Kinescope blanking scheme for wide-aspect ratio television

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

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Details

315395, 313402, 313403, H04N 5223, H01J 2970, H01J 2980

Patent

active

045569061

ABSTRACT:
A wide-angle television system, such as one having 2:1 or 5:3 aspect ratios, provides N portions that exceed the limits of a conventional 4:3 aspect ratio picture in regions that are normally hidden from view in a conventional receiver. Further, a receiver is provided wherein the picture is changed from the wide-angle display to the standard display by collapsing the horizontal scanning only. In another arrangement standard definition kinescopes having aspect ratios of 4:3 are masked in a special manner to provide a 5:3 aspect ratio display which may be collapsed to provide a 4:3 standard aspect ratio pictures.

REFERENCES:
patent: 3097262 (1963-07-01), Ehrenhaft
patent: 3908083 (1975-09-01), Hiraki et al.
patent: 4028726 (1977-06-01), Argy
patent: 4385324 (1983-05-01), Shioda et al.
U.S. patent application Ser. No. 350,088 (Meise et al.) filed Feb. 18, 1982.

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