Lighting period setting method, display panel driving method, backlight driving method, lighting condition setting device, semiconductor device, display panel and electronic equipment
First Claim
1. A lighting period setting method for a display panel which permits control of the peak luminance level by controlling the total lighting period length which is the sum of all lighting periods per field period, the lighting period setting method comprising the steps of:
- calculating the average luminance level across the screen based on input image data;
determining light emission mode based on the calculated average luminance level; and
setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.
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Accused Products
Abstract
Disclosed herein is a lighting period setting method for a display panel which permits control of the peak luminance level by controlling the total lighting period length which is the sum of all lighting periods per field period, the lighting period setting method including the steps of, calculating the average luminance level across the screen based on input image data, determining light emission mode based on the calculated average luminance level, and setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.
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Citations
12 Claims
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1. A lighting period setting method for a display panel which permits control of the peak luminance level by controlling the total lighting period length which is the sum of all lighting periods per field period, the lighting period setting method comprising the steps of:
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calculating the average luminance level across the screen based on input image data; determining light emission mode based on the calculated average luminance level; and setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data. - View Dependent Claims (2, 3)
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4. A driving method of a display panel whose peak luminance level is varied by controlling the total lighting period length which is the sum of all lighting periods per field period, the driving method comprising the steps of:
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calculating the average luminance level across the screen based on the input image data; determining a light emission mode based on the calculated average luminance level; setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; and driving a pixel array section so as to provide the set period length.
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5. A backlight driving method for a display panel whose peak luminance level is varied by controlling the total lighting period length which is the sum of all lighting periods per field period, the backlight driving method comprising the steps of:
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calculating the average luminance level across the screen based on the input image data; determining a light emission mode based on the calculated average luminance level; setting the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; and driving a backlight so as to provide the set period length.
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6. A lighting condition setting device comprising:
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a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; and a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.
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7. A semiconductor device comprising:
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a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; and a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data.
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8. A display panel whose peak luminance level is variably controlled by controlling the total lighting period length which is the sum of all lighting periods per field period, the display panel comprising:
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a pixel array section having a pixel structure appropriate for active matrix driving; a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; and a panel drive section configured to drive the pixel array section so as to provide the set period length. - View Dependent Claims (9)
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10. A display panel whose peak luminance level is variably controlled by controlling the total lighting period length which is the sum of all lighting periods per field period, the display panel comprising:
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a pixel array section having a pixel structure appropriate for active matrix driving; a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; and a backlight drive section configured to drive the backlight source so as to provide the set period length.
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11. Electronic equipment comprising:
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a pixel array section having a pixel structure appropriate for active matrix driving, the pixel array section whose peak luminance level is variably controlled by controlling the total lighting period length which is the sum of all lighting periods per field period; a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; a panel drive section configured to drive the pixel array section so as to provide the set period length; a system control section; and an operation input section for the system control section.
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12. Electronic equipment comprising:
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a pixel array section having a pixel structure appropriate for active matrix driving; a backlight source whose peak luminance level is varied by controlling the total lighting period length which is the sum of all lighting periods per field period; a luminance level calculation portion configured to calculate the average luminance level across the screen based on input image data; a light emission mode determination unit configured to determine the light emission mode based on the calculated average luminance level; a lighting period setting unit configured to set the number, arrangement and lengths of lighting periods per field period according to the setting conditions defined for the determined light emission mode so as to provide the peak luminance level which is set according to the input image data; a backlight drive section configured to drive the backlight source so as to provide the set period length; a system control section; and an operation input section for the system control section.
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Specification