VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC SYSTEM COLOR TV

TB1229DN that is a signal processing IC for the PAL / NTSC color TV system integrates video, chroma and synchronizing signal processing circuits together in a 56-pin shrink DIP plastic package.

FEATURES

Video section

Built-in trap filter

Black expansion circuit

Variable DC regeneration rate

Y delay line

Sharpness control by aperture control

γ correction

Chroma section

Built-in 1H Delay circuit

PAL base band demodulation system

One crystal color demodulation circuit (4.43MHz, 3.58MHz, M / N-PAL)

Automatic system discrimination, system forced mode

1H delay line also serves as comb filter in NTSC demodulation

Built-in band-pass filter

Color limiter circuit

Synchronizing deflecting section

Built-in horizontal VCO resonator

Adjustment-free horizontal / vertical oscillation by count-down circuit

Double AFC circuit

Vertical frequency automatic discrimination circuit

Horizontal / vertical holding adjustment

Vertical ramp output

Vertical amplitude adjustment

Vertical linearity / S-shaped curve adjustment

Text section

Linear RGB input

OSD RGB input

Cut / off-drive adjustment

RGB primary signal output