Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Sony Corporation

Tatsuya Shimoji

Masahiro Oashi

Kazuo Okamura

Junichi Hirai

Yuki Kusumi

Naoya Takao

Yoshihiro Mimura

Masayuki Kozuka

Takashi Kakiuchi

Yoshiyuki Miyabe

Ikuo Minakata

Toshiya Mori

Shinji Inoue

Hiroyuki Waki

Naohisa Kitazato

Yoshiharu Dewa

Yoshinori Matsui

Yasuyuki Sonoda

Keisei Yamamuro

Yasushi Katayama

Hideki Kagemoto

Kiyokazu Yamanaka

Shigeaki Watanabe

Hiroki Nakamura

Kazutoshi Sumiya

Akira Ishikawa

Hiroki Murakami

Katsumi Tokuda

Mitsuko Fujita

Satoru Hayama

Shusuke Haruna

Hidekazu Shimizu

Yasunori Tanaka

Chikara Yoshida

Yasushi Nishimura

Yoshiharu c/o Sony Corporation Dewa

Naohisa c/o Sony Corporation Kitazato

The present invention provided a content delivery system that can deliver content by way of the Internet. In the system, a browser requests a content server to deliver a startup file. The content server transmits the startup file to the browser. The startup file describes that the content is to be delivered by streaming or that it is to be delivered by downloaded files. A content reproducing section determines if the content is that to be delivered by streaming or that to be delivered by downloaded files according to the description of the startup file it receives from the browser. A television receiving set may be used as content processing apparatus for receiving the delivery of the content from a content delivery apparatus of such a system.

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

When a program transmission apparatus divides a program into a plurality of partial programs before transmission, a program reception execution apparatus executes a partial program when the partial program has already been received, and, when the execution needs to proceed to from a present partial program to a next partial program, executes the other partial program when the next partial program has been received.

Program reception/execution apparatus that can commence execution of a machine program having only received the program in part, and a program transmission apparatus that enables such execution

There are provided a content distribution system and a license management method for performing, in a collective manner, license management of a plurality of resources contained in contents. Each piece of content contains one upper-level resource (which is first referred to within the content), at least one lower-level resource (which can be referred directly or indirectly from the upper-level resource), one startup document and a license-corresponding document (which is an information file for performing, in a collective manner, license management of the resources contained in the content). The startup document contains at least upper-level resource reference destination information and at least one piece of license information for identifying view licenses required for viewing the resources contained in the content. In each resource, if link information for accessing other content is described, information for accessing the startup document of the other content is described.

Content distribution system and content license management method

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

The present invention relate to a digital broadcast system, and it is an object of the invention to record contents quickly in a broadcast system which implements interactivity by transmitting a set of data repeatedly, wherein a digital broadcast receiver separates a table corresponding to video images from streams in an arbitrary order and repeats the processing of memorizing the video image data to be identified in the order of obtaining the same by means of the table corresponding to the video images until all of the set of video images have been memorized. This allows for performing, in a short time, storage process of video image data broadcast for the purpose of efficient reproduction by a receiver having no storage function. Additionally, the data is available to viewers at any time after the completion of storage thereof.

Digital broadcast system

An object is to perform retrial processing according to the allowable volume on communication lines made available at response information receiving equipment. A broadcast unit, when broadcasting video and audio, includes retrial information in that broadcast, according to the allowable volume on the communication lines between the television receivers and the response information receiving equipment. Television receivers effect display based on the received digital data. Response information input by users is sent to the response information receiving equipment. The television receivers make retrial transmissions based on the received retrial information when communications could not be established with the response information receiving equipment. This retrial information is responsive to the allowable volume on the communication lines between the television receivers and the response information receiving equipment, wherefore retrial transmissions are made according to the allowable volume on the communication lines.

Data transceiving system and method therefor

A digital broadcast system includes a receiving device, one or more communication devices, and a broadcast station device. The receiving device includes a receiver for receiving a digitally broadcast program; a presentor for presenting the program received by the receiver to a viewer; and means for sending program ID information that specifies either the presented program or a program related to the presented program. Each of the communication devices receives the sent program ID information and sends communication device ID information to the broadcast station device together with the received program ID information. The broadcast station device receives the program ID information and the device ID information, and sends viewer targeted program specific service information to each of the communication devices identified by the received device ID information.

