©2004-2007 Copyright by AverLogic Technologies, Corp.
1
1.
Introduction
1.1. Introduction
AL320C is an Analog LCD Display Controller which is a combination of a multi-
channel analog preprocessing circuit including source selection, anti-aliasing filter
and ADC, ACC (Auto-Clamp Control) and AGC (Auto-Gain Control), CGC (Clock
Generation Circuit), digital multi-standard decoder containing chrominance and
luminance separation by an adaptive 2D comb filter, a brightness, contrast, hue and
saturation control circuit, programmable horizontal and vertical scalar, image and
sharpness enhancement processing, On-Screen-Display, programmable Tcon and 3-
Channel DAC outputs, etc.
1.2. Product Overview
Analog Input:
1. Support multiple analog video inputs
2. Support Composite Video, S-Video & YPbPr inputs
3. Built-in 10bit ADC, AGC & ACC
4. Support Auto Multi-Standard NTSC/PAL/SECAM mode detection
5. Adaptive 2D Comb-Filter video decoding for Y/C separation
Digital Input:
6. Support ITU-R BT-656 Digital Input
Video Processing & Scalar:
7. Closed Caption/V-Chip/WSS/WSS-J VBI decoding
8. Macrovision copy protection detection
9. Contrast/Brightness/Hue/Saturation
adjustment
10. Sharpness adjustment for Edge Enhancement
11. YCbCr to RGB Color Space Conversion
12. Programmable H/V Up & Down Scaling
13. 4:3 to/from 16:9 conversion
14. Programmable 3-Channel Gamma Correction
OSD
15. Built-in internal OSD 4K bytes RAM for programmable OSD function
16. Support up to
8
OSD colors
17. Support OSD Blinking & Blending
