Communications: electrical – Digital comparator systems
Patent
1976-01-19
1978-02-21
Yusko, Donald J.
Communications: electrical
Digital comparator systems
179 15AQ, 179 15A, H04Q 900, H04J 300
Patent
active
040756084
ABSTRACT:
A data switch which can rapidly configure and reconfigure multiple channels between computer equipments for digital data transmitted at a rate in excess of 10 megabits per second. The switch includes a switch matrix connected between an input and an output voltage level buffer, a mini computer, and control circuitry. The switch matrix comprises three stages, each containing 256 switching elements which are active integrated circuit elements each having 16 data inputs and one data output. A channel is configured through the switch matrix when one switching element in each stage responds to a control signal to couple one of its data inputs to its data output, over a million different channel configurations being possible. Each switching element is heavily grounded to effectively eliminate cross talk between channels and each data input line of each switching element is provided with an amplifier to improve time fidelity of the switch.
REFERENCES:
patent: 3609668 (1971-09-01), Dupieux et al.
patent: 3909786 (1975-09-01), Lawrence
patent: 3956593 (1976-05-01), Collins et al.
patent: 3963872 (1976-06-01), Hagstrom et al.
RCA Technical Notes, TN No. 847, 10-8-69 (4 sheets), "Very High Speed Digl Circuit Interconnection System", W. Blumenstein & M. Johnson.
Fendelman H.
Rubens G. J.
Sciascia R. S.
The United States of America as represented by the Secretary of
Yusko Donald J.
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