An area efficient video/audio codec for portable multimedia application

In this paper, we present an area efficient video and audio single chip encoder/decoder for portable multimedia application. The single-chip called as VASP (Video Audio Signal Processor) consists of a video signal processing block and an audio signal processing block. This chip has a mixed hardware/software architecture to combine performance and flexibility. The video signal processing block was designed to implement hardwired solution of pixel input/output, full pixel motion estimation, half pixel motion estimation, discrete cosine transform, quantization, run length coding, host interface, and 16 bit RISC type internal controller. The audio signal processing block is implemented with a software solution using 16 bit fixed point DSP. This chip contains 142,300 gates, 22 kbits FIFO, 107 kbits SRAM, and 556 kbits ROM, and the chip size was 9.02 mm×9.06 mm which was fabricated using 0.5 micron 3-layers metal CMOS technology