CA2046405C - Copy timing control circuit for double-deck video cassette recorder - Google Patents
Copy timing control circuit for double-deck video cassette recorderInfo
- Publication number
- CA2046405C CA2046405C CA002046405A CA2046405A CA2046405C CA 2046405 C CA2046405 C CA 2046405C CA 002046405 A CA002046405 A CA 002046405A CA 2046405 A CA2046405 A CA 2046405A CA 2046405 C CA2046405 C CA 2046405C
- Authority
- CA
- Canada
- Prior art keywords
- mode
- video cassette
- cassette deck
- deck
- copy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/1808—Driving of both record carrier and head
- G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/026—Control of operating function, e.g. switching from recording to reproducing by using processor, e.g. microcomputer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/028—Electronic editing of analogue information signals, e.g. audio or video signals with computer assistance
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/40—Combinations of multiple record carriers
- G11B2220/45—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup
- G11B2220/455—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
- G11B2220/91—Helical scan format, wherein tracks are slightly tilted with respect to tape direction, e.g. VHS, DAT, DVC, AIT or exabyte
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/002—Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/024—Electronic editing of analogue information signals, e.g. audio or video signals on tapes
Abstract
A copy timing control circuit capable of concurrently controlling a copy operation timing of one video deck by application of control signals supplied from a mode switch of the other video deck as well as a timing signal thereof. The copy timing control circuit used in a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copying of video data therebetween, is provided with a mode signal input means for receiving a plurality of mode selection signals produced by application of mode switches in either one of the video cassette decks, a copy signal input means for receiving a copy signal produced by application of a copy key, a microprocessor (15) operably connected to the mode signal input means and the copy signal input means for producing a servo control signal dependent upon receipt of a given state of the mode selection signals and the copy signal, and two servo motor drivers (5,10), connected to receive the servo control signal, for controlling the drive of the respective video cassette deck in response to the servo control signal.
Description
CA 0204640~ 1998-04-29 The present invention relates to a copy timing control circuit for use in a double-deck video cassette recorder (VCR), or with two separate VCRs, particularly to a timing control in a desired operation mode during execution of tape-to-tape copying operation in the VCRs.
When a tape-to-tape copying operation takes place with a double-deck VCR or two VCRs connected to each other, one VCR of the prior art needs to have one deck or one VCR placed in a playback mode and the other deck or VCR placed in a record mode, when a video signal from the deck in a playback mode is recorded onto the deck in record mode. However, the prior art VCR suffers from the disadvantage that a precise position control of the tapes when copying between both decks or VCRS iS difficult to achieve due to the lack of synchronism therebetween. This disadvantage results not o-,ly in a waste of tape when using the copy mode, but also in discontinuity in the recording or playback of the video signal.
It is an object of the present invention to obviate or substantially reduce the above-identified disadvantage and to provide a copy timing control circuit capable of controlling a copy operation timing of one video deck by application of control signals from the other video deck.
According to the present invention there is provided a copy timing control circuit for use in controlling two video cassette decks including means capable of concurrently controlling a copy operational timing of one video deck by application of control signals supplied from a mode switch of the other video deck as well as a timing signal thereof.
According to a preferred embodiment of the invention there is provided a copy timing control circuit for use with at least two video cassette decks capable of tape-to-tape copy of video data therebetween, said circuit comprising a mode signal input means for receiving a CA 0204640~ 1998-04-29 plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks; a copy signal input means for receiving a copy signal produced by application of a copy key; a control means operably connected to said mode signal input means and said copy signal input means, for producing a servo control signal dependent upon receipt of a given state of said mode selection signals and said copy signal;
and motor driving means, connected to receive said servo control signal, for controlling the drive of said respective video cassette deck in response to said servo control signal.
According to a further preferred embodiment of the present invention, a copy timing control circuit in a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copying of video data therebetween, is provided with a mode signal input means for receiving a plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks, a copy signal input means for receiving a copy signal produced by application of a copy key, a control means operably connected to said mode signal input means and said copy signal input means, for producing a servo control signal dependent upon receipt of a given state of said mode selection signals and said copy signal, and motor driving means, connected to receive said servo control signal, for controlling the drive of said respective video cassette deck in response to said servo control signal.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings in which like members indicate the same or similar components and wherein:-Fig. 1 is a block schematic diagram of a preferredembodiment according to the present invention;
CA 0204640~ 1998-04-29 _ - 3 Figs. 2A and 2B are respectively representations of the input signals at respective mode switches A, B and C, and a diagram, similar to a truth table, defining the various operational modes of a video cassette deck with respect to the input signals at the mode switches; and Figs. 3 through 6 are various waveform diagrams to explain a part of the operation according to the embodiment of Fig. 1.
