Sony Corporation

Satoshi Yoneya

Masakazu Yoshimoto

Norikazu Ito

Tomohisa Shiga

Satoshi Yutani

Satoshi Katsuo

Jun Yoshikawa

Hiroyuki Fujita

Koichi Sato

Masaki Hirose

Yasuo Iwasaki

Yasumasa Kodama

Norio Ebihara

Atsushi Hasebe

Shouji Nakamura

Akira Yamaguchi

Kenji Mori

Tsutomu Yamamoto

Noboru Asamizuya

Taro Shigata

Shoji Nakamura

Yoshinori Koishikawa

Gentaro Okayasu

Shintaro Mizutani

Syuichi Takazawa

Yuichi Kojima, Deceased

Kazutaka Iinuma

Yoji Shimizu

Disclosed is a method for interchanging contents information and a system for interchanging contents information. A loop that a receiving side CLsends a request signal CLcarrying position data pd to a sending side SVthrough a communication system NT, the sending side SVsends back contents information corresponding thereto as a sending signal SV, and the receiving side CLdisplays the signal is repetitively updated and performed at a high frequency by repetitively updating and sending the position data pd at a high frequency. Since the achievable frequency of repetitive updating and performing the loop varies by the combination of receiving side CL, communication system NT, and sending side SV, the achievable maximum frequency mxfQ for each loop is determined from a given table or by actual measurement. A standard frequency stfQ which does not exceed the thus determined frequency is set, the processes along the loop are performed at the standard frequency stfQ or a lower frequency. As a result, power consumption is reduced and communication load is mitigated.

System for controlling information processing frequency at each stage in a loop based on receiver's updated request information

A data recording and reproducing apparatus () which generates a plurality of divided data through dividing input data Dusing a distributor () if recording data, while generating redundancy-code data Pand Pusing Read-Solomon-code data which can perform error-correcting on a plurality of divided data, and records the divided data and the redundancy-code data P, Pon HDDstoand. The data recording and reproducing apparatus () reproduces the divided data and the redundancy-code data from the HDDstoand, performs error-correcting processing on the divided data based on the redundancy-code data by an error corrector (), and outputs the divided data which have been error-corrected after multiplying the divided data by a data multiplier () if reproducing data.

Apparatus and method for recording and reproducing data, and AV server

An image recording and reproducing apparatus and an image recording and reproducing method in which, in an AV server using a so-called G-Shuttle system, the processing required in the high-speed playback mode can be simplified. A corresponding relationship between image groups results from dividing image data of each image unit by a plurality of image groups and groups of a first memory are being cyclically changed at every image unit, the image groups are recorded by the first memory and error-correcting codes of the image groups are generated at every image unit and recorded by a second memory. During normal speed playback, the image groups and the error-correcting codes are reproduced and digital errors of the image groups are corrected. During high-speed playback, the error-correcting codes are not reproduced.

Image recording and reproducing apparatus and image recording and reproducing method

A data storing apparatus for inputting and outputting a plurality of types of data in parallel and storing data with a disc shaped record medium that is randomly accessible is disclosed, that comprises an inputting means for inputting a plurality of types of data in parallel and categorizing the plurality of types of data for each type, a recording means composed of at least one disc shaped record medium that is randomly accessible, and a record controlling means for distributively recording at least one channel of and the plurality of types of data that is input by said inputting means to radially divided areas of the disc shaped record medium, the radially divided areas corresponding to the types of data.

Method and apparatus for storing different types of data on the same storing medium

There is provided an image reproducing apparatus and an image reproducing method which allow reproducing speed to be shifted instantly when a change of the reproducing speed is requested in a multi-channel AV (Audio Visual) server. When a request to reproduce an image is made, the image reproducing apparatus reads image data of the part corresponding to the requested reproducing speed out of the HDDs to store in a temporary storage section. Then, an image output I/F reads the image data stored in the temporary storage section and structures a reproduced image by using the image data. In this case, a controller section controls a pattern in reading the divisional data by the image output I/F and structures a reproduced image by means of various reproducing speeds by this reading pattern.

Image reproducing apparatus and image reproducing method

A data recording and reproducing apparatus capable of easily obtaining information which has few dropout and is necessary for variable speed reproduction at the time of variable speed reproduction. An image group dividing unit divides input image data into a plurality of image groups on a unit image basis, thereby forming plural divided data. After the formed divided data is temporarily stored into an image data temporary storing unit, the divided data is outputted as image data which is a data stream of the divided data in a predetermined image unit to a disk array apparatus via an HDD output interface unit. Each disk array apparatus records the divided data into HDDs so as to periodically change the relation between the HDDs and the groups of data to be recorded to the HDDs in a predetermined pattern.

Data recording and reproducing apparatus and method

In a video data reproducing apparatus adapted for reading out data including video data stored on plural non-linear accessible recording media by time slots allocated thereto to output those data, when the video data which has been read out from the recording medium is outputted to the external as n (n>1) times speed video data, a processing is carried out by a reproduction picture dividing section such that when n is integer, output image 1 frame is divided by n, while when n is not integer, output image 1 frame is divided by m (m is integral part of n: n&equals;m. . . . ), and such a processing is carried out by a reproduction image generating section to allocate n frames or m frames of the video data which has been read out from the recording medium to the output image 1 frame divided by n or divided by m to generate reproduction image.

