Pulse width modulation for spatial light modulator with split re

Details Pulse width modulation for spatial light modulator with split re Pulse width modulation for spatial light modulator with split re

1994-06-13

1996-03-05

Weldon, Ulysses

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345108, G09G 334

Patent

active

054971721

ABSTRACT:
A method of implementing pulse-width modulated image display systems (10, 20) with a spatial light modulator (SLM) (15) configured for split-reset addressing. Display frame periods are divided into time slices. Each frame of data is divided into bit-planes, each bit-plane having one bit of data for each pixel element and representing a bit weight of the intensity value to be displayed by that pixel element. Each bit-plane has a display time corresponding to a number of time slices, with bit-planes of higher bit weights being displayed for more time slices. The bit-planes are further formatted into reset groups, each reset group corresponding to a reset group of the SLM (15). The display times for reset groups of more significant bits are segmented so that the data can be displayed in segments rather than for a continuous time. During loading, segments of corresponding bit-planes are temporally aligned from one reset group to the next. The display times for less significant bits are not segmented but are temporally aligned to the extent possible without loading conflicts.

REFERENCES:
patent: 5079544 (1992-01-01), Demond et al.
patent: 5185602 (1993-02-01), Bassetti, Jr. et al.
patent: 5245328 (1993-09-01), Garrett
patent: 5280277 (1994-01-01), Hornbeck
patent: 5313224 (1994-05-01), Singhal et al.

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