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US 2003/0154344 A1Published application
Data recording and reproducing method and apparatus capable of recompressing individual data blocks
AssigneeNEC Corporation
InventorSatoshi Itoi
Life of this patent
Estimating the term…
Abstract
In a data recording and reproducing method, data blocks are recorded in a storage unit. Priority levels each for one of the data blocks are set and stored. It is determined whether or not a vacant area of the storage unit is expected to be short. When the vacant area of the storage unit is expected to be short. The data blocks recorded in the storage unit are recompressed in accordance with the stored priority levels.
Claims60
A data recording and reproducing method comprising the steps of:
- recording data blocks in a storage unit;
- setting and storing priority levels each for one of said data blocks;
- determining whether or not a vacant area of said storage unit is expected to be short;
- and
- recompressing said data blocks recorded in said storage unit in accordance with said stored priority levels when the vacant area of said storage unit is expected to be short.
2 more elements
A data recording and reproducing apparatus comprising:
- a storage unit;
- a recording data processing unit for performing a data recording process upon input data blocks;
- a recording executing unit, connected to said recording data processing unit and said storage unit, for recording said data blocks in said storage unit;
- a reproducing executing unit, connected to said storage unit, for reproducing said data blocks recorded in said storage unit;
- a reproduced data processing unit, connected to said reproducing executing unit, for performing a reproduced data process upon said reproduced data blocks;
- a recompressing unit, connected between said reproduced data processing unit and said recording data processing unit, for performing a recompressing operation upon said reproduced data blocks;
- and
- a management unit, connected to said recording executing unit, said reproducing executing unit and said recompressing unit,
- said management unit setting and storing priority levels each for one of said data blocks, determining whether or not a vacant area of said storage unit is expected to be short, so that said data blocks recorded in said storage unit are recompressed in accordance with said stored priority levels when the vacant area of said storage unit is expected to be short.
6 more elements
Dependencies are inferred from the claim text.