Detector for detecting information carried by a signal...

Details Detector for detecting information carried by a signal... Detector for detecting information carried by a signal...

2007-12-25

2007-12-25

Britt, Cynthia (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error/fault detection technique

C714S776000, C714S758000, C714S715000

Reexamination Certificate

active

10923807

ABSTRACT:
A detector for detecting information carried by a signal having a sawtooth-like shape. The detector includes a first band-pass filter with center frequency around a first frequency value for filtering the signal and generating a first filtered signal, a second band-pass filter with center frequency around a second frequency value for filtering the signal and generating a second filtered signal, a first comparator for comparing the first filtered signal with a reference level and generating a first compared signal, a second comparator for comparing the second filtered signal with the reference level and generating a second compared signal, a clock generator for generating a reference clock having a frequency close to the first frequency value according to the second compared signal, and a detection module for generating a bit signal representing the information according to the first compared signal and the reference clock.

REFERENCES:
patent: 3670304 (1972-06-01), Andresen et al.
patent: 4882546 (1989-11-01), Takamura et al.
patent: 5295079 (1994-03-01), Wong et al.
patent: 6101312 (2000-08-01), Funayama
patent: 6774835 (2004-08-01), Cloetens
patent: 6988236 (2006-01-01), Ptasinski et al.

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