Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Sony Corporation

Keyence Corporation

Panasonic Intellectual Property Management Co., Ltd.

Hiroki Murakami

Susumu Ibaraki

Noboru Katta

Seiji Nakamura

Katsumi Tokuda

Akio Higashi

Ryuichi Okamoto

Takashi Matsuo

Tohru Nakahara

Motoji Ohmori

Kouji Miura

Takaaki Namba

Toshihide Akiyama

Hiroshi Takeno

Satoshi Niwano

Naohisa Kitazato

Yoshiharu Dewa

Yasushi Uesaka

Akihiro Tanaka

Tetsuya Inoue

Yasushi Katayama

Tatsuya Shimoji

Mitsuhiro Inoue

Tohru Wakabayashi

Takatoshi Ono

Takeshi Kokado

Tsutomu Tanaka

Hideki Kagemoto

Takuji Hiramoto

Toshikazu Hattori

Masahiro Oho

Masanori Nakanishi

Koji Miura

Shigeru Yamada

Sen'ichi Onoda

Yukiyasu Fukami

Atsunori Sakurai

Toyoichi Uozumi

Yoji Kumazaki

Shinya Kemi

Toru Nakahara

There are provided a photoelectric sensor and a photoelectric sensor system in which received light quantities of a plurality of photoelectric sensors are displayed in an integrated manner, and slight variation in the received light quantity that has nothing to do with a detected condition of a workpiece is ignored and a photoelectric sensor with abnormity is easily found out. Upon acceptance of an instruction to execute scaled display by a control unit of a photoelectric sensor, a scaling adjustment ratio is calculated by assigning the received light quantity to a target value set to be greater than a display upper limit while executing the scaled display. A received light quantity that is subsequently obtained is scaled based on the calculated scaling adjustment ratio to obtain a received light quantity after the scaling.

Photoelectric sensor and photoelectric sensor system

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

A content distribution system distributes a content key and content use conditions for controlling a content use in a client apparatus to the client apparatus, via a communication channel, from either a multicast distribution server or a unicast distribution server. A content distribution management server determines by which distribution method to send the content key and content use conditions of each content according to an attribute of the content (a compression format, a compression ratio, a content holder, and the like). An encrypted content distribution server distributes only encrypted content whose content key and content use conditions are to be distributed by the unicast, and the multicast distribution server distributes encrypted content whose content key and content use conditions are superimposed by the multicast.

Content use management system, content use management method, and client device

In a content delivery system including a server and content processing apparatus connected to each other across a network, a content delivered by the system is encrypted with a content key Kc, and supplied along with a sublicense encrypted with a work key Kw to a DTV. The sublicense includes a second use condition under which a content is used and a content key Kc for decrypting an encrypted content. The work key Kw for decrypting an encrypted content is included in a main license. The main license is supplied to the DTV separately from the content. The main license includes, in addition to the work key Kw, a first use condition under which a content under a subscription contract is used.

Content distribution system and distribution method, and content processing device and processing method

To provide a content distribution system which can prevent use of content which has been temporarily stored after the valid period. A content distribution system () including a license server () which issues a license, a content server () which transmits the content, a terminal device () which controls use of the content based on the issued license. The terminal device () does not allow the use of the received encrypted content when it is judged that the encrypted content received from the content server () is not the content received in real time.

Terminal device, server device, and content distribution system

To reduce a frequency of recording communication management information for communication disconnection countermeasure. A digital content distribution system includes a license server () that issues a license, and a user terminal () that controls use of content based on the issued license. The license server () judges, according to the license to be issued, whether or not the communication management information for the communication disconnection countermeasure needs to be recorded, and notifies the user terminal of a result of the judgment. This enables the user terminal () to reduce the frequency of recording the communication management information.

Terminal apparatus, server apparatus, and digital content distribution system

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

The present invention provides a rights management terminal that can securely send and receive usage information while preventing spoofing and protecting user's privacy. The rights management terminal manages a copyright of a content using a license that includes a usage rule of the content, and includes: a first public key certificate management unit which manages, as a set, a first public key certificate that includes identification information for uniquely identifying at least one of the rights management terminal and a user using the terminal, and a first private key paired with a first public key included in the first public key certificate; a second public key certificate management unit which manages, as a set, a second public key certificate that does not include the identification information, and a second private key paired with a second public key included in the second public key certificate; a selection processing unit that selects, as a set, one of the following: the first public key certificate and the first private key; and the second public key certificate and the second private key; and an authentication processing unit that executes authentication for communicating with a server apparatus, using the public key and the private key that are selected as a set by the selection processing unit.

