Title :
A DSP for DCT-based and wavelet-based video codecs for consumer applications
Author :
Okamoto, Kiyoshi ; Jinbo, Takuya ; Araki, Toshiyuki ; Iizuka, Yasuo ; Nakajima, Hiromasa ; Takahata, Minoru ; Inoue, Hisashi ; Kurohmaru, Shun-ichi ; Yonezawa, Tomonori ; Aono, Kunitoshi
Author_Institution :
Semicond. Res. Center, Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
fDate :
3/1/1997 12:00:00 AM
Abstract :
We have developed a video digital signal processor (VDSP1) which performs real-time encoding and decoding for discrete cosine transform- (DCT-) based algorithms such as ITU-T H.261, H.263 and wavelet-based subband encoding algorithms. This LSI is suitable for consumer applications, as it was implemented using 0.5 μm CMOS process technology to realize compactness (one million transistors on 65 mm2) and low power (maximum: 560 mW). It features a processing unit which performs wavelet filtering at high speeds, a compact DCT circuit, and a fast, flexible DRAM interface for low-cost systems. At 40 MHz, a single chip is capable of processing quarter common intermediate format (QCIF) (176×144 pixels) size pictures at a rate greater than 15 frames/s
Keywords :
CMOS digital integrated circuits; consumer electronics; decoding; digital signal processing chips; discrete cosine transforms; real-time systems; telecommunication computing; video codecs; video coding; wavelet transforms; 0.5 micron; 144 pixel; 176 pixel; 40 MHz; 560 mW; CMOS process technology; DCT-based video codecs; ITU-T H.261; ITU-T H.263; LSI; VDSP1; consumer applications; discrete cosine transform; flexible DRAM interface; low power operation; low-cost systems; real-time decoding; real-time encoding; video DSP chip; video digital signal processor; wavelet filtering; wavelet-based subband encoding algorithms; wavelet-based video codecs; CMOS process; CMOS technology; Decoding; Digital signal processing; Digital signal processors; Discrete wavelet transforms; Encoding; Large scale integration; Signal processing algorithms; Video codecs;
Journal_Title :
Solid-State Circuits, IEEE Journal of
