Method and apparatus of verifying accurate writing through comparisons of written and read data
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United States of America Patent
Stats
-
Nov 28, 1995
Grant Date -
N/A
app pub date -
Jul 11, 1994
filing date -
Jul 9, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method is disclosed for verifying accurate writing of data onto a recording medium such as a disk. Data, provided to be written on the disk, is written onto the disk. The data written on the disk is read out from the disk. A user data portion in the data to be written on the disk is compared with a user data portion in the data read from the disk, so as to count a first number of errors between the both user data portions. An error correction on the data read from the disk is performed to count a second number of errors with respect to the user data portion in the read data. By comparing the first number of errors with the second number of errors, it is determined if data writing on the disk has been accomplished properly.
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