H - Electricity – 03 – M
Patent
H - Electricity
03
M
354/223
H03M 13/00 (2006.01) G11B 20/18 (2006.01)
Patent
CA 1248634
ABSTRACT A method for detecting error words in a block of words each consisting of a predetermined number of bits of a digital signal, and including first error check words for a first word series established by selecting a predetermined number of words from among the words, and including second error check words for a second word series established by selecting a predetermined number of words from among the words in a manner such that the last named predetermined number of words does not completely coincide with the words of the first word series, and including a third error check word for the words; comprising the steps of executing an error check for the data block by the third error check word and determining that an error is included in each of the words forming the data block when an error is detected, executing an error check with respect to the respective first and second word series by the first and second error check words after completion of the execution of the error check by the third error check word, and after completion of the execution of the error check, with respect to all of the words in each of the data blocks, setting either one of three states consisting of a state in which each of the words is correct, a state in which each of the words has an error, and a state in which it is not yet determined whether each of the words is correct or has an error in accordance with a situation of generation of an error in each of the data blocks.
503867
Gowling Lafleur Henderson Llp
Sony Corporation
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