Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2006-10-10
2006-10-10
Chase, Shelly (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S755000
Reexamination Certificate
active
07120853
ABSTRACT:
A method of determining an offset, modulo n, of at least one point with respect to a sequence50of at least n symbols, the sequence consisting of a repeating codeword of a cyclic position code, the cyclic position code having length n and minimum distance dmin, the method including: obtaining, from the sequence50and at a position corresponding to the at least one point, a subsequence52of length w symbols, where w≧n−dmin+1;mapping the subsequence52to a codeword58of the cyclic position code most likely to match the subsequence in the presence of symbol errors60, 62in the subsequence; and determining an offset54, in the sequence50, of the codeword58thus obtained, and thereby determining the offset of the at least one point.
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Lapstun Paul
Silverbrook Kia
Chase Shelly
Silverbrook Research Pty Ltd.
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