Combined television/data transmission system

Details Combined television/data transmission system Combined television/data transmission system

1974-09-05

1976-09-21

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

H04N 700

Patent

active

039820645

ABSTRACT:
A television transmission system of the kind in which some of the line scan periods of a conventional transmission that are left blank (as far as picture content is concerned) between successive frame transmissions are utilized for signalling data for selective display on the screen of a television receiver. The improvement over previous systems is that the information to be displayed as a line of data may be transmitted in a single line scan period. This is achieved by transmitting in a line scan period a page number and then in subsequent line scan periods the lines of data for that page. New page numbers are then transmitted followed by their respective lines of data in sequence. A receiver for the transmission system is described.

REFERENCES:
patent: 3345458 (1967-10-01), Cole et al.
patent: 3491199 (1970-01-01), Weinstein
patent: 3493674 (1970-02-01), Houghton
patent: 3575554 (1971-04-01), Schmidt
patent: 3792443 (1974-02-01), Breikss
patent: 3848082 (1974-11-01), Summers

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