Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1994-06-03
1997-07-15
Britton, Howard W.
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 68, H04N 5783, H04N 592
Patent
active
056490470
ABSTRACT:
The picture reproduction apparatus of this invention reproduces compressed image data which has been compressed using inter-frame encoding, extracts a header from the reproduced image data, taking out intra-frame encoded image data using the information of the header. Invalid data is added to the image data other than the intra-frame encoded data. The image data is output into a picture decoding apparatus, so as to obtain a reproduced video image during playback in fast forward and fast reverse. Alternatively, valid image data is detected from the reproduced image data. In the slow playback at a 1/N speed, M (<N) frames of valid image data and (N-1)*M frames of invalid image data are output in order to obtain a slow image output.
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E. Takakura et al., "Study on Image Qualiy Reproduced at Variable Speeds by Digital VCR", Extended Abstracts; The Annual Meeting of the Institute of Television Engineers, pp. 93-94 (1992) (partial English translation provided).
"Information technology--Coding of moving pictures and associated audio for digital storage Media up to about 1,5 Mbit/s", Draft International Standard ISO/IEC/DIS 11172, p. 61, (1992).
Bannai Tatsushi
Takahashi Toshiya
Britton Howard W.
Matsushita Electric - Industrial Co., Ltd.
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