Audio signal switching apparatus

Details Audio signal switching apparatus Audio signal switching apparatus

2006-01-27

2010-12-21

Lee, Ping (Department: 2614)

Electrical audio signal processing systems and devices

Switching

C700S094000

Reexamination Certificate

active

07856109

ABSTRACT:
An audio signal switching apparatus at least comprises an audio jack, a speaker jack, a detection circuit and a control circuit. The audio jack and the speaker jack are separately configured in a computer system. The detection circuit detects whether the computer system is turned on or turned off. The control circuit is connected to the detection circuit and electrically connects the audio jack to the speaker jack when the computer system is turned off.

REFERENCES:
patent: 5768601 (1998-06-01), Tran
patent: 6675233 (2004-01-01), Du et al.
patent: 2002/0052990 (2002-05-01), Chan et al.
patent: 2004/0249489 (2004-12-01), Dick
patent: 2367042 (2000-03-01), None
patent: 2572463 (2003-09-01), None
English language translation of abstract of CN 2572463.
English language translation of abstract of CN 2367042.

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