Television apparatus responsive to a transmitted color reference

Details Television apparatus responsive to a transmitted color reference Television apparatus responsive to a transmitted color reference

1977-01-24

1986-07-15

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 28, H04N 968

Patent

active

RE0322091

ABSTRACT:
A color reference signal is inserted during the vertical blanking interval of a transmitted television waveform, for utilization by The described apparatus in automatically setting the hue and saturation of the display of an NTSC or PAL receiver. The apparatus responds to the transmitted burst signal to lock the frequency of the sub-carrier oscillator of the Receiver and to the transmitted reference signal to adjust the phase of its oscillations.

REFERENCES:
patent: 2774072 (1956-12-01), Loughlin
patent: 2840703 (1958-06-01), Dobson
patent: 3267210 (1966-08-01), Townsend
patent: 3368030 (1968-02-01), Wiencek
patent: 3456068 (1969-07-01), Wilhelmy
patent: 3571499 (1971-03-01), Hansen et al.
patent: 3604844 (1971-09-01), Ross
patent: 3637924 (1972-01-01), Cecchin
patent: 3679816 (1972-07-01), Avins et al.
Lewis, "Proposed Subcarrier Pilot for NTSC-Type Colour Television", Electronics and Power, pp. 207, 208, Jun. 1964.
MacDiarmid et al, "Automatic Differential Gain and Phase Correction for Long-Distance Colour Television Links", Wireless World, pp. 113-115, Mar. 1965.
Auld et al, "A Continuous Simplified Single-Line Color-Bar (SCLB) Test Signal Facility in Color Cameras", SMPTE, vol. 77, No. 3, Mar. 1968., pp. 228-232.
"Color-Television Demonstrations," London, Oct. 26th to 29th and Nov. 5, 1964", EBU Review, Part A-Technical, p. 296, No. 88, Dec. 1964.
Neal, "A Brief History of the VIR: Vertical Interval Reference Signal", Communications/Engineering Digest, pp. 20-25, Jan. 1976.

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