Sony Corporation

Shingo Nakagawa

Masakazu Murata

Shinichi Morishima

Jun Yoshikawa

Satoshi Yutani

Ryo Abiko

Ryuichi Asano

Yoshiaki Kayukawa

Koji Mizumachi

Toshihiko Sasahara

Yukari Hosoya

Kaoru Motohashi

A data processing apparatus is provided. The data processing apparatus includes a plurality of ports, a memory, a determining unit, and a processing unit. The plurality of ports are configured to input and output video data. The memory is configured to store the video data when the video data is recorded onto a recording medium and when the video data is played back from a recording medium. The determining unit is configured to determine whether video data, for which a video data playback request designating one of the plurality of ports has been issued, is stored in the memory, using data identification information for identifying video data and usage management information. The processing unit is configured to have the video data stored in the memory outputted from the designated port, when the determining unit determines that the video data is stored.

Data processing apparatus and data processing method

Disclosed is a data processing apparatus that includes a plurality of ports inputting and outputting a clip including a plurality of types of essence, a memory storing the clip when recording or playing back of the clip from a recording medium, and a generator storing types of essence in separate regions of the memory, and generate identification information identifying the types of essence, while generating linking information indicating an association between regions of the memory storing one of the types of essence as a master essence and regions of the memory storing the remaining types of essence. The apparatus further includes a control unit outputting the master essence in the regions and the remaining essence in the regions associated therewith via linking information from the designated ports when the master essence in the clip of the video data subjected to playback request designating the ports is stored in the memory.

An information management system has an information management apparatus that receives a data stream with a general-purpose format, which is constituted of data and additional information, from a data-supplying system and separates the additional information from the data stream to hold and manage the data obtained by separating the additional information from the data stream. The information management system has a data storage device that stores the data obtained by separating the additional information from the data stream with the information management apparatus. The data is stored in the data storage device as it is with the data having the general-purpose format.

Information management system, information management apparatus and information management method

A data processing system including a storage section, a processing section, a control section, and a memory. The control section performing an action to allocate, to all of the ports, a time slot of a period of time which guarantees one seek action within a cycle time period which is the shortest time period within which it is permitted for the ports to successively accept a readout instruction, allocate, when another readout instruction is received, two or more time slots to that one of the ports which is designated by the readout instruction within a first cycle time period, and allocate one time slot to the port designated by the readout instruction within a second cycle time period after the first cycle time period. The processing section being operable to read out data from the storage section within one cluster per one time slot through that one of the plural ports to which the time slot is allocated by the control section and write the read out data into the memory and then process or output the data read out from the memory.

Data processing system, access controlling method, access controlling apparatus and recording medium

A data processing system able to raise the access efficiency to a memory when a plurality of processor access to the memory will be provided. An arbitration program executed by one input/output processing device determines a priority order for the access requests to the RAIDs so as to give the access permission with the highest priority to the access request linked with the reproduction port. The arbitration program notifies the result of the determination to the arbitrated programs executed by the other input/output processing devices.

Data processing system, access control method, and access control device

A reproducing apparatus and a recording apparatus capable of reducing time to continuously read and record a plurality of data. A readout order of data of a prescribed size composing data specified by a reproduction command from outside is determined so that all the data of the prescribed size can be continuously reproduced while a head goes and returns once in the radiation direction of a disk. The position of the head in the radial direction of the disk is controlled to continuously reproduce the data of the prescribed size in the readout order. The data of the prescribed size reproduced from the disk via the head is rearranged in a correct reproduction order based on the reproduction command and output.

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Kanagawa, Japan

Shingo Nakagawa