Switching system for computers with 2-bit condition-representing

Details Switching system for computers with 2-bit condition-representing Switching system for computers with 2-bit condition-representing

1990-03-01

1993-08-03

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 24, 370 32, 34082506, 371 91, H04L 500, G05B 2300

Patent

active

052336026

ABSTRACT:
In a switching system, two electronic appliances, such as computers, operable under an on-line condition or a standby condition, and a single condition-switching controller capable of supplying condition-switching instructions to the two electronic appliances. At the condition-switching controller, two signal lines are commonly employed for connecting these electronic appliances to the controller, and various 2-bit signals are furnished via the two signal lines to the electronic appliances. One electronic appliance recognizes that the 2-bit signals having "10" and "01" contents correspond to "the standby condition" and "the on-line condition", respectively, whereas the other electronic appliance recognizes that the 2-bit signals having "01" and "10" contents correspond to "the on-line condition" and "the standby condition", respectively.

REFERENCES:
patent: 3303474 (1967-02-01), Moore et al.
patent: 3725582 (1973-04-01), Davis
patent: 3943283 (1976-03-01), Caragliano et al.
patent: 4363121 (1982-12-01), Schlyter
patent: 4516236 (1985-05-01), Hadziomerovi
patent: 4618952 (1986-10-01), Bochor et al.
patent: 4740952 (1988-04-01), Vernieres et al.
patent: 4831617 (1989-05-01), Iwasaki
patent: 4841521 (1989-06-01), Amada et al.
patent: 4985886 (1991-01-01), Yomogida et al.
Ronald L. Krutz, "Microprocessors and Logic Design", John Wiley & Sons, 1980, pp. 98-103.

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