A multi-standard video compact disk encoder with built-in on screen display

This paper describes a multi-standard Video Encoder chip for video compact disk (VCD) and digital video disk (DVD) applications. The chip converts 8-bit CCIR656 or CCIR601 inputs from digital video source into NTSC or PAL baseband TV signals in both S-video and CVBS composite video. A vertical filter is implemented on the chip which smooths the single field MPEG1 video to enhance the picture quality. This chip also contains on-screen display (OSD) circuitry that can display 10 rows by 25 columns of characters at the video output. The font can be changed through one layer metal mask change. This chip can be directly interface with most MPEG decoders and is therefore ideal for VCD applications. The chip was fabricated using 0.8-micron, double metal CMOS process and was functioning in the first silicon.