Automatic hue correction circuit

Details Automatic hue correction circuit Automatic hue correction circuit

1986-03-03

1987-09-22

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, H04N 964

Patent

active

046958754

ABSTRACT:
An automatic hue correction circuit in a television receiver has been found. The present circuit forms a Q signal and an I signal by demodulated three color difference signals. Then, the present circuit compensates hue automatically by rotating demodulation axes so that a level of the Q signal becomes smaller, when a level of the I signal is larger than a reference level.

REFERENCES:
patent: 4261009 (1981-04-01), Tumimoto et al.
patent: 4364082 (1982-12-01), Tonomura et al.
"IC Data Hot Service", Nippon TEC Data Corp. Jun., 1981, pp. 6-322.

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