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DEVICE AND METHOD FOR PROVIDING EXPANSION-DECODED LOW- RESOLUTION VIDEO SIGNAL FROM ENCODED HIGH-DEFINITION VIDEO SIGNAL
DEVICE AND METHOD FOR PROVIDING EXPANSION-DECODED LOW- RESOLUTION VIDEO SIGNAL FROM ENCODED HIGH-DEFINITION VIDEO SIGNAL
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机译:从编码的高清晰度视频信号提供扩展解码的低分辨率视频信号的装置和方法
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摘要
PROBLEM TO BE SOLVED: To provide the second decoder of reduced resolution suitable for providing intra-picture image display in real time from a received encoded high-definition video signal by using the block of a pixel value expressing image data with intermediate third resolution lower than first resolution and higher than the second reduced resolution by a motion compensation unit processor. SOLUTION: In response to an input encoded HD MPEG data stream, a variable length decoder 100 supplies first and second MPEG data outputs to a PIP decode means 102 and an HD decode means 104. Concerning the input to the HD decode means 104, encoded image information defined by respective continuous 88 blocks of a quantized discrete cosine transform(DCT) coefficient is conveyed. Concerning the input to the PIP decode means 102, only encoded image information limited by a comparatively small prescribed number limited to a low frequency is conveyed by respective continuous 88 blocks of the quantized DCT coefficient.
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