High resolution color television

Details High resolution color television High resolution color television

1984-06-22

1987-12-01

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, H04N 1106

Patent

active

047107995

ABSTRACT:
The information signal for a green camera tube modulated to scan each line in an undulating path is sampled by a filter trap at the frequency of modulation in a narrow band (about .+-.1/2 MHz) and combined with the red and blue camera tube signals in the same proportion that each contributes to the total luminance relative to the green information signal thereby pseudomodulating the red and blue camera tube information signals. Although it is preferable to do this at the camera, thereby having to do it only once for the television transmission system, it may be done at the display tube. This modulation of the green tube scan, and pseudomodulation of the red and blue tube scan not only increases resolution for color television but also eliminated aliasing because the scan of all color camera tubes is effectively undulating so that there can be no scan parallel to horizontal edges of an image that causes aliasing in normal interlaced field of scan lines that are straight horizontal lines.

REFERENCES:
patent: 4521803 (1985-06-01), Gittinger

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