Display device
First Claim
Patent Images
1. A display device comprising:
- an illuminance sensor that detects an illuminance in a surrounding environment;
an input average luminance detection circuit that detects an average luminance of input images;
a frame insertion control circuit that produces a gray image frame and inserts the produced gray image frame into between an input image frame and its subsequently input image frame; and
an insertion luminance level generation circuit that determines a luminance of the gray image frame according to the illuminance detected by the illuminance sensor and the average luminance of the input images detected by the input average luminance detection circuit,wherein the insertion luminance level generation circuit is configured such that when the illuminance detected by the illuminance sensor is contained in a first range of less than a first set value, the luminance of the gray image frame is set to a lower luminance than the average luminance of the input images, that when the illuminance detected by the illuminance sensor is contained in a second range of not less than the first set value and less than a second set value, the luminance of the gray image frame is set to be equal to the average luminance of the input images, and that when the illuminance detected by the illuminance sensor is contained in a third range of not less than the second set value, the luminance of the gray image frame is set to a luminance of not lower than the average luminance of the input images; and
when the illuminance detected by the illuminance sensor is contained in the first range or the third range, the luminance of the gray image frame is determined such that a value obtained by dividing the luminance of the gray image frame by the average luminance of the input images increases as the illuminance detected by the illuminance sensor increases.
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Abstract
A display device includes an illuminance sensor for detecting an illuminance in a surrounding environment, an input average luminance detection circuit for detecting an average luminance of input images, a frame insertion control circuit for producing a gray image frame and inserting the produced gray image frame into between an input image frame and its subsequently input image frame input, and an insertion luminance level generation circuit for determining a luminance of the gray image frame according to the illuminance detected by the illuminance sensor and the average luminance of the input images detected by the input average luminance detection circuit.
9 Citations
5 Claims
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1. A display device comprising:
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an illuminance sensor that detects an illuminance in a surrounding environment; an input average luminance detection circuit that detects an average luminance of input images; a frame insertion control circuit that produces a gray image frame and inserts the produced gray image frame into between an input image frame and its subsequently input image frame; and an insertion luminance level generation circuit that determines a luminance of the gray image frame according to the illuminance detected by the illuminance sensor and the average luminance of the input images detected by the input average luminance detection circuit, wherein the insertion luminance level generation circuit is configured such that when the illuminance detected by the illuminance sensor is contained in a first range of less than a first set value, the luminance of the gray image frame is set to a lower luminance than the average luminance of the input images, that when the illuminance detected by the illuminance sensor is contained in a second range of not less than the first set value and less than a second set value, the luminance of the gray image frame is set to be equal to the average luminance of the input images, and that when the illuminance detected by the illuminance sensor is contained in a third range of not less than the second set value, the luminance of the gray image frame is set to a luminance of not lower than the average luminance of the input images; and when the illuminance detected by the illuminance sensor is contained in the first range or the third range, the luminance of the gray image frame is determined such that a value obtained by dividing the luminance of the gray image frame by the average luminance of the input images increases as the illuminance detected by the illuminance sensor increases. - View Dependent Claims (2, 3, 4)
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5. A display device comprising:
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a means for detecting an illuminance in a surrounding environment; a means for detecting an average luminance of input images; a means for producing a gray image frame and inserting the produced gray image frame into between an input image frame and its subsequently input image frame; and a means for determining a luminance of the gray image frame according to the illuminance detected by the means for detecting the illuminance and the average luminance of the input images detected by the means for detecting the average luminance so that a value obtained by dividing the luminance of the gray image frame by the average luminance of the input images increases as the illuminance detected by the means for detecting the illuminance increases, wherein the means for determining the luminance is configured such that when the illuminance detected by the means for detecting the illuminance is contained in a first range of less than a first set value, the luminance of the gray image frame is set to a lower luminance than the average luminance of the input images, that when the illuminance detected by the means for detecting the illuminance is contained in a second range of not less than the first set value and less than a second set value, the luminance of the gray image frame is set to be equal to the average luminance of the input images, and that when the illuminance detected by the means for detecting the illuminance is contained in a third range of not less than the second set value, the luminance of the gray image frame is set to a luminance of not lower than the average luminance of the input images; and when the illuminance detected by the means for detecting the illuminance is contained in the first range or the third range, the luminance of the gray image frame is determined such that the value obtained by dividing the luminance of the gray image frame by the average luminance of the input images increases as the illuminance detected by the means for detecting the illuminance increases.
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Specification