| 摘要 |
Disclosed is a high-speed image compression apparatus using a last non-zero detection circuit. A memory stores data corresponding to a result of a quantization operation that quantizes an input. A last non-zero searcher connected to the memory searches for a last non-zero position while the quantization result data is written to the memory, and outputs last non-zero position data. A VLC (Variable Length Coder) finds a pattern from the quantization result data and the last non-zero position data, searches for a variable length code mapped to the pattern, packs the variable length code in a unit of a word, and outputs a compressed stream. The high-speed image compression apparatus can reduce a variable length coding time and can rapidly operate the overall compression system according to a reduced variable length coding time, thereby increasing a frame rate. |
