WO2003054708A1 - Systeme et procede de lecture de document electronique - Google Patents
Systeme et procede de lecture de document electronique Download PDFInfo
- Publication number
- WO2003054708A1 WO2003054708A1 PCT/JP2002/013024 JP0213024W WO03054708A1 WO 2003054708 A1 WO2003054708 A1 WO 2003054708A1 JP 0213024 W JP0213024 W JP 0213024W WO 03054708 A1 WO03054708 A1 WO 03054708A1
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- WIPO (PCT)
- Prior art keywords
- electronic document
- browsing
- resolution level
- page
- user
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2350/00—Solving problems of bandwidth in display systems
Definitions
- the present invention relates to an electronic document browsing system and method.
- the present invention relates to an electronic document browsing system and method for browsing a large amount of electronic documents such as electronic magazines, newspapers, and in-house documents. Background art
- an electronic document (hereinafter simply referred to as an electronic document) stored in an electronic document server, in general, various types of data including a LAN (Local Area Network), a WAN (Wide Area Network) and the like are used.
- An image is displayed on the display screen of the user's terminal via the communication network.
- the image transmission method generally uses a progressive transmission technology.
- the progressive transmission technology images are displayed gradually and sharply (gradually increasing the resolution) over several stages during image transmission.
- Document 1 Japanese Patent Application Laid-Open No. 2000-520261 (hereinafter referred to as Document 1) discloses the following technology.
- the user specifies an important area of the image in advance. Images specified as important areas are transmitted before images outside the important areas.
- Document 2 Japanese Patent Application Laid-Open No. H11-124224
- the document image specified by the user (document image) is transmitted at two levels of resolution using the document layout structure. That is, it identifies the structure of the layout in the document image, and is more likely to be referenced by the user.
- the project is transmitted to the user terminal at a high resolution.
- layer objects that are unlikely to be referred to by the user are transmitted to the user terminal at a low resolution.
- Reference 3 discloses the following technology.
- possible operating time based on remaining battery power is calculated.
- the transmittable file size (data amount) is calculated based on the calculated possible operation time and data communication speed.
- the resolution level of the image file according to the calculated transmittable file size is determined, and the image is transmitted at the determined resolution level.
- the electronic documents to be browsed by the electronic document browsing system include not only electronic books and electronic magazines one by one, but also collective electronic documents of search results hit by keyword search. Since the data volume of electronic documents is enormous, it takes a lot of time to download all the electronic documents to the user terminal. In general, a user generally wants to confirm the content of an electronic document being received and where the desired content is located as soon as possible. That is, in the electronic document browsing system, it is required to download a necessary electronic document as soon as possible without imposing a burden on a user as much as possible.
- image information of an important area designated by a user is transmitted progressively prior to image information of other areas.
- the technique disclosed in Document 2 uses a layout structure of a document, but performs transmission and display of a layout object at fixed high and low resolutions. Therefore, depending on the layout object included in the document image, there are cases where transmission takes a long time and cases where transmission takes a short time, and the transmission time becomes uneven. This gives a sense of incongruity to the user and causes stress.
- a possible operating time is calculated from the remaining battery level, and an image is transmitted at a resolution level corresponding to the calculated possible operating time. Therefore, there is a drawback in that it is not possible to specify a specific area or a browsing speed according to the user's preference, and it is not possible to control various browsing modes by selecting the user.
- Still another object of the present invention is to provide an electronic document browsing system and a method thereof capable of guaranteeing browsing conditions set by a user even when the communication speed of a data transmission network fluctuates. Disclosure of the invention
- An electronic document browsing system is an electronic document browsing system which enables browsing of an electronic document stored in a file in response to a browsing request from a user via a communication network.
- an electronic document browsing system digitizes a document to be browsed, and analyzes a layout structure of each page of the document by a document analyzing unit, and each area constituting a layout for each page For each image, a table containing at least the different resolution levels and the amount of data corresponding to each of these resolution levels is generated.
- the transmission time and data amount per page are calculated based on the communication speed of the communication network and the browsing speed.
- a calculating unit that determines a resolution level corresponding to the calculated data amount with reference to the table, and presents a page of an image corresponding to the resolution level to a user during a transmission time.
- An electronic document browsing system digitizes a document to be browsed, and analyzes a layout structure of each document page for each page of the document, and an area for forming a layout for each page.
- a table generation unit that generates a table that includes a table including a different resolution level, a similarity and an amount of data of the image of each resolution level with respect to the original image, and a specific similarity of the browsed page.
- the resolution level of each area corresponding to the similarity closest to the specific similarity of the parentheses above this specific similarity is referred to by referring to the table.
- a control unit for presenting a page of the image corresponding to the resolution level to the user during the transmission time.
- An electronic document browsing method is an electronic document browsing method in which an electronic document stored in a file can be browsed in response to a browsing request from a user via a communication network.
- an electronic document browsing method includes the steps of: digitizing a document to be viewed; analyzing a layout structure of each page of the document; and configuring each area constituting a layout for each page For each image, a step for generating a table including at least the different resolution levels and the data amount corresponding to each of these resolution levels, and the designation of the speed priority mode in which the browsing speed is instructed.
- an electronic document browsing method including the steps of digitizing a document to be viewed, analyzing a layout structure of each page of the document, and configuring a layout for each page.
- Different resolution levels for each image in the area Generating a table including the similarity and the data amount of the image of each resolution level with respect to the original image, and responding to a browsing request including a designation of a similarity priority mode for guaranteeing a specific similarity of a browsed page. Then, by referring to the table, the resolution level of each area corresponding to the similarity that is equal to or greater than the specific similarity and is closest to the specific similarity is obtained, and the image page corresponding to the obtained resolution level is transmitted in the transmission time. And a control step to be presented to the user during the period.
- the operation of the present invention is as follows.
- the document is divided for each page into meaningful areas (significant areas), and a similarity table showing the similarity and the data amount corresponding to the data having the multi-resolution level of each area is created.
- the resolution is set so that each area of the electronic document can be received at the browsing speed specified by the user in consideration of the communication speed of the communication network. If the user's area of interest is set, transmission is performed at a resolution that allows the user to view the area of interest, and for other areas, the user's browsing speed is reduced while taking into account the communication speed of the communication network. Set the resolution to protect.
- FIG. 1 is a block diagram schematically showing a configuration of an embodiment of an electronic document browsing system according to the present invention.
- FIG. 2 is a block diagram showing details of the document analysis unit shown in FIG.
- FIG. 3 is a block diagram showing details of the browsing control unit shown in FIG. 1,
- 4A to 4D are diagrams showing an example of a page layout and a display example of a page corresponding to the browsing mode.
- FIG. 5 is a diagram showing an example of a similarity table corresponding to the page layouts of FIGS. 4A to 4D.
- FIG. 6 is a flowchart for explaining the operation of the document analysis unit shown in FIG.
- FIG. 7 is a flowchart for explaining a part of the operation of the embodiment of the present invention
- FIG. 8 is a flowchart following FIG. 7 for explaining a part of the operation of the embodiment of the present invention.
- FIG. 9 is a flowchart following FIG. 7 for explaining a part of the operation of the embodiment of the present invention.
- FIG. 1 is a block diagram schematically showing a configuration of an embodiment of an electronic document browsing system according to the present invention.
- a server 10 and a user terminal 20 are mutually connected via a communication network 30.
- the server 10 includes a document analysis unit 1 and an electronic document file 2.
- the document analysis unit 1 digitizes documents, analyzes features and structures for each page, and creates a similarity table described later.
- the electronic document file 2 stores electronic document information 130 including electronic document data acquired by the document analysis unit 1 and a similarity table.
- the user terminal 20 includes a page combining unit 3, a display setting unit 4, and a browsing control unit 5.
- the page synthesizing unit 3 decodes data based on the stream data from the electronic document file 2 of the server 10 and synthesizes the electronic document pages progressively.
- the page combining unit 3 combines the images divided for each area.
- the display setting unit 4 receives the browsing instruction 100 from the user and displays the image synthesized by the page synthesizing unit 3.
- the display setting unit 4 provides an interface with the user.
- the user can also perform a browsing instruction 100 such as a browsing mode selection / browsing speed via the display setting unit 4 as described later.
- the browsing control unit 5 reads the stream data of the similarity table from the electronic document file 2 of the server 10.
- the browsing control unit 5 also controls the user terminal 20 according to the contents of the similarity table, the communication speed of the communication network 30, and the contents of the browsing instruction 100 input from the user via the display Z setting unit 4. Access control of data between the server and the server 10 is performed.
- FIG. 2 shows the internal configuration of the document analysis unit 1.
- the document analysis unit 1 includes a document digitization input unit 11, a layout analysis unit 12, and a similarity table generation unit 13.
- the document digitization input unit 11 digitizes documents and compresses and codes the digitized image data. For electronic documents such as HTML, compression and coding are performed as image data.
- the document is output to the layout analysis unit 12 as image data 110 such as JPEG or JPEG2000.
- the layout analysis unit 12 performs a layout analysis on the image data 110 from the document digitization input unit 11 and acquires the layout information 120.
- the similarity table generation unit 13 divides the image data 110 into a plurality of significant areas based on the layout information 120 from the layout analysis unit 12.
- the similarity table generation unit 13 also calculates, for each of the divided regions, the similarity between a plurality of images having different resolutions and the original image, and the data amount of each of the plurality of images having different resolutions, A similarity table 130 is generated.
- images having different resolutions which are images obtained by combining different layers, are also included.
- the similarity table 130 will be described later in detail.
- FIG. 3 shows the internal configuration of the browsing control unit 5 of the user terminal 20.
- the browsing control unit 5 includes a similarity table reading unit 51, a communication speed measuring unit 52, a timer control unit 53, a maximum specific similarity matching unit 54, and a progressive control unit 55.
- the similarity table reading unit 51 reads stream data 201 of the similarity table from the electronic document file 2 of the server 10.
- the similarity table reading unit 51 outputs the acquired similarity tables 5110 and 511.
- the communication speed measurement unit 52 performs browsing based on the similarity table 5 10 obtained by the similarity table reading unit 51, the browsing speed 5 20 specified by the user, and the communication speed of the communication network 30.
- the communication speed 530 corresponding to the communication time per page is calculated.
- the timer control unit 53 controls the browsing (page turning) time based on the calculated communication speed 5300 and the browsing speed set by the user input via the display setting unit 4. Page display information 5 3 1 to be calculated.
- the maximum specific similarity collation unit 54 changes the resolution of the electronic document based on the page display information 531 and the similarity table 5111 so that the electronic document can be browsed at the browsing speed specified by the user.
- Create control information 540 The maximum specific similarity matching unit 54 also guarantees the resolution specified by the user based on the page display information 531 and the similarity table 5111 so as to maximize the browsing speed. It is also possible to create page control information 540 that changes the resolution of the electronic document.
- the progressive control unit 55 sends an image data request 550, which is an image browsing request including at least resolution level information, to the server 10 based on the page control information 540.
- the progressive control unit 55 also sends to the server 10 an image data request 550 in which the resolution level has been changed as necessary, such as a user input.
- the server 10 receives the image data request 550 via the communication network 30 and sends an image file (electronic document) matching the image data request.
- the user refers to the resolution level of the image data request 550, and sends an image file matching this resolution level to the user terminal 20.
- the page synthesizing unit 3 of the user terminal 20 receives the image file from the server 10 and instructs the display of the image file via the display Z setting unit 4.
- the image file is divided for each area, the divided image files are combined, and the display of the combined image file is instructed via the display / setting unit 4.
- FIG. 4A shows an example of a layout structure of a certain page of an electronic document.
- a document printed on paper is scanned by the document digitizing input unit 11 to be converted into an electronic document, and image data 110 in JPEG 2000 format is created.
- the electronic document data is stored in the electronic document file 2.
- the electronic document is divided into a plurality of areas.
- the area indicated by 600 is a title area, and in this example, there are two title areas.
- the area indicated by 61 The area is the chart area, the upper area is the chart area, and the lower area is the table area.
- 602 is a paragraph area composed of a character string, and is composed of two areas.
- layout analysis is performed by performing layer analysis, and layout information 120 is created.
- the layout information generated here is information indicated by “pattern and area” in the table shown in FIG. 5, and indicates the name of each area and its coordinates.
- the layout analysis technology is a well-known technology, and for example, a technology described in Japanese Patent Application Laid-Open No. 07-192083 can be used.
- 4B to 4D are schematic diagrams showing how the electronic document shown in FIG. 4A is displayed on the terminal side in this embodiment.
- Fig. 4B is a display example when the user's interest area is the title area in the speed priority mode.
- Fig. 4C shows a display example when the user's area of interest is a chart area in the speed priority mode.
- FIG. 4D is a display example in the case of the similarity priority mode.
- FIG. 5 shows an example of the similarity table 130 created by the similarity table creation unit 13 using the layout information 120 obtained by analyzing the electronic document shown in FIG. 4A by the layout analysis unit 12. Show.
- the similarity table includes, for each area in FIG. 4A, a region coordinate indicating the position (in the page) and a resolution level in which the similarity is associated with the data amount (the size of the stream data). It is expressed as Here, the area coordinates, for example, for the title area 1, are indicated by two points of coordinates (X1, y1) and coordinates (X2, y2). One of these two points indicates, for example, the upper left corner of the four corners defining the area, and the other indicates the lower right corner.
- the similarity is information indicating the degree of similarity to the original electronic document stored in the server 10. In this example, the highest similarity is 1.0, which means that the similarity 1.0 is equal to the resolution of the original electronic document.
- the resolution (similarity) decreases as the numerical value of the similarity decreases.
- FIG. 6 is a flowchart showing the operation of the document analysis unit 1 of FIG.
- the document digitizing input unit 11 creates digitized data from a paper document using a device such as a scanner (step S 1). Thereafter, the digitized data is compressed and coded according to a fixed format such as JPEG 2000 (step S2), and output to the layout analysis unit 12 as image data 110.
- a device such as a scanner
- JPEG 2000 JPEG 2000
- the layout analysis unit 12 performs a layout analysis for each page using the image data 110 (step S3).
- this page is composed of two document titles 600, one figure and one table 601, and two character string paragraphs 602. I have.
- the similarity table generation unit 13 Based on the layout information 120, the similarity table generation unit 13 performs similarity between the lowest resolution 0 level and the highest resolution 6 level (for example, JPEG 2000) for each area. The degree is set, and a similarity table 130 is generated.
- step S4 the data amount of each area corresponding to each resolution level is also represented as a set in this table.
- the title area and the figure area show the same similarity value at the same resolution level, but this is an example. It is just doing.
- the same similarity value may be used, or the similarity value may be changed for each region.
- the similarity value is set high even if the resolution level is low, the image in the figure area is displayed with little change from the original image even if the resolution level is somewhat low.
- the value of similarity is set low, a reduction in the amount of data can be expected.
- the similarity table creation unit 13 receives the image data 110 as input, and also creates image data (electronic document data) corresponding to each resolution level of each area. For example, a total of seven types of image data (electronic document data) having seven levels of resolution from resolution levels 0 to 6 are created from the diagram shown in FIG. The image for each resolution level of each area is stored in the electronic document file 2.
- the similarity table creator 13 creates image data corresponding to the resolution level of each area. There is also an example in which no is created. For example, when there is a browsing request for the area of the electronic document from the user terminal 20, an image is generated according to the resolution level included in the browsing request, and the generated image is sent to the user terminal 20. In this case, there is an effect that the capacity of the electronic document file 2 can be reduced.
- the electronic document data and the similarity table 130 thus obtained are stored in the electronic document file 2 (step S5).
- the browsing modes include a “speed priority mode” in which the page turning speed (browsing speed) is maintained constant and a “similarity priority mode” in which the similarity (resolution) is maintained constant.
- the user can set the viewing mode via the display setting unit 4.
- the speed priority mode it is necessary to specify a browsing speed.
- a browsing speed it is possible to specify, for example, 1 page second ⁇ 3 page seconds.
- the user specifies via the display setting unit 4.
- the speed priority mode it is also possible to specify an area (specific area) in which the user is interested.
- the user designates a title area, a chart area, a paragraph area, other areas, or a combination thereof through the display / setting unit 4.
- the specific area By specifying the specific area, the page can be turned at the specified browsing speed while maintaining the predetermined specific similarity in the specified specific area.
- the specific area is not set (default). In this case, the similarities of all areas are treated equally.
- a similarity of 1.0 means that the original region image and the region image completely match.
- the threshold is determined by visual experiment. However, it can be specified by the user. “Specific similarity” represents this threshold.
- the similarity is not necessarily the same even at the same resolution level.
- the resolution level is 3
- the similarity of the title area is 0.91
- the similarity of the table area is 0.8.
- the resolution level is not always the same value.
- the similarity of electronic documents is changed according to the communication status of the communication network or the browsing speed of the user.
- the resolution level is set to a specific similarity or higher, the amount of image data exceeds the communication speed of the communication network, and the speed of the image data can be adjusted according to the browsing speed of the user. May not work.
- the maximum specific similarity that guarantees the browsing speed of the user and maximizes the communication speed of the communication network is set.
- a specific area of the electronic document may be received with a resolution higher than the specific similarity, and the maximum specific similarity may be set for other areas.
- the maximum specific similarity is the resolution level when the electronic document cannot be transmitted at a resolution level higher than the specific similarity and the browsing speed of the user is satisfied and the communication network is fully utilized.
- the present invention also provides a mode in which an electronic document can be browsed at a resolution higher than a specific similarity even if the browsing speed is somewhat sacrificed.
- This embodiment is referred to as “similarity priority mode J” in this embodiment.
- the value of “specific similarity” is set to “0.9”.
- the operation in the speed priority mode will be described in detail with reference to FIGS.
- the user sets the browsing mode to “speed priority mode”, the browsing speed to “3 sec. J”, and the interest area to “title area” in the display setting section 4.
- the user inputs a browsing instruction 100 to the display setting unit 4 (step S11).
- the browsing instruction 100 of the user may be a method of directly specifying a URL (Uniform Resource Locator) of an electronic document to be browsed, or a method of browsing by the user.
- a method of presenting an electronic document and allowing the user to make a selection may be used.
- various other forms are conceivable.
- the browsing instruction is input to the timer control unit 53 of the browsing control unit 5.
- the browsing control unit 5 transmits an instruction to connect the user terminal 20 and the server 10 to the server 10 via the communication network 30.
- the server 10 sends a list of electronic documents stored in the electronic document file 2 to the user terminal 20 when there is a browsing instruction from the user of the user terminal 20.
- the user terminal 20 Upon receiving the list from the server 10, the user terminal 20 displays the list via the page combining unit 3 and the display setting unit 4. The user can start browsing the electronic document by selecting a single electronic document of interest from the electronic document list and pressing the browse button (parabolic flipping button).
- the timer control unit 53 sends the location URL (Uniform Resource Locator) of the electronic document to which the new page belongs and the page number (for example, 1) to the server 10 (step S12). If there are no multiple electronic document images, the page numbers are not necessarily required.
- location URL Uniform Resource Locator
- the similarity table reading unit 51 reads the stream data 201 of the similarity table of the electronic document from the server 10 (step S13).
- the browsing mode at this time is quick Since the mode is the priority mode (step S14), the communication speed is calculated by the communication speed measuring unit 52 (step S15).
- the communication speed measuring unit 52 in this example calculates the communication speed 530 based on the communication speed of the communication network 30 and the browsing speed 520 specified by the user.
- the communication speed of the communication network 30 can be easily calculated from a similarity table input from the server 10 via the similarity table reading unit 51, an electronic document actually transmitted from the server, and the like.
- the communication speed measuring unit 52 Based on the communication speed of the communication network of 64 Kbps and the browsing speed of three seconds set by the user, the communication speed measuring unit 52 has a time (communication time) of about 0.33 seconds per page, and Then, about 21.3 Kb is calculated as the data amount D at that time (step S16). That is, the communication speed per page is measured.
- the measurement of the communication speed is performed for each page. For example, even if the communication speed of the communication network fluctuates from 64 Kb ps to 32 Kb ps, the browsing speed can be increased or decreased by increasing or decreasing the time and data amount allocated to one page (in this example, about 10.7 Kb). Can be guaranteed.
- the maximum specific similarity matching unit 54 determines the maximum specific similarity in the title area (step S 17) specified by the user as the area of interest. Collate.
- resolution level 3 can be determined (step S18).
- the amount of stream data in the other four areas is 1 OOKb, 100 Kb, 100 Kb, and 100 Kb, and the data amount D2 is as follows.
- the amount of stream data in each of the four areas is 4.5 Kb
- the data amount D 2 is as follows.
- resolution level 2 can be determined.
- the progressive control unit 55 sets the resolution in the two title areas to the resolution level 3 and the resolution in the other four areas to the resolution level 2.
- the image data request 550 including the information on the resolution level of each area and the coordinate information is sent to the server 10 (step S20).
- the page synthesizing unit 3 decodes data based on the stream data 200 from the server 10 and synthesizes the electronic document pages progressively.
- Display Z setting section 4 displays the page image 300 synthesized by the page synthesizing unit 3 (step S21).
- An outline of the display screen is shown in Figure 4B.
- FIG. 4B shows an example in which a title region is set as the region of interest.
- the description is omitted, if a chart region is set as the region of interest, the region is displayed as shown in FIG. 4C.
- the similarity is set taking into account the communication speed and the browsing speed. Is determined.
- step S24 in FIG. 8 the timer control section 53 increments the page number by 1 when there is no stop instruction or when it is not the last page (step S24). 25, S26, S27), sends an instruction to switch to the next new page. If there is no instruction from the user to stop page turning, the process returns to step S15, and the above processing is repeatedly performed.
- the title area is set as the specific area in which the user is interested, but the same processing is executed when another area is specified. If there is no region of interest (default) in step S17 of the flowchart shown in FIG. 7, the default part shown in the lowermost part of the table in FIG. 5 is referred to. Then, the similarity (resolution) corresponding to the data amount closest to the data amount D is obtained when the similarity of the default portion is equal to or smaller than the data amount D per page calculated in step S16 (step S16). S22). In this example, since the page data amount is 21.3 Kb, referring to FIG. 5, the resolution level 2 is selected. Then, an image data request including the resolution level information is sent to the server 10 (step S23). Subsequent processing is performed from step S21.
- the user has set the browsing mode to “similarity priority mode” and the region of interest to “default (not set)” in the display setting unit 4.
- the first operation when browsing is the same as the first operation when browsing in the speed priority mode. 1 "! ⁇ SI 4 is performed.
- the maximum specific similarity matching unit 54 obtains the resolution level in each area while maximizing the specific similarity ⁇ ⁇ .9 J (step S31). ).
- the resolution level n is determined while comparing the similarities in order from the highest similarity value to the lowest similarity value.
- the resolution level ⁇ satisfies the following definition (step S32).
- the resolution level n that satisfies the above condition is 3 for the two title areas, 3 for the figure area, 4 for the table area, and 4 for the two paragraph areas.
- the progressive control unit 55 sends the resolution level information and the coordinate information of each area thus obtained to the server 10 (step S33).
- the page synthesizing unit 3 decodes the data based on the stream data 200 from the server 10 and synthesizes the electronic document pages progressively.
- the display setting unit 4 displays the page image 300 synthesized by the page synthesizing unit 3 (step S34). The display screen is shown in Fig. 4D.
- the display status 400 from the display setting unit 4 is transmitted to the timer control unit 53.
- the timer control section 53 repeats the above processing.
- the page number is incremented by 1 and an instruction to switch to the next new page is transmitted (step S38).
- the page turning is stopped when the last page is reached (the first page in the case of reverse turning) or when the user wants to read a certain page in detail, the user instructs the page turning stop. May be requested.
- the timer control section 53 sends an instruction not to increase the page number and an instruction to display the entire screen at the maximum resolution (step S28 in FIG. 8).
- the progressive control section 55 requests the server 10 progressively for the remaining stream data based on the resolution information of the page immediately before that has already been transmitted.
- image data requests 550 from resolution levels 4 to 6 in the same area continue to be progressively transmitted to the server. 10, and in the four areas of resolution level 2, image data requests 550 up to resolution levels 3, 4, 5, and 6 are progressively sent to the server 10.
- the page synthesizing section 3 decodes data based on the stream data 200 from the server 10 and synthesizes the electronic document pages progressively.
- the display setting unit 4 displays a full-screen page image 300 having the highest resolution (step S30). The display screen is shown in Fig. 4A.
- the browsing control unit 5 may be provided on the server 10 side
- the page combining unit 3 may be provided on the server 10 side.
- the electronic document browsing system is particularly suitable for an electronic document browsing system for browsing a large amount of electronic documents such as digitized magazines, newspapers, and in-house documents.
- the electronic document browsing system monitors the speed of the communication line when browsing a large amount of electronic documents stored on a server on a communication network, and monitors the speed of the communication line to set the page turning speed set by the preference of the router. Documents can be displayed. As a result, it is possible to smoothly switch the page screen, to provide a more comfortable browsing environment, and to provide the user with uncomfortable feeling and stress when browsing as in the related art.
- the electronic document browsing system also divides the digitized document into meaningful regions and creates a similarity table corresponding to the multi-resolution data of each region.
- This similarity table it is possible to select a region order at the time of document transfer to adapt to a region in which the user is interested.
- manual operation It is possible to overcome the drawbacks of specifying regions and fixing the order of regions.
- the electronic document browsing system further adjusts, in the speed priority mode, the amount of data allocated to each page even if the speed of the communication line fluctuates, and sets a predetermined value in an area in which the user is interested.
- the electronic document can be displayed with a specific similarity at the maximum speed.
- the similarity priority mode an electronic document can be displayed at a maximum speed while guaranteeing a specific similarity in a region where the user has a roar.
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/484,662 US7458015B2 (en) | 2001-12-12 | 2002-12-12 | Electronic document reading system and method |
CA002455672A CA2455672A1 (en) | 2001-12-12 | 2002-12-12 | Electronic document viewing system and method therefor |
JP2003555355A JPWO2003054708A1 (ja) | 2001-12-12 | 2002-12-12 | 電子文書閲覧システム及びその方法 |
AU2002366924A AU2002366924A1 (en) | 2001-12-12 | 2002-12-12 | Electronic document reading system and method |
EP02790736A EP1455279A4 (en) | 2001-12-12 | 2002-12-12 | SYSTEM AND METHOD FOR READING ELECTRONIC DOCUMENTS |
US12/236,259 US20090031218A1 (en) | 2001-12-12 | 2008-09-23 | Electronic document viewing system and method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2001-377987 | 2001-12-12 | ||
JP2001377987 | 2001-12-12 |
Publications (1)
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WO2003054708A1 true WO2003054708A1 (fr) | 2003-07-03 |
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PCT/JP2002/013024 WO2003054708A1 (fr) | 2001-12-12 | 2002-12-12 | Systeme et procede de lecture de document electronique |
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US (2) | US7458015B2 (ja) |
EP (1) | EP1455279A4 (ja) |
JP (1) | JPWO2003054708A1 (ja) |
CN (1) | CN1308853C (ja) |
AU (1) | AU2002366924A1 (ja) |
CA (1) | CA2455672A1 (ja) |
WO (1) | WO2003054708A1 (ja) |
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JP2006252370A (ja) * | 2005-03-14 | 2006-09-21 | Gt Internet Information Co Ltd | ネット上で出版物の閲覧を提供する方法 |
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US10186765B2 (en) | 2006-01-24 | 2019-01-22 | Avery Dennison Retail Information Services, Llc | Radio frequency (RF) antenna containing element and methods of making the same |
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US9887448B2 (en) | 2010-06-14 | 2018-02-06 | Avery Dennison Retail Information Services, Llc | Method of manufacturing a radio frequency identification device |
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US10158161B2 (en) | 2010-06-14 | 2018-12-18 | Avery Dennison Retail Information Services, Llc | Production line for making short run radio frequency identification tags and labels |
US10770777B2 (en) | 2010-06-14 | 2020-09-08 | Avery Dennison Corporation | Foil laminate intermediate and method of manufacturing |
US11710886B2 (en) | 2010-06-14 | 2023-07-25 | Avery Dennison Retail Information Services Llc | Foil laminate intermediate and method of manufacturing |
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US8931166B2 (en) | 2011-05-19 | 2015-01-13 | Tecnomar Oy | Manufacturing method of electrical bridges suitable for reel to reel mass manufacturing |
Also Published As
Publication number | Publication date |
---|---|
EP1455279A4 (en) | 2010-01-20 |
EP1455279A1 (en) | 2004-09-08 |
CA2455672A1 (en) | 2003-07-03 |
CN1535426A (zh) | 2004-10-06 |
CN1308853C (zh) | 2007-04-04 |
AU2002366924A1 (en) | 2003-07-09 |
US20040268221A1 (en) | 2004-12-30 |
US20090031218A1 (en) | 2009-01-29 |
JPWO2003054708A1 (ja) | 2005-04-28 |
US7458015B2 (en) | 2008-11-25 |
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