Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-06-16
1991-04-16
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, 358138, 358140, A04N 712
Patent
active
050087460
ABSTRACT:
A method and installation are provided for broadcasting high definition television programs, particularly for broadcasting HD-MAC programs on a narrow channel, while reducing degradation of the picture when received by a first generation MAC receiver. The signal obtained by analysis of the source picture is subjected to spatio-temporal subsampling and to non-linear motion compensation filtering, leading to transmitting the points representative of the same source frame over at least two successive transmission frames (t1, t2) and transmitting, at the same time, assistance data defining a motion vector field. To improve the compatible frame delivered by a first generation receiver, the second analysis field corresponding to the same source frame is subjected to time attenuation in the direction of motion. Such attenuation depends on the movement vector and leads to assigning to each point of said parts an intermediate position between its position in the analyzed source frame and its anticipated position in the direction of movement.
REFERENCES:
patent: 4551753 (1985-11-01), Nishizawa et al.
patent: 4743965 (1988-05-01), Yamada et al.
patent: 4745458 (1988-05-01), Hirano et al.
Bernard Philippe
Colaitis Marie-Jean
Centre National d'Etudes des Telecommunications
Kostak Victor R.
LandOfFree
High definition television signal processing including subsampli does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High definition television signal processing including subsampli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High definition television signal processing including subsampli will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-425275