the segment E2 of the block E from the stream 66.
- the selector 2-1 switches the stream and extracts the segment D6 of the block D from the stream 67.
- the selection device 2_1 switches the streams and extracts the segment C1 of the block C from the stream 68.
- the selection device 2-1 switches the stream and extracts the segment B5 of the block B from the stream 69.
- the selector 2_1 switches the stream and extracts the segment A3 of the block A from the stream 70.
- the selector 109 shown in FIG. 11 outputs the REW switching signal S to which the value “2” of D-FF 1 1 1 is added at the time of the pulse output of the block pulse signal BP. 1 107 is output to the selector 110 as the switching signal S 109, and after the pulse output of the block pulse signal BP, the first, second, third, fourth, and fifth segment pulse signals SP are output.
- the REW switching signal S1 07 which is obtained by adding ⁇ 1 J to the value of D-FF 111, as the switching signal S1 09 Output to selector 110.
- the time-series data output from the selecting device 2-1 to the sequential re-performing device 3-1 is data composed of the segments with ⁇ * _
- the I device 3-1 is a block that constitutes the input stream S2-1.
- the seven segments included are represented by addresses “0”, rij, “2J,” “3J,” “4J,” “5J,” “6”, and ⁇ 7 of the memory 1a shown in FIG. Write (Write) to the area indicated by j in order.
- write Write
- switch 1c connected to memory 1b
- switch 1d connected to memory 1a
- Reading of memory 1a is performed at addresses ⁇ 0 J, “2J,“ 3j, "4j," 5 "," 6
- Fig. 30, Fig. 34, and Fig. 38 show the 2x, 4x, and 8x rewind situations viewed in chronological order, respectively. It can be seen that the number of segments read in each block is one-half, one-quarter, and one-eighth, respectively.
- block A is divided into 9 segments A0 to A8 as n-3, 9 is the square of 8, so 0 to 8 are represented by two-digit ternary numbers, and A0 to A8 are represented as Correspondence (Fig. 41 (a)>).
- the n-fold multiplication speed can be advanced and rewinded by switching streams.
- variable speed special reproduction is possible by using the above method.
- the double speed advance shown in FIG. 17 is a complete double speed advance because the segments are accessed every D in the block. However, the last segment of block A to be accessed and the first segment of block B are separated by two segments in time series. Conversely, the last segment of block B and the first segment of block C are adjacent.
- each block is composed of 8 segments, so it is ideal to have access every 3 segments.However, if there is a location every 5 segments, the adjacent segment is reproduced. Or
- the S-substitution by bit reverse is improved, and the substitution method is changed for each block.
- a block is divided into eight segments, after performing a normal bit reverse as shown in Fig. 45 (Fig. 45 (b)), the first four segments and the second half are segmented. Further change (Fig. 45 (c)).
- the data in this result block is in the order shown in Fig. 46.
- the improved bit reverse In order to undo this replacement (hereinafter referred to as the improved bit reverse), first replace the four segments in the first and second half as shown in Fig. 47, and then apply bit reverse.
- the situation is shown in Figure 48.
- Fig. 49 shows a case where the improved bit reverse and the normal bit reverse are alternately performed for each block, and the rotation is performed twice as fast.
- the order after the bit reverse is replaced by the first four and the last four, but the same sort can be performed by using other sorting methods. The effect can be obtained.
- the two sorting methods are alternately applied.
- the same effect can be obtained by changing the sorting method for each block using three or more methods. Is possible.
- the data transmission apparatus can appropriately respond to such requests.
- the data transmission apparatus can appropriately respond to such requests.
- special reproduction such as fast forward, rewind, and pause can be realized even when a plurality of transmission requests are handled by one stream.
- high-speed fast-forward / rewind can be performed.
- the best mode for carrying out the data receiving apparatus and method of the present invention is the same as the best mode for carrying out the data transmitting apparatus and method described above.
