Sharp Kabushiki Kaisha Corporation

Katsuhiko Sato

Kazuyuki Nako

Hideaki Tanaka

Yuji Sawada

Keisuke Iwasaki

Yoshihiro Kitamura

Masafumi Yamanoue

Masashi Hirosawa

Mitsunobu Shimada

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

Featured are an image processing apparatus, method and a medium including an image processing program. The image processing apparatus includes an image inputting means for inputting an image, a character/line drawing region extracting means for extracting a character/line drawing region from the input image, a pseudo-density region extracting means for extracting a pseudo-density region from the input image, an image contracting means for contracting images in an extracted pseudo-density region, an extracted character/line drawing region, and a region other than the pseudo-density region and the character/line drawing region, by mutually different methods, and an image outputting means for outputting the contracted image. The image contracting means performs a smoothing process in the pseudo-density region, performs an averaging process and a subsequent edge enhancing process in the character/line drawing region, and performs an averaging process in a region other than the pseudo-density region and the character/line drawing region.

Image processing apparatus, image processing method, and medium on which image processing program is recorded

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

Featured are an image processing apparatus, method and a medium including an image processing program. The image processing apparatus includes an image inputting means for inputting front and back images of an original, an image reversing means for reversing one of the front and back images, a position relationship detection means, image correcting means and image outputting means for outputting the image. The positional relationship detecting means detects the positional relationship between the front image reversed by the image reversing means and the back image from the image inputting means or the positional relationship between the back image reversed by the image reversing means and the front image from the image inputting means. The image correcting means corrects the image to eliminate a ghost image of the image using the positional relationship between the front and back images obtained from the positional relationship detecting means.

The image input part () in an authoring device () reads a plurality of pages of a paper publication and creates images of the pages. In the border eliminating part () of the authoring device (), a common area extraction part () extracts the area common to all of the images of the pages. The layouts with respect to at least either text or drawings in this common area of the images resemble one another. The non common-area replacement part () replaces the color of the portion outside the common area of the images with the background color of the common area, so as to remove the border outside the common area of each of the images. An image output part () in the authoring device () outputs the data of the post-replacement images of all of the pages of the paper publication as the contents of an electronic publication.

Border eliminating device, border eliminating method, and authoring device

In order to the monochromatic conversion of an image, in an image processing apparatus (), the color used within the image inputted from an image inputting section () is determined by a color analyzing section (), the mixing-ratio of the color components of the image is defined based on the color by a mixing-ratio calculating section (), the color components are mixed according to the mixing-ratio by an image converting section () thereby converting the input image to a monochromatic image, and it is outputted from an image outputting section (). Further, in order to contract an composite image comprising a character, a line drawing, and a halftone dot, an image processing apparatus () comprises an image inputting section (), a character/line drawing region extracting section () for an input image, a pseudo-density region extracting section () for the input image, an image contracting section () for contracting the image using different methods respectively in the pseudo-density region, the character/line drawing region, and the other region, and an image outputting section () for outputting the image. Furthermore, in order to eliminate a ghost image, in an image processing apparatus (), front and back images are inputted from an image inputting section (), an image reversing section () reverses it, a positional relationship detecting section () detects the positional relationship, an image correcting section () corrects the image as to eliminate a ghost image, an image reversing section () reverses it again, and an image outputting section (). Further, in order to align the image position, in an image processing apparatus (), the alignment of the images of the consecutive pages from among the images inputted page by page from the image inputting section () is carried out by a page contour detecting section (), a page contents region extracting section (), an inclination correcting section (), and page information processing section (), and it is outputted from the image outputting section ().

Image processor, image processing method, and medium on which image processing program is recorded

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.

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Nara, Japan

Katsuhiko Sato