Display operation with inserted block clears
First Claim
Patent Images
1. A method of operating an SLM, said method comprising:
- loading a first bit of display data in a block of SLM elements;
resetting said SLM elements to display said first bit of display data;
loading clear data in said block of SLM elements, said clear data loaded into groups of said SLM elements such that said step of loading clear data takes less time than said step of loading said first bit of display data;
resetting said SLM elements to display said clear data;
loading a second bit of display data in said block of SLM elements; and
resetting said block of SLM elements to display said second bit of display data.
1 Assignment
0 Petitions
Accused Products
Abstract
An SLM PWM clocking method, called “jog clear,” for generating short bit periods where block data clears (74) are inserted between block data loads (72, 76) within a frame refresh period. The method significantly reduces the short bit duration that requires use of the earlier reset-release method and it eliminates undesirable artifacts present in these earlier SLM clocking methods.
-
Citations
36 Claims
-
1. A method of operating an SLM, said method comprising:
-
loading a first bit of display data in a block of SLM elements;
resetting said SLM elements to display said first bit of display data;
loading clear data in said block of SLM elements, said clear data loaded into groups of said SLM elements such that said step of loading clear data takes less time than said step of loading said first bit of display data;
resetting said SLM elements to display said clear data;
loading a second bit of display data in said block of SLM elements; and
resetting said block of SLM elements to display said second bit of display data. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
- 5. The method of claim 5, further comprising the step of selecting a current block to load.
-
23. A projection display comprising:
-
a light source for producing a beam of light along a first light path;
control electronics for receiving image data and providing control signals and display data representing said image data; and
a spatial light modulator on said first light path for receiving said control signals and said display data and for selectively modulating said beam of light in response to display data, said spatial light modulator comprised of and array of modulator elements, said modulator elements grouped into at least two blocks;
said control electronics operable to;
load a first bit of display data in a first of said blocks, reset said first of said blocks to display loaded data, and load clear data in said first block, said clear data loaded into said first block faster than said first bit of said display data, wherein some, but not all, of additional blocks of modulator elements are loaded with a second bit of display data prior to resetting all of said blocks to display said clear data. - View Dependent Claims (24, 25, 26, 27, 28, 29)
-
-
30. A projection display comprising:
-
a light source for producing a beam of light along a first light path;
control electronics for receiving image data and providing control signals and display data representing said image data; and
a spatial light modulator on said first light path for receiving said control signals and said display data and for selectively modulating said beam of light in response to display data, said spatial light modulator comprised of and array of modulator elements, said modulator elements grouped into at least two blocks;
said control electronics operable to;
load a first bit of display data in a first of said blocks, reset said first of said blocks to display loaded data, and load clear data in said first block, said clear data loaded into said first block faster than said first bit of said display data, wherein some, but not all, of additional blocks of modulator elements are loaded with said clear data prior to resetting all of said blocks to display said first bit of display data. - View Dependent Claims (31, 32, 33, 34, 35, 36)
-
Specification