摘要:
The primary objective of the present invention is the prevention, or the detection, of an illegal act involving digital contents. To achieve this objective, whether an illegal procedure involving digital contents has been performed is determined based on results obtained by performing a predetermined operation for at least a part of the digital contents, and a predetermined process is performed for the digital contents in accordance with the results of determination.
摘要:
An encoding apparatus includes a first encoding unit adapted to encode inputted data, an interleaving unit adapted to interleave the inputted data, and a second encoding unit adapted to encode an output of the interleaving unit. The encoding apparatus executes a first encoding algorithm using the first encoding unit, and executes a second encoding algorithm using the first encoding unit, the interleaving unit and the second encoding unit. Furthermore, the encoding apparatus shares the first encoding unit when the encoding apparatus executes the first and second encoding algorithms in parallel.
摘要:
It is an object of this invention to reliably pad electronic water-mark information even in a moving image constituted by a plurality of frames whose contents hardly change and easily pad electronic water-mark information even in a general moving image obtained by photographing an object at one angle. In order to achieve this object, there is provided an electronic water-mark information padding scheme of padding electronic water-mark information in only intraframe-encoded data without padding any electronic water-mark information in interframe-encoded data.
摘要:
It is an object to provide a digital watermark embedding technique for integratedly managing a plurality of kinds of contents such as still images, motion images, audio sound, and the like. To accomplish this object, the invention has, for example, an input device for inputting a first kind of data line and a second kind of data line, and an embedding device for embedding digital watermark information which is concerned with each other to each of the first and second data lines.
摘要:
The primary objective of the present invention is the prevention, or the detection, of an illegal act involving digital contents. To achieve this objective, whether an illegal procedure involving digital contents has been performed is determined based on results obtained by performing a predetermined operation for at least a part of the digital contents, and a predetermined process is performed for the digital contents in accordance with the results of determination.
摘要:
The invention generates moving image information obtained by compositing a moving image of a user and objects selected by the user, and provides the generated moving image information to the user. For instance, when the user has inserted a coin or coins into a device, a select menu of pre-stored stories is displayed, and the user selects one story from the menu. Then, the user selects a desired background scene and feature player in that story to determine pre-stored objects. After that, an image of the user is sensed, and is stored as a moving image object. The moving image object is then composited with the previously selected objects according to MPEG 4 to generate single stream information. The generated moving image information is then delivered to the user.
摘要:
A method for image processing comprising inputting and reading a combined image that includes a latent image unperceivable by the human eye, a patterned image in the background allowing the latent image to appear clearly on a recording medium when data recorded on a recording medium is copied onto another recording medium, and text and/or image data embedded with a digital watermark. The text and/or image data is extracted from the combined image and the digital watermark extracted from the text and/or image data. A permission code enabling copying of image data composed of a combination of a patterned image and the extracted text and/or image data onto a recording medium is input. The copying is regulated based on the extracted digital watermark and the permission code.
摘要:
The present invention provides a technique that allows for a valid modification that is authorized by the author of data, while assuring the originality of the data. An information processing apparatus for processing original data created by a predetermined author is provided. The information processing apparatus includes a modification-information storing unit for storing modification information regarding a modification onto a storage medium when the original data is modified, and a modification-assuring-information creating unit for creating modification assuring information for assuring that the modification information is true.
摘要:
An image verification system has an image generation device and a first image verification device. The image generation device includes (a) an image data generation unit that generates image data, and (b) a first verification data generation unit that generates first verification data from the image data using a common key in common key cryptography. The first image verification device includes (a) a first verification unit that verifies, using the image data, the first verification data and the common key, whether the image data is altered, and (b) a second verification data generation unit that generates second verification data from the image data using a private key in public key cryptography without editing the image data, if the first verification unit verifies that the image data is not altered.
摘要:
A verification information generation system comprises a first and a second data processing apparatuses. The first data processing apparatus comprises a holding unit adapted to hold a first secret information which is set in advance, a reception unit adapted to receive information associated with the second secret information from the second data processing apparatus, a key information generation unit adapted to generate key information on the basis of the first secret information and the information associated with the second secret information, a key derivation auxiliary information generation unit adapted to generate key derivation auxiliary information which allows the key information to be derived from the second secret information, a verification information generation unit adapted to generate verification information on the basis of information to be verified and the key information, and an output unit adapted to output the information to be verified, the verification information, and the key derivation auxiliary information. The second secret information is information which is set in advance in the second data processing apparatus.