Color signal processing circuit capable of processing PAL/NTSC c

Details Color signal processing circuit capable of processing PAL/NTSC c Color signal processing circuit capable of processing PAL/NTSC c

1996-03-15

1998-11-03

Powell, Mark R.

Television

Synchronization

Phase locking regenerated subcarrier to color burst

348507, 348643, 348708, H04N 945, H04N 970, H04N 964

Patent

active

058316809

ABSTRACT:
In a color signal processing circuit capable of processing a PAL/NTSC color television signal, in order to prevent an image deterioration caused by chromatization when a PAL signal is received in an NTSC signal receiving mode, there is provided a gate control signal generating circuit for alternately generating gate control signals "GA" and "GK", one for one horizontal period and the other for a next one horizontal period, in response to application of a phase inverting pulse "R" which inverts in polarity every one horizontal period.

REFERENCES:
patent: 3673320 (1972-06-01), Carnt et al.
patent: 3772461 (1973-11-01), Horaguchi
patent: 4688082 (1987-08-01), Kato

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