Title:
DIGITAL VIDEO TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO1989003157
Kind Code:
A3
Abstract:
A full motion color digital video signal is compressed, formatted for transmission, recorded on compact disc media and decoded at conventional video frame rates. During compression, regions of a frame are individually analyzed to select optimum fill coding methods specific to each region. Region decoding time estimates are made to optimize compression thresholds. Region descriptive codes conveying the size and locations of the regions are grouped together in a first segment of a data stream. Region fill codes conveying pixel amplitude indications for the regions are grouped together according to fill code type and placed in other segments of the data stream. The data stream segments are individually variable length coded according to their respective statistical distributions and formatted to form data frames. The number of bytes per frame is dithered by the addition of auxiliary data determined by a reverse frame sequence analysis to provide an average number selected to minimize pauses of the compact disc during playback thereby avoiding unpredictable seek mode latency periods characteristic of compact discs. A decoder includes a variable length decoder responsive to statistical information in the code stream for separately variable length decoding individual segments of the data stream. Region location data is derived from region descriptive data and applied with region fill codes to a plurality of regions specific decoders selected by detection of the fill code type (e.g., relative, absolute, dyad and DPCM) and decoded region pixels are stored in a bit map for subsequent display.
Inventors:
WAN SUZ HSI (US)
SIMON ALLEN HENRY (US)
GOLIN STUART JAY (US)
ASTLE BRIAN (US)
KEITH JOHN MICHAEL (US)
SIMON ALLEN HENRY (US)
GOLIN STUART JAY (US)
ASTLE BRIAN (US)
KEITH JOHN MICHAEL (US)
Application Number:
PCT/US1988/003327
Publication Date:
July 13, 1989
Filing Date:
September 29, 1988
Export Citation:
Assignee:
TECHNOLOGY INC 64 (US)
International Classes:
G11B27/034; G11B27/10; H04N1/41; H04N5/92; H04N5/926; H04N7/24; H04N7/26; H04N7/36; H04N9/804; H04N9/806; H04N9/808; H04N9/82; H04N11/04; H04N5/85; (IPC1-7): H04N9/80; H04N7/137
Domestic Patent References:
| WO1986004757A1 | 1986-08-14 |
Foreign References:
| US4396906A | 1983-08-02 | |||
| US4542411A | 1985-09-17 | |||
| DE3437182A1 | 1986-04-10 | |||
| US4520401A | 1985-05-28 | |||
| US4129882A | 1978-12-12 |
Other References:
IEEE Transactions on Communications, volume COM-29, no. 12, December 1981, IEEE, (New York, US), K. Matsui et al.: "High-speed transmission of sequential freeze-pictures by extracting changed areas", pages 1977-1981
SPIE, "nd Int. Techn. Sympos. on Optical and Electro-Optical appl. Science and Engineering, volume 594, Image Coding, December 1985, G. Kummerfeldt et al.: "Coding television signals at 320 and 64 kbits/s", pages 119-128
IEEE Journal of Selected Areas in Communications, volume SAC-5, no. 7, August 1987, IEEE, (New York, US), T. Koga et al.: "Entropy coding for a hybrid scheme with motion compensation in subprimary rate video transmission", pages 1166-1174
IEEE Transactions on Communications, volume COM-26, no. 10, October 1978, IEEE, (New York, US), K. Sawada et al.: "32 Mbit/s trans-mission of NTSC color TV signals by composite DPCM coding", pages 1432-1439
Sixth International Conference on Digital Satellite Communications, 19-23 September 1983, Phoenix, Arizona, IEEE, (US), R.C. Nicol et al.: "A codec system for worldwide videoconferencing", pages VII-A-9 - VII-A-16 see figures 1-5
SPIE, "nd Int. Techn. Sympos. on Optical and Electro-Optical appl. Science and Engineering, volume 594, Image Coding, December 1985, G. Kummerfeldt et al.: "Coding television signals at 320 and 64 kbits/s", pages 119-128
IEEE Journal of Selected Areas in Communications, volume SAC-5, no. 7, August 1987, IEEE, (New York, US), T. Koga et al.: "Entropy coding for a hybrid scheme with motion compensation in subprimary rate video transmission", pages 1166-1174
IEEE Transactions on Communications, volume COM-26, no. 10, October 1978, IEEE, (New York, US), K. Sawada et al.: "32 Mbit/s trans-mission of NTSC color TV signals by composite DPCM coding", pages 1432-1439
Sixth International Conference on Digital Satellite Communications, 19-23 September 1983, Phoenix, Arizona, IEEE, (US), R.C. Nicol et al.: "A codec system for worldwide videoconferencing", pages VII-A-9 - VII-A-16 see figures 1-5
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