Referring to Fig. 1, a preferred embodiment of a copy timing control circuit according to the present invention is shown. The circuit is used in a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copy of video data therebetween, wherein the circuit includes a mode signal input means for receiving a plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks. The circuit further includes a copy signal input means for receiving a copy signal produced by application of a copy key, and a microprocessor 15 operably connected to said mode signal input means and said copy signal input means for producing a servo control signal dependent upon receipt of an indication of a given state of said mode selection signals and said copy signal. The circuit further includes two servo motor drivers 5 and 10, connected to said microprocessor 15 so as to receive said servo control signal, for controlling the drive of a respective video cassette deck in response to said servo control signal.
A mode selection logic signal as shown in Fig. 2A, generated by the mode switch input according to the operational modes of the deck, is applied to the microprocessor 15 and these operational modes are shown in Fig. 2B. For example, if the mode switches A and B are at logic low state, while the mode switch C is at logic high state, then the "EJECT" mode is selected. Likewise, if the mode switches A and C are at logic high state, while CA 0204640~ 1998-04-29 ~_ - 4 -the mode switch B is at logic low state, then the "PLAY", or "RECORD" mode is selected. Therefore, in order that the operational mode of a deck is changed from the "EJECT"
mode to the "RECORD" or "PLAYBACK" mode, the input signals from the mode switches A, B and C, as shown in Fig. 2B, are applied to the microprocessor 15. Thereafter, the microprocessor 15 checks to see if it has received a copy key input, and when a desired mode selection signal is received from the mode switches in one of the cassette decks, it then generates a servo motor control signal to enable operation of the other deck in response to the key input.
In the above, the following five situations occur in relation to the respective output state of the servo control signal:
(1) when one deck is in its STOP mode, the other deck is operated so as to assume its RECORD mode;
When a tape-to-tape copying operation takes place with a double-deck VCR or two VCRs connected to each other, one VCR of the prior art needs to have one deck or one VCR placed in a playback mode and the other deck or VCR placed in a record mode, when a video signal from the deck in a playback mode is recorded onto the deck in record mode. However, the prior art VCR suffers from the disadvantage that a precise position control of the tapes when copying between both decks or VCRS iS difficult to achieve due to the lack of synchronism therebetween. This disadvantage results not o-,ly in a waste of tape when using the copy mode, but also in discontinuity in the recording or playback of the video signal.
It is an object of the present invention to obviate or substantially reduce the above-identified disadvantage and to provide a copy timing control circuit capable of controlling a copy operation timing of one video deck by application of control signals from the other video deck.
According to the present invention there is provided a copy timing control circuit for use in controlling two video cassette decks including means capable of concurrently controlling a copy operational timing of one video deck by application of control signals supplied from a mode switch of the other video deck as well as a timing signal thereof.
According to a preferred embodiment of the invention there is provided a copy timing control circuit for use with at least two video cassette decks capable of tape-to-tape copy of video data therebetween, said circuit comprising a mode signal input means for receiving a CA 0204640~ 1998-04-29 plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks; a copy signal input means for receiving a copy signal produced by application of a copy key; a control means operably connected to said mode signal input means and said copy signal input means, for producing a servo control signal dependent upon receipt of a given state of said mode selection signals and said copy signal;
and motor driving means, connected to receive said servo control signal, for controlling the drive of said respective video cassette deck in response to said servo control signal.
According to a further preferred embodiment of the present invention, a copy timing control circuit in a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copying of video data therebetween, is provided with a mode signal input means for receiving a plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks, a copy signal input means for receiving a copy signal produced by application of a copy key, a control means operably connected to said mode signal input means and said copy signal input means, for producing a servo control signal dependent upon receipt of a given state of said mode selection signals and said copy signal, and motor driving means, connected to receive said servo control signal, for controlling the drive of said respective video cassette deck in response to said servo control signal.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings in which like members indicate the same or similar components and wherein:-Fig. 1 is a block schematic diagram of a preferredembodiment according to the present invention;
CA 0204640~ 1998-04-29 _ - 3 Figs. 2A and 2B are respectively representations of the input signals at respective mode switches A, B and C, and a diagram, similar to a truth table, defining the various operational modes of a video cassette deck with respect to the input signals at the mode switches; and Figs. 3 through 6 are various waveform diagrams to explain a part of the operation according to the embodiment of Fig. 1.
