Audio and USB multiplexing

Details Audio and USB multiplexing Audio and USB multiplexing

2011-03-01

2011-03-01

Nguyen, Tanh Q (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

C710S011000, C710S014000, C710S015000, C710S016000, C710S018000, C710S038000, C710S051000, C710S100000, C710S104000, C710S105000, C710S300000, C710S303000, C710S304000, C710S305000, C710S306000, C710S311000, C710S313000, C710S314000, C710S315000, C710S316000

Reexamination Certificate

active

07899946

ABSTRACT:
An analog/digital switching circuit for connecting a primary electronic device to a peripheral electronic device, including D+ and D− signal lines connected to a primary electronic device, a first analog/digital switch connected to the D+ signal line, for multiplexing an input D+ signal to an output USB data signal or audio left or right signal, the multiplexed signal feeding into a peripheral device connector for connecting the primary device to a peripheral electronic device, a second analog/digital switch connected to the D− signal line, for multiplexing an input D− signal to an output USB data signal or audio right or left signal, the multiplexed signal feeding into the peripheral device connector, a headset left signal line connected to the primary device and to the output audio left signal of the first analog/digital switch, a headset right signal line connected to the primary device and to the output audio right signal of the second analog/digital switch, a first USB signal line connected to a USB connector and to the output USB data signal of the first analog/digital switch, a second USB signal line connected to the USB connector and to the output USB data signal of the second analog/digital switch, and an amplifier that amplifies the output audio left signal and the output audio right signal at gain levels appropriate for (i) a headset connected to the primary device, (ii) a speaker connected to the peripheral device, and (iii) an earpiece connected to the peripheral device.

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