Audio chip with switchable audio output pathways

Details Audio chip with switchable audio output pathways Audio chip with switchable audio output pathways

2005-10-11

2005-10-11

Tran, Sinh (Department: 2644)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

C381S120000, C381S074000, C381S123000

Reexamination Certificate

active

06954675

ABSTRACT:
An audio chip with switchable audio output pathways that can be connected to an external circuit board comprises: an operational amplifier, a first output end, a second output end, a means for connection switch, and a status register. An audio signal is outputted to the external circuit board via a first output end of the audio chip. The operational amplifier receives the audio signal that, after amplification, is outputted to the external circuit board via a second output end of the audio chip. According to the connection configuration of the first and second outputs of the audio chip with respect to the external circuit board, an operator can adequately switch the means for connection switch so that a plurality of sound adjusters can control the audio signal delivered by the audio chip.

REFERENCES:
patent: 5719866 (1998-02-01), Du et al.
patent: 5734729 (1998-03-01), Tran
patent: 5910991 (1999-06-01), Farrar
patent: 6321278 (2001-11-01), Phu et al.

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