Fast access antiphase control memory for digital data switches

Details Fast access antiphase control memory for digital data switches Fast access antiphase control memory for digital data switches

1975-03-14

1978-03-28

Brown, Thomas W.

H04J 300

Patent

active

040816109

ABSTRACT:
The disclosure describes a control memory for addressing inlet and outlet switching stages of a three stage digital switch. The control memory comprises two identical random access memories (RAM's) each having an address storage capacity equal to half the number of simplex connections which can be made through either stage of the switch. The arrangement described allows a large saving in the number of memory bits necessary to address the inlet and outlet switching stages and enables fast access of the control memory for the purpose of establishing or terminating connections.

REFERENCES:
patent: 3761894 (1973-09-01), Pilc et al.
patent: 3851105 (1974-11-01), Regnier et al.
patent: 3867579 (1975-02-01), Colton et al.
patent: 3878338 (1975-04-01), Hardy
patent: 3894189 (1975-07-01), Edstrom et al.
patent: 3920914 (1975-11-01), Regnier et al.
patent: 3927267 (1975-12-01), Voyer et al.

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