A single-chip MPEG2 422@ML video, audio, and system encoder with a 162-MHz media-processor and dual motion estimation cores
Satoshi Kumaki, Tetsuya Matsumura, Kazuya Ishihara, Hiroshi Segawa, K. Kawamoto, Hideo Ohira, Toshiaki Shimada, Hidenori Sato, Takashi Hattori, Tetsuro Wada, Hiroshi Honma, Tetsuya Watanabe, Hisakazu Sato, Kenichi Asano, Toyohiko Yoshida · 1999
A single chip MPEG2 video, audio, and system encoder for various applications such as PC authoring, DVD-recorder and digital TV has been described. It performs real-time 422@ML video encoding, Dolby Digital (AC-3)/MPEG1 audio encoding, and system encoding which multiplexes the video and audio streams and generates a transport stream or a program stream. The encoder LSI employs an advanced hybrid architecture with a 162-MHz media-processor and dedicated video processing hardware. This architecture not only realizes a complete encoder but also achieves the high flexibility required for improving picture quality. Dual motion estimation cores, fine ME for high search precision and coarse ME for a wide search range, are integrated for optimal motion vector search. The encoder LSI is implemented using 0.25 micron four-metal CMOS technology and integrates 11 million transistors in an area of 14.2/spl times/14.2 mm/sup 2/.