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