Color display apparatus
First Claim
Patent Images
1. A color display apparatus, comprising:
- a color changeover unit for changing over colors of an illumination light or a projection light, anda control circuit for applying a video signal for generating a control signal for controlling a spatial light modulator, wherein the control circuit generating the control signal corresponding to a first color or a second color during a transition period immediately at the end of a display frame period in transition to a next display frame period when the illumination and/or the projection light are projected with a first color overlapping with a second color as the color changeover unit changes over the colors of the illumination light or projection light from the first color to the second color at a beginning or an end point of the transition period.
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Abstract
A color display apparatus includes a color changeover unit for changing over colors of an illumination light or a projection light, and a control circuit for applying a video signal for generating a control signal for controlling a spatial light modulator, wherein the control circuit further applying the video signal for generating a control signal during a transition period when the illumination and/or the projection light are projected with a first color coexisting with a second color as the color changeover unit changing over the colors of the illumination light or projection light from the first color to the second color.
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Citations
20 Claims
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1. A color display apparatus, comprising:
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a color changeover unit for changing over colors of an illumination light or a projection light, and a control circuit for applying a video signal for generating a control signal for controlling a spatial light modulator, wherein the control circuit generating the control signal corresponding to a first color or a second color during a transition period immediately at the end of a display frame period in transition to a next display frame period when the illumination and/or the projection light are projected with a first color overlapping with a second color as the color changeover unit changes over the colors of the illumination light or projection light from the first color to the second color at a beginning or an end point of the transition period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A color display apparatus, comprising:
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a polarizing direction changeover unit for changing over a polarizing direction of an illumination light or a projection light, a control circuit for applying a video signal for generating a control signal in accordance with the polarizing direction; and a spatial light modulator, wherein the spatial light modulator applying the control signal generated by the control circuit corresponding to the polarization direction to modulate the illumination light in a transition modulation state during a transition period immediately at the end of a display frame period in transition to next display frame period for controlling when the polarizing direction changeover unit changes over the polarizing directions of the illumination light or projection light from a first polarizing direction to a second polarizing direction at a beginning or an end point of the transition period. - View Dependent Claims (11, 12, 13)
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14. A method to display a color video image from a display apparatus comprising a spatial light modulator comprising:
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applying a control signal corresponding to a first color or a second color to modulate the spatial light modulator during a first transition period when a light of a first color coexists with a second color in changing over from the first color to second color; and the step of controlling the spatial light modulator further comprising a step of applying a second control signal corresponding to the second color different from the control signal to modulate the spatial light modulator when the light of the second color coexists with a third color when the light is changed over from the second color to the third color.
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15. A method to display a color video image from display apparatus comprising a spatial light modulator comprising:
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applying a second control signal corresponding to the second color generated in a first transition period when changing from a first color to a second color to control the spatial light modulator when a light of the first color coexists with the light of the second color in changing over from the first color to the second color, and applying the second control signal generated in a second transition period when changing from the second color to a third color to control the spatial light modulator when the light of the second color coexists with the third color in changing over from the second color to the third color.
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16. A method to display a color video image from a display apparatus comprising a spatial light modulator having a plurality of pixel elements comprising:
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applying a video signal for controlling each of said pixel elements during a transition period immediately at the end of a display frame period in transition to next display frame period when changing from a first color with the light of the first color overlaps with the second color in changing over from the first color to the second color if a brightness of the video signal for the pixel element is greater than or equal to a predefined value, and controlling the pixel element to operate in an OFF state during the transition period immediately at the end of the display frame period in transition to next display frame period if the brightness of the video signal for the pixel element is smaller than the predefined value. - View Dependent Claims (17)
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18. A color display apparatus, comprising:
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a color changeover unit for changing over the colors of an illumination light or projection light, and a spatial light modulator for applying a video signal to modulate the illumination light by modulating the illumination light of different colors in synchronization with the color changeover unit in changing between light of the different colors, and wherein the color changeover unit further changes between the different colors in synchronization with a beginning or an end point of a transition period immediately at the end of a display frame period in transition from the display frame period to a next display frame period with at least two of said different colors overlapping with each other. - View Dependent Claims (19)
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20. A method to display a color video image from a display apparatus comprising a spatial light modulator having a plurality of pixel elements comprising:
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applying a first control signal corresponding to a first color to modulate the spatial light modulator during a first transition period when a light of a first color overlaps with a second color in changing over from the first color to second color; and applying a second control signal corresponding to a third color to modulate the spatial light modulator during a second transition period when a light of the second color overlaps with the third color in changing over from the second color to third color.
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Specification