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

Volume

32

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

460

Lastpage

467

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;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.557649

Filename

557649