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