System to share the DSP computation resources

Details System to share the DSP computation resources System to share the DSP computation resources

1989-02-22

1990-12-04

Dwyer, James L.

Telephonic communications

Concentrator or trunk selector

Concentrator-distributor pair

379242, 370 56, H04M 906

Patent

active

049759477

ABSTRACT:
Device for processing telephonic signals for putting in communication a plurality of subscribers by means of a telephone exchange employing circuits on cards of subscribers, comprising digital signal processing devices adapted to create filtering functions for the purpose of connecting the subscribers to one another, characterized in that it comprises, associated with said telephone exchange, at least two digital signal processing devices (15, 16) common to a plurality of lines of subscribers (10a-10n, 11a-11n), each connected, on one hand, to the telephone exchange (17) and, on the other hand, to a group of lines of subscribers and adapted to process the signals coming from said corresponding groups of lines of subscribers in shared time so as to effect calculations of filtering functions associated with the various subscribers in accordance with frequencies assigned to the calculations of filter stages adapted to constitute said filtering functions and the chronology of reception of said signals of subscribers.

REFERENCES:
patent: 3492435 (1970-01-01), Inose et al.
patent: 3819869 (1974-06-01), Lamartina et al.
patent: 4571721 (1986-02-01), Yasui et al.
R. Pickvance, "A Single Chip Digital Signal Processor. Part 1. Architecture and Addressing", Electronic Engineering, vol. 57, No. 698, Feb. 1985, pp. 53-56, 59, 63.

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