Sony Corporation

Daiichi Sankyo Company, Limited

Sony Pictures Entertainment, Inc.

Sony Dadc Austria Ag

Sony Dadc Corporation

Panasonic Corporation

Sony Disc & Digital Solutions Inc.

Sont Corporation

Sony Group Corporation

Kenjiro Ueda

Tateo Oishi

Yoshikazu Takashima

Katsumi Muramatsu

Yoshiyuki Kobayashi

Motoki Kato

Kazuo Yamamoto

Hiroshi Kuno

Takamichi Hayashi

Munetake Ebihara

Jun Yonemitsu

Koji Yoshimura

Kouichi Uchimura

Shinichi Fujita

Yoshitomo Osawa

Shinobu Hattori

Tomoyuki Asano

Hideki Kobayashi

Ryohei Takahashi

Masahiro Konishi

Takeshi Honda

Masanobu Nakamura

Satoshi Kitani

Akihiro Furukawa

Andreas Winter

Klaus Holzapfel

Yumi Matsui

Markus Spitzlinger

Yukari Onishi

Takehiro Fukuzaki

Tetsuyoshi Matsufuji

Hiroshi Yahata

Masaya Yamamoto

Kaoru Murase

Toshiya Hamada

Hiroshi Morita

Kazuaki Toba

Masanari Yamamoto

Mitsuru Tanabe

Kouichi Kasai

Kentaro Hatanaka

Takashi Matsubara

Ryusuke Nishida

Shinichiro Torii

Hidehito Suzuki

Tetuyoshi Matsufuji

A configuration is implemented that converts MMT format data to MPEG-2 TSV format data for recording onto medium, thereby permitting copy control in compliance with the initial copy control information. MMT format data with copy control information set therein is input and converted to MPEG-2 TS format data for re-cording onto information recording medium. The copy control information recorded in the service description table (MH-SDT) stipulated by the MMT format is acquired and, in accordance with predetermined conversion rules, used to generate the copy control information for recording to the program map table (PMT) stipulated by the MPEG-2 TS. For example, the EPN and CCI values to be recorded to the PMT are determined in accordance with the conversion rules.

Information processing apparatus, information recording medium, and information processing method

A configuration capable of recording MMT format data on a medium as BDAV format data and performing copy control according to the original copy control information is achieved. The MMT format data, for which copy control information is set, is input and recorded on an information recording medium as BDAV format data. As record data, (a) a stream file including a packet string in which the MMT format data is stored, and (b) copy control information corresponding to the stream file, in which the copy control information corresponding to the MMT format data is reflected, are generated and recorded as an additional header of a packet included in the stream file or as another file.

Information processing apparatus, information recording medium and information processing method

A configuration is realized that allows reproduction control on the basis of age at the time of reproduction by recording information regarding age permitted for reproduction corresponding to media recorded content. A clip AV stream file storing content to be reproduced acquired from input data including MPEG-2 TS format data or MMT format data and information regarding age permitted for reproduction corresponding to content acquired from the input data are placed into a playlist file, a clip information file, a usage control information file, or other file and recorded in media. A reproduction apparatus reads the information regarding age permitted for reproduction corresponding to the content to be reproduced from the playlist file or other file and compares the information regarding age permitted for reproduction with user's age information, thus allowing for content reproduction to be controlled.

Information processing apparatus, information recording medium, information processing method, and program

An optical axis or a diameter of light of even a light beam having a non-uniform intensity distribution is stably obtained. An outer shape of a range of a light intensity having a specified ratio with respect to a total light intensity on a cross-section of a light beam is obtained. An approximate circle is obtained from this outer shape. For example, the approximate circle is calculated by using the least-squares method. An optical axis and/or a diameter of light of the light beam is obtained on the basis of this approximate circle.

Photodetection method and photodetection apparatus

A configuration in which usage control that is substantially similar to content usage control in a copy source medium can be performed in a content copy destination is implemented. A data processing unit that performs a copy process of recording data recorded on a first medium on a second medium records encrypted content in the first medium on the second medium, without decrypting the encrypted content. In addition, the data processing unit converts a CPS unit key file recorded on the first medium to generate a converted CPS unit key file and records the converted CPS unit key file on the second medium. Further, the data processing unit acquires an MKB not requiring KCD, which is capable of directly calculating a media key using only a device key, without using key conversion data (KCD) recorded on the first medium, from a server and records the MKB not requiring KCD on the second medium.

Information processing device and information processing method

A configuration capable of performing reliable source analysis of illegal copy content using content in which a reproduction path is settable is implemented. Content in which an individual segment region including a plurality of pieces of variation data which include different identification information embedded therein and are decryptable using different keys and a common segment region including single data are provided, and variation data is configured with an aligned unit is set. A content reproducing device calculates a reproduction path by applying a device key and selects and reproduces an aligned unit corresponding to the reproduction path on the basis of a variation data identifier recorded in an adaptation field in a plain text region at the head of a plurality of aligned units constituting the variation data.

Information processing device, information recording medium, and information processing method

An information processing device includes: a data processing unit that executes a process of reproducing content recorded in a medium; and a memory storing a content revocation list in which an identifier (ID) of revoked content is recorded, wherein the data processing unit compares a minimum allowable version of a content revocation list recorded in a token which is management data corresponding to content recorded in the medium with a version of a content revocation list acquired from the memory, and when the version of the content revocation list acquired from the memory is an old version lower than the minimum allowable version of the content revocation list recorded in the token, the data processing unit halts determination on revocation of content based on the content revocation list acquired from the memory and reproduction of content.

Provided is an information processing device including a data processing unit that executes reproduction processing of content recorded in an information recording medium. The content includes an individual segment region formed of a plurality of variation data in which identification information different from each other is embedded and each of which can be decrypted by a different key, and a common segment region formed of single data. The variation data is formed of a 6144 byte aligned unit. The data processing unit calculates a reproduction path by applying a device key held in a memory, and selects an aligned unit corresponding to one variation data that corresponds to the calculated reproduction path from a plurality of aligned units configuring the plurality of variation data in the individual segment region included in the data read from the information recording medium, and then, executes the decryption and reproduction processing.

Information processing device, information recording medium, information processing method, and program

An information processing device including: a data processing unit that generates an encryption key of content; and a communication unit that transmits an encryption key generated by the data processing unit, wherein the data processing unit generates, as the encryption key, individual keys that are different for each new content recording processing on a recording medium in a content recording device, and transmits the individual keys through the communication unit.

Information processing device, information processing method, and program

Disclosed is a structure that includes: an information processing apparatus that stores content into an information storage device such as a memory card including an access allowed block based on an access right check made on each block, and uses the content; a content usage managing server that provides content usage permission information to the information processing apparatus; and a content correspondence information providing server that provides the encryption key to be used in decrypting the encrypted content stored in the information storage device. The content usage managing server determines the block for storing the encryption key and notifies the content correspondence information providing server of a block identifier that is the identifier of the determined block, and the content correspondence information providing server performs a process to write the encryption key into the block corresponding to the received block identifier.

Information processing apparatus, information processing system, information processing method, and program

Provided is an information processing device including: a data processing unit that performs a content playback process; and a communication unit that communicates with a server, wherein the content is content that has a segment region configured with a plurality of pieces of variation data which can be respectively decrypted by different keys, and for which a plurality of playback paths can be configured according to variation data which is selected as a playback object, wherein each piece of variation data is data for which a variation data identifier can be analyzed from decrypted data, and wherein the data processing unit receives playback path information which is allowed to be played from the server through the communication unit, and selects variation data from the segment region so as to perform content playback, according to the playback path information received from the server.

Provided is an information processing device including: a data processing unit that performs format conversion of converting MPEG-2 TS format data into MP4 format data, wherein the MPEG-2 TS format data is data that includes each segment region having a plurality of pieces of variation data decryptable with different keys, and wherein the data processing unit selects encrypted MP4 variation data from the segment region of the MPEG-2 TS format data and stores the MP4 variation data as MP4 format structure data in an MP4 file, while the encrypted variation data remains, without performing a decryption process and a re-encryption process for the selected MP4 variation data.

An information processing device includes: a data processing unit that executes a process of reproducing content recorded in a medium, wherein the data processing unit acquires a token from the medium, the token being management data corresponding to content recorded in the medium, compares a server ID recorded in the acquired token with a server ID recorded in a server certificate acquired from a server from which the management data is acquired, and halts reproduction of content when the two server IDs are not identical.

An information processing apparatus includes: a data processing unit which performs copy processing for recording recorded data of a first medium in a second medium, wherein the data processing unit receives playlist sequence information which represents the use sequence of a playlist applied to reproduction processing of copy data recorded in the second medium, from a management server and performs processing for generating an attribute file which stores the playlist sequence information and recording the generated attribute file in the second medium.

A configuration for achieving efficient content verification processing based on hash values is provided. Hash values of hash units set as segmented data of a content stored on an information storage medium are recorded in a content hash table and are stored on the information storage medium together with the content. An information processing apparatus for executing content playback executes hash-value comparison processing based on one or more randomly selected hash values. Regardless of the data amount of content, the configuration can perform hash-value determination and comparison processing based on hash units having a small amount of data, so that user equipment for executing content playback can perform efficient content verification.

Information processing apparatus, information storage medium, content management system, data processing method, and computer program

Growing community of inventors

Kanagawa, Japan

Kenjiro Ueda