Radio-controlled timepiece, standard frequency reception...

Details Radio-controlled timepiece, standard frequency reception... Radio-controlled timepiece, standard frequency reception...

2007-03-13

2007-03-13

Tran, Khanh (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C368S047000

Reexamination Certificate

active

10299002

ABSTRACT:
The receiver receives the standard frequency signal that includes a time code. A sampling unit samples one bit of the received signal at 32 positions. A smoothing unit smoothens the result of sampling by dividing the 32 positions in two to four intervals and determines a value of the received signal in each interval. A waveform determining unit determines waveform of each bit of the received signal based on the value obtained in the smoothing unit. The decoding unit extracts the time code based on the determined waveform. A time unit correct the time based on the extracted time code.

REFERENCES:
patent: 4525685 (1985-06-01), Hesselberth et al.
patent: 5528560 (1996-06-01), Ogiyama
patent: 5668915 (1997-09-01), Baik et al.
patent: 5805647 (1998-09-01), Schafer et al.
patent: 6959198 (2005-10-01), Mitsugi
patent: 2005/0105399 (2005-05-01), Strumpf et al.
patent: 8-201546 (1996-08-01), None
patent: 11-304973 (1999-11-01), None

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