Method of entering audio signal, method of transmitting audio si

Details Method of entering audio signal, method of transmitting audio si Method of entering audio signal, method of transmitting audio si

1997-08-29

2000-03-28

Lee, Ping

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

381 1, G06F 1700

Patent

active

060443073

ABSTRACT:
A method of entering an audio signal into a data processing apparatus, in which analog audio signals of at least two channels as the audio signal are digitized by and transmitted from an audio signal output device on a side of an audio source to an audio signal input device on a side of the data processing apparatus. A clock signal is supplied from the audio signal input device to the audio signal output device. The audio signal output device performs delta-sigma (.DELTA..SIGMA.) modulation on the analog audio signals of at least two channels so as to convert each of the analog audio signals of at least two channels into one-bit digital audio data for each of the at least two channels, based on the clock signal supplied to the audio signal output device. The one-bit digital audio data for the each channel is alternately selected based on the clock signal, to perform time-division multiplexing on the one-bit digital audio data for the at least two channels, to thereby produce one-bit multiplex audio data. The one-bit multiplex audio data is supplied to the audio signal input device.

REFERENCES:
patent: 5561425 (1996-10-01), Therssen
patent: 5577044 (1996-11-01), Oxford
patent: 5768316 (1998-06-01), Sogo
patent: 5844513 (1998-12-01), Nishio

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