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1993
Conference Paper
Titel
Hardware codec for digital HDTV recording
Abstract
For the recording of HDTV signals (EUREKA standard, 1250/50/2:1) a codec has been realized which can reduce the initial data rate from 1.152 GBit/s to one-fifth. According to the desired reduction, the playtime of a digital VCR (Video Cassette Recorder) can be increased from about 40-60 minutes to at least the length of a feature film. This paper describes the hardware realization of the data rate reduction codec. Algorithms utilized are adaptive interframe/intrafield discrete cosine transform (DCT), adaptive quantization and variable length encoding (VLC). Interframe editing, multiple copy and shuttle mode are supported by a special code architecture.
Language
English
Tags
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codecs
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data compression
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discrete cosine transforms
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high definition television
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image coding
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video recording
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interframe editing
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digital HDTV recording
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hardware realization
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data rate reduction
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adaptive interframe/intrafield discrete cosine transform
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dct
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adaptive quantization
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variable length encoding
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vlc
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multiple copy
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shuttle mode
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code architecture