Title :
A programmable video codec system for low-bit-rate communication
Author :
Matsuo, Masatoshi ; Fujimoto, Hitoshi ; Kohashi, Yasuo ; Toujima, Masayoshi ; Yonezawa, Tomonori ; Kurohmaru, Shun-ichi ; Okamoto, Kiyoshi ; Lizuka, Yasuo ; Nakajima, Hiromasa ; Inoue, Hisashi ; Iwasaki, Shiro ; Michiyama, Junji
Author_Institution :
Div. of Corp. Semicond. Dev., Matsushita Electr. Ind. Co. Ltd., Japan
fDate :
8/1/1997 12:00:00 AM
Abstract :
We have developed a programmable video codec system using a video codec DSP called VDSP1 X for low-bit-rate communication which performs realtime encoding and decoding using discrete cosine transform (DCT)-based algorithms, such as ITU-T H.261, H.263, and wavelet-based subband encoding algorithms. This system realizes real time encoding and decoding for QCIF frame sizes for both DCT-based algorithms and wavelet-based subband encoding algorithms in the same environment
Keywords :
decoding; digital signal processing chips; discrete cosine transforms; telecommunication standards; transform coding; video codecs; video coding; visual communication; wavelet transforms; DCT-based algorithms; ITU-T H.261; ITU-T H.263; QCIF frame sizes; VDSP1 X; decoding; discrete cosine transform based algorithms; low-bit-rate communication; programmable video codec system; real time encoding; video codec DSP; wavelet-based subband encoding algorithms; Communication networks; Communication standards; Decoding; Digital signal processing; Discrete cosine transforms; Image coding; Semiconductor device noise; Telephony; Video codecs; Video compression;
Journal_Title :
Consumer Electronics, IEEE Transactions on
