Integrated circuit for the color decoder of a television set

Details Integrated circuit for the color decoder of a television set Integrated circuit for the color decoder of a television set

1984-11-23

1987-04-28

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 24, H04N 964, H04N 327

Patent

active

046618449

ABSTRACT:
An integrated circuit is provided for the color decoder of a television receiver set and in particular for a multistandard decoder for NTSC, PAL and SECAM. Conventionally employed external components used for synchronizing and amplitude calibration are replaced by circuits forming part of an integrated circuit, which automatically adjust for the desired operational mode such as NTSC, PAL or SECAM in each case. This system saves previously required external components such as trimming resistors, potentiometers or quartz crystals. A digital automatic frequency control circuit can provide the synchronization of oscillators within the integrated circuit which oscillators generate the required reference carriers required for the decoding of the chrominance carrier. In addition, the switches for the processing of signals of various color television standards can be incorporated within the integrated circuit.

REFERENCES:
patent: 4414563 (1983-11-01), Juhnke et al.
patent: 4419688 (1983-12-01), Miskin et al.
"TDA 3560-Ein-Chip-Pal-Decoder", Radio Mentor Electronics (Germany), vol. 46, No. 1/2 (1980).
Shimano et al., "One-Chip Chroma IC for Color TV Receiver", IEEE Transactions on Consumer Electronics, vol. CE-21, No. 2, pp. 164-170, May 1975.
Harwood et al., "Integrated NTSC Chrominance/Luminance Processor", IEEE Transactions on Consumer Electronics, vol. CE-26, No. 4, pp. 693-706, Nov., 1980.
Harwood, "An Integrated One-Chip Processor for Color TV Receivers", IEEE Transactions on Consumer Electronics, vol. CE-23, No. 3, pp. 300-310, Aug., 1977.

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