Data switch with multiplexers for forming data connections and c

Details Data switch with multiplexers for forming data connections and c Data switch with multiplexers for forming data connections and c

1994-09-30

1996-01-23

Ray, Gopal C.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

395775, 34082579, 370 54, 364260, 3642382, 3642419, 364DIG1, G06F 1300, G06F 1517

Patent

active

054871557

ABSTRACT:
A data switch interconnects a number of data processing nodes. The switch includes a number of port units for interfacing with the processing nodes, a number of multiplexing units for performing the switching, and a connection control unit. When a port unit wishes to initiate a connection, it sends a connection command over a command bus to all the multiplexing units and to the connection control unit, specifying a proposed data connection. Each multiplexing unit responds to the connection command by preparing the proposed data connection. At the same time, the connection control unit checks whether the proposed data connection is permissible. If it is permissible, the connection control unit then sends a GO signal to all the multiplexing units instructing them to complete the prepared connection.

REFERENCES:
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patent: 4523273 (1985-06-01), Adams, III et al.
patent: 4701906 (1987-10-01), Ransom et al.
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patent: 5083308 (1992-01-01), Gaulke et al.
patent: 5113390 (1992-05-01), Hayashi et al.
patent: 5396638 (1995-03-01), Kanekura
patent: 5404461 (1995-04-01), Olnowich et al.

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