Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-12-22
1998-03-03
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 98, 345 55, G09G 336
Patent
active
057240612
ABSTRACT:
A display driving apparatus includes a matrix display device for displaying an image. The matrix display device has switching elements and data written elements connected to the switching elements. The switching elements and the data written elements are arranged in rows and columns to form a matrix. A plurality of scan lines are arranged in a predetermined number of rows, with each row of the plurality of scan lines being connected to respective ones of the switching elements arranged along a corresponding row of the matrix. A plurality of data lines are connected to the switching elements for supplying lines of display data to be displayed on successive rows of the scan lines, and a data line driver circuit is connected to the switching elements via the data lines for supplying the switching elements connected to successive rows of the scan lines with the lines of display data. The data line driver circuit includes a shift register for receiving and shifting lines of display data supplied in serial thereto, and a latch circuit. The latch circuit successively receives lines of display data from the shift register, holds a previous line of received display data, and supplies the held previous line of display data to the switching elements connected to a successive row of the scan lines when the latch circuit does not receive a successive new line of display data from the shift register. A controller inhibits the shift register from receiving lines of display data corresponding to a predetermined number of successive rows of the scan lines.
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Casio Computer Co. Ltd.
Powell Mark R.
Suraci John
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