Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-11-05
1992-06-09
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358133, 358142, H04N 704
Patent
active
051212056
ABSTRACT:
A system for synchronizing first and second video signals which are to be combined is disclosed. The second signal is data compressed digital signal containing macro blocks of composite data preceded by a field sync flag synchronized with the field rate of the first signal. Each macro block contains a video block including a plurality of image line blocks. Each line block contains multiplexed video data such as luminance and chrominance information preceded by a marker flag. The flag preceding the first line block in a video block is a field flag which identifies the beginning of a scanning field associated with that video block. The flags preceding other line blocks in that video block identify the other line blocks respectively. Each flag contains a unique data preamble which identifies the associated line block. Illustratively, field flag data includes unique header, field number, and "performance index" data for controlling data quantization. Line block flag data includes unique header, line block number and performance index data.
REFERENCES:
patent: 4866509 (1989-09-01), Guida
patent: 4888641 (1989-12-01), Isnardi et al.
patent: 5003377 (1991-03-01), Lippman et al.
patent: 5036391 (1991-07-01), Auvray et al.
Aartsen, G. et al., "Error Resilience of a Video Codec for Low Bitrates", Int. Conference on Acoustics, Speech, and Signal Processing, New York, Apr. 1988, pp. 1312-1315.
Underwood, E. M., "Broadcast-Quality Television 45 MBIT/SEC (DS3) Encoding Algorithm", SMPTE Journal, Sep. 1988, pp. 678-686.
Ghanbari, M., "Two-Layer Coding of Video Signals for VBR Networks", IEEE Journal on Selected Areas in Communications, vol. 7, No. 5, Jun. 1989, pp. 771-781.
Bertsekas, et al., Data Network, Prentice-Hall, p. 76 et seq.
Ng Sheau-Bao
White Hugh E.
General Electric Company
Herrmann Eric P.
Kostak Victor R.
Kurdyla Ronald H.
Tripoli Joseph S.
LandOfFree
Apparatus for synchronizing main and auxiliary video signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for synchronizing main and auxiliary video signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for synchronizing main and auxiliary video signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1808795