Sony Corporation

Satoshi Yutani

Satoshi Yoneya

Masakazu Yoshimoto

Norikazu Ito

Koichi Sato

Hiroyuki Fujita

Satoshi Katsuo

Tomohisa Shiga

Jun Yoshikawa

Masaki Hirose

Yasuo Iwasaki

Tsutomu Yamamoto

Yasumasa Kodama

Atsushi Hasebe

Taro Shigata

Shingo Nakagawa

Gentaro Okayasu

Shintaro Mizutani

Ryuichi Asano

Yoshiaki Kayukawa

Yoji Shimizu

Kaoru Motohashi

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.

Reproducing apparatus and method, and recording apparatus and method

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

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.

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

Video data controllers and disk array units are connected with an independent input serial transmission line and an independent output serial transmission line. Data is serially transmitted between the video data controllers and the disk array units. Data of the video data controllers is sent with time slots assigned thereto. Data has a synchronous signal at the beginning thereof. The synchronous signal synchronizes with time slots. The synchronous signal is followed by commands/status and video data.

Data recording/reproducing apparatus, data recording/reproducing method and data format

The endless recording which enables partial saving of recording contents and facilitates editing or management is to be achieved. To this end, if recording has been made for a pre-set time, such as one hour, a new region is secured to continue the recording, at the same time as a region carrying the oldest recorded contents is sequentially evacuated in an amount equal to the newly secured region. The partial saving region (00:10:00:00 to 00:20:00:00) is not to be evacuated.

Data recording method and apparatus

In a data recording and reproducing apparatus ( ), according to a release instruction from a server controller ( ) added to a PLAY_OPEN command for requesting preparation of reproduction of arbitrary data, management information is changed so that an area occupied by reproduced data of the data in the on-producing file becomes an area where new data can be recorded anytime while the file is reproduced. As a result, for example, in the case where plural data are recorded, before the reproduction of the on-reproducing file is completed, the data recording area occupied by the reproduced data is changed into an area where new data can be recorded by efficiently utilizing recording areas in a data accumulation section ( ) if on-producing file exists.

Data recording and reproducing apparatus and method for recording and reproducing data from a non-linear recording medium

Upon recording, movable terminals b of switches and are switched to the terminals a sides, whereas upon reproduction, they are switched to the terminals a sides. A controller controls switches and so that memories - through- respectively store the data from a decoder , e.g., the data in every predetermined units corresponding to individual one cycles of assigned time slots, for example. The respective data stored in the memories - through- are successively read in predetermined time slots and recorded on recording unit through a time-sharing type bus . Upon reproduction, the respective data given in the predetermined units are successively written into the memories - through - in predetermined time slots through the bus and output via an encoder in one cycle of the time slots. Writing and reading processes are not executed simultaneously within the same memory and the recording and reproduction of data can be properly performed with ease. Data antecedent to and prior to the present time are stored in the memories, so that the response to a special reproducing operation can be made excellent.

Data recording and reproducing method and data recording and reproducing apparatus

This invention relates to an apparatus for storing and transmitting AV data. A receiving buffer unit for storing AV data temporarily, a transmitting buffer unit for storing temporarily the AV data to be transmitted, and a primary storage unit for storing AV data and a secondary storage units for storing AV data are connected to each other by means of a subnetwork. A server control unit for controlling the respective units is connected to the subnetwork. Since these units are connected by means of the subnetwork, any restriction is not given to spaces for installing the units. The capacities of the primary and secondary storage units and the transmitting buffer unit are selected so that they become larger in order of the secondary storage unit, the primary storage unit and the transmitting buffer unit. Thereby, the storage units and the transmitting buffer unit are controlled in a hierarchical form. This makes it possible to construct an AV sever system having large capacity and good responsivity with good cost balance.

System for linking a main control unit to data receiving and transmitting units and a first and second storage units by a network

A data input/output means comprises memories, each having two banks for storing a volume of data good for predetermined cycled period in an own time slot allocated to it and a control means accesses a recording medium in an own time slot to read out a volume of data for the first predetermined cycle period and store it in the first bank of the date input/output means and also read out a volume of data for the next predetermined cycle period on the way of reading out said data for the first predetermined cycle period and store it in the second bank of said data input/output means before starting the data output from the first bank after the elapse of a predetermined period of time, the switching from said first bank to said second bank being so controlled as to take place at a predetermined timing.

Growing community of inventors

Kanagawa, Japan

Satoshi Yutani