CRT display apparatus of raster scanning type

Details CRT display apparatus of raster scanning type CRT display apparatus of raster scanning type

1977-06-01

1979-04-10

Shaw, Gareth D.

Boots, shoes, and leggings

364200, G06F 314

Patent

active

041492641

ABSTRACT:
Disclosed is a CRT display apparatus of a raster scanning type which includes a microprocessor as a unit for data handling or processing in an input/output control part for controlling data transfer with a computer and/or keyboard, the operations of the microprocessor being controlled by a microprogram stored in a microprogram memory. A timing control unit or part for producing various timing signals for controlling displays is connected to the microprocessor through a data bus and an address bus so that control parameter for the various timing operations can be set through the microprogram. The timing control part comprises programmable control registers, counters for generating timing signals and coincidence detectors or comparators for detecting coincidence between the outputs from the control registers and the timing signals from the associated counters.

REFERENCES:
patent: 3886526 (1975-05-01), Smith
patent: 3916370 (1975-10-01), Neeley

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