Electronic switch matrix for a video display system

Details Electronic switch matrix for a video display system Electronic switch matrix for a video display system

1990-04-03

1992-08-11

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340766, 340814, 355140, G09G 334

Patent

active

051383098

ABSTRACT:
An electronic switch matrix for a video projection system has a plurality of switch elements, each of which is associated with a respective one of the display pixels in a MxN array. A first counter, in response to a pixel clock and the horizontal sync signal, provides the column timing for activating the switch elements. Similarly, a second counter, in response to a row block and the vertical sync signal, provides the row timing for activating the switch elements. A switch element activated simultaneously by each counter then couples the luminance signal to a video display circuit element for developing the appropriate pixel intensity.

REFERENCES:
patent: 4626837 (1986-12-01), Priestly
patent: 4716403 (1987-12-01), Morozumi
patent: 4978952 (1990-12-01), Irwin

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