Laurin G Blacken

46911448, Sep 1, 1987

Jan 22, 1986

6/821464

Christopher N. King - Portland OR
Brian J. Dolinar - Lake Oswego OR
William A. Barrow - Beaverton OR
Robert T. Flegal - Beaverton OR
Paul E. Gulick - Beaverton OR
Laurin G. Blacken - Wilsonville OR

Planar Systems, Inc. - Beaverton OR

G09G 330

3151693

A TFEL panel includes orthogonally disposed sets of scanning and data electrodes. The scanning electrodes are strobed with a preconditioning voltage and data is provided to selected data electrodes simultaneously with the line by line strobing of the scanning electrodes. A refresh pulse is applied to the screen once per frame of data at times which vary from frame to frame. This may be accomplished either by varying the time of occurrence of the refresh pulse within each frame or by holding the time of occurrence of the refresh pulse constant and varying the strobing sequence of the scanning electrodes. This technique prevents certain portions of the screen from generating a latent image due to charge accumulation which would otherwise result from the timing asymmetry between the scanning of certain electrodes and the fixed timing of the refresh pulse.

50620576, Oct 29, 1991

Dec 9, 1988

7/282472

Laurin G. Blacken - Wilsonville OR
James D. Berry - Portland OR

E-Machines Incorporated - Beaverton OR

G06F 1562

364518

A computer display controller (50) cooperates with a host microprocessor (18) to direct display data to a frame buffer memory (16) in accordance with a selected one of multiple frame buffer memory configurations (20 and 30). The display controller includes an address decoder circuit (58) that delivers address information generated by the host microprocessor to the address inputs (64) of the frame buffer memory in accordance with the selected frame buffer memory configuration.