Television reference signal digital indentification system

Facsimile and static presentation processing – Static presentation processing – Attribute control

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H04N 9535

Patent

active

041986512

ABSTRACT:
An electronic system for identifying a particular line of a plurality of lines in a pulse field, where, for example, the pulse field is either of the 262.5-line composite sync pulse trains produced by a conventional television receiver and the particular line is line 19 designated to carry a Vertical Interval Reference (VIR) signal, comprises digital circuitries for identifying a particular region corresponding to a known line in the pulse field and for counting from the known line to the particular line. Sensing circuitry determines whether a particular information component such as the VIR signal is present in each pulse field, and digital circuitry generates a presence indication signal when a presence indication criterion is met for the particular information component in a given plurality of fields.

REFERENCES:
patent: 3780218 (1973-12-01), Rennick
patent: 4089025 (1978-05-01), Banker et al.
patent: 4092674 (1978-05-01), Rhodes et al.
Electronic Servicing, Jul. 1976, pp. 30-32 "VIR Preview--At Last! Automatic Color," C. Babcoke.
Radio Electronics, Nov. 1976, pp. 83-85 "VIR Color Correction from Camera to Pix," R. Kenfield.
Electronic Technician/Dealer, Aug. 1976, pp. 14-16, 18, 21 "GE's Broadcast--Controlled Color System Part 1" (No Author).

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