Television – Bandwidth reduction system – Data rate reduction
Patent
1995-10-18
1997-11-18
Au, Amelia
Television
Bandwidth reduction system
Data rate reduction
348419, 348416, 348405, H04N 1718
Patent
active
056893078
ABSTRACT:
Moving picture coding system for coding a series of moving pictures including current and preceding pictures in an intra-picture and inter-picture prediction coding scheme, has a coding device for producing and transmitting coded data of moving pictures, a memory device for storing the coded data, and a detecting device for detecting excess from a predetermined transmission rate of the coded data to be transmitted. When the excess is detected, coded data of the current picture is skipped, but skip information is transmitted instead, and when the skipped current picture falls into a prediction reference picture for a subsequently coded picture, the preceding picture which is not skipped undergoes a prediction coding for transmission. In the decoding system for decoding the coded data, when the skip information is detected, one of non-skipped pictures adjacent to the current picture is outputted, and when the skipped picture falls into a prediction reference picture for a subsequently coded picture at a timing of coding, the preceding picture is used for prediction decoding in the decoding system.
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ISO/IEC CD 11172-2 1993 (E) 2-11172 rev 1 "Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to about 1.5 Mbit/s".
Ando Ichiro
Sugahara Takayuki
Au Amelia
Meller Michael N.
Rao Anand
Victor Company of Japan Ltd.
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