Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-10-20
1991-01-08
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 40, H04N 978
Patent
active
049840690
ABSTRACT:
In a YC separator for generating a chrominance signal C including no chrominance separation error by selecting a second highest potential signal of the first chrominance signal a, the second chrominance signal c' including a separation error and a reference signal, only when a picture having two different colors at a border between n-th line and (n-1)th line is displayed, a correction value of 1/2 is generated as the reference signal, in order to obtain C=1 and Y=0 for prevention of n-th line dot crawl. Further, when a vertical stripe picture (black and white lines are alternately arranged) is displayed, a chrominance signal Cc including much less unnecessary signal components can be obtained through an arithmetic circuit and on the basis of a chrominance signal Cc' including error components and an average signal D between the past and future line chrominance signals A and C, in order to eliminate cross-color at the upper and lower ends of the picture and Yc signal blur.
REFERENCES:
patent: 4345268 (1982-08-01), Clarke
patent: 4688080 (1987-08-01), Wagner
patent: 4703342 (1987-10-01), Takahashi
patent: 4907073 (1990-03-01), Sugiyama
patent: 4916527 (1990-04-01), Matsuo
European Search Report: EP 88 30 9897.
Matsuo Yasutoshi
Yamada Hiroshi
Chin Tommy P.
Victor Company of Japan Ltd.
LandOfFree
YC separator for video signal processing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with YC separator for video signal processing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and YC separator for video signal processing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-939432