Referring to Fig. 1, a preferred embodiment of a copy timing control circuit according to the present invention is shown. The circuit is used in a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copy of video data therebetween, wherein the circuit includes a mode signal input means for receiving a plurality of mode selection signals produced by application of mode switches in either one of said video cassette decks. The circuit further includes a copy signal input means for receiving a copy signal produced by application of a copy key, and a microprocessor 15 operably connected to said mode signal input means and said copy signal input means for producing a servo control signal dependent upon receipt of an indication of a given state of said mode selection signals and said copy signal. The circuit further includes two servo motor drivers 5 and 10, connected to said microprocessor 15 so as to receive said servo control signal, for controlling the drive of a respective video cassette deck in response to said servo control signal.
A mode selection logic signal as shown in Fig. 2A, generated by the mode switch input according to the operational modes of the deck, is applied to the microprocessor 15 and these operational modes are shown in Fig. 2B. For example, if the mode switches A and B are at logic low state, while the mode switch C is at logic high state, then the "EJECT" mode is selected. Likewise, if the mode switches A and C are at logic high state, while CA 0204640~ 1998-04-29 ~_ - 4 -the mode switch B is at logic low state, then the "PLAY", or "RECORD" mode is selected. Therefore, in order that the operational mode of a deck is changed from the "EJECT"
mode to the "RECORD" or "PLAYBACK" mode, the input signals from the mode switches A, B and C, as shown in Fig. 2B, are applied to the microprocessor 15. Thereafter, the microprocessor 15 checks to see if it has received a copy key input, and when a desired mode selection signal is received from the mode switches in one of the cassette decks, it then generates a servo motor control signal to enable operation of the other deck in response to the key input.
In the above, the following five situations occur in relation to the respective output state of the servo control signal:
(1) when one deck is in its STOP mode, the other deck is operated so as to assume its RECORD mode;
(2) when one deck is in its PLAY mode, the other deck is operated so as to assume its RECORD mode;
(3) when one deck is in its RECORD & PAUSE mode, the other deck is operated so as to assume its PLAY mode;
(4) when one deck is just in its REWIND PICTURE
SEARCH (RPS) or RECORD & PAUSE mode, the other deck is driven; and (5) after one deck is in its RECORD & PAUSE mode and the other deck is in its PLAY or STILL mode, then both decks are operated in playback and record modes.
Let us consider the above-identified situation (1) with reference to Fig. 3. When the first deck is in its STOP mode, the mode switches A and C are at logic low and the mode switch B is at logic high, so that when a copy key input is received oy the microprocessor 15 then the microprocessor outputs a video record signal to the second deck. Hence, it is possible to place the second deck in its RECORD mode while placing the first deck in its STOP
mode. In the second situation (2) mentioned above, when CA 0204640~ 1998-04-29 ~_ - 5 the first deck is in its PLAY mode the mode switches A and C, as shown in Fig. 4, are at a logic high state and the mode switch B is at a logic low state and after checkin~
which mode signals are present the microprocessor 15 causes a video record signal for the second deck to be outputted. In situations (3) and (4), as illustrated in Fig. 5, when the outputs from the mode switches A, B and C
of the first deck are received, a record drive signal for the second deck is provided by the microprocessor 15.
Furthermore in situation (5), as shown in Fig. 6, when the outputs of the mode switch A, B and C in the first deck represent a RECORD PAUSE mode and the outputs of the mode switches A, B and C in the second deck represent a PLAY or STILL mode, then the first deck provides a playback signal and the second deck provides a record signal, thereby enabling a copying operation in the double-deck VCR.
As will be understood from the foregoing description, the copy timing control circuit according to the described embodiment of the present invention may be used to prevent the waste of video tape and further to enable the correct tape positioning upon tape-to-tape copying mode. Further, this and other advantages of the invention can be achieved by checking mode switch inputs in one cassette deck and, when a desired mode switch input is received, enabling drive of the other cassette deck to record the video signal from the one cassette deck. That is, synchronism between both decks is effectively obtained.
