Mute switch

Details Mute switch Mute switch

2007-03-06

2007-03-06

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Soft switching, muting, or noise gating

C381S104000

Reexamination Certificate

active

10147436

ABSTRACT:
A mute switch including a field effect transistor receiving a mute control signal at its gate for selectively supplying an audio signal from an input node to an output node. A bipolar transistor is connected between the input node and the FET for reducing the voltage level of the audio signal prior to its application to the input node, and a further bipolar transistor is connected between the FET and the output node for raising the voltage level of the audio signal prior to its application to the output node. This serves to maintain the DC bias level of the audio output signal independently of the status of the mute control signal.

REFERENCES:
patent: 5201009 (1993-04-01), Yamada et al.
patent: 5300892 (1994-04-01), Hirai
patent: 5394476 (1995-02-01), Rollins et al.
patent: 6016352 (2000-01-01), Barmore
patent: 6563376 (2003-05-01), Fujisawa
patent: 2001127569 (2001-05-01), None
Sedra. A. et al. “Microelectronic Circuits”. New York, Oxford University Press, 4th ed., 1998. p. 221-22, 232-238, 253-254, 282, 290-294, and 810-812.

Affiliated with

Also associated with

Rating

Mute switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mute switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mute switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3721635