Progressive scan HDTV system

Details Progressive scan HDTV system Progressive scan HDTV system

1985-02-14

1986-09-09

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358150, H04N 701

Patent

active

046112251

ABSTRACT:
A timing signal generator applies timing signals to a wide aspect ratio (1.77:1) imager in a non-interlaced HDTV system for causing the imager video output signal to exhibit a line rate of 45,000 Hz and a field rate of 60 Hz such that at each step in post production conversion of the video signal to a lower definition distribution standard the conversion equipment operates in a line locked mode thereby ensuring that fractional pixels are not produced during the conversion steps and greatly simplifying the timing of such functions as line-rate, frame-rate and aspect-ratio conversions.

REFERENCES:
patent: 3617626 (1971-11-01), Bluth et al.
patent: 4275422 (1981-06-01), LeCouteur
"R&D on High-Definition Television in Japan", Hayashi, pp. 178-186; Society of Motion Picture & T.V. Engineers, Jul. 1980.
S. Kiver, "Color Television Fundamentals", McGraw-Hill, 1964, pp. 37-39.
"A Proposed Strawman HDTV Origination Standard," W. Fagot, K. Powers contribution to ATSC Technology Group on HDTV, Oct. 15, 1984.

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