Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Intellectual Property Corporation of America

Tohru Nakahara

Kouji Miura

Masaya Yamamoto

Ryuichi Okamoto

Akio Higashi

Katsumi Tokuda

Hiroki Murakami

Takaaki Namba

Masaki Igarashi

Takashi Matsuo

Yasushi Uesaka

Mitsuhiro Inoue

Masanori Nakanishi

Masayuki Kozuka

Natsume Matsuzaki

Kaoru Yokota

Masao Nonaka

Akihiro Tanaka

Masaya Miyazaki

Tohru Wakabayashi

Takuji Hiramoto

Koji Miura

Atsunori Sakurai

Shinya Kemi

Sen'ichi Onoda

When a secure counter malfunction detection unitdeters a malfunction in a secure counter, a content playability judgment unitperforms a content playability judgment based on information managed by a malfunctioning-state playback processing management unit. The malfunctioning-state playback processing management unitstores a malfunctioning-state playback condition composed of information such as a playback count and a playback time. The content playability judgment unitjudges that content is playable when the malfunctioning-state playback condition is met, and a content playback unitsplays the content.

Content reproducing device and content reproducing method

A terminal apparatus is provided which guarantees operation of a use condition bytecode while securing a degree of freedom for a service provider generating the use condition bytecode. A terminal apparatus (), in which a license () includes a use condition determining logic code () and a version number (), includes a license obtainment unit () obtaining the license (), a use condition verification unit () determining, based on the version number (), whether or not an operation of the use condition determining logic code () has been confirmed, a use condition bytecode execution unit () executing the use condition determining logic code () when the operation of the use condition determining logic code () has been determined to have been confirmed, and a content playback unit () playing back content based on the use condition determining logic code ().

Terminal apparatus and system thereof

Content reproducing device and content preproducing method

An image processing apparatus enables image data to be handled easily after photography. A server apparatus patterns images and controls information in correspondence with user identifiers. A digital camera photographs a subject, obtains a pattern image and a piece of control information from the server apparatus, and judges whether a portion of the image data obtained by photography matches the obtained pattern image. If a matching portion exists, then the digital camera operates in accordance with an operation instruction included in the piece of control information. If the operation instruction is mosaic processing, then the digital camera performs mosaic processing to the matching portion. If the operation instruction is image replacement, then the digital camera replaces the matching portion with a predetermined image or performs CG processing on the matching portion. If the operation instruction is frame deletion, then the digital camera deletes the image data.

Image processing apparatus

A contents using device (or a terminal device)is composed of: a license processing unitwhich judges, on the basis of a usage rule of a license, whether or not the content is available; a content reproduction unitwhich uses the content judged by the terminal deviceto be available; a restriction unit (or a content reproduction unit) which restricts the license corresponding to the contents from being used by another source by reason that the license is currently in use, for a time period between a start and a normal end of the content usage by the content reproduction unit; an event detection unitwhich detects a predetermined event that occurs between the start and the normal end of the content usage and that forcefully aborts the content usage; a restriction-relaxation necessity judgment unit (or a recovery/penalty judgment unit)which judges whether or not the predetermined event is against an intention of a user; and a restriction relaxation unit (or a license recovery unit)which relaxes the restriction on the content usage when the recovery/penalty judgment unitjudges that the predetermined event is against the intention of the user.

Contents using device, and contents using method

A content playback apparatus reduces load concentration on a specific server apparatus that manages content keys of encrypted content, while protecting copyrights of the content. The content apparatus makes playback of content recorded in a recording medium sold possible after the specific server breaks down. A key acquisition control unit () reads a playback control information table () from a recording medium () via a reading unit (). The key acquisition unit () acquires a rights key via a key acquisition intermediation unit () from an apparatus specified by an acquisition-destination type and a request-destination type that are stored in the playback control information table () and that corresponding to the content to be played. The key acquisition unit () generates a content key using the acquired rights key and, when required, a medium key recorded in a medium. A decryption unit () decrypts encrypted content using the content key.

Content playback apparatus, content playback method, computer program, key relay apparatus, and recording medium

A content usage device includes (i) a license management unit that holds license information and (ii) a content output unit that uses a content in compliance with license information and outputs the content in at least one manner of a sound, video and data. The license management unit, upon receiving a request of license information from the content output unit, requests a license management unit of another content usage device to transfer the license information and acquires the license information, and passes the acquired license information to the content output unit. The content output unit uses a content in compliance with the license information passed from the license management unit.

Content usage device and network system, and license information acquisition method

Each of at least two terminal apparatuses uses content data in accordance with license information which is generated by a content distribution system to which it subscribes. A conversion apparatus includes a working area for storing license information which is compatible with one of the terminal apparatuses, and a central processing section for converting the license information stored in the working area into license information which is compatible with the other terminal apparatus. Thus, there is provided a conversion apparatus which can convert one's own license information so as to be passable to others.

License information conversion apparatus

A content distribution management system includes a plurality of content distributing devices, which each include a content storage processing unit operable to store and distribute a content, a user interface unit operable to provide viewing and information of a content for a user, a content acquisition processing unit operable to acquire a content from a content providing device, etc. and to perform purchase processing of the content, and a sending/receiving unit operable to exchange data via a communication network. The content distribution management system also includes a content distribution management device, which includes a payment management processing unit operable to perform payment processing of a content, and a copyright management processing unit operable to manage and send copyright-related information (a usage rule, key information, etc.). The content distributing devices and the content distribution management system are configured via the communication network, etc.

Content distribution management system and content distribution management method

A group management server in a group information management system includes: a group member terminal list storage unit for storing a group member terminal list; and a secure communication unit for establishing a secure communication channel with a plurality of terminal apparatuses and communicating with each of the terminal apparatuses via the communication channel. Each terminal apparatus includes a tamper-resistant module. The tamper-resistant module includes: a group information storage unit for storing group information securely; a deletion unit for securely executing deletion, which is processing that affects the group member terminal list, of the group information stored in the group information storage unit; and a secure communication unit for establishing a secure communication channel with the secure communication unit and transmitting a complete deletion notification message via the communication channel.

Information management system having a common management server for establishing secure communication among groups formed out of a plurality of terminals

A management device of a license management system acquires a usage request of a content from an SD card or a printer via a relay device, analyzes the acquired usage request, acquires usage environment information of the SD card or the printer from the relay device, analyzes the acquired usage environment information, generates license information including a usage rule corresponding to the analysis results of the usage request and the usage environment information, generates instruction information indicating how to handle the license information in the relay device based on the analysis result of the usage environment information, embeds the generated instruction information in the license information, and sends the license information to the relay device. The relay device receives the license information in which the instruction information is embedded, and transfers the received license information to the SD card or the printer according to the instruction information which is embedded in the license information with performing certain processing or without performing any processing to the license information.

License management system, license management device, relay device and terminal device

Transmitting data sent from A first device includes random information, which is encrypted by using common information, and a checksum, and the transmitting data is sent to a second device. The second device receives the transmitting data, and sends back answering data that includes an answer message, which is encrypted by using the random information, and checksum, to the first device.

Growing community of inventors

Osaka, Japan

Tohru Nakahara