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US 2009/0153590 A1Published application
Spoke synchronization system with variable intensity illuminator
AssigneeTexas Instruments Incorporated
InventorsGregory James Hewlett, Philip Scott King
Life of this patent
Estimating the term…
Abstract
A spoke synchronization technique allowing for lamp-pulsing synchronizes a spoke based on sub-arrays of a spatial light modulator. The lamp pulsing occurs during the spoke synchronization; and the lamp pulse for pulsing the lamp spans substantially across the entire spoke synchronization time period.
Claims25
A method for use in displaying an image, comprising:
- generating a sequence of color light using a spinning color wheel that comprises a set of color segments separated by a set of segment boundaries;
- sequentially illuminating an array of individually addressable pixels of a spatial light modulator using the color light, wherein each segment boundary is imaged onto the pixel array forming a spoke;
- dividing the pixel array of the spatial light modulator into a set of sub-arrays such that the pixels of the same sub-array are connected to a common reset signal;
- and
- at a time when a spoke is sweeping the pixels of a first sub-array, operating the pixels of the first sub-array differently from the pixels of a second sub-array that is not being swept by the spoke.
2 more elements
A method for use in displaying an image, comprising:
- generating a sequence of color light using a lamp and a spinning color wheel that comprises a set of color segments separated by a set of segment boundaries;
- sequentially illuminating an array of individually addressable pixels of a spatial light modulator using the color light, wherein each segment boundary is imaged onto the pixel array forming a spoke;
- dividing the pixel array of the spatial light modulator into a set of sub-arrays, wherein each sub-array comprises a plurality of pixel rows;
- at a time when a spoke is sweeping the pixels of a first sub-array, operating the pixels of the first sub-array differently from the pixels of a second sub-array that is not being swept by the spoke;
- and
- applying a lamp pulse to the lamp so as to pulse an intensity of the light from the lamp.
3 more elements
A method for use in displaying an image, comprising:
- generating a sequence of color light using a lamp and a spinning color wheel that comprises a set of color segments separated by a set of segment boundaries;
- sequentially illuminating an array of individually addressable pixels of a spatial light modulator using the color light, wherein each segment boundary is imaged onto the pixel array forming a spoke;
- dividing the pixel array of the spatial light modulator into a set of sub-arrays such that the pixels of the same sub-array are connected to a common reset signal;
- and
- applying a lamp pulse to the lamp so as to pulse an intensity of the light from the lamp during a time period that is associated with a timing of the spoke sweeping across the sub-arrays.
2 more elements
A display system, comprising:
- a lamp for providing light;
- a color wheel comprising a set of color segments separated by a set of segment boundaries;
- a spatial light modulator comprising an array of individually addressable pixels, wherein the pixels are divided into a set of sub-arrays;
- a set of optical element for directing the light from the lamp to the spatial light modulator and the light from the spatial light modulator to a projection lens, wherein each segment boundary is imaged onto the pixel array forming a spoke;
- and
- a system controller in communication with the spatial light modulator, further comprising:
- synchronization means for operating the pixels of a sub-array being swept by a spoke differently from the pixels of another sub-array that is not being swept by the spoke.
4 more elements
Dependencies are inferred from the claim text.