Audio device

Details Audio device Audio device

2009-06-11

2011-12-13

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Headphone circuits

C381S309000, C381S370000, C381S123000, C455S232100, C455S234100, C455S234200

Reexamination Certificate

active

08077875

ABSTRACT:
An audio device includes a jack, a switch, an amplifier, an internal sound producer, and a determining circuit. The jack establishes a connection with an external sound producer. The switch is in an opened state when the connection is established, and in a closed state when the connection is open. The amplifier amplifies audio signals to amplified audio signals and sends the amplified audio signals to the switch. The determining circuit receives the amplified audio signals from the switch, and generates a high voltage to control the amplifier not to output the amplified audio signals to the internal sound producer when the switch is in the closed state, and generates a low voltage to control the amplifier to output the amplified audio signals to the internal sound producer. The determined circuit further filters out the amplified audio signals when the switch is in the opened state.

REFERENCES:
patent: 6069960 (2000-05-01), Mizukami et al.
patent: 6961594 (2005-11-01), Rankin
patent: 6984990 (2006-01-01), Shin
patent: 2005/0201568 (2005-09-01), Goyal
patent: 2006/0182289 (2006-08-01), Chu

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4259949