US 2001/0012442 A1Published application

Data recording and reproducing apparatus and data recording and reproducing method

AssigneeSony Corporation

InventorYasumasa Kodama

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Abstract

I/O processing sections for inputting and outputting AV data between themselves and the outside are connected to RAIDS through a network. Each I/O processing section includes an input processing section for distributing divided AV data inputted from the outside to two or more RAIDS and generating error-correcting codes of AV data for transferring it to at least one RAID, and an output processing section for correcting the AV data transferred from the RAID by using the error-correcting codes of the AV data transferred from the RAID to outputting the corrected data to the outside. With the function of correcting error in the network provided upstream, not only in the case of breakdown of the hard disk of RAIDS, but also in the case of breakdown of I/O processing upstream, outputting AV data without loss in reproduction can be performed, AV server is prevented from becoming larger in scale, and a load imposed on the network is prevented from increasing.

Claims10

Dependent claims

A data recording and reproducing apparatus comprising recording and reproducing means for recording and/or reproducing data containing video and/or audio data on and/or from a nonlinearly-accessible recording medium and a plurality of input and output processing means connected to said recording and reproducing means through a predetermined transmission line for processing said data inputted from the outside to output processed data to said recording and reproducing means in a time-division manner and which process said data outputted from said recording and reproducing means in a time-division manner to output processed data to the outside, wherein

said plurality of input and output processing means further include input processing means for dividing said data inputted from the outside to transfer divided data to said plurality of recording and reproducing means and which generates an error-correcting code of said data and which transfers said error-correcting code to at least one of said recording and reproducing means and output processing means for correcting erroneous data by using said error-correcting code outputted from said recording and reproducing means and which outputs error-corrected data to the outside if an error is detected from said data outputted from said recording and reproducing means.

A data recording and reproducing method comprising the steps of processing data containing video and/or audio data inputted from the outside to output processed data to a plurality of recording and reproducing means in a time-division manner, recording said data on a nonlinearly-accessible recording medium by said recording and reproducing means, reproducing said recorded data from said nonlinearly-accessible recording medium, outputting said reproduced data from said recording and reproducing means in a time-division manner, processing said outputted data and outputting said processed data to the outside comprising the steps of:

a first step of dividing and outputting said data inputted from the outside to said plurality of recording and reproducing means, generating an error-correcting code of said data and outputting said error-correcting code;
a second step of recording said divided data on said recording medium by each of said recording and reproducing means and recording said error-correcting code on said recording medium by each of said recording and reproducing means;
a third step of reproducing said data from said recording medium by each of said recording and reproducing means, reproducing said error-correcting code from said recording medium by each of said recording and reproducing means and outputting said reproduced data and said reproduced error-correcting code in a time-division manner through a predetermined transmission line;
and
a fourth step of correcting erroneous data by using said error-correcting code outputted from said recording and reproducing means and outputting said error-corrected data to the outside if an error is detected from said data outputted from said recording and reproducing means.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/731,994Filed 7 Dec 2000
Priority: JP 11-3490908 Dec 1999
Published: 9 Aug 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G06F 11/1076
Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's: parity data used in redundant arrays of…
H04N 7/17336
Transmission or handling of upstream communications: handling of requests in head-ends
H04N 21/2182
Comprising local storage units: involving memory arrays, e.g. RAID disk arrays
H04N 21/2318
Data placement on disk arrays: using striping

Family

US 7,221,848 B2Related patent
US 2001/0012442 A1This patent

From the US filing history. Foreign family members aren’t listed.

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