It will be readily apparent to a person skilled in the art that a number of variations and modifications can be made without departing from the true spirit of the invention which will now be pointed out in the appended claims.
SEARCH (RPS) or RECORD & PAUSE mode, the other deck is driven; and (5) after one deck is in its RECORD & PAUSE mode and the other deck is in its PLAY or STILL mode, then both decks are operated in playback and record modes.
Let us consider the above-identified situation (1) with reference to Fig. 3. When the first deck is in its STOP mode, the mode switches A and C are at logic low and the mode switch B is at logic high, so that when a copy key input is received oy the microprocessor 15 then the microprocessor outputs a video record signal to the second deck. Hence, it is possible to place the second deck in its RECORD mode while placing the first deck in its STOP
mode. In the second situation (2) mentioned above, when CA 0204640~ 1998-04-29 ~_ - 5 the first deck is in its PLAY mode the mode switches A and C, as shown in Fig. 4, are at a logic high state and the mode switch B is at a logic low state and after checkin~
which mode signals are present the microprocessor 15 causes a video record signal for the second deck to be outputted. In situations (3) and (4), as illustrated in Fig. 5, when the outputs from the mode switches A, B and C
of the first deck are received, a record drive signal for the second deck is provided by the microprocessor 15.
Furthermore in situation (5), as shown in Fig. 6, when the outputs of the mode switch A, B and C in the first deck represent a RECORD PAUSE mode and the outputs of the mode switches A, B and C in the second deck represent a PLAY or STILL mode, then the first deck provides a playback signal and the second deck provides a record signal, thereby enabling a copying operation in the double-deck VCR.
As will be understood from the foregoing description, the copy timing control circuit according to the described embodiment of the present invention may be used to prevent the waste of video tape and further to enable the correct tape positioning upon tape-to-tape copying mode. Further, this and other advantages of the invention can be achieved by checking mode switch inputs in one cassette deck and, when a desired mode switch input is received, enabling drive of the other cassette deck to record the video signal from the one cassette deck. That is, synchronism between both decks is effectively obtained.
It will be readily apparent to a person skilled in the art that a number of variations and modifications can be made without departing from the true spirit of the invention which will now be pointed out in the appended claims.
Claims (8)
1. A copy timing control circuit for a double-deck video cassette recorder having at least two video cassette decks capable of tape-to-tape copying, said circuit comprising:
mode signal input means for generating first and second mode selection signals indicative of user selected operational modes of a first video cassette deck and a second video cassette deck, respectively;
copy signal input means for generating a copy signal indicative of user selection of a copy mode;
control means operably connected to said mode signal input means and said copy signal input means, for producing servo control signals to enable a playback mode of said second video cassette deck and to enable a record mode of said first video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a record pause mode of said first video cassette deck and said second mode selection signals are indicative of one of a playback mode and a still mode of said second video cassette deck, and for producing said servo control signals to enable a record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a stop mode of said first video cassette deck;
first motor driving means, connected to receive said servo control signals, for controlling driving of said first video cassette deck in response to said servo control signals; and second motor driving means, connected to receive said servo control signals, for controlling driving of said second video cassette deck in response to said servo control signals.
mode signal input means for generating first and second mode selection signals indicative of user selected operational modes of a first video cassette deck and a second video cassette deck, respectively;
copy signal input means for generating a copy signal indicative of user selection of a copy mode;
control means operably connected to said mode signal input means and said copy signal input means, for producing servo control signals to enable a playback mode of said second video cassette deck and to enable a record mode of said first video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a record pause mode of said first video cassette deck and said second mode selection signals are indicative of one of a playback mode and a still mode of said second video cassette deck, and for producing said servo control signals to enable a record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a stop mode of said first video cassette deck;
first motor driving means, connected to receive said servo control signals, for controlling driving of said first video cassette deck in response to said servo control signals; and second motor driving means, connected to receive said servo control signals, for controlling driving of said second video cassette deck in response to said servo control signals.
2. A circuit as claimed in claim 1, further comprised of said control means producing said servo control signals to enable said record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a playback mode of said first video cassette deck.
3. A circuit as claimed in claim 1, further comprised of said control means producing said servo control signals to enable said playback mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of said record pause mode of said first video cassette deck.
4. A circuit as claimed in claim 1, further comprised of said control means for producing said servo control signals to enable said record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of one of a rewind picture search mode and said record pause mode of said first video cassette deck.
