Asynchronous bidirectional node switch

Details Asynchronous bidirectional node switch Asynchronous bidirectional node switch

1993-08-09

1995-06-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

25022722, G02B 2700

Patent

active

054224934

ABSTRACT:
A node switch useful for resource sharing within a network environment incorporating computer control uses opto-electronic isolators and switching devices to route bidirectional communications between a common port and at least two I/O ports on an asynchronous basis. Separate power supplies are used for the ports and the internal circuitry, thus providing signal matching between disparate pieces of equipment. Multiple node switches may be cascaded or "daisy-chained" to provide for flexible switching, depending upon the application.

REFERENCES:
patent: 4088387 (1978-05-01), Lewis
patent: 4223217 (1980-09-01), Bongard et al.
patent: 4491792 (1985-01-01), Bullock et al.
patent: 4878729 (1989-11-01), Stewart
patent: 5045709 (1991-09-01), Ogawa
Signetics; High-Speed CMOS Data Manual 1986, pp. 7-592-7-604.

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