Device for the generation of analog signals through digital-anal

Details Device for the generation of analog signals through digital-anal Device for the generation of analog signals through digital-anal

1998-06-26

2000-06-13

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341120, H03M 300, H03M 110

Patent

active

060754745

ABSTRACT:
A device for the generation of analog signals by means of analog-digital converters comprises a block for the generation of words encoded on N bits and an analog-digital converter whose input is encoded on M bits, M being smaller than N. The device furthermore comprises a sigma-delta modulator, at the output of the first block, the bus being separated into M most significant bits reserved for the input of the analog-digital converter and N-M least significant bits that enter the sigma-delta modulator, the output of this modulator being an M-bit bus that is added to the M output bits of the word generation block by digital addition means, M being smaller than N.

REFERENCES:
patent: 5554987 (1996-09-01), Ooga
patent: 5563535 (1996-10-01), Corry et al.
patent: 5574455 (1996-11-01), Hori et al.
Paul O'Leary, et al., "An Oversampling-Based DTMF Generator," IEEE Transactions On Communications, vol. 39, No. 8, Aug. (1991), pp. 1189-1191 .

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