| 摘要 |
PURPOSE: A definition enhancement circuit of a time lapse VCR(Video Cassette Recorder) is provided to achieve high definition and contour enhancement by adopting a video signal processor control unit as a DSP(Digital Signal Processor) as well as using a wavelet for a compression engine. CONSTITUTION: A compressor(22) compresses video data decoded by a video decoder(21), in a wavelet method. A DSP(23) saves/reads the compressed video data of a memory(24) in a normal mode and performs enhancement of input video data in a specific frame through a frame memory(26). An extractor(25) extracts the compressed video data in a wavelet method. The frame memory saves a frame amount of video data from the extractor and saves a frame amount of enhancement-performed video data from the DSP. A video encoder(27) encodes the video data of the extractor in a normal mode and encodes the video data of the frame memory in an enhancement mode. Therefore, high definition of video data is obtained through enhancement of extracted low video data.
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