Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-07-31
1992-05-05
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358180, 358188, H04N 5262, H04N 544, H04N 545, H04N 5265
Patent
active
051112973
ABSTRACT:
A double-scanning non-interlaced television receiver performs scanning line interpolation by using a memory to reproduce a 1/60 second frame with 525 scanning lines. The receiver has a picture-in-picture (P-in-P) function which inserts a frame (sub-picture) into a part of another frame (main picture). The receiver is provided with a signal processing circuit for implementing the scanning line interpolation and a memory having a frame-wide capacity for producing a sub-picture. The receiver (1) produces a video signal for the main scanning line and a video signal for the interpolated scanning line for the main picture and a video signal for the main scanning line and a video signal for the interpellated scanning line for the sub-picture and (2) performs a double-scanning conversion, thereby providing a sub-picture without causing line flicker.
REFERENCES:
patent: 4724487 (1988-02-01), Casey
patent: 4816915 (1989-03-01), Imai et al.
patent: 4930014 (1990-05-01), Maeda et al.
Toshiba Review, "Digital Television with Enhanced Picture Quality," vol. 42, No. 12, pp. 892-895, Dec. 1, 1987.
Imai Kiyoshi
Ishizu Atsushi
Tsuji Toshiaki
Burgess Glenton B.
Groody James J.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Picture-in-picture double-scanning television receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Picture-in-picture double-scanning television receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Picture-in-picture double-scanning television receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1416886