Rights management terminal, server apparatus and usage information collection system

An IC card (processing terminal) divides a process into process blocks, and holds a time period required for processing each process block. A receiver (receiving terminal) notifies the IC card of a time period which can be spent for processing non-real-time process data when causing the IC card to perform the processing. The IC card processes the process blocks which can be processed within the notified time period. After the processing, the IC card once sends a response back to the receiver, and then transitions into a state in which it can receive a new request. Accordingly, it becomes possible for the IC card to process real-time process data such as an ECM. In the case where the receiver continues the suspended processing, it notifies the IC card of the continuation of the processing so that it causes the IC card to continue the processing of non-real-time process data.

Processing terminal, receiving terminal and received data processing system

A key management apparatus which can be used to encrypt/decrypt content data in a content playback device includes a storing unit for storing a secret key, a key information decrypting unit for decrypting encrypted key information and an updating unit operable to update the secret key with an algorithm stored therein, when the decrypted key information is key-updating information. Seed information can be received for use with the algorithm to provide a new secret key, and preliminary trigger information can be used to poll a group of appliances to request key information to determine any duplication of appliances.

Content playback apparatus method and program and key management apparatus and system

A reception apparatus includes: a reception unit for receiving the scrambled content, the scrambled content being scrambled so that a predetermined unit of scrambled content is descrambled using a descrambling key corresponding to the predetermined unit of scrambled content, and at least one piece of storage information in which a list including all descrambling keys used for descrambling the scrambled content is embedded; storage unit for storing the received scrambled content and the storage information; list extraction unit for extracting the list from the stored storage information; descramble processing unit for extracting the predetermined unit of scrambled content from the stored scrambled content, extracting a descrambling key corresponding to the predetermined unit of scrambled content from the extracted list, and descrambling the extracted predetermined unit of scrambled content using the extracted descrambling key; and reproduction unit for reproducing the predetermined unit of descrambled content in the descrambled order.

Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list

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

A system interrelating a program to be broadcast with a CM stored on a networkis implemented. The CMs (second contents) stored on the networkare each assigned a URL, while the program (first content) to be broadcast is embedded with tag information, which is used to specify the URL of the CM to be interrelated with the program for reproduction and output. Based on the tag information embedded in the received program, a TV commerce terminalspecifies any one URL and then fetches the CM having the URL assigned.

Content providing system and terminal used therein

A transmitting system which comprises a transmission line, a transmitting apparatus connected to the transmission line, and a receiving apparatus connected to the transmission line, and transmits data between the transmitting apparatus and the receiving apparatus, wherein the transmitting apparatus comprises packet compressing means which receives input data comprising plural packets having identifiers as an input, identifies packets to be discarded and effective packets according to the identifiers, and outputs compression information indicating the number of continuously discarded packets and the effective packets to the transmission line, and the receiving apparatus comprises packet restoring means which receives the compression information and the effective packets which have been output from the transmitting apparatus, generates ineffective, packets which are as many as the discarded packets, and outputs the ineffective packets and the effective packets.

Transmitting system and transmitting apparatus

A scrambling apparatus has at least one of the following processing units: a signal inserting processor for inserting a dummy pattern indicating the quantization width in the compressed video data; a conversion processor for scrambling a signal specifying whether field or frame processing is used; a DCT coefficient conversion processor for scrambling a part of the code defining the DCT coefficient; an intra.sub.-- dc.sub.-- precision conversion processor for scrambling the intra.sub.-- dc.sub.-- precision signal; and an alternate.sub.-- scan conversion processor for scrambling the alternate .sub.-- scan signal. A descrambling apparatus reverses the conversion process on the video data scrambled by the scrambling apparatus to restore the video data to the original unscrambled state.

Scrambling apparatus and descrambling apparatus

Growing community of inventors

Suita, Japan

Hiroki Murakami