GENERAL DESCRIPTION

The Camera Digital Signal Processor (CAMDSP) is intended for use with a mosaic filter colour CCD. The IC generates luminance and chrominance signals from the CCD signal. The device consists of a luminance and colour separator employing two 768 × 9 line memories, a PAL/NTSC encoder, a dual 8-bit video DAC, a Sync Signal Generator (SSG) and a simple serial interface to control many settings.

FEATURES

? Y/C separator for mosaic filter colour CCD which can be used with PAL or NTSC CCDs with horizontal resolution of 510, 670, 720 or 768 pixels

? Line sequential colour processing (R?Y) and (B?Y)

? 9 bit input signal (the internal processing is 10-bit)

? Digital feedback clamp control for Y/C separation

? Two 768 × 9 line memories for Y/C separation

? Aperture correction using phase linear filters

? Coring of LOW level signals to reduce noise

? Colour encoder in accordance with the PAL or NTSC system. Colour subcarrier is made by a discrete time oscillator (DTO) operating on system clock

? Slew rate controlled outputs for reduction of digital noise

? RGB inputs for title mix

? High accuracy 8 bit DAC outputs for luminance and chrominance signals

? Sync Signal Generator (SSG) to generate all necessary timing signals

? Serial interface for microprocessor control of CAMDSP settings

? Y and C signals accessible to incorporate digital features

? Including digital feature functions (mosaic, sepia, solarization, slice and negative/positive inversion).