Image display apparatus, electronic apparatus, liquid crystal TV, liquid crystal monitoring apparatus, image display method, display control program, and computer-readable recording medium
First Claim
1. An image display apparatus for performing image display by dividing one frame period into a plurality of sub-frame periods, determining a gradation level of each of the sub-frame periods in accordance with a gradation level of an input image signal and supplying the determined gradation level to an image display section, the image display apparatus comprising:
- a display control section, wherein the display control section supplies a relatively largest gradation level in a relatively central sub-frame period which is at a time-wise center or closest to the time-wise center of one frame period, and supplies a sequentially lowered gradation level in a sub-frame period which is sequentially farther from the relatively central sub-frame period.
1 Assignment
0 Petitions
Accused Products
Abstract
An image display apparatus is provided for performing image display by dividing one frame period into a plurality of sub-frame periods, determining a gradation level of each of the sub-frame periods in accordance with a gradation level of an input image signal and supplying the determined gradation level to an image display section. The image display apparatus comprises a display control section, wherein the display control section supplies a relatively largest gradation level in a relatively central sub-frame period which is at a time-wise center or closest to the time-wise center of one frame period, and supplies a sequentially lowered gradation level in a sub-frame period which is sequentially farther from the relatively central sub-frame period.
146 Citations
340 Claims
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1. An image display apparatus for performing image display by dividing one frame period into a plurality of sub-frame periods, determining a gradation level of each of the sub-frame periods in accordance with a gradation level of an input image signal and supplying the determined gradation level to an image display section, the image display apparatus comprising:
a display control section, wherein the display control section supplies a relatively largest gradation level in a relatively central sub-frame period which is at a time-wise center or closest to the time-wise center of one frame period, and supplies a sequentially lowered gradation level in a sub-frame period which is sequentially farther from the relatively central sub-frame period. - View Dependent Claims (2, 3, 4, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 166, 167, 168, 292)
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5. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods (where n is an integer of 2 or greater), the image display apparatus comprising:
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a display control section for performing the n sub-frame periods of image display control on the image display section in each one-frame period, wherein;
in a relatively central sub-frame period which is at a time-wise center, or closest to the time-wise center, of one frame period for image display, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level within the range in which a sum of time-integrated value of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of an input image signal;
when the sum of time-integrated values of luminance in the relatively central sub-frame period does not reach the luminance level corresponding to the gradation level of the input image signal, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level within the range in which the sum of time-integrated values of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of the input image signal, in each of a preceding sub-frame period before the central sub-frame period and a subsequent sub-frame period after the central sub-frame period;
when the sum of time-integrated values of luminance in the relatively central sub-frame period, the preceding sub-frame period and the subsequent sub-frame period still do not reach the luminance level corresponding to the gradation level of the input image signal, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level within the range in which the sum of time-integrated values of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of the input image signal, in each of a sub-frame period before the preceding sub-frame period and a sub-frame period after the subsequent sub-frame period;
the display control section repeats the operation until the sum of time-integrated values of luminance in all the sub-frame periods in which the image signals have been supplied reaches the luminance level corresponding to the gradation level of the input image signal; and
when the sum reaches the luminance level corresponding to the gradation level of the input image signal, the display control section supplies, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the remaining sub-frame periods. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 293, 294, 295)
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6. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods (where n is an odd number of 3 or greater), the image display apparatus comprising:
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a display control section for performing the n sub-frame periods of image display control on the image display section in each one-frame period, wherein;
the sub-frame periods are referred to as a first sub-frame period, a second sub-frame period, . . . the n'"'"' th sub-frame period from the sub-frame period which is earliest in terms of time or from the sub-frame period which is latest in terms of time; and
the sub-frame period which is at a time-wise center of one frame period for image display is referred to as the m'"'"'th sub-frame period, where m=(n+1)/2;
(n+1)/2-number of threshold levels are provided for the gradation level of an input image signal, and the threshold levels are referred to as T1, T2, . . . T[(n+1)/2] from the smallest threshold level;
when the gradation level of the input image signal is equal to or less than T1, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the m'"'"'th sub-frame period, and an image signal of a relatively smallest gradation level or an image signal lower than a prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T1 and equal to or less than T2, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the m'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m−
