Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-05-01
1992-06-30
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 16, 358314, H04N 1110, H04N 988
Patent
active
051268353
ABSTRACT:
Dropout is compensated in a video signal that has samples comprising respective different color information components in alternate lines and samples comprising luminance information time multiplexed with the color samples in each line. Adders (78, 82) average first and second sample (S1, S2) positioned one line after and one line before a central reference sample SR to produce a first averaged sample SA1, and third and fourth samples (S3, S4) positioned two lines after and two lines before the sample SR to produce a second averaged sample SA2. Gating means (48 to 60) outputs any one of the sample SR, the averaged samples and the first to fourth samples. An error detector (42) is responsive to error information ER for the sample SR indicating no dropout to cause the sampe SR to be output, and is responsive to the error information ER indicating dropout, and to timing information indicating whether the sample SR comprises color or luminance, to effect dropout compensation by causing another sample to be output in place of the sample SR in accordance with the algorithm set forth below, in which En represents the error information for the (n)th sample, En=0 means that there is no dropout for the (n)th sample, S=Y means that the sample SR comprises luminance, and S=C means that the sample SR comprises color:
REFERENCES:
patent: 3843457 (1989-06-01), Yamagata
patent: 4122489 (1983-10-01), Bolger et al.
patent: 4250521 (1981-02-01), Wright
patent: 4329708 (1987-05-01), Yamamoto et al.
patent: 4368483 (1983-01-01), Liu
patent: 4464474 (1984-08-01), Schulz et al.
patent: 4490748 (1984-12-01), Kamath
patent: 4517600 (1985-05-01), Reitmeier
patent: 4630131 (1986-12-01), Ichinoi et al.
patent: 4796085 (1989-01-01), Shinada
Britton Howard W.
Frommer William S.
Murrell Jeffrey S.
Sinderbrand Alvin
Sony Broadcast & Communications Limited
LandOfFree
Method and apparatus for video signal dropout compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for video signal dropout compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for video signal dropout compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1868850