Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1996-12-13
1999-10-19
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
345100, 345 98, 345197, G09G 500
Patent
active
059697130
ABSTRACT:
The drive circuit for a matrix-type display apparatus is a scanning driver for selecting one scanning electrode respectively for four selection periods, and displaying data of each bit for four bits in a pixel on the selected electrode. The scanning driver has four shift registers corresponding to four selection periods. To these shift registers, a clock having the width of four selection periods and a bit data indicating each bit are inputted. By the AND circuit, etc., a logical product of 15 shift signals from the shift register and four select signals is obtained, and using a signal of sum (logical OR) of the logical product, the ON/OFF of a selection voltage output switch and a non-selection voltage output switch is controlled. As a result, a drive circuit suited for the multiplex driving method can be achieved.
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Numao Takaji
Tomizawa Kazunari
Hjerpe Richard A.
Sharp Kabushiki Kaisha
The Secretary of State for Defence in Her Britannic Majesty's Go
Tran Henry N.
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