1)'"'"'th sub-frame periods and the (m+1)'"'"'th sub-frame periods, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower then the prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T2 and equal to or less than T3, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the m'"'"'th sub-frame periods, the (m−
1)'"'"'th sub-frame periods and the (m+1)'"'"'th sub-frame periods, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m−
2)'"'"'th sub-frame periods and the (m+2)'"'"'th sub-frame periods, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods; and
in this manner,when the gradation level of the input image signal is greater than Tx−
1 (x is an integer of 4 or greater) and equal to or less than Tx, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level or an image of a gradation level greater than the prescribed value in each of the [m−
(x−
2)]'"'"'th sub-frame periods through the [m+(x−
2)]'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the [m−
(x−
1)]'"'"'th sub-frame periods through the [m+(x−
1)]'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 296, 297, 298)
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7. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods (where n is an even number of 2 or greater), the image display apparatus comprising:
a display control section for performing the n sub-frame periods of image display control on the image display section in each one-frame period, wherein;
the sub-frame periods are referred to as a first sub-frame period, a second sub-frame period, . . . the n'"'"'th sub-frame period from the sub-frame period which is earliest in terms of time or from the sub-frame period which is latest in terms of time; and
two sub-frame periods which are closest to a time-wise center of one frame period for image display are referred to as the mist sub-frame period and the m2nd sub-frame period, where m1=n/2 and m2=n/2+1;
n/2-number of threshold levels are provided for the gradation level of an input image signal, and the threshold levels are referred to as T1, T2, . . . T[n/2] from the smallest threshold level;
when the gradation level of the input image signal is equal to or less than T1, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the m1st sub-frame period and the m2nd sub-frame period, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T1 and equal to or less than T2, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the mist sub-frame period and the m2nd sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m1−
1)'"'"'th sub-frame period and the (m2+1)'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T2 and equal to or less than T3, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the mist sub-frame period, the m2nd sub-frame period, the (m1−
1)'"'"'th sub-frame period and the (m2+1)'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m1−
2)'"'"'th sub-frame period and the (m2+2)'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods; and
in this manner,when the gradation level of the input image signal is greater than Tx−
1 (x is an integer of 4 or greater) and equal to or less than Tx, the display control section supplies, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the [m1−
(x−
2)]'"'"'th sub-frame periods through the [m2+(x−
2)]'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the [m1−
(x−
1)]'"'"'th sub-frame periods through the [m2+(x−
1)]'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods.- View Dependent Claims (60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 299, 300, 301)
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8. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods, the image display apparatus comprising:
a display control section for performing the two sub-frame periods of image display control on the image display section in each one-frame period, wherein;
one of the sub-frame periods is referred to as a sub-frame period α
, and the other sub-frame period is referred to as a sub-frame period β
;
when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased by the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the sub-frame period α
; and
an image signal of a gradation level which is increased or decreased by the gradation level of the input image signal in the sub-frame period β
.- View Dependent Claims (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 302, 303, 304)
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9. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods, the image display apparatus comprising:
a display control section for performing the two sub-frame periods of image display control on the image display section in each one-frame period, wherein;
one of the sub-frame periods is referred to as a sub-frame period α
, and the other sub-frame period is referred to as a sub-frame period β
; and
threshold levels, T1 and T2, of the gradation levels in the two sub-frame periods are defined, and the threshold level T2 is greater than the threshold level T1;
when the gradation level of an input image signal is equal to or less than the threshold level T1, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the sub-frame period β
;
when the gradation level of the input image signal is greater than the threshold level T1 and equal to or less than the threshold level T2, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a gradation level which is lower than the gradation level supplied in the sub-frame period α and
which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level T2, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level which is greater than the prescribed value in the sub-frame period α
, and an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
.- View Dependent Claims (93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 305, 306, 307)
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10. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods, the image display apparatus comprising:
a display control section for performing the two sub-frame periods of image display control on the image display section in each one-frame period, wherein;
one of the sub-frame periods is referred to as a sub-frame period α
, and the other sub-frame period is referred to as a sub-frame period 1;
threshold levels, T1 and T2, of the gradation levels in the two sub-frame periods are defined, and the threshold level T2 is greater than the threshold level T1; and
