OM8378
Description
The OM8373 and OM8378 combine the functions of a video processor together with a µ-Controller and US Closed Caption decoder. The ICs are intended to be used in economy television receivers with 110° picture tubes.
Key Features
- Vision IF circuit suitable for negative modulation with alignment-free PLL demodulator
- Internal (switchable) time-constant for the IF-AGC circuit
- The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted.
- Source selection between the ‘internal’ CVBS and an external CVBS or Y/C signal
- 1 external audio input.
- Integrated chrominance trap circuit
- Integrated luminance delay line with adjustable delay time
- Picture improvement features with peaking (with switchable centre frequency, depeaking, variable positive/negative overshoot ratio and video dependent coring), dynamic skin tone control and blue- and black stretching. All features are available for CVBS, Y/C and YPBPR signals.
- Tint control for all internal and external signals
- Integrated chroma band-pass filter with switchable centre frequency
