Stv Subscriber address system

Details Stv Subscriber address system Stv Subscriber address system

1979-10-29

1981-09-29

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358114, 358117, 358122, H04N 716

Patent

active

042926505

ABSTRACT:
A system for selectively addressing a plurality of television receivers, each of the receivers being identified by a unique n-bit address code, comprises means for transmitting a prefix code which is common to the p most significant bits of a group of address codes during a first horizontal scanning line of the vertical interval of a broadcast television signal. A plurality of suffix codes, each comprising the n-p least significant bits of a different one of the n-bit address codes of the group, are transmitted during each of a series of subsequently occurring horizontal scanning lines of the vertical interval for completely identifying the address codes of the group. Each television receiver includes a decoder for identifying when its associated address code has been transmitted in the form of a corresponding prefix and suffix code.

REFERENCES:
patent: 3668307 (1972-06-01), Face et al.
patent: 3676580 (1972-07-01), Beck
patent: 3878322 (1975-04-01), Sullivan
patent: 3919462 (1975-11-01), Hartung et al.
patent: 4081832 (1978-03-01), Sherman

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