Excavating
Patent
1991-10-07
1992-06-23
Smith, Jerry
Excavating
G06F 1100
Patent
active
051249863
ABSTRACT:
A data recording/reproducing apparatus can record/reproduce digital data because a parity check code is added to the data at the time of recording. The original data can be reproduced through error correction even though part of the data is lost at the time of reproducing. In the present recording and reproducing apparatus, data immediately after being recorded is read and the number of errors is detected by a parity check code. When the number of errors in the data is equal to or greater than a predetermined reference value, the data is re-recorded in another unit recording area. By setting the reference value at a value less than the maximum number of errors which can be corrected by parity check codes, data can be re-recorded without apprehension that the errors cannot be corrected because the increased number of errors has been caused by deterioration of the recording state of the unit recording area due to repetition of reproducing operations.
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Kiyonaga Chitoku
Sudoh Kengo
Chung Phung My
Sharp Kabushiki Kaisha
Smith Jerry
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