5. A circuit as claimed in claim 2, further comprised of said control means producing said servo control signals to enable said record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of a playback mode of said first video cassette deck.
6. A circuit as claimed in claim 5, further comprised of said control means producing said servo control signals to enable said playback mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of said record pause mode of said first video cassette deck.
7. A circuit as claimed in claim 6, further comprised of said control means for producing said servo control signals to enable said record mode of said second video cassette deck in response to receipt of said copy signal when said first mode selection signals are indicative of one of a rewind picture search mode and said record pause mode of said first video cassette deck.
8. A method for controlling a first video cassette deck and a second video cassette deck with common control processor, said method comprising:
enabling a record mode of said first video cassette deck and enabling a playback mode of said second video cassette deck in response to receipt of a user generated copy signal when said first video cassette deck is in a record pause mode and said second video cassette deck is in one of a playback mode and a still mode;
enabling a record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in a stop mode;
enabling said record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in said playback mode;
enabling said playback mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in a record pause mode; and enabling said record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in one of a rewind picture search mode and said record pause mode.
enabling a record mode of said first video cassette deck and enabling a playback mode of said second video cassette deck in response to receipt of a user generated copy signal when said first video cassette deck is in a record pause mode and said second video cassette deck is in one of a playback mode and a still mode;
enabling a record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in a stop mode;
enabling said record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in said playback mode;
enabling said playback mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in a record pause mode; and enabling said record mode of said second video cassette deck in response to receipt of said copy signal when said first video cassette deck is in one of a rewind picture search mode and said record pause mode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900010063A KR950000927B1 (en) | 1989-07-08 | 1990-07-04 | Temperature control device of hot water feeder |
| KR10063/1990 | 1990-07-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2046405A1 CA2046405A1 (en) | 1992-01-08 |
| CA2046405C true CA2046405C (en) | 1999-03-30 |
Family
ID=19300862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002046405A Expired - Fee Related CA2046405C (en) | 1990-07-04 | 1991-07-05 | Copy timing control circuit for double-deck video cassette recorder |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5282093A (en) |
| EP (1) | EP0466385B1 (en) |
| CA (1) | CA2046405C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950012190B1 (en) * | 1991-01-31 | 1995-10-14 | 삼성전자 주식회사 | Servo contral method for double deck |
| JP3134894B2 (en) * | 1992-01-16 | 2001-02-13 | ソニー株式会社 | Apparatus for detecting the presence or absence of duplication prevention processing |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5025324A (en) * | 1984-09-07 | 1991-06-18 | Hashimoto Corporation | Method of and apparatus for recording information on both a main recording medium and an endless recording medium for repeated event monitoring |
| US4768110A (en) * | 1984-09-20 | 1988-08-30 | Go-Video, Inc. | Video cassette recorder having dual decks for selective simultaneous functions |
| DE3685383D1 (en) * | 1985-08-30 | 1992-06-25 | Sony Corp | MAGNETIC RECORDING AND PLAYBACK DEVICE. |
| JPS6267730A (en) * | 1985-09-20 | 1987-03-27 | Toshiba Corp | Synchronizing driving device |
| US4763209A (en) * | 1985-09-25 | 1988-08-09 | Sam Sung Electronics Co., Ltd. | Autoreverse double deck system |
| DE3636295C2 (en) * | 1985-10-25 | 1996-02-08 | Samsung Electronics Co Ltd | Arrangement for controlling a double-deck hinge system |
| US5194963A (en) * | 1988-08-09 | 1993-03-16 | Go-Video, Inc. | Dual deck videocassette recorder system |
| JPH0664775B2 (en) * | 1988-09-22 | 1994-08-22 | ティアツク株式会社 | Playback device |
| JPH02260257A (en) * | 1989-03-31 | 1990-10-23 | Shintomu Kk | Remote control device for dubbing and video device with simple type synchronizing dubbing function |
-
1991
- 1991-06-28 US US07/723,256 patent/US5282093A/en not_active Expired - Lifetime
- 1991-07-02 EP EP91306009A patent/EP0466385B1/en not_active Expired - Lifetime
- 1991-07-05 CA CA002046405A patent/CA2046405C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0466385A2 (en) | 1992-01-15 |
| CA2046405A1 (en) | 1992-01-08 |
| EP0466385B1 (en) | 1997-02-19 |
| EP0466385A3 (en) | 1993-06-09 |
| US5282093A (en) | 1994-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |