Sony Corporation

Other

Sony Electronics Inc

Sony Corporation of Japan

Sony Corporaiton

Hisato Shima

Harumi Kawamura

Makoto Sato

Takehiko Nakano

Tomoyuki Asano

Yoshitomo Osawa

Bruce Alan Fairman

Yoshio Osakabe

Ryuji Ishiguro

Scott D Smyers

David V James

Teruyoshi Komuro

Kevin K Lym

Kazuyuki Ogawa

Yuko Iijima

Teruhiko Kori

Katsumi Matsuno

Ichiro Kubota

Minobu Hayashi

Quan Vu

Takuya Nishimura

Atsushi Suzuki

Chenchu Lakshmi Chilamakuri

Naofumi Yanagihara

Naoki Nagano

Sho Kou

Hiroyuki Suzuki

Koichi Sugiyama

Glen David Stone

David S Hunter

Qi Benjamin Hu

Ratna Vemuri

Hajime Inoue

Hiroshi Yamazaki

Harold Aaron Ludtke

Ichiro Hamada

Yasuo Kusagaya

Jose L Diaz

Richard K Scheel

Hiroyuki Ishimaru

Tatsuya Igarashi

Takuro Noda

Hiroshi Okada

Keiji Kanota

Yukio Kubota

Masaki Oguro

Kazuhiko Takabayashi

Tomoko Tanaka

Akira Shimazu

Junichi Tsukamoto

Yukihiko Aoki

Noriko Kotabe

Andrew M Proehl

Larry J White

Xin Xue

Hideo Terasawa

Noboru Motoyoshi

Ichiro Okamoto

Yasushi Minoya

Kunitoshi Shimizu

Jon Ebbe Brelin

Yoshizumi Mano

Keiko Tamamizu

Brian Toru Yamanaka

Teroyoshi Komuro

Harumi Kawahura

Kazonubu Toguchi

Qi Hu

The invention provides an enciphering apparatus and method, a deciphering apparatus and method and an information processing apparatus and method by which illegal copying can be prevented with certainty. Data enciphered by a 1394 interface of a DVD player is transmitted to a personal computer and a magneto-optical disk apparatus through a 1394 bus. In the magneto-optical disk apparatus with which a change to a function is open to a user, the received data is deciphered by a 1394 interface. In contrast, in the personal computer with which a change to a function is open to a user, the enciphered data is deciphered using a time variable key by a 1394 interface, and a result of the decipherment is further deciphered using a session key by an application section.

Enciphering apparatus and method, deciphering apparatus and method as well as information processing apparatus and method

An electronic device that shares a secret key with another electronic device; receives a first response request transmitted from the another electronic device; generates a first response message based on the first response request and the secret key; receives a second response request transmitted from the another electronic device; and generates a second response message based on the second response request, the second response message transmitted to the another electronic device and including authentication data generated based on the secret key. The electronic device is authorized to receive data from the another electronic device when the authentication data matches expected authentication information generated by the another electronic device, and a predetermined time elapsed from a transmission of the second response request does not expire before the second response message is received by the another electronic device.

Information processing apparatus and method, recording medium and program

A measurement to obtain an RTT to a receiving apparatus is performed by a relay apparatus that is disposed between a WAN and a home network and connects these two networks. That an RTT value is equal to or less than the threshold value is set as a content distribution condition from a transmitting apparatus, so that the same use environment as a system using current DLNA and DTCP-IP can be realized for content use in the home network. Thereby, unjust distribution of content is prevented while an authentication and key exchange procedure performed via an external network is allowed.

Communication apparatus, communication method, communication system, and computer program

The CGMS unacceptable recorder accepts transmission frames only when the copyright protection information in a transmission header transmitted to the IEEE1394 serial bus indicates copy free. The CGMS acceptable recorder accepts transmission frames when the copyright protection information in the transmission header indicates copy free. When the copyright protection information in the transmission header indicates compliance with the copyright information contained in the content of the transmission frame, the copyright information in the content is fetched based on the signal format type information of the transmission header. As described herein above, a copy management information changeable apparatus such as a computer cannot accept data other than copy free signals from the digital interface.

Digital recording apparatus and copyright protection method thereof

Apparatus and methods are provided for moving electronic content between devices. In one implementation, an content-transmitting apparatus may include a transmitting unit configured to transmit content to a content-receiving apparatus. The content-transmitting apparatus may also include a determination unit configured to determine, in response to the transmission, whether first key information associated with the content-receiving apparatus corresponds to second key information associated with the content-transmitting apparatus. A receiving unit may be configured to receive a confirmation message from the content-receiving apparatus, and a confirmation unit may be configured to confirm whether the content is usable at the content-receiving apparatus, based on at least the confirmation message.

System, apparatus, method and computer program for transferring content

A content transmission device for transmitting content, whose copying is controlled, includes an authentication section for performing an authentication procedure between the content transmission device and a content receiving device, a first copy-control-information processing section for processing first copy control information describing copy control information concerning the content, a second copy-control-information processing section for processing second copy control information including content information different from the first copy control information, and a content transmission section for generating and transmitting, to the content receiving device, a packet including a header including the first copy control information and the second copy control information, and a payload obtained by encrypting the content with a predetermined content key.

Content transmission device, content transmission method, and computer program used therewith

An information processing apparatus for determining whether or not to transmit a predetermined content to a reception apparatus connected to a network, in accordance with a response time taken to respond to a predetermined command, including: reception means receiving a response to a command; measuring means measuring the response time to the command; authentication means authenticating the reception apparatus; generation means generating authentication data to be inserted into the command; transmission means transmitting the command including predetermined one of the authentication data; storage means storing the authentication data contained in the command and the response data contained in the response; request means requesting the reception apparatus for transmission of the authentication data and the response data; and determination means determining whether the authentication data and the response data transmitted from the reception apparatus, and determining transmission permission/inhibition of a content to the reception apparatus.

Information processing apparatus and method

An electronic device that generates first authentication data; outputs a first response request generated based on the first authentication data; receives a first response message based on the first response request command, the first response message including second authentication data based on the first authentication data; outputs a second response request command after receiving the first response message; counts a time elapsed from transmitting the second response request; receives a second response message based on the second response request command, the second response message including third authentication data generated at the second electronic device based on the first authentication data; compares the third authentication data included in the second response message with expected authentication data generated by the electronic device based on the first authentication data; and judges if the second electronic device is authorized to use content data based on the comparison result and the counted time.

An electronic device that shares a secret key between the electronic device and another electronic device; receives a first response request transmitted from the another electronic device; generates a first response message based on the first response request; receives a second response request transmitted from the another electronic device after the another electronic device receives the first response message; and generates a second response message based on the second response request, the second response message transmitted to the another electronic device. The electronic device is authorized to receive data from the another electronic when authentication is performed between the electronic device and the another electronic device, and a predetermined time elapsed from a transmission of the second response request does not expire before the second response message is received by the another electronic device.

The present invention relates to an information processing apparatus allowing proper communication with a communication partner in accordance with a communication time of the communication partner.

A system and method for controlling the transmission of contents among a plurality of audio/video (AV) devices by using a general purpose network In case of transmitting the contents held in a first device (source) to a second device (sink) by way of a designated transmission path, information relating to the transfer protocol for transmitting the contents is added to each content when the contents information held in the first device is disclosed to a controller on the network. Transmission management is performed based on the information on the transfer protocol added to each content when starting transmission of the contents between the first device and the second device.

Transmission method and transmitter

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Tokyo, Japan

Hisato Shima