Scanconverter system with superimposing apparatus

Details Scanconverter system with superimposing apparatus Scanconverter system with superimposing apparatus

1989-06-29

1990-06-19

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358183, H04N 701

Patent

active

049358154

ABSTRACT:
A scanconverter system with a superimposing apparatus for converting an interlaced video signal to a non-interlaced video signal and forming desired image data by superimposing a computer-generated image on another image reproduced from a laser disc or the like. The system comprises a write clock generator for generating a write clock of a predetermined frequency, a read clock generator for generating a read clock of a double frequency, a line memory unit for storing a horizontal line of an interlaced digital video signal and outputting a first non-interlaced digital video signal, a frame memory unit for storing a frame of the interlaced digital video signal and outputting a second non-interlaced digital video signal, a detector for detecting whether the interlaced digital video signal represents a still picture or not, and a selector for selecting one of the first and second non-interlaced digital video signals according to the output of the detector. Selection of the first or second non-interlaced digital video signal depends on whether the interlaced digital video signal represents a still picture or not.

REFERENCES:
patent: 4272787 (1981-06-01), Michael et al.
patent: 4400719 (1983-08-01), Powers
patent: 4403250 (1983-09-01), Kellar
patent: 4698676 (1987-10-01), Kubota et al.

Affiliated with

Also associated with

Rating

Scanconverter system with superimposing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scanconverter system with superimposing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanconverter system with superimposing apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2263713