Control device and control method for image display
First Claim
1. A control device of an image display, comprising:
- at least two reference points configured to generate light of a predetermined spectrum;
a modulation unit configured to modulate the light of the predetermined spectrum generated by the reference points with a brightness variation cycle and respectively with different brightness values associated with different reference points; and
a remote controller configured to capture the light of the predetermined spectrum with a sampling cycle which is shorter than the brightness variation cycle, and eliminate interferences of ambient light according to the brightness variation cycle and distinguish the different reference points according to the different brightness values associated with each of the reference points in a single sampling of the light of the predetermined spectrum;
wherein the different brightness values are not zero gray level.
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Abstract
A control device for an image display includes at least two reference points, a modulation unit and a remote controller. The modulation unit modulates the light of a predetermined spectrum generated by the reference points with a brightness variation cycle. The modulation unit controls the reference points to emit the light with a first brightness within a first period of the brightness variation cycle and to emit the light with a second brightness within a second period of the brightness variation cycle, wherein the first brightness and the second brightness are not zero gray level. The remote controller captures the light of the predetermined spectrum with a sampling cycle and demodulates an image variation of the reference points with respect to the remote controller. The present invention further provides a control method for an image display.
11 Citations
20 Claims
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1. A control device of an image display, comprising:
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at least two reference points configured to generate light of a predetermined spectrum; a modulation unit configured to modulate the light of the predetermined spectrum generated by the reference points with a brightness variation cycle and respectively with different brightness values associated with different reference points; and a remote controller configured to capture the light of the predetermined spectrum with a sampling cycle which is shorter than the brightness variation cycle, and eliminate interferences of ambient light according to the brightness variation cycle and distinguish the different reference points according to the different brightness values associated with each of the reference points in a single sampling of the light of the predetermined spectrum; wherein the different brightness values are not zero gray level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control device of an image display, comprising:
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a first reference point and a second reference point configured to generate light of a predetermined spectrum; a modulation unit configured to modulate the light generated by the first reference point with a first cycle and the light generated by the second reference point with a second cycle, wherein the modulation unit is configured to control the first reference point to emit the light with a first brightness within a first period of the first cycle and to emit the light with a second brightness within a second period of the first cycle, and the modulation unit is configured to control the second reference point to emit the light with a third brightness within a third period of the second cycle and to emit the light with a fourth brightness within a fourth period of the second cycle; and a remote controller configured to capture the light of the predetermined spectrum with a sampling cycle which is shorter than the first period, the second period, the third period and the fourth period, and eliminate interferences of ambient light according to the first cycle and the second cycle and distinguish different reference points according to the first brightness, the second brightness, the third brightness and the fourth brightness respectively associated with the first and second reference points in a single sampling of the light of the predetermined spectrum; wherein the first brightness, the second brightness, the third brightness and the fourth brightness are different from one another and not zero gray level. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A control method for an image display, comprising:
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providing a first reference point and a second reference point to generate light of a predetermined spectrum; modulating the light generated by the first reference point with a first cycle so that the first reference point emits the light with a first brightness within a first period of the first cycle and emits the light with a second brightness within a second period of the first cycle; modulating the light generated by the second reference point with a second cycle so that the second reference point emits the light with a third brightness within a third period of the second cycle and emits the light with a fourth brightness within a fourth period of the second cycle; and providing a remote controller to capture the light of the predetermined spectrum with a sampling cycle which is shorter than the first period, the second period, the third period and the fourth period, and eliminate interferences of ambient light according to the first cycle and the second cycle and distinguish different reference points according to the first brightness, the second brightness, the third brightness and the fourth brightness respectively associated with the first and second reference points in a single sampling of the light of the predetermined spectrum; wherein the first brightness, the second brightness, the third brightness and the fourth brightness are different and not zero gray level. - View Dependent Claims (17, 18, 19, 20)
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Specification