Circuit for addressing a set of registers in a switching exchang

Details Circuit for addressing a set of registers in a switching exchang Circuit for addressing a set of registers in a switching exchang

1981-11-25

1984-02-14

Brown, Thomas W.

Communications: electrical

Continuously variable indicating

With meter reading

179 18EB, 179 18J, 370 84, H04Q 356, H04Q 902, H04Q 1104

Patent

active

044319924

ABSTRACT:
An addressing circuit has a register search counter (20) connected to a first multiplexer (24) and to a second multiplexer (25), a memory (33) connected to the output of the first multiplexer for writing the type of processing of each register, a register counter (26) connected to the second multiplexer which is itself connected by its output to three address registers (28, 30, 32) in series. The output of the second register (30) is connected to the first multiplexer to write address the memory under the control of a write signal (CRW). The register search counter read addresses the memory and stops as soon as a register requiring rapid processing is detected; the second multiplexer receives a transfer signal (ST) to transmit the address applied to the output of the register search counter; the register counter (26) stops during the transfer signal.

REFERENCES:
patent: 3737873 (1973-06-01), Puccini
patent: 4022849 (1977-01-01), Kotler et al.
patent: 4220824 (1980-09-01), Castriotta et al.
patent: 4347582 (1982-08-01), Frank
Colloque International De Commutation Electronique, Mar. 28-Apr. 2 1966, Paris (FR) E. Prager: "An Experimental Electronic System Using Reed Contacts and Centralized Pogram Control:, pp. 63 to 72, p. 68, line 16 to p. 70, line 16.
Colloque International De Commutation Electronique, Mar. 18-Apr. 2 1966, Paris (FR), G. Le Strat et al: Programmation de l'Autocommutateur Artemis, pp. 1424 to 1429, p. 1427 line 22, to p. 1429, line 5.

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