CRT video display device with automatically adjustable scanning

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

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358146, 358230, H04N 708, H04N 712

Patent

active

048644056

ABSTRACT:
A cathode ray tube video display device is adapted to display wide aspect ratio signals by reducing the vertical scanning amplitude of the scanning raster. The scan is collapsed in the vertical direction without reducing the number of lines used to display the active picture, leaving unscanned bands at the top and bottom of the display. The device can change between a normal raster scanning mode and such a collapsed wide screen mode automatically in response to an indicator in the received video signal.

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patent: 4713685 (1987-12-01), Nishimura
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Rank Cintel Mk IIIC Telecine, Drawing excerpt from vol. 2, Part 1, Servicing Information, (1 Circuit Diagram entitled "Tube Control System", (undated, but published in 1981).
Handbook, Medford DU6 Series, PAL Colour Monitor, Mar., 1986.
Designs Department Handbook No. 7.336 (86), BBC Design Department, Engineering Division, Sheets 4, 5, 20, 25, 26, 29, 40, 41, (undated, but published on Jun. 25, 1986).

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