Selectable raster size for video display

Details Selectable raster size for video display Selectable raster size for video display

1987-10-09

1988-08-09

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 77, 358243, H04N 563

Patent

active

047631945

ABSTRACT:
Size control circuitry allows the selection of a number of different combinations of raster heights and widths for a video display apparatus. A raster size selection signal is decoded to determine one of a number of possible height and width combinations. The height is determined by varying the vertical size feedback signal to the vertical deflection circuits. The raster width is determined by varying the operation of a side pincushion correcting diode modulator circuit.

REFERENCES:
patent: 3235767 (1966-02-01), Bahring
patent: 3908083 (1975-09-01), Hiraki et al.
patent: 4028726 (1977-07-01), Argy
patent: 4254365 (1981-03-01), Knight
patent: 4385324 (1983-05-01), Shioda et al.
patent: 4394690 (1983-07-01), Kobayashi
patent: 4547708 (1985-10-01), Haferl

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