Title :
A 400 MPixel/s IDCT for HDTV by multibit coding and group symmetry
Author :
Jun Rim Choi ; Won Jun Hur ; Kyoung Keun Lee ; Ae Shin Kim
Author_Institution :
I.G. Electron. Res. Center, Seoul, South Korea
Abstract :
This inverse discrete cosine transform (IDCT) core provides motion-picture decompression at 400 MPixel/s for HDTV signals. The IDCT exploits the radix-two multibit coding and group symmetry of the matrix multiplication coefficients, to reduce the number of multiplications. It also features orthogonal memory to transpose the decompressed pixel data. The IDCT integrates 237k transistors, consumes 0.9 W at 3.3 V, and occupies 24 mm/sup 2/ in 0.6 /spl mu/m CMOS technology.
Keywords :
CMOS digital integrated circuits; data compression; digital signal processing chips; discrete cosine transforms; high definition television; matrix multiplication; telecommunication computing; video coding; 0.6 micron; 0.9 W; 3.3 V; CMOS technology; DSP chip; HDTV signals; IDCT; decompressed pixel data; group symmetry; inverse DCT; inverse discrete cosine transform; matrix multiplication coefficients; motion-picture decompression; orthogonal memory; radix-two multibit coding; CMOS technology; Clocks; HDTV; Image coding; Image processing; Memory architecture; Multiplexing; Read only memory; Signal processing; Signal processing algorithms;
Conference_Titel :
Solid-State Circuits Conference, 1997. Digest of Technical Papers. 43rd ISSCC., 1997 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3721-2
DOI :
10.1109/ISSCC.1997.585380