Video data reproducing device and video data reproducing method

A data reproducing apparatus characterized by comprises a data accumulation device consisting of a non-linearly accessible recording medium for accumulating data including video data, a plurality of data reproducing device adapted to storing the data read out from said data accumulation device in respective memories, converting said data stored in the memories to a predetermined data format and outputting the data and a control device for allocating time slots to said data reproducing device with a predetermined cycle period and controlling said data reproducing device so as to cause them to read out said data from said data accumulation device and store them in said respective memories in said respective time slots, each of said memories including at least three banks, each having a capacity for storing data for the time slots of each said predetermined cycle period, said control device assigning to the data reproducing device operating for variable speed replaying the time slots to be allocated to the remaining data reproducing device.

Data reproduction using time slot allocation

A data recording and reproducing apparatus ( ) which generates a plurality of divided data through dividing input data D using a distributor ( ) if recording data, while generating redundancy-code data P and P using Read-Solomon-code data which can perform error-correcting on a plurality of divided data, and records the divided data and the redundancy-code data P , P on HDDs to and . The data recording and reproducing apparatus ( ) reproduces the divided data and the redundancy-code data from the HDDs to and , performs error-correcting processing on the divided data based on the redundancy-code data by an error corrector ( ), and outputs the divided data which have been error-corrected after multiplying the divided data by a data multiplier ( ) if reproducing data.

There is provided an AV server system with high operationality for a simple use. A file system is not provided in an AV server, and AV data are continuously recorded or reproduced from a place (sector) of a random-accessible HD where a magnetic head is positioned.

Recording apparatus and recording method, and reproducing apparatus and reproducing method

An AV server comprises a processor part ( ) for performing various signal processing, such as compression-expansion, of inputted video and audio signals, a video RAID part ( ) for storing video signals, and an audio RAID part ( ) for storing audio signals. The processor part ( ) has a plurality of I/O boards ( ), provided for each channel, for supplying audio signals and video signals to the audio RAID part ( ) and the video RAID part ( ) respectively, and for receiving audio signals and video signals from the audio RAID part ( ) and the video RAID part ( ) respectively. The video RAID part ( ) is of RAID-3 configuration. The audio RAID part ( ) performs writing and reading of audio signals corresponding to each of a plurality of audio signal channels independent of the video RAID part ( ).

Video and audio recording with audio being recorded in plural channels independently of video on different recording media

A data recording/reproducing apparatus comprises a data recording/reproducing component for recording data including audio and/or video data in and reproducing such data from a plurality of non-linearly accessible recording medium, a plurality of input/output processing sections for processing the input data and outputting them to the recording/reproducing component, while processing the data output from the recording/reproducing component and outputting them, a controller for controlling the input/output processing sections so as to make them carry out the processing operations in the allocated respective time slots and outputting time slot signals with a fixed cycle period to the respective input/output processing sections, the controller being so adapted that, when there is an idle input/output processing section out of the plurality of input/output processing sections, it outputs the time slot signals to be output to the idle input/output processing section to the remaining input/output processing section. With such an arrangement, more time slots are allocated to the busy input/output processing sections, which can therefore output an increased number of data sheets per unit time for a high speed data reproducing operation to improve the operability of the apparatus.

Video data recording and reproduction using time slot allocation

This invention relates to a data recording and reproduction apparatus, and a method and a system for sending out data for preparing a log file of material codes and a sending time. The video server comprises a storage means utilizing a randomly accessible storage media, and a server controller for controlling the storage means and multiple input and output ports connected to the storage means. The input port includes a multiplexer for inserting the material code to identify video source onto compressed video signals derived from video signals fed to the input ports. Video signals with their material codes superimposed thereon are recorded as video sources on the storage means. A material code is extracted from any video signal that is reproduced, and a log file of the sending data (sending time and data including material code relating to the sent-out material) is generated.

Data recording and reproduction apparatus, method and system for sending out data

A matrix switcher selectively seizes plural compressed pictures and converts P-frames in a GOP into I-frames while modifying prediction data of B-frames in the GOP. A decoder expands the compressed pictures into original pictures. An input buffer memory converts the picture signals into component signals while converting the transfer rate. A picture processing unit performs various picture signal processing operations on the picture signals. An encoder encodes the processed picture signals for compression. An output buffer memory converts the transfer rate of sent-out data which are compressed processed signals. A controller controls processing operations by the matrix switcher, decoder, input buffer memory, picture processing unit, encoder and the output buffer memory. The compressed pictures processed by inter-frame compression can be switched smoothly. Moreover, picture processing can be performed on a wide gamut of pictures from still pictures to moving pictures, free-format pictures, pictures not dependent on transfer rate and on scalable-format pictures.

Picture signal processing apparatus

An image from a camera is to be recorded and reversion is to be made to an image of an optional scene to reproduce an image of such scene. To this end, a CPU converts image signals at a rate of 90 frames per second from a camera device into parallel signals to output image signals of the usual rate of 30 frames per second. A video server records the image signals from the CCU on a RAID If a pre-set scene is to be reproduced, the image signals are read out from the RAID in the order of the original image signals to output the read-out image signals to outside.

Growing community of inventors

Kanagawa, Japan

Satoshi Yoneya