System and method for pulse-width modulating a phase-only spatial light modulator
AssigneeJasper Display Corp.
InventorsRobert Lo, Edwin Lyle Hudson, Mike Stover, Shih-Ya Hong, David Charles Mcdonald
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Abstract
A method of pulse width modulating a spatial light modulator comprises determining a modulation sequence and applying the modulation sequence to the spatial light modulator in a time order method. The modulation sequence comprises a plurality of minor modulation segments. Each minor modulation segment comprises an always-on modulation segment in an always-on state. The plurality of minor modulation segments are temporally spaced such that the always-on modulation segments are spaced at predetermined intervals. Each minor modulation segment comprises at least one thermometer bit.
Claims16
A method of pulse width modulating a spatial light modulator, the method comprising;
- determining a modulation sequence, said modulation sequence comprising a plurality of minor modulation segments, wherein:
- each minor modulation segment comprises an always-on modulation segment in an always-on state,
- said plurality of minor modulation segments are temporally spaced such that said always-on modulation segments are spaced at predetermined intervals, and
- each minor modulation segment further comprises at least one thermometer bit;
- and
- applying said modulation sequence to said spatial light modulator in a time order method,
- wherein said always-on modulation segment of each minor modulation segment is preceded by one or more thermometer bit segments, and one thermometer bit segment is placed in an on state in each of said plurality of minor modulation segments before a second thermometer bit segment is placed in an on state in any minor modulation segment with a first thermometer bit already in an on state.
A method of pulse width modulating a spatial light modulator, the method comprising;
- determining a modulation sequence, said modulation sequence comprising at least one major or minor modulation segment, wherein:
- said modulation sequence comprises time slots of thermometer bit segments or lesser significant bit segments to which thermometer bits or lesser significant bits are assigned respectively according to a predetermined temporal order, and
- one or more of the time slots assigned to be occupied by thermometer bits in an off state are respectively populated by segments of subthermometer bits according to a predetermined set of rules;
- and
- applying said modulation sequence to said spatial light modulator,
- wherein said modulation sequence comprises at least two major or minor modulation segments, and said subthermometer bits are allocated such that no major or minor modulation segment receives a second subthermometer bit in an on state until all major or minor modulation segments intended to have a subthermometer bit have received a subthermometer bit in an on state.
Dependencies are inferred from the claim text.