a gradation level L is uniquely determined;
when the gradation level of an input image signal is equal to or less than the threshold level T1, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed level in the sub-frame period β
;
when the gradation level of the input image signal is greater than the threshold level T1 and equal to or less than the threshold level T2, the display control section supplies, to the image display section, an image signal of the gradation level L in the sub-frame period α
, and an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level T2, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the sub-frame period β
.- View Dependent Claims (113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 308, 309, 310)
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11. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods, the image display apparatus comprising:
a display control section for performing the two sub-frame periods of image display control on the image display section in each one-frame period, wherein;
the display control section generates an image in an intermediate state in terms of time through estimation based on two frames of images continuously input;
one of the sub-frame periods is referred to as a sub-frame period α
, and the other sub-frame period is referred to as a sub-frame period β
;
in the sub-frame period α
, when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal; and
when the gradation level of the input image signal is greater than the threshold level, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than a prescribed value; and
in the sub-frame period β
, when the gradation level of the image signal in the intermediate state is equal to or less than the threshold level, the display control section supplies, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value; and
when the gradation level of the image signal in the intermediate state is greater than the threshold level, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the image signal in the intermediate state.- View Dependent Claims (132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 311, 312, 313)
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12. An image display apparatus for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods, the image display apparatus comprising:
a display control section for performing the two sub-frame periods of image display control on the image display section in each one-frame period, wherein;
one of the sub-frame periods is referred to as a sub-frame period α
, and the other sub-frame period is referred to as a sub-frame period β
;
in the sub-frame period α
, when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal; and
when the gradation level of the input image signal is greater than the threshold level, the display control section supplies, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than a prescribed value; and
in the sub-frame period β
, when an average value of the gradation level of the image signal in the current frame period and the gradation level of an image signal input one frame before or one frame after is equal to or less than the threshold level, the display control section supplies, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value; and
when the average value is greater than the threshold level, the display control section supplies, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the average value.- View Dependent Claims (149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 314, 315, 316)
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169. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods, where n is an integer of 2 or greater, the method comprising the following steps:
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in a relatively central sub-frame period which is at a time-wise center, or closest to the time-wise center of, one frame period for image display, the step of supplying, to the image display section, an image signal of a relatively largest gradation level within the range in which a sum of time-integrated value of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of an input image signal;
when the sum of time-integrated values of luminance in the relatively central sub-frame period does not reach the luminance level corresponding to the gradation level of the input image signal, the step of supplying, to the image display section, an image signal of the relatively largest gradation level within the range in which the sum of time-integrated values of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of the input image signal, in each of a preceding sub-frame period before the relatively central sub-frame period and a subsequent sub-frame period after the relatively central sub-frame period;
when the sum of time-integrated values of luminance in the relatively central sub-frame period, the preceding sub-frame period and the subsequent sub-frame period still do not reach the luminance level corresponding to the gradation level of the input image signal, the step of supplying, to the image display section, an image signal of the relatively largest gradation level within the range in which the sum of time-integrated values of luminance in the n sub-frame periods does not exceed the luminance level corresponding to the gradation level of the input image signal, in each of a sub-frame period before the preceding sub-frame period and a sub-frame period after the subsequent sub-frame period;
the step of repeating the operation until the sum of time-integrated values of luminance in all the sub-frame periods in which the image signals have been supplied reaches the luminance level corresponding to the gradation level of the input image signal; and
when the sum reaches the luminance level corresponding to the gradation level of the input image signal, the step of supplying, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the remaining sub-frame periods. - View Dependent Claims (177, 178)
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170. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods, where n is an odd number of 3 or greater, wherein:
-
the sub-frame periods are referred to as a first sub-frame period, a second sub-frame period, . . . the n'"'"' th sub-frame period from the sub-frame period which is earliest in terms of time or from the sub-frame period which is latest in terms of time; and
