Receiver and electronic device

Optical communications – Receiver

Reexamination Certificate

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Details

C398S015000, C398S208000

Reexamination Certificate

active

08050572

ABSTRACT:
An abnormal pulse detection circuit in a receiver of the present invention includes: an incoming pulse edge detection circuit which detects the moment of rise of an input signal and outputs the result of the detection as an edge detection signal; a muting reference pulse generation circuit which generates a muting reference pulse based on the edge detection signal; a logic circuit which outputs a signal indicating a negative AND of the muting reference pulse and the input signal; a muting signal generation circuit which generates a muting signal from the output signal of the logic circuit; and a switching circuit which outputs the input signal or the muting signal. The receiver of the present invention can therefore reduce discomfort in hearing reproduced sound in case where a noise occurs in an audio signal due to a variation in pulse width.

REFERENCES:
patent: 2004/0062362 (2004-04-01), Matsuya
patent: 2005/0087688 (2005-04-01), Yokogawa et al.
patent: 2006/0008280 (2006-01-01), Yokogawa et al.
patent: 2007/0127604 (2007-06-01), Inoue et al.
patent: 2004135321 (2004-04-01), None
patent: 2006211510 (2006-08-01), None
patent: 2006304076 (2006-11-01), None
patent: 200727833 (2007-02-01), None

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