Standard wave receiver and time code decoding method

Details Standard wave receiver and time code decoding method Standard wave receiver and time code decoding method

2005-08-30

2009-02-17

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Synchronizers

C713S500000

Reexamination Certificate

active

07492846

ABSTRACT:
A standard wave receiver and a time code decoding method, which receive a standard wave including a time code signal, in which one frame including plural time codes is repeated, and decode the time codes, are provided. The time code signal is sampled over a period, in which a plurality of the frames continue, and sampled value sequences including plural sampled values generated in time series are accumulated. The sampled value sequences are convolutionally added every predicted period of a marker code indicating a leading position of the frame to generate an added value sequence and a position of the marker code is determined on the basis of the added value sequence. Positions of the respective plural time codes are determined in accordance with the determined position of the marker code and, for each of the time codes, partial sampled value sequences, which corresponds to a position of the time code and is expected to take an identical value, is extracted out of the sampled value sequences, the partial sampled value sequences are convolutionally added to generate an added value sequence, and a value of the time code is determined on the basis of the added value. This makes it possible to decode a time code signal precisely even under an inferior reception environment.

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Kenji Fujita; Japanese Office Action Relating to JP 2004-251973; Aug. 12, 2008.

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