Digital broadcast system and its component devices that provide services in accordance with a broadcast watched by viewers

A data transmission apparatus has a multiplexing unit that cyclically multiplexes presentation information and navigation information stored in a transmission data storage unit according to control by a multiplexing control unit and a transmission unit that transmits the multiplexed stream. The reception control unit of a data reception apparatus sets filter conditions in a filter condition storage unit of a TS decoder unit in accordance with user operation indications. The presentation information and navigation information separated by the TS decoder unit are outputted via a reproduction unit to a display unit and an audio output unit.

Digital broadcasting system, digital broadcasting apparatus, and receiver apparatus for digital broadcasts

The present invention provides a system capable of individually controlling each of receiving devices while making full use of the advantages of broadcasting. Simultaneous transmission is carried out from a broadcasting deviceto a plurality of receiving devicesvia a broadcasting path. Further, the broadcasting devicesends operation control data to the receiving devicethrough a communication path. The receiving devicechanges its operation in accordance with the operation control data when received broadcasting is decoded. In this way, each of the receiver devicescan be controlled individually using the operation control data while making full use of the advantages of broadcasting.

Electronic mail system

Method and system for receiving and recording digital broadcast programs

A broadcasting system which includes a broadcasting apparatus and a reception apparatus and which achieves interactiveness using a broadcast wave. The broadcasting apparatus includes a content storing unit for storing the plurality of contents, each content including a set of video data and a set of control information that indicates another content that is a link destination for a present content, and a transmitting unit for multiplexing a set of video data and a plurality of sets of the same control information included in a same content as the set of video data, and for transmitting the multiplexed sets of video data and control information. The reception apparatus includes an extracting unit for extracting a set of video data and a set of control information in a same content as the set of video data, a storing unit for storing the extracted set of control information, a reproducing unit for reproducing the extracted set of video data and outputting an image signal, an operation unit for receiving a user operation that indicates a content switching, and a control unit for controlling the extracting unit to extract another content indicated by the set of control information stored in the storing unit, in accordance with the user operation.

Digital broadcasting system, digital broadcasting apparatus, and a reception apparatus for digital broadcasts

A terminal apparatus for interactively switching pieces of presentation data in a system which repeatedly broadcasts pieces of presentation data and corresponding pieces of navigation data including a receiver for receiving the presentation data, a reproduction apparatus, and a cache storage for storing pre-received pieces of presentation data and navigation data. Navigation data is analyzed to detect pieces of link-target presentation data which are presented to an operator. When the operator selects one of the link-target presentation data stored in the cache storage, the reproduction apparatus reproduces the presentation data.

TERMINAL APPARATUS AND METHOD FOR ACHIEVING INTERACTIVE OPERATIONS BY DISPLAYING A DESIRED PIECE OF IMAGE INFORMATION AT HIGH SPEED USING CACHE MEMORIES, OUT OF A LARGE AMOUNT OF IMAGE INFORMATION SENT IN A ONE-WAY DIRECTION

A data reception apparatus that includes a storage unit for storing a direct directory message body specifying a data block identifier by the reference name, a key information selection unit for obtaining the reference name, a reception unit for receiving multiplexed data of indirect directory message blocks, data blocks, and the direct directory message body data, a separation unit for separating the multiplexed data, a directly obtaining unit for outputting the data block identifier using the direct directory message body, a selection unit for outputting the identifier using indirect directory message bodies, a directory message body obtaining unit , an indirect obtaining unit , a data block selection unit for selecting the data block according to the output identifier and for extracting a data file, a selection unit for restoring and storing the direct directory message body, and a restoration unit . When a direct directory message body includes a reference name, a data block identifier may be directly specified by the reference name without tracing indirect directory message bodies, and when a direct directory message body does not include a reference name, another direct directory message body is obtained and stored. As a result, the time for reception process is reduced.

Data transmission apparatus and data reception apparatus

Growing community of inventors

Neyagawa, Japan

Tatsuya Shimoji