JP2019168819A - Information processing unit, information processing program, browsing device, browsing program and information processing system - Google Patents

Abstract

To provide a technique that makes restoration difficult to protect an image from image copying and placing conducted without a permission of an administrator having a copyright.SOLUTION: A server divides a sample content 4 into multiple divided images 6A, 6B, 6C and converts a display form of the divided image by performing at least one of rotation processing and inversion processing for each of the divided images. The server generates conversion information indicating a conversion content performed for each of the converted divided images and transmits the converted divided images and the conversion information in response to a browsing request of a content from a display.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an information processing device, an information processing program, a browsing device, a browsing program, and an information processing system.

  Patent Document 1 connects display means and a wearable display device having the transmissive display screen formed so that the transmissive display screen is positioned in front of the user's eyes when worn by the user. Connecting means; dividing means for dividing the display image into a first image and a second image comprising a portion other than the first image of the display image; displaying the first image on the display means; There is disclosed an information display device comprising display control means for controlling to display the second image on a mold display screen.

  Patent Document 2 discloses an image distribution program for causing a computer to execute processing for distributing image data to a Web browser, and receiving a request from the Web browser to request the computer to distribute the image data A step of generating a plurality of divided image data by dividing the image represented by the image data into a plurality of divided images, and a dummy divided image representing an image different from the divided image for at least one of the plurality of divided images A step of generating data; a list enumerating addresses of the divided image data and addresses of the dummy divided image data; a script executed on the Web browser when the Web browser renders a response to the request on the screen; The step of describing in said A step of describing parameters used for specifying the divided image data from the list in the script, and the list enumerates the response to the request until the screen drawing is completed. A step of describing in the script the process of downloading the divided image data and the dummy divided image data by accessing a certain address, and when the Web browser renders a response to the request on the screen, The step of dynamically adding an HTML tag for displaying the divided image data specified by the parameter on the screen is described in the script, and a response including the script is sent to the Web browser as a response to the request. Send -Up, the image distribution program for causing the execution is disclosed.

  In Patent Literature 3, image data or video data is transmitted to a server having an image processing function via a network, and the image data, video data, or other processing result subjected to predetermined image processing from the server. An image processing program to be executed by a computer that receives the image data, the image data or the video data being divided to generate a plurality of partial data, and a positional relationship between the partial data in the partial data Generating position information; associating identification information with the position information; assigning the identification information to the partial data; and passing the partial data to which the identification information has been added via the network. An image processing program for executing the step of transmitting to a server is disclosed.

  In Patent Document 4, in an electronic document file storage and retrieval method for extracting and displaying a file that matches a specified search condition from a plurality of stored electronic document files, each of the electronic document files is divided into a plurality of blocks. An electronic document file storage database stored in different areas with a plurality of different sets of division address information respectively added thereto, the plurality of sets of division address information, and key information for searching for storage files; Are searched, the search database is searched based on the input search condition, a plurality of sets of divided file address information of document files matching the search condition are extracted, and the obtained multiple databases are retrieved. Corresponding to each of the electronic document file storage databases based on a set of divided file address information An electronic document consisting of taking out a divided electronic document file from an area and integrating and displaying the obtained divided document file so that it can be seen completely based on division pattern information indicating how the document file was divided A file storage and retrieval method is disclosed.

JP2015-184921A JP 2017-151873 A JP 2008-98768 A JP 2004-246642 A

  With the development of the network environment, there are increasing opportunities to download images from a server and view the downloaded images on an information device such as a smartphone.

  On the other hand, if an image is stored in an information device, secondary use such as copying or reprinting the image may be performed without the permission of the administrator who owns the copyright of the image. Has been.

  For example, there is a case in which a method is used in which an original image is not inferred even if each divided image is viewed by increasing the number of divided images and subdividing the image.

  However, when the number of image divisions is increased, the original image is restored by combining the divided images by simply dividing them.

  The present invention provides an information processing apparatus that makes it difficult to restore an image by increasing the number of divisions of an image into divided images, rather than making it difficult to restore the original image from the divided image. An object is to provide an information processing program, a browsing device, a browsing program, and an information processing system.

  In order to achieve the above object, the information processing apparatus according to claim 1 is configured to divide an image into a plurality of divided images, and each of the divided images divided by the dividing unit. A conversion unit that converts the display form of the image, a generation unit that generates conversion information representing the content of conversion performed by the conversion unit, for each of the divided images converted by the conversion unit, and viewing the image In response to the request, each of the converted divided images constituting the image, and a transmission unit that transmits the conversion information associated with each of the converted divided images.

  In the invention according to claim 2, the conversion unit performs at least one of a plurality of types of conversion processes determined in advance at the image viewing request source for each of the divided images. .

  According to a third aspect of the present invention, the conversion unit converts the display form of the divided image using a conversion process randomly selected from the plurality of types of conversion processes.

  According to a fourth aspect of the present invention, the plurality of types of conversion processing are rotation processing and inversion processing of the divided images.

  According to a fifth aspect of the present invention, the conversion unit randomly sets a rotation angle in the rotation processing of the divided image and an inversion direction in the inversion processing of the divided image, and converts the display form of the division image.

  According to a sixth aspect of the invention, the dividing unit divides the image so that the image is restored when the divided images are overlapped.

  According to a seventh aspect of the present invention, the dividing unit divides the image into a lattice shape, and the divided images are included in each of the divided images so that the positions of the images divided into rectangles do not overlap each other. Constitute.

  According to an eighth aspect of the present invention, a region that does not include the image in the divided image is set as a transmissive region.

  The invention according to claim 9 is such that the dividing unit divides the image into a number of the divided images set in accordance with a display time of the image requested by a browsing device that browses the image. Divide the image.

  The invention of the information processing program according to claim 10 causes a computer to function as each part of the information processing apparatus according to any one of claims 1 to 9.

  The invention of the browsing device according to claim 11, each of the divided images of the image constituting the requested image, and a receiving unit that receives conversion information representing conversion processing performed on each of the divided images, For each of the divided images received by the receiving unit, a divided image before conversion in which the conversion process is performed is generated from the content of the conversion information corresponding to the divided image, and each of the divided images before conversion is generated. A restoration unit that restores the image from the display unit, and a display unit that displays the image restored by the restoration unit.

  In the invention described in claim 12, the content of the conversion process included in the conversion information is limited to the conversion process performed by the restoration unit.

  According to a thirteenth aspect of the present invention, the conversion process performed by the restoration unit is at least one of a rotation process and an inversion process of the divided image.

  In a fourteenth aspect of the present invention, each of the divided images received by the receiving unit includes a transmissive area.

  According to a fifteenth aspect of the present invention, the restoration unit restores the image by superimposing the generated divided images before conversion.

  The invention of the browsing program according to claim 16 causes the computer to function as each part of the browsing device according to any one of claims 11 to 15.

  The invention of the information processing system according to claim 17 is the information processing device according to any one of claims 1 to 9 and the browsing device according to any one of claims 11 to 15. ,including.

  According to the first, tenth, eleventh, sixteenth and seventeenth aspects of the present invention, by increasing the number of divisions for dividing an image into divided images, it becomes more difficult to restore the original image from the divided images. This has the effect of making it difficult to restore the image.

  According to the second aspect of the present invention, there is an effect that an image can be restored from the divided image by using a conversion process provided in advance in the browsing device that has requested the browsing.

  According to the third aspect of the present invention, it is possible to make it difficult to restore the image as compared with the case where the same conversion process is performed on each divided image.

  According to the fourth aspect of the invention, there is an effect that the display form of the divided image can be converted to a display form different from the original image.

  According to the fifth aspect of the present invention, it is possible to make it difficult to restore the image as compared with the case where the rotation angle in the rotation process and the setting of the reversal direction in the reversal process are regular. .

  According to the sixth aspect of the present invention, it is possible to reduce the time required to restore an image as compared with the case of restoring an image using encryption.

  According to the seventh aspect of the present invention, the time required for image division can be shortened compared to the case where the shape to be divided for each divided image is changed.

  According to the eighth aspect of the invention, when the divided images are superimposed, the entire image can be displayed.

  According to the ninth aspect of the present invention, there is an effect that the display time until the image requested by the browsing device to the information processing device is displayed on the browsing device can be kept within a predetermined time.

  According to the twelfth aspect of the present invention, it is possible to restore an image from a divided image without adding or changing a conversion process that can be performed by the browsing device.

  According to the thirteenth aspect of the present invention, there is an effect that an image can be restored with any browser.

  According to the fourteenth aspect of the invention, there is an effect that the image can be restored only by superimposing the respective divided images.

  According to the fifteenth aspect of the present invention, it is possible to reduce the time required to restore an image as compared with the case of restoring an image using encryption.

It is a figure which shows the structural example of an information processing system. It is a figure which shows an example of the functional block diagram in a content server. It is a figure which shows an example of the functional block diagram in a display apparatus. It is a figure which shows the principal part structural example of the electric system in a content server. It is a figure which shows the principal part structural example of the electric system in a display apparatus. It is a flowchart which shows an example of the flow of the division | segmentation process in a content server. It is a schematic diagram which shows an example of the division | segmentation process of a page image. It is a figure which shows an example of display image information. It is a figure which shows an example of conversion information. It is a figure which shows another example of conversion information. It is a flowchart which shows an example of the flow of the transmission process in a content server. It is a flowchart which shows an example of the flow of the display process in a display apparatus. It is a schematic diagram which shows an example of a display process.

  Hereinafter, the present embodiment will be described with reference to the drawings. In addition, the same code | symbol is provided to the component and process which have the same function through all the drawings, and the overlapping description is abbreviate | omitted.

  FIG. 1 is a diagram illustrating a configuration example of an information processing system 100 according to the present embodiment. As shown in FIG. 1, the information processing system 100 includes a content server 10 and a display device 20, and the content server 10 and the display device 20 are connected by a communication line 2.

  The content server 10 is an example of an information processing apparatus that stores data including content that the user desires to browse, that is, “content”. Hereinafter, the content server 10 is referred to as “server 10”. The server 10 is constructed by combining a single computer or a plurality of computers. Further, the server 10 may be constructed using cloud computing.

  The display device 20 is an example of a browsing device that requests the server 10 for content to be browsed and displays the acquired content on a screen. The display device 20 includes a reception function for receiving operations, a display function for displaying information, and a communication function for transmitting and receiving data by connecting to the communication line 2, such as a desktop computer, a tablet computer, a smartphone, and a wearable terminal. Is used.

  The server 10 that has received a content browsing request from the display device 20 transmits the requested content to the display device 20 that has requested the content.

  The communication line 2 may be a wired line or a wireless line, and even if it is a dedicated line used only by a specific user, it is a public line where the same line is shared by an unspecified number of users. May be.

  In addition, although the information processing system 100 illustrated in FIG. 1 includes only one display device 20, a plurality of display devices 20 may be included. Further, the information processing system 100 may include a plurality of servers 10.

  FIG. 2 is a diagram illustrating an example of a functional block diagram in the server 10. The server 10 includes functional units such as a content conversion unit 11, an image processing unit 12, a reception unit 13, and a transmission unit 14. The image processing unit 12 includes functional units such as a division unit 12A, a conversion unit 12B, and a generation unit 12C.

  Further, the server 10 includes storage areas for a content storage unit 15, a content information DB 16, a display image information DB 17, a display image storage unit 18, and a conversion information DB 19.

  Usually, “DB” is an abbreviation that means “Database” that manages data in association with a predetermined primary key. However, “DB” in the present embodiment does not indicate various commercial and non-commercial database applications, but represents a storage area for storing data. Needless to say, a database application may be used to manage a storage area for storing data.

  The content storage unit 15 stores a plurality of contents in advance, and the content stored in the content storage unit 15 is transmitted to the display device 20 in response to a browsing request from the display device 20.

  There is no restriction on the type of content stored in the content storage unit 15, but here, as an example, description will be made assuming that document data configured in units of pages is stored in the content storage unit 15.

  The content information DB 16 includes content information stored in the content storage unit 15. The content information includes, for example, a content ID, a content name, and a content path.

  The content ID is an identifier for uniquely identifying the content, and one content is selected by designating the content ID.

  The content name is the title of the content, and information that reminds the user of the content is set. For example, the file name of the content is set as the content name.

  The content path is information indicating a location where content is stored in the content storage unit 15.

  That is, when the content ID is designated, the content designated by the content ID can be obtained from the content storage unit 15 by referring to the content information stored in the content information DB 16.

  The content conversion unit 11 acquires content having the specified content ID from the content storage unit 15 and converts the acquired content in units of pages. The content conversion unit 11 assigns a page number to each converted page, and notifies the image processing unit 12 of the end of content conversion. Since the content of the content is handled as image data including text and a figure in the server 10, each content of the page unit included in the content is referred to as “page image 4”. The page image 4 is an example of an image in the present embodiment.

  When receiving the end of content conversion from the content conversion unit 11, the image processing unit 12 divides each page image 4 into a preset number of images by the division unit 12A. Each image obtained by dividing the page image 4 is referred to as a “divided image 6”. Each divided image 6 is assigned an image ID for uniquely identifying the divided image 6 by the dividing unit 12A.

  The conversion unit 12B converts the display form of each divided image 6 divided by the dividing unit 12A. Specifically, the conversion unit 12 </ b> B performs at least one of a plurality of types of conversion processing provided in advance on the display device 20 that requests content on the divided image 6. “The conversion process provided in advance in the display device 20” means, for example, a conversion process implemented in the display device 20 by adding to the display device 20 later, such as a plug-in module or an add-on module. Rather, it refers to a conversion process that is standard on the display device 20.

  The conversion unit 12B stores each converted divided image 6 subjected to the conversion process in the display image storage unit 18.

  The generation unit 12C generates, for each divided image 6, conversion information in which the content of the inverse conversion process for the conversion process performed on the divided image 6 by the conversion unit 12B is generated, and stores it in the conversion information DB 19. In addition, the generation unit 12C includes the content ID of the content including the page image 4 that is the division source of the divided image 6, the page number assigned to the page image 4 that is the division source of the divided image 6, and the division Information (hereinafter referred to as “display image information”) in which the image ID for identifying the image 6 and the image path indicating the storage location of the divided image 6 in the display image storage unit 18 are associated with each divided image 6 is referred to as the display image information DB 17. To remember.

  When receiving a content browsing request from the display device 20, the receiving unit 13 acquires the requested content from the display image storage unit 18 in units of pages. For example, when the first page of specific content is requested from the display device 20, each divided image 6 divided from the page image 4 corresponding to the first page is acquired from the display image storage unit 18.

  In addition, the reception unit 13 acquires conversion information associated with each divided image 6 acquired from the display image storage unit 18 from the conversion information DB 19 and notifies the transmission unit 14 of the acquired divided image 6 and conversion information. .

  When the transmission unit 14 receives the divided image 6 and the conversion information from the reception unit 13, the transmission unit 14 transmits a display message including the divided image 6 and the conversion information associated with the divided image 6 to the display device 20 for each divided image 6. To do. That is, when transmitting the divided image 6, the transmitting unit 14 transmits each divided image 6 constituting the page image 4 for one page by transmitting display messages to the display device 20 by the number of the divided images 6. . In other words, the transmission unit 14 transmits the divided image 6 in units of pages.

  On the other hand, FIG. 3 is a diagram illustrating an example of a functional block diagram in the display device 20. The display device 20 includes a transmission unit 21, a reception unit 22, a restoration unit 23, a display unit 24, and a browser 25.

  The transmission unit 21 transmits a browsing request for requesting the page image 4 of the content designated by the user to the server 10.

  The receiving unit 22 receives a display message for the browsing request transmitted by the transmitting unit 21 from the server 10.

  The restoration unit 23 acquires the divided image 6 and the conversion information from each display message received by the reception unit 22 in units of pages, refers to the conversion information for each received divided image 6, and the conversion unit 12B of the server 10 A divided image 6 (divided image 6 before conversion) before conversion processing is generated.

  The restoration unit 23 restores the page image 4 before being divided by the division unit 12A of the server 10 by superimposing the generated divided images 6 before conversion, and the restored page image 4 is displayed on the display unit. 24.

  When receiving the restored page image 4 from the restoration unit 23, the display unit 24 displays the page image 4 on the browser 25. As a result, the content requested by the user is displayed on the display device 20.

  Next, a configuration example of a main part of the electric system in the server 10 will be described with reference to FIG. The server 10 is configured using a computer 30, for example.

  The computer 30 includes a CPU (Central Processing Unit) 31 responsible for each functional unit of the server 10 illustrated in FIG. 2, a ROM (Read Only Memory) 32 that stores a program, and a RAM (a RAM used as a temporary work area of the CPU 31). Random Access Memory) 33, nonvolatile memory 34, and input / output interface (I / O) 35. The CPU 31, ROM 32, RAM 33, nonvolatile memory 34, and I / O 35 are connected via a bus 36.

  The nonvolatile memory 34 is an example of a storage device in which stored information is maintained even when power supplied to the nonvolatile memory 34 is cut off. For example, a semiconductor memory is used, but a hard disk may be used.

  For example, a communication unit 37, an input unit 38, and a display unit 39 are connected to the I / O 35.

  The communication unit 37 is connected to the communication line 2 and includes a communication protocol for transmitting and receiving messages to and from the display device 20.

  The input unit 38 is an input device that receives an instruction from a user and notifies the CPU 31 of the input unit 38. For example, a button, a touch panel, a keyboard, a mouse, and the like are used.

  The display unit 39 is a display device that displays information processed by the CPU 31 as an image. For example, a liquid crystal display or an organic EL (Electro Luminescence) display is used.

  FIG. 5 is a diagram illustrating a configuration example of a main part of the electric system in the display device 20. The display device 20 is configured using a computer 40, for example.

  Similarly to the configuration example of the main part of the server 10 shown in FIG. 4, the computer 40 is also used as a CPU 41 responsible for each functional unit of the display device 20 shown in FIG. 3, a ROM 42 for storing programs, and a temporary work area for the CPU 41. A RAM 43, a nonvolatile memory 44 for storing data even when the power is turned off, and an I / O 45. The CPU 41, ROM 42, RAM 43, nonvolatile memory 44, and I / O 45 are connected via a bus 46.

  Also, the units connected to the I / O 45 are the same as the main configuration example of the server 10 shown in FIG. 4 such as the communication unit 47, the input unit 48, and the display unit 49.

  Note that the units connected to the I / O 35 of the server 10 and the I / O 45 of the display device 20 are not limited to the units illustrated in FIGS. 4 and 5, respectively. For example, a voice recognition unit that recognizes the voice of the user may be connected. In this case, the server 10 and the display device 20 accept the user's instruction by voice and execute the function according to the accepted instruction.

  Next, the operation of the server 10 will be described in detail with reference to FIG.

  FIG. 6 is a flowchart illustrating an example of the flow of division processing executed by the CPU 31 when new content is stored in the content storage unit 15 of the server 10. In the following description, it is assumed that the content has already been converted to the page image 4.

  An information processing program for defining the division processing is stored in advance in the ROM 32 of the server 10, for example. The CPU 31 of the server 10 reads an information processing program stored in the ROM 32 and executes a division process.

  First, in step S10, the CPU 31 acquires one page image 4 of content.

  In step S20, the CPU 31 divides the page image 4 obtained in step S10 into a predetermined number of divided images 6.

  FIG. 7 is a schematic diagram illustrating an example of a process of dividing the page image 4 in the server 10. In the example of FIG. 7, the CPU 31 divides the page image 4 into three divided images 6A, 6B, and 6C. However, the number of divisions is not particularly limited as long as it is divided into a plurality of divided images.

  However, as described above, as the number of divisions of the page image 4 increases, the number of display messages transmitted to the display device 20 when a content browsing request is received from the display device 20 also increases. Since the communication speed of the message on the communication line 2 is slower than the processing speed of the program in the CPU 31, the increase in the number of display messages is the display time until the content is displayed on the display device 20. Leads to an increase in Accordingly, when the upper limit value of the content display time is determined in the display device 20 or when the user is required to improve the content display time, the content is displayed within the target content display time, for example. What is necessary is just to set the division | segmentation number of the page image 4. FIG.

  Note that the relationship between the number of divisions of the page image 4 and the content display time is obtained in advance by an experiment with an actual machine of the information processing system 100, a computer simulation based on the design specifications of the information processing system 100, and the like. You may memorize it beforehand. When it is not necessary to distinguish and describe the divided images 6A, 6B, and 6C, each divided image is referred to as “divided image 6”.

  When dividing the page image 4 into the divided images 6, the CPU 31 divides the page image 4 into, for example, a lattice shape. The page image 4 divided into a lattice shape is divided into a plurality of rectangles. In the example of FIG. 7, the page image 4 is divided into nine rectangles, that is, partial page images 4A to 4J. When it is not necessary to distinguish and explain the partial page images 4A to 4J, each partial page image is referred to as “partial page image 4Z”.

  Then, the CPU 31 divides the page image 4 into divided images 6 each including at least one of the partial page images 4A to 4J. In the example of FIG. 7, among nine partial page images 4A to 4J, a divided image 6A including partial page images 4A, 4D, and 4E, a divided image 6B including partial page images 4C, 4G, and 4H, and a partial page image The page image 4 is divided into divided images 6C including 4B, 4F, and 4J. That is, the CPU 31 divides the page image 4 so that the same partial page images 4A to 4J are not included in the plurality of divided images 6 while keeping the positions of the partial page images 4A to 4J. In other words, the CPU 31 separates the divided images 6A, 6B so that the positions of the partial page images 4A to 4J included in the divided images 6A, 6B, 6C do not overlap with the divided images 6A, 6B, 6C. , 6C.

  In addition, in each of the divided images 6A, 6B, and 6C, the CPU 31 sets an area where the partial page images 4A to 4J are not arranged as a transparent area. In the divided images 6A, 6B, and 6C, hatched areas are transmissive areas. The “transparent region” refers to a region having a degree of transparency that allows the content of the other divided image 6 to be visually recognized through the transparent region of the one divided image 6 when the divided images 6 are overlapped.

  Therefore, when the divided images 6A, 6B, and 6C in the example of FIG. 7 are overlapped, the page image 4 before the division is restored. That is, the CPU 31 divides the page image 4 so that the page image 4 is restored when the divided images 6 are superimposed. Each divided image 6 is assigned an image ID.

  Explaining the above-described method of dividing the page image 4 from another viewpoint, the CPU 31 generates the number of page images 4 to be divided by copying the page image 4, and each page image 4 includes at least the partial page image 4Z. When the partial page image 4Z included in each page image 4 does not overlap and all the divided images 6 are overlapped, the page image 4 before the division is restored. A divided image 6 is generated by setting a transparent region in each divided image 6.

  In the example of FIG. 7, the page image 4 is divided into a grid, but the shape of the partial page image 4Z is not limited to a rectangle. For example, other shapes such as an L shape and a U shape may be used. Further, the selection of the partial page images 4A to 4J included in each divided image 6 is not regular, and may be different for each page image 4. That is, in the divided images 6A, 6B, and 6C of the page image 4 of the first page and the divided images 6A, 6B, and 6C of the page image 4 of the second page, the divided images 6A of the respective page images 4 and the divided images 6B When comparing each other and the divided image 6C, transmissive regions may be set at different positions.

  In the example of FIG. 7, the transparent areas are set at the same positions in the divided images 6A, 6B, and 6C of the page image 4 of the first page and the divided images 6A, 6B, and 6C of the page image 4 of the second page. Yes. That is, the transmission area is set according to the arrangement pattern of the transmission area determined in advance for each code of the divided image 6 such as “6A”, “6B”, and “6C”. The CPU 31 selects which transmissive region arrangement pattern among a plurality of types is applied to which divided image 6, but the user may instruct it.

  In step S30, the CPU 31 selects one divided image 6 from each of the divided images 6 divided in step S20, performs at least one of rotation processing and inversion processing on the selected divided image 6, and performs division. The display form of the image 6 is converted. The CPU 31 randomly selects whether the divided image 6 is subjected to the rotation process, the inversion process, or both the rotation process and the inversion process. In addition, the rotation angle in the rotation process and the reverse direction in the reverse process are also randomly selected by the CPU 31.

  As a result, in the example of FIG. 7, the divided image 6A of the page image 4 of the first page is subjected to a rotation process of 180 degrees to the right and an inversion process in the horizontal direction. A rotation process of 270 degrees to the right is performed on the image 6B. Further, the 90 ° rotation processing and the vertical reversal processing are performed on the divided image 6C of the page image 4 of the first page.

  Further, the left and right direction inversion processing is performed on the divided image 6A of the page image 4 of the second page, and the right 180 degree rotation processing and the left and right rotation processing are performed on the divided image 6B of the page image 4 of the second page. Direction reversal processing is performed. Further, a rotation process of 90 degrees to the right is performed on the divided image 6C of the page image 4 of the second page. Thereby, compared with the case where the conversion process of step S30 is not performed, even if the divided images 6A, 6B, and 6C are overlapped, the page image 4 before the division is less likely to be recalled.

  Then, the CPU 31 generates, for each divided image 6, conversion information that records the content of the inverse conversion process for the conversion process performed on each divided image 6. The “inverse conversion process” refers to a conversion process for returning the divided image 6 subjected to the conversion process in step S30 to the divided image 6 before the conversion.

  For example, in the example of FIG. 7, the inverse conversion process for the divided image 6 </ b> A of the page image 4 of the first page is a left 180 degree rotation process and a horizontal inversion process, and the page image 4 of the first page is divided. The inverse transformation process for the image 6B is a left 270 degree rotation process. The inverse conversion process for the divided image 6C of the page image 4 of the first page is a left 90 degree rotation process and a vertical reversal process.

  Further, the inverse conversion process for the divided image 6A of the page image 4 of the second page is an inversion process in the horizontal direction, and the inverse conversion process for the divided image 6B of the page image 4 of the second page is rotated 180 degrees to the left. Processing and horizontal inversion processing. Further, the inverse conversion process for the divided image 6C of the page image 4 of the second page is a left 90 degree rotation process.

  The rotation process and the inversion process are an example of a conversion process provided in advance in the display device 20 as a process performed by the browser 25 of the display device 20.

  In step S40, the CPU 31 stores the divided image 6 subjected to the conversion process in step S40, for example, in the nonvolatile memory 34. The storage area of the nonvolatile memory 34 is an example of the display image storage unit 18.

  In step S50, the CPU 31 determines the content ID of the content including the page image 4 to be divided, the page number assigned to the page image 4 that is the division source, the image ID assigned to the divided image 6 in step S20, The image path indicating the storage location of the divided image 6 stored in the nonvolatile memory 34 in step S40 is associated with the divided image 6 and stored as display image information in, for example, the nonvolatile memory 34. The storage area of the nonvolatile memory 34 is an example of the display image information DB 17.

  FIG. 8 is a diagram illustrating an example of display image information stored in a predetermined storage area of the nonvolatile memory 34.

  In step S60, the CPU 31 stores the conversion information generated in step S30 in, for example, the nonvolatile memory 34. The storage area of the nonvolatile memory 34 is an example of the conversion information DB 19.

  FIG. 9 is a diagram illustrating an example of conversion information stored in a predetermined storage area of the nonvolatile memory 34. As illustrated in FIG. 9, the conversion information includes the image ID of the divided image 6 and the content of the reverse conversion process for the conversion process performed in step S <b> 30. However, the content of the conversion information is not limited to this. For example, information in which the image ID of the divided image 6 is associated with the content of the conversion process performed in step S30 may be used as the conversion information.

  FIG. 10 is a diagram illustrating an example of conversion information in which the content of the conversion process performed in step S <b> 30 is associated with the divided image 6. If the contents of the conversion process performed in step S30 are known, the contents of the inverse conversion process can be obtained. Thus, the conversion information may be information that restores the divided image 6 that has been subjected to the conversion process in step S30 to the divided image before conversion.

  In step S70, the CPU 31 determines whether or not there is an unselected divided image 6 among the divided images 6 divided in step S20. If there is an unselected divided image 6, the process proceeds to step S30.

  In step S30, the CPU 31 selects one unselected divided image 6 among the divided images 6 divided in step S20, and continues to step S30 until all the divided images 6 divided in step S20 are selected. The process of S70 is repeatedly executed. Thereby, the divided image 6 of the page image 4 for one page and the display image information and the conversion information corresponding to each divided image 6 are stored in the nonvolatile memory 34.

  If it is determined in step S70 that there is no unselected divided image 6, the process proceeds to step S80.

  In step S80, the CPU 31 determines whether or not an unacquired page image 4 exists in the content to be processed. If there is an unacquired page image 4, the process proceeds to step S10.

  In step S10, the CPU 31 acquires one unacquired page image 4, and repeatedly executes the processes in steps S10 to S80 until all the page images 4 included in the content are acquired. As a result, each page image 4 is divided into divided images 6, and each divided image 6 and display image information and conversion information corresponding to each divided image 6 are stored in the nonvolatile memory 34.

  On the other hand, if it is determined in step S80 that the unacquired page image 4 does not exist, the division process shown in FIG. 6 is terminated.

  As described above, when new content is stored in the server 10, each page of the content is divided into the divided images 6 and stored in the nonvolatile memory 34.

  Next, the operation of the server 10 when a content browsing request is received from the display device 20 will be described in detail with reference to FIG.

  FIG. 11 is a flowchart illustrating an example of a flow of transmission processing executed by the CPU 31 when a content browsing request is received from the display device 20. The browsing request includes a content ID and a page number of content to be displayed on the display device 20. That is, the display device 20 requests content in units of pages.

  An information processing program that defines the transmission process is stored in advance in the ROM 32 of the server 10, for example. The CPU 31 of the server 10 reads an information processing program stored in the ROM 32 and executes transmission processing.

  In step S100, the CPU 31 refers to the display image information stored in the non-volatile memory 34, and obtains the image ID and image path of the divided image 6 constituting the page specified by the content ID and page number of the browsing request. To do. In the example of FIG. 8, for example, when content ID = “DOC-001” and page number = “1” are designated, the CPU 31 determines each of “IMG-001”, “IMG-002”, and “IMG-003”. An image ID and image paths “IMG / IMG-001”, “IMG / IMG-002”, and “IMG / IMG-003” associated with each image ID are acquired.

  In step S110, the CPU 31 selects one image ID from the image IDs acquired in step S100.

  In step S120, the CPU 31 refers to the image path of the image ID selected in step S110, and acquires the divided image 6 associated with the image ID from the nonvolatile memory 34.

  In step S130, the CPU 31 refers to the conversion information (see FIG. 9) and acquires conversion information associated with the image ID selected in step S110. For example, if the image ID selected in step S110 is “IMG-001”, the conversion information in FIG. 9 indicates that the image ID and content are conversion information with IMG-001 and “rotation = 180 degrees left, inversion = left / right”, respectively. Is acquired.

  In step S140, the CPU 31 generates a display message including the divided image 6 acquired in step S120 and the conversion information acquired in step S130. Note that the CPU 31 includes the number of divisions of the page image 4 corresponding to the page number of the content specified by the browsing request in the first display message generated after receiving the browsing request. Specifically, when the page number = “1” of the content ID = “DOC-001” is requested in the browsing request, in the example of the display image information in FIG. 8, the content ID = “DOC-001” and the page Since the number = “1” includes three divided images 6, the CPU 31 sets the number of divisions to “3”.

  As described above, since the display message is generated for each divided image 6, the number of display messages transmitted from the server 10 to the display device 20 in response to the browsing request is obtained by including the number of divisions in the first display message. This is grasped by the display device 20.

  In step S150, the CPU 31 controls the communication unit 37 and transmits the display message generated in step S140 to the display device 20.

  In step S160, the CPU 31 determines whether there is an image ID not yet selected in step S110 from the image IDs acquired in step S100. If there is an unselected image ID, the process proceeds to step S110.

  In step S110, the CPU 31 selects an unselected image ID, and repeatedly executes the processes in steps S110 to S160 until all image IDs are selected. Thereby, the display message containing the divided image 6 constituting the page image 4 specified by the browsing request and the conversion information is transmitted to the display device 20 for each divided image 6. Thus, the transmission process shown in FIG. 11 is completed.

  Next, the operation of the display device 20 will be described in detail with reference to FIG.

  FIG. 12 is a flowchart showing an example of the flow of display processing executed by the CPU 41 when a browsing request specifying the content ID and page number of the content to be displayed on the display device 20 is transmitted from the display device 20 to the server 10. is there.

  The browsing program that defines the display processing is stored in advance in the ROM 42 of the display device 20, for example. The CPU 41 of the display device 20 reads the browsing program stored in the ROM 42 and executes display processing. Further, the browsing program realizes display processing by using the function of the browser 25. That is, the browsing program is a program that operates on the browser 25. When calling a function of the browser 25 from the browsing program, the browsing program calls an interface function prepared for each function to be used.

  In step S200, the CPU 41 determines whether or not the display message of the page image 4 corresponding to the page number of the content specified by the browsing request has been received for the number of divisions. The number of display messages received by the display device 20 is obtained from the number of divisions included in the display message received first after transmitting the browsing request.

  If the display message has not been received for the number of divisions, the process of step S200 is repeatedly executed to monitor the reception status of the display message. On the other hand, when the display message is received by the number of divisions, the CPU 41 stores the divided image 6 and the conversion information included in the received display message in association with each display message in the RAM 43, and proceeds to step S210. That is, the RAM 43 stores the respective divided images 6 constituting the page image 4 of the page specified by the browsing request and the conversion information.

  In step S210, the CPU 41 selects any one of the divided images 6 received in step S200.

  In step S <b> 220, the CPU 41 acquires conversion information associated with the divided image 6 selected in step S <b> 210 from the RAM 43.

  Since the divided image 6 received by the display device 20 is the divided image 6 after the conversion process is performed by the server 10, in step S230, the CPU 41 uses the conversion information acquired in step S220 to select the selected divided image. A divided image 6 before conversion is generated from the image 6.

  Specifically, when the acquired conversion information is conversion information including the content of the inverse conversion processing as illustrated in FIG. 9, the content of the conversion processing included in the conversion information is directly applied to the selected divided image 6. Thus, the divided image 6 before conversion is generated. In addition, when the acquired conversion information includes the content of the conversion process performed by the server 10 as illustrated in FIG. 10, the reverse conversion process for the content of the conversion process included in the conversion information is performed on the selected divided image 6. Thus, the divided image 6 before conversion is generated.

  FIG. 13 is a diagram illustrating an example of the divided image 6 before conversion generated from each divided image 6 using the conversion information. The divided images 6A, 6B, and 6C in FIG. 13 are the divided images 6A, 6B, and 6C divided from the page image 4 of the first page in FIG.

  A divided image 6A before conversion is generated by performing 180 ° rotation processing and left-right direction inversion processing on the divided image 6A of FIG. By performing a left 270 degree rotation process on the divided image 6B of FIG. 13, the divided image 6B before conversion is generated. The divided image 6C before the conversion is generated by performing the left 90 degree rotation process and the vertical reversal process on the divided image 6C of FIG.

  The rotation process and the inversion process are conversion processes provided in advance in the browser 25. When the CPU 41 converts the divided image 6 into the divided image 6 before conversion, the rotation process and the inversion process provided in advance in the browser 25 are performed. Utilizing this, step S230 is executed.

  Whether the acquired conversion information includes the content of the inverse conversion process or the content of the conversion process performed by the server 10 may be determined in advance in the information processing system 100. Moreover, you may include the identification information of the conversion process showing whether the content of the reverse conversion process is included or the content of the conversion process implemented in the server 10 is included in conversion information. When the identification information of the conversion process is included in the conversion information, the interpretation of the content of the conversion process in the conversion information may be changed for each conversion information. That is, for example, the content of the inverse conversion process is described in the conversion information associated with the divided image 6A, and the content of the conversion process performed by the server 10 is described in the conversion information associated with the divided image 6B. It may be.

  In this case, since there is no regularity in the information that is a clue for generating the divided image 6 before conversion, for example, even if an attempt is made to generate the divided image 6 before conversion from only the divided image 6, the conversion included in the conversion information It is difficult to correctly generate the divided image 6 before conversion as compared with the case where the contents are unified contents according to the same interpretation.

  In step S240, the CPU 41 displays the divided image 6 before conversion generated in step S230 on the browser 25.

  In step S250, the CPU 41 determines whether there is an unselected divided image 6 that has not been selected in step S210 among the divided images 6 received in step S200. If there is an unselected divided image 6, the process proceeds to step S210.

  In step S210, the CPU 41 selects an unselected divided image 6, and repeatedly executes the processes in steps S210 to S250 until all the received divided images 6 are selected. Thereby, the divided image 6 before the conversion with respect to each received divided image 6 is generated.

  When displaying the divided image 6 before conversion on the browser 25 in step S240, the CPU 41 displays each of the divided images 6 before conversion in a superimposed manner. As shown in FIG. 7, in the divided image 6 before conversion, when all the divided images 6 constituting the page image 4 are overlapped, the divided images 6 are restored so that the page image 4 before the division is restored. Is set to the transparent area. Therefore, as shown in FIG. 13, the page image 4 corresponding to the page number of the content requested to the server 10 by the browsing request is restored by simply superimposing each of the divided images 6 before conversion generated in step S230. Will be.

  Thus, the display process shown in FIG. 12 ends.

  Note that the CPU 41 may arrange a watermark image on the uppermost layer of the superimposed divided image 6 when displaying the page image 4 by superimposing the divided images 6 before conversion in step S240. A “watermark image” is an image in which a region other than the image portion is set as a transparent region. The content of the image portion in the watermark image may be anything, for example, the user name of the user who has requested the content from the server 10, the name of the right holder of the content, the identification name for identifying the display device 20 that has displayed the content, Alternatively, a warning message or the like for notifying secondary use of the page image 4 is used, such as “copying prohibited”.

  By arranging the watermark image, the content of the content is protected even when the page image 4 is photographed by a photographing device such as a camera or screen-captured as compared with the case where the watermark image is not displayed.

  Although the present invention has been described using the embodiment, the present invention is not limited to the scope described in the embodiment. Various changes or improvements can be added to the embodiments without departing from the gist of the present invention, and embodiments to which the changes or improvements are added are also included in the technical scope of the present invention. For example, the processing order may be changed without departing from the scope of the present invention.

  Further, in the present embodiment, as an example, a description has been given of a form in which the division processing and transmission processing in the server 10 and the display processing in the display device 20 are realized by software. However, FIG. 6, FIG. 11 and FIG. For example, processing equivalent to the flowchart may be implemented in an application specific integrated circuit (ASIC) and processed by hardware. In this case, the processing speed can be increased compared to the case where each processing is realized by software.

  In the above-described embodiment, the information processing program and the browsing program are installed in the ROM. However, the present invention is not limited to this. The information processing program and browsing program according to the present invention can be provided in a form recorded in a computer-readable storage medium. For example, the information processing program and the browsing program according to the present invention may be provided in a form recorded on an optical disc such as a CD (Compact Disc) -ROM or a DVD (Digital Versatile Disc) -ROM. Further, the information processing program and the browsing program according to the present invention may be provided in a form recorded in a semiconductor memory such as a USB memory and a flash memory. Further, the server 10 and the display device 20 may acquire the information processing program and the browsing program according to the present invention from an external device (not shown) connected to the communication line 2, respectively.

2 ... Communication line, 4 ... Page image, 4Z (4A, 4B, 4C) ... Partial page image, 6 (6A, 6B, 6C) ... Split image, 10 ... Content server ( Server), 11 ... content conversion unit, 12 ... image processing unit, 12A ... division unit, 12B ... conversion unit, 12C ... generation unit, 13 ... reception unit, 14 ... Transmission unit, 15 ... content storage unit, 16 ... content information DB, 17 ... display image information DB, 18 ... display image storage unit, 19 ... conversion information DB, 20 ... Display device, 21 ... transmission unit, 22 ... reception unit, 23 ... restoration unit, 24 ... display unit, 25 ... browser, 30 (40) ... computer, 31 (41) ... CPU, 32 (42) ... ROM, 33 (43) ... R M, 34 (44) ... nonvolatile memory, 37 (47) ... communication unit, 38 (48) ... input unit, 39 (49) ... display unit, 100 ... information processing system

Claims (17)

A dividing unit for dividing the image into a plurality of divided images;
For each of the divided images divided by the dividing unit, a conversion unit that converts the display form of the divided images;
For each of the divided images after conversion converted by the conversion unit, a generation unit that generates conversion information representing the conversion content performed by the conversion unit;
In response to the image viewing request, each of the converted divided images constituting the image, and a transmission unit that transmits the conversion information associated with each of the converted divided images;
An information processing apparatus comprising: The information processing apparatus according to claim 1, wherein the conversion unit performs at least one of a plurality of predetermined types of conversion processing that is performed by the image viewing request source on each of the divided images. . The information processing apparatus according to claim 2, wherein the conversion unit converts the display form of the divided images using a conversion process randomly selected from the plurality of types of conversion processes. The information processing apparatus according to claim 2, wherein the plurality of types of conversion processing are rotation processing and inversion processing of the divided images. The information processing apparatus according to claim 4, wherein the conversion unit randomly sets a rotation angle in the rotation processing of the divided image and an inversion direction in the inversion processing of the divided image, and converts the display form of the division image. The information processing apparatus according to claim 1, wherein the division unit divides the image so that the image is restored when the divided images are overlapped. The information according to claim 6, wherein the division unit divides the image into a grid and configures the divided images so that positions of the images divided into rectangles included in the divided images do not overlap each other. Processing equipment. The information processing apparatus according to claim 7, wherein an area of the divided image that does not include the image is set as a transparent area. The division unit divides the image so that the image is divided into a number of the divided images set according to a display time of the image requested by a browsing device that browses the image. The information processing apparatus according to any one of claims 5 to 8.   The information processing program for functioning a computer as each part of the information processing apparatus of any one of Claims 1-9. Each of the divided images of the image constituting the requested image, and a receiving unit that receives conversion information representing conversion processing performed on each of the divided images;
For each of the divided images received by the receiving unit, a divided image before conversion in which the conversion process is performed is generated from the content of the conversion information corresponding to the divided image, and each of the divided images before conversion is generated. A restoration unit for restoring the image from
A display unit for displaying the image restored by the restoration unit;
Browsing device with The browsing device according to claim 11, wherein the content of the conversion process included in the conversion information is limited to the conversion process performed by the restoration unit. The browsing device according to claim 12, wherein the conversion process performed by the restoration unit is at least one of a rotation process and an inversion process of the divided image. The browsing device according to any one of claims 11 to 13, wherein a transmission region is included in each of the divided images received by the reception unit. The browsing device according to claim 14, wherein the restoration unit restores the image by superimposing the generated divided images before conversion.   The browsing program for functioning a computer as each part of the browsing apparatus of any one of Claims 11-15. The information processing apparatus according to any one of claims 1 to 9,
The browsing device according to any one of claims 11 to 15,
Information processing system including