Excavating
Patent
1998-01-16
1999-07-06
Tu, Trinh L.
Excavating
371 4015, 371 377, G11C 2900
Patent
active
059205792
ABSTRACT:
A quick retry operation is possible by outputting an error flag pertaining to a sector after error correction processing of digital data. When an output of an error detection flag unit for a correction block indicates the existence of an uncorrectable error, the sectors are checked to see if the sectors corresponding to retrieved data include any error or not based on output from a sector error flag register B. When the sectors are judged as error, signals are retrieved again from a storage medium, restored in a memory, and an error correction processing is repeated again. The data such as that of P pictures or B pictures of MPEG which can be reproduced even with errors are output even when the error detection flag unit indicates the existence of the uncorrectable error. It enables identification of the sectors with the errors and simplifies the following operations pertaining to the error at a data receiving side by outputting the error flag along with the data.
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Hoshizawa Taku
Kawamae Osamu
Nagai Yutaka
Sagano Shuichi
Takeuchi Toshifumi
Hitachi , Ltd.
Tu Trinh L.
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