- INDUSTRIAL APPLICABILITY The data transmission device and method and the data reception device and method of the present invention can be used for services such as VOD in various situations.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19581534T DE19581534B4 (de) | 1994-12-28 | 1995-12-28 | Datenübertragungsgerät und Verfahren |
JP52037296A JP3804070B2 (ja) | 1994-12-28 | 1995-12-28 | データ伝送装置およびその方法 |
US08/702,479 US5774498A (en) | 1994-12-28 | 1995-12-28 | Data transmitting apparatus and method of same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32862994 | 1994-12-28 | ||
JP6/328629 | 1994-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996020565A1 true WO1996020565A1 (fr) | 1996-07-04 |
Family
ID=18212408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/002758 WO1996020565A1 (fr) | 1994-12-28 | 1995-12-28 | Dispositif et procede de transmission de donnees |
Country Status (6)
Country | Link |
---|---|
US (1) | US5774498A (ja) |
JP (1) | JP3804070B2 (ja) |
KR (1) | KR100369093B1 (ja) |
CN (1) | CN1156159C (ja) |
DE (1) | DE19581534B4 (ja) |
WO (1) | WO1996020565A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11506575A (ja) | 1995-03-07 | 1999-06-08 | インターバル リサーチ コーポレイション | 情報の選択記憶システム及び方法 |
US5893062A (en) | 1996-12-05 | 1999-04-06 | Interval Research Corporation | Variable rate video playback with synchronized audio |
US6263507B1 (en) | 1996-12-05 | 2001-07-17 | Interval Research Corporation | Browser for use in navigating a body of information, with particular application to browsing information represented by audiovisual data |
US7180951B2 (en) * | 1998-10-30 | 2007-02-20 | Broadcom Corporation | Reduction of aggregate EMI emissions of multiple transmitters |
US6823483B1 (en) * | 1999-04-22 | 2004-11-23 | Broadcom Corporation | Physical coding sublayer for a multi-pair gigabit transceiver |
US7155735B1 (en) | 1999-10-08 | 2006-12-26 | Vulcan Patents Llc | System and method for the broadcast dissemination of time-ordered data |
US6757682B1 (en) | 2000-01-28 | 2004-06-29 | Interval Research Corporation | Alerting users to items of current interest |
KR100441065B1 (ko) * | 2000-09-27 | 2004-07-19 | 지은묵 | 인터넷 방송 시청 지원 시스템 및 그 방법 |
JP2003060638A (ja) * | 2001-08-15 | 2003-02-28 | Sony Corp | コンテンツ提供装置及びコンテンツ提供方法 |
JP2003101604A (ja) * | 2001-09-20 | 2003-04-04 | Sony Corp | データ伝送方法及び装置並びにデータ受信方法及び装置 |
US6738980B2 (en) * | 2001-11-15 | 2004-05-18 | Industrial Technology Research Institute | Methods and systems for video streaming with VCR functionality |
US7555042B2 (en) * | 2003-01-08 | 2009-06-30 | Samsung Electronics Co., Ltd. | Method and apparatus for reverse play |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07264573A (ja) * | 1994-03-15 | 1995-10-13 | Internatl Business Mach Corp <Ibm> | ビデオ・システムにおけるポーズ・レジュームをサポートする方法およびシステム |
JPH0832955A (ja) * | 1994-07-15 | 1996-02-02 | Matsushita Electric Ind Co Ltd | 映像信号端末装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5357276A (en) * | 1992-12-01 | 1994-10-18 | Scientific-Atlanta, Inc. | Method of providing video on demand with VCR like functions |
EP0609054A3 (en) * | 1993-01-25 | 1996-04-03 | Matsushita Electric Ind Co Ltd | Method and apparatus for recording or reproducing video data on or from storage media. |
JP2831933B2 (ja) * | 1993-09-02 | 1998-12-02 | 日本電信電話株式会社 | ビデオライブラリシステム |
JP2742383B2 (ja) * | 1994-04-11 | 1998-04-22 | 松下電器産業株式会社 | 要求番組提供装置及びその方法 |
US5546118A (en) * | 1994-06-20 | 1996-08-13 | Sony Corporation | Data recording/reproducing method and data send-out method |
-
1995
- 1995-12-28 US US08/702,479 patent/US5774498A/en not_active Expired - Lifetime
- 1995-12-28 WO PCT/JP1995/002758 patent/WO1996020565A1/ja active Application Filing
- 1995-12-28 JP JP52037296A patent/JP3804070B2/ja not_active Expired - Fee Related
- 1995-12-28 CN CNB951926152A patent/CN1156159C/zh not_active Expired - Lifetime
- 1995-12-28 DE DE19581534T patent/DE19581534B4/de not_active Expired - Lifetime
- 1995-12-28 KR KR1019960704717A patent/KR100369093B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07264573A (ja) * | 1994-03-15 | 1995-10-13 | Internatl Business Mach Corp <Ibm> | ビデオ・システムにおけるポーズ・レジュームをサポートする方法およびシステム |
JPH0832955A (ja) * | 1994-07-15 | 1996-02-02 | Matsushita Electric Ind Co Ltd | 映像信号端末装置 |
Also Published As
Publication number | Publication date |
---|---|
KR970701481A (ko) | 1997-03-17 |
JP3804070B2 (ja) | 2006-08-02 |
CN1146268A (zh) | 1997-03-26 |
DE19581534T1 (de) | 1997-06-05 |
DE19581534B4 (de) | 2007-08-09 |
US5774498A (en) | 1998-06-30 |
CN1156159C (zh) | 2004-06-30 |
KR100369093B1 (ko) | 2003-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3816972B2 (ja) | ディジタルビデオ記憶装置システム、およびそのビデオデータの格納方法と視聴方法 | |
JP3604724B2 (ja) | ビデオサーバメモリ管理方法 | |
JP3170461B2 (ja) | ビデオ・オン・デマンド放送用のピラミッド形データ・ブロック構成 | |
KR100188496B1 (ko) | 가변속도 스캐닝 동작 수행 방법 | |
EP0686908B1 (en) | Server for video on demand system | |
WO1996020565A1 (fr) | Dispositif et procede de transmission de donnees | |
US5720037A (en) | Multimedia on-demand server | |
JP4126713B2 (ja) | 画像再生装置および画像再生方法 | |
JP2577699B2 (ja) | 多重読書き方法 | |
JP3104953B2 (ja) | 多重読み取り特殊再生方法 | |
JPH11509993A (ja) | インフォメーションオンディマンドシステム | |
AU711519B2 (en) | Memory device | |
CN101534402A (zh) | 产生索引信息的数字视讯装置及其相关方法 | |
JP4732730B2 (ja) | 音声復号装置 | |
JP3557219B2 (ja) | マルチキャスティング機能付きインフォメーションオンディマンドシステム | |
JP3149098B2 (ja) | ディジタル動画情報ファイルの多重読み取り方法 | |
JP3557218B2 (ja) | 情報サービスシステム | |
JP3556705B2 (ja) | 受信装置 | |
JPH06275024A (ja) | 映像記録再生方法および映像記録再生装置 | |
JP3153490B2 (ja) | 記録再生装置、及びその記録再生方法 | |
JPH08287617A (ja) | データ伝送方法、データ伝送・記録装置、データ再生装置及び記録媒体 | |
JP3381474B2 (ja) | 信号分配装置 | |
US20010041058A1 (en) | Data recording and reproducing method and data recording and reproducing apparatus | |
JPS63276989A (ja) | 映像信号多重復号化装置 | |
Sakamoto et al. | A large‐scale multiple‐access method for video‐on‐demand systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 95192615.2 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN DE JP KR SG US VN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1199690148 Country of ref document: VN Ref document number: 1019960704717 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08702479 Country of ref document: US |
|
RET | De translation (de og part 6b) |
Ref document number: 19581534 Country of ref document: DE Date of ref document: 19970605 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 19581534 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |