Sharp Kabushiki Kaisha Corporation

Yuji Sawada

Yoshihiro Kitamura

Keisuke Iwasaki

Hisashi Saiga

Masafumi Yamanoue

Katsuhiko Sato

Yasuhisa Nakamura

Kazuyuki Nako

Masashi Hirosawa

Mitsuaki Nakamura

A display apparatus () that appropriately displays a dynamic layout type electronic document having a handwritten memo additionally input to a main body even in different environments includes: a display unit () also serving as a handwritten data input unit (); a layout calculating unit () calculating a layout of the dynamic layout type electronic document and giving a display on the display unit (); a user writing processing unit () causing handwritten data of a user input through handwritten data input unit () to be displayed overlapping the electronic document that is being displayed; and a user data input/output unit () storing user data used for displaying the handwritten data in a user data storing unit () in relation to the electronic document. The user data includes shape data of the handwritten data, write area information specifying an area in the electronic document where the handwritten data was written, and layout information at the time of writing specifying the display layout of the electronic document when the handwritten data was formed.

Method and apparatus for displaying electronic document including handwritten data

Data to be encrypted () is partially extracted successively. A result of encrypting a previously extracted portion of the data is used to successively calculate that of encrypting the currently extracted portion of the data successively. Successively calculated results of the encryption are used to generate encrypted data (). In generating the encrypted data, a finally calculated result of the encryption (PF(z+1)) is attached to the generated encrypted data. The finally calculated result is used as falsification detecting data () for detecting whether the data to be encrypted is falsified data.

Apparatus and method of generating falsification detecting data of encrypted data in the course of process

A data distribution system includes a plurality of data sources each capable of transmitting a data item, and a data vending machine capable of receiving the data item from the plurality of data sources and selling the received data item to a user. The data vending machine includes a data selecting apparatus operated by a user to select a desired data item, a data source selecting apparatus connected to the data selecting apparatus for selecting, among the plurality of data sources, one that holds the data item selected by the data selecting apparatus, in accordance with a specific standard, a data receiving apparatus connected to the data source selecting apparatus for receiving selected data item from the data source selected by the data source selecting apparatus, and a data updating apparatus to which an external storage device is detachably mounted, for writing the data item received by the data receiving apparatus to the external storage device.

Data distribution system and data selling apparatus therefor, data retrieving apparatus, duplicated data detecting system, and data reproduction apparatus

An electronic book display control device capable of solving the problem of a conventional page turning method of an electronic book device that pages are turned in accordance with a value predetermined by a speed controller and hence it is difficult to turn pages flexibly in accordance with the contents of the book and the characteristics of the user. The control device is provided with a CPU () which controls the whole device, an image data storage unit () in which the contents of the book are stored as image data, an image data control unit () which receives the image data and performs the required control, a display preparation image data memory unit () in which image data of the page being displayed and the page to be displayed next are stored, and a display unit () on which information concerning the image data and information concerning the operation of the electronic book are displayed. The data displayed on the display unit at a specific time in a page turning period are stored in a page turning data memory unit () and the column information of the page turning data is stored in a column information storage table (). In accordance with the column information, the address of the display preparation image data memory unit () and the image data on the page being displayed and the page to be displayed next are selected by a display changeover control unit ().

Display control device and reproduction display device for electronic books

Reproduction means of a general-purpose computer () reproduces a digital content only when a device ID included in the digital content corresponds to a device ID of a device by which it is intended to reproduce the digital content. When the device ID of the general-purpose computer () is altered, a recovery program for recovering an original device ID is downloaded from a recovery program generation server (), thereby the device ID is recovered. With this arrangement, it is possible to provide a communication system which is capable of recovering a device ID when, for instance, the device ID is altered on account of the reinstall of a program such as an OS or content player.

Communication system, terminal device, reproduction program, storage medium storing the reproduction program, server machine, server program, and storage medium storing the server program

An electronic copyrighted work distribution management system includes an electronic copyrighted work sales apparatus selling an electronic copyrighted work, a copyright management apparatus administering a copyright royalty of an electronic copyrighted work sold by the electronic copyrighted work sales apparatus, a seller terminal used by a seller, and a copyright terminal used by a copyright holder. The electronic copyrighted work sales apparatus calculates and transmits to the copyright management apparatus the copyright royalty of a selected electronic copyrighted work. The copyright management apparatus stores the received copyright royalty data for each copyright holder. Since the copyright management apparatus receives and stores for each copyright holder the copyright royalty data transmitted from the electronic copyrighted work sales apparatus, the copyright royalty can be administered.

Copyright management apparatus

A data processing device enabling stable data processing reads digital data including object data, an identifier indicating a type of the object data, and an attached program associated with at least one identifier for performing a predetermined process for object data associated with the identifier, to process the object data. The data processing device includes a program storing unit for recording an internal program including a processing module associated with the at least one identifier, an input unit for reading the digital data, and an external program executing unit for processing the object data by one of the attached program and the processing module when the attached program associated with the identifier of the read object data is present in the digital data.

Data processing device and method of processing data

An electronic book display control device capable of solving the problem of a conventional page turning method of an electronic book device that pages are turned in accordance with a value predetermined by a speed controller and hence it is difficult to turn pages flexibly in accordance with the contents of the book and the characteristics of the user. The control device is provided with a CPU ( ) which controls the whole device, an image data storage unit ( ) in which the contents of the book are stored as image data, an image data control unit ( ) which receives the image data and performs the required control, a display preparation image data memory unit ( ) in which image data of the page being displayed and the page to be displayed next are stored, and a display unit ( ) on which information concerning the image data and information concerning the operation of the electronic book are displayed. The data displayed on the display unit at a specific time in a page turning period are stored in a page turning data memory unit ( ) and the column information of the page turning data is stored in a column information storage table ( ). In accordance with the column information, the address of the display preparation image data memory unit ( ) and the image data on the page being displayed and the page to be displayed next are selected by a display changeover control unit ( ).

It is possible to clearly extract objects such as characters and line figures by eliminating the effect of shading from an input image containing self-shaded objects and/or vaguely contoured objects together with distinctly contoured object and thereby to extract all objects clearly and completely. A sample point setting portion sets sample points, a sample point shade calculating portion determines an optical density of shading at each sample point according to an optical density distribution of pixels in a reference block including the sample point at the center thereof. A shade calculating portion determines shade densities at the other points than the sample points and generates shade image, a shade removing portion generates a shade-removed image by removing the shading effect from the input image by using the shade image. A quantizing portion binarizes the shade-removed image and an image output portion outputs the obtained binary image.

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Osaka, Japan

Yuji Sawada