Color imaging apparatus having a 1:2 frequency ratio between vid

Details Color imaging apparatus having a 1:2 frequency ratio between vid Color imaging apparatus having a 1:2 frequency ratio between vid

1985-10-03

1987-09-01

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 25, H04N 907

Patent

active

046912274

ABSTRACT:
In a single-tube color image pickup apparatus, an optical image is passed through a color stripe filter having recurrent groups of different color stripes to a photoelectrical conversion target, which is scanned by an electron beam to generate a video signal comprising a carrier having a frequency inversely proportional to the intervals at which the recurrent groups of filter strips are arranged. The carrier is modulated in phase with the stripes of each group and in amplitude with the intensity of the optical image. Prior to operation, the target is uniformly illuminated with light of a predetermined color to generate the carrier, which is stored into a field memory. During operation the memory is repeatedly addressed to generate a reference signal. The frequency of the reference signal is converted so that the video signal and the frequency-converted reference signal have a frequency ratio of 1:2 and an opposite phase relationship therebetween. A color demodulator receives these signals to derive a pair of color component signals for coupling to a matrix circuit to which a luminance component is also applied.

REFERENCES:
patent: 4041528 (1977-08-01), Miyoshi

Affiliated with

Also associated with

Rating

Color imaging apparatus having a 1:2 frequency ratio between vid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color imaging apparatus having a 1:2 frequency ratio between vid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color imaging apparatus having a 1:2 frequency ratio between vid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1267780