GENERAL DESCRIPTION

The SAA7191B is a digital multistandard colour decoder suitable for 8-bit CVBS input signals or for 8-bit luminance and 8-bit chrominance input signals (Y/C).

FEATURES

• Separate 8-bit luminance (Y or CVBS) and 8-bit chrominance inputs (CVBS or C) from CVBS, Y/C,

S-Video (S-VHS or Hi8) sources

• Luminance and chrominance signal processing for standards PAL-B/G, NTSC-M, SECAM

• Horizontal and vertical sync detection for all standards

• Real-time control output RTCO to be used for frequency-locked digital video encoder (SAA7199B). RTCO contains serialized information about actual clock frequency, subcarrier frequency and PAL/SECAM sequence.

• Controls via the I2C-bus

• User programmable aperture correction (horizontal peaking)

• Compatible with memory-based features (line-locked clock)

• Cross-colour reduction by chrominance comb-filtering (NTSC) or by special cross colour cancellation (SECAM)