Signal processing device using several different filterings, esp

Details Signal processing device using several different filterings, esp Signal processing device using several different filterings, esp

1994-04-15

1996-09-10

Chin, Stephen

Pulse or digital communications

Transceivers

Transmission interface between two stations or terminals

375350, 379411, 379416, 379420, 36472413, 36472419, 341141, 341143, H04B 138

Patent

active

055552722

ABSTRACT:
The device comprises a first input (E1) and a first output (S1) which are capable respectively of receiving and delivering a plurality of analog signals and corresponding digital signals having different predetermined types of transmission specifications and associated with substantially homothetic predetermined elementary frequency attenuation templates. A second input (E2) and a second output (S2) are also provided, capable respectively of receiving and delivering a plurality of digital signals and corresponding analog signals having different predetermined types of transmission specifications, associated with different, substantially homothetic predetermined elementary frequency attenuation templates, as well as first and second signal conversion means arranged respectively between the first input and output and between the second input and output and including a single digital filter (6) in common, having a single frequency attenuation template which is compatible with all the elementary templates.

REFERENCES:
patent: 4984265 (1991-01-01), Connon et al.
patent: 5050474 (1991-09-01), Ogawa et al.
patent: 5051981 (1991-09-01), Kline
patent: 5131032 (1992-07-01), Esaki et al.
patent: 5220557 (1993-06-01), Kelley
patent: 5262972 (1993-11-01), Holden et al.
IEEE Journal of Solid State Circuits, vol. 15, No. 6, Dec. 1980 New York, pp. 1014-1021 Hiroshi Kuwahara et al "An Interpolative PCM CODEC With Multiplexed Ditital Filters".

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