Disc recording method and device, and disc like recording medium
AssigneeSony Corporation
InventorMakoto Mitsuno
Life of this patent
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Abstract
In recording, onto a disc, data continuously reproduced such as picture data or speech data, etc., minimum continuous recording unit Ba is set. Picture data, etc. is divided into minimum continuous recording units Ba to record such divided data, on real time basis, into space areas existing in a distributed manner on the disc. Ba is expressed as follows: Ba=[Ri×Ro×{(N−1)×Tr+N×Tj}]/(Ri−Ro) Ri: input rate to buffer memory, Ro: output rate from the buffer memory, N: total number of continuous reproduction data simultaneously recorded and reproduced in carrying out reproduction, Tj: maximum seek time of reproduction head, and Tr: minimum read time from the disc.
Claims9
A disc recording method for recording data to be continuously reproduced (continuous reproduction data) onto a disc-shaped recording medium,
- wherein when input rate to a buffer memory of the continuous reproduction data which has or have been intermittently read out from the disc-shaped recording medium is assumed to be Ri, output rate of the continuous reproduction data continuously outputted from the buffer memory is assumed to be Ro, either larger one of total number of continuous reproduction data simultaneously recorded and reproduced in recording the continuous reproduction data onto the disc-shaped recording medium and total number of continuous reproduction data simultaneously recorded and reproduced in reproducing the continuous reproduction data from the disc-shaped recording medium is assumed to be N, maximum seek time of a reproduction head for reproducing data from the disc-shaped recording medium is assumed to be Tj, and minimum read time in reading out data from the disc-shaped recording medium is assumed to be Tr, minimum continuous recording unit Ba of the continuous reproduction data is set as
- Ba=[Ri×Ro×{(N−1)×Tr+N×Tj}]/(Ri−Ro),
- thus to record the continuous reproduction data on real time basis in a distributed manner every data quantity of the minimum continuous recording unit Ba or more with respect to the disc-shaped recording medium.
A disc recording apparatus adapted for recording, onto a disc-shaped recording medium, data to be continuously reproduced (continuous reproduction data),
- the apparatus comprising:
- an input unit to which the continuous reproduction data is or are continuously inputted;
- a buffer memory for temporarily storing the continuous reproduction data inputted thereto;
- a writing unit for intenmittently writing the continuous reproduction data stored in the buffer memory onto the disc-shaped recording medium;
- and
- a control unit for controlling the writing unit to control writing position of continuous reproduction data recorded onto the disc-shaped recording medium,
- the control unit being such that when input rate to a buffer memory of a reproducing unit of the continuous reproduction data which has or have been intermittently read out from the disc-shaped recording medium is assumed to be Ri, output rate of the continuous reproduction data continuously outputted from the buffer memory of the reproducing unit is assumed to be Ro, either larger one of total number of continuous reproduction data simultaneously recorded and reproduced in recording the continuous reproduction data onto the disc-shaped recording medium and total number of continuous reproduction data simultaneously recorded or reproduced in reproducing the continuous reproduction data from the disc-shaped recording medium is assumed to be N, maximum seek time of a reproduction head for reproducing data from the disc-shaped recording medium is assumed to be Tj, and minimum read time in reading out data from the disc-shaped recording medium is assumed to be Tr, minimum continuous recording unit Ba of the continuous reproduction data is set as
- Ba=[Ri×Ro×{(N−1)×Tr+N×Tj}]/(Ri−Ro),
- thus to record the continuous reproduction data on real time basis in a distributed manner every data quantity of the minimum continuous recording unit Ba or more with respect to the disc-shaped recording medium.
A disc-shaped recording medium on which one or plural data to be continuously reproduced (continuous reproduction data) is or are recorded,
- wherein when input rate when the continuous reproduction data which has or have been intermittently read out is or are inputted to a buffer memory of a reproducing unit (apparatus) is assimed to be Ri, output rate of the continuous reproduction data continuously outputted from the buffer memory of the reproducing unit is assumed to be Ro, total number of continuous reproduction data simultaneously recorded and reproduced in reproducing the continuous reproduction data is assumed to be N, maximum seek time of a reproduction head when the reproducing unit reproduces continuous reproduction data is assumed to be Tj, and minimum read time in reading out the continuous reproduction data is assumed to be Tr, minimum continuous recording unit Ba of the continuous reproduction data is set as
- Ba=[Ri×Ro×{(N−1)×Tr+N×Tj}]/(Ri−Ro), and
- wherein the continuous reproduction data is or are recorded on the real time basis in a distributed manner every data quantity of the minimum continuous recording unit Ba or more.
Dependencies are inferred from the claim text.