LC82103 Description
EN 5402 CMOS LSI LC82103 Image-Processing LSI for Facsimile, Copier, and OCR Applications Preliminaly Overview The LC82103 converts the analog video signal from the CCD contact image sensor into high-precision binary image data. The LC82103 includes an 8-bit A/D converter and two 6-bit D/A converters. The 6-bit D/A converters are used for setting reference potential (high and low) of the 8-bit A/D converter.
LC82103 Key Features
- Number of pixels processed: 3072 pixels/line
- Processing speed: 250 ns/pixel maximum (When CLKIN = 32 MHz)
- Built-in 8-bit A/D converter (with a sensor signal timing adjustment function)
- Built-in two 6-bit D/A converters for setting the A/D converter high and low reference potential
- Sensor drive circuit (supports CCDs and several CIS types)
- Digital clamping (single-point clamping, even/odd clamping)
- Distortion correction (white correction: all pixels, black correction: settable black correction subtracted data)
- γ correction (support user-defined curves: 8-bit data)
- Image area separation (characters, photographs, screened halftone areas)
- Simple binary coding process (fixed threshold, brightness adaptive threshold)