the sub-frame period which is at a time-wise center of one frame period for image display is referred to as the m'"'"'th sub-frame period, where m=(n+1)/2; and
(n+1)/2-number of threshold levels are provided for the gradation level of an input image signal, and the threshold levels are referred to as T1, T2, . . . T[(n+1)/2] from the smallest threshold level;
the method comprising the following steps;
when the gradation level of the input image signal is equal to or less than T1, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the m'"'"'th sub-frame period, and an image signal of a relatively smallest gradation level or an image signal lower than a prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T1 and equal to or less than T2, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the m'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m−
1)'"'"'th sub-frame period and the (m+1)'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower then the prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T2 and equal to or less than T3, the step of supplying, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the m'"'"'th sub-frame period, the (m−
1)'"'"'th sub-frame period and the (m+1)'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m−
2)'"'"'th sub-frame period and the (m+2)'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods; and
in this manner,when the gradation level of the input image signal is greater than Tx−
1, wherein x is an integer of 4 or greater, and equal to or less than Tx, the step of supplying, to the image display section, an image signal of the relatively largest gradation level or an image of a gradation level greater than the prescribed value in each of the [m−
(x−
2)]'"'"'th sub-frame period through the [m+(x−
2)]'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the [m−
(x−
1)]'"'"'th sub-frame period through the [m+(x−
1)]'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods. - View Dependent Claims (278, 279)
-
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171. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in n sub-frame periods, where n is an even number of 2 or greater, wherein:
-
the sub-frame periods are referred to as a first sub-frame period, a second sub-frame period, . . . the n'"'"'th sub-frame period from the sub-frame period which is earliest in terms of time or from the sub-frame period which is latest in terms of time; and
two sub-frame periods which are closest to a time-wise center of one frame period for image display are referred to as the mist sub-frame period and the m2nd sub-frame period, where m1=n/2 and m2=n/2+1; and
n/2-number of threshold levels are provided for the gradation level of an input image signal, and the threshold levels are referred to as T1, T2, . . . T[n/2] from the smallest threshold level;
the method comprising the following steps;
when the gradation level of the input image signal is equal to or less than T1, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the mist sub-frame periods and the m2nd sub-frame periods, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T1 and equal to or less than T2, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the m1st sub-frame period and the m2nd sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m1−
1)'"'"'th sub-frame periods and the (m2+1)'"'"'th sub-frame periods, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods;
when the gradation level of the input image signal is greater than T2 and equal to or less than T3, the step of supplying, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the mist sub-frame period, the m2nd sub-frame period, the (m1−
1)'"'"'th sub-frame period and the (m2+1)'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the (m1−
2)'"'"'th sub-frame periods and the (m2+2)'"'"'th sub-frame periods, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods; and
in this manner,when the gradation level of the input image signal is greater than Tx-1, wherein x is an integer of 4 or greater, and equal to or less than Tx, the step of supplying, to the image display section, an image signal of the relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in each of the [m1−
(x−
2)]'"'"'th sub-frame periods through the [m2+(x−
2)]'"'"'th sub-frame period, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in each of the [m1−
(x−
1)]'"'"'th sub-frame periods through the [m2+(x−
1)]'"'"'th sub-frame period, and an image signal of the relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value in the other sub-frame periods. - View Dependent Claims (280, 281)
-
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172. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods,
wherein one of the sub-frame periods is referred to as a sub-frame period α - , and the other sub-frame period is referred to as a sub-frame period β
;
the method comprising the following steps;
when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased by the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the sub-frame period α
; and
an image signal of a gradation level which is increased or decreased by the gradation level of the input image signal in the sub-frame period β
. - View Dependent Claims (282, 283)
- , and the other sub-frame period is referred to as a sub-frame period β
-
173. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods,
wherein one of the sub-frame periods is referred to as a sub-frame period α - , and the other sub-frame period is referred to as a sub-frame period β
; and
threshold levels, T1 and T2, of the gradation levels in the two sub-frame periods are defined, and the threshold level T2 is greater than the threshold level T1;
the method comprising the following steps;
when the gradation level of an input image signal is equal to or less than the threshold level T1, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed value in the sub-frame period β
;
when the gradation level of the input image signal is greater than the threshold level T1 and equal to or less than the threshold level T2, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a gradation level which is lower than the gradation level supplied in the sub-frame period α and
which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level T2, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level which is greater than the prescribed value in the sub-frame period α
, and an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
. - View Dependent Claims (284, 285)
- , and the other sub-frame period is referred to as