Colour display apparatus

Details Colour display apparatus Colour display apparatus

Filed on

1974-11-20

Date issued

1976-03-16

Examiner

Trafton, David L.

Patent Class

Communications: electrical

SubClass

Systems

SubSubClass

Portable self-contained

Other Related Categories

358 13, G06F 314

Type

Patent

Status

active

Patent number

039449998

Description

ABSTRACT:
A Colour Display Apparatus comprises a three-gun cathode ray tube modulated by an input video signal from a digital computer. The video signal contains digital colour codes in the portions of the signal which correspond to blank spaces in the display (e.g. spaces between rows of characters). These codes are stored in a circulating shift and are used to gate the video input to the appropriate combination of guns to produce the required colour for each symbol.

REFERENCES:
patent: 3603962 (1971-09-01), Lechner
patent: 3624634 (1971-11-01), Clark
patent: 3659283 (1972-04-01), Ophir
patent: 3685038 (1972-08-01), Flanagan
patent: 3720780 (1973-03-01), Remy et al.
patent: 3771155 (1973-11-01), Hayashi et al.
patent: 3854130 (1974-12-01), Ligocki

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