1 chip low power MPEG1 codec with compact motion estimation

Author

Ohtsubo, H. ; Fujihira, T. ; Asada, K. ; Imaide, T.

Author_Institution

Multimedia Syst. Res. & Dev. Div., Hitachi Ltd., Kanagawa, Japan

fYear

1997

fDate

2-4 Dec 1997

Firstpage

173

Lastpage

176

Abstract

We have developed a low power MPEG1/JPEG encode/decode single chip LSI (codec). On the development of the codec, we have developed a new compact motion estimation (ME) process which reduced the number of gates and the power consumption to about a quarter and 1/8 of those of the conventional ME process respectively, while keeping good quality of picture. With the new ME process and power management function all over the codec chip, we realized the low power consumption of the codec. Total power consumption of the codec is only 500 mW. With this chip, we have also realized the first digital camera with an MPEG1 stream in the world

Keywords

digital signal processing chips; large scale integration; motion estimation; video codecs; 0.5 micron; 1 chip low power MPEG-1 codec; 500 mW; compact motion estimation; digital camera; low power MPEG-1/JPEG encode/decode single chip LSI; power consumption; quality; Codecs; Decoding; Digital cameras; Discrete cosine transforms; Encoding; Energy consumption; Large scale integration; Motion estimation; Streaming media; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-4371-9

Type

conf

DOI

10.1109/ISCE.1997.658380

Filename

658380