Spatial and temporal pulse width modulation method for image display

摘要

A method of controlling micromirrors of reset groups of a spatial light modulator (SLM) digital micromirror array is disclosed. In a first reset operation, the positions of a first subgroup of micromirrors of a reset group are set based on a first portion of a first bitplane and the positions of a second subgroup of micromirrors of the same reset group are set based on a first portion of a second bitplane. Then, in a second reset operation, the positions of the first subgroup are set based on a second portion of the second bitplane and the positions of the second subgroup are set based on a second portion of a first bitplane. In one example, subsets of alternating rows of micromirrors of the same reset group are successively set according to alternating data corresponding to different ones of first and second bitplanes.

主权项

1. A method of controlling a micromirror array, the array comprised of an array of individually controllable micromirror elements arranged in a plurality of reset groups, each of the micromirror elements in a given reset group having a one-to-one correspondence with a respective memory cell of an array of memory cells, the method comprising the steps of:
loading a first portion of a first bit plane of image data into a first subset of memory cells corresponding to a first subset of micromirror elements of the given reset group; loading a first portion of a second bit plane of image data into a second subset of memory cells corresponding to a second subset of micromirror elements of the given reset group; resetting the micromirror elements of the given reset group in a first reset operation, to set positions of the first subset of micromirror elements based on the first portion of the first bit plane loaded into the first subset of memory cells, and to set positions of the second subset of micromirror elements based on the first portion of the second bit plane loaded into the second subset of memory cells; loading a second portion of the second bit plane of image data into the first subset of memory cells; loading a second portion of the first bit plane of image data into the second subset of memory cells; and resetting the micromirror elements of the given reset group in a second reset operation, to set positions of the first subset of micromirror elements based on the second portion of the second bit plane loaded into the first subset of memory cells, and to set positions of the second subset of micromirror elements based on the second portion of the first bit plane loaded into the second subset of memory cells.