Switching system with video switching matrix

Details Switching system with video switching matrix Switching system with video switching matrix

1985-04-08

1987-07-21

Rubinson, Gene Z.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 53, H04Q 352, H04N 5268

Patent

active

046823492

ABSTRACT:
The switching matrix comprises two data bus each one with n channels for conveying video signals, one address bus, control conductors and an array of N switching points; each of said switching points has two output switches, two input switches, one circuit receiving address signals to select on each data bus a channel corresponding to the received address, one circuit receiving control signals designed to validate either the pair formed by the first output switch and the second input switch, or the pair formed by the second output switch and the first input switch, to validate the setting up of a connection between the video transmitting means of the associated subscriber terminal and the selected channel.

REFERENCES:
patent: 3519744 (1970-07-01), Dorros et al.
patent: 3654566 (1972-04-01), Wellhausen et al.
patent: 3662110 (1972-05-01), Van Fossen et al.
patent: 3766324 (1973-09-01), Budrys
patent: 4024352 (1977-05-01), Mukaemachi et al.
patent: 4054908 (1977-09-01), Poirier et al.
patent: 4402008 (1983-08-01), Teraslinna
patent: 4446552 (1984-05-01), Tweedy
patent: 4533943 (1985-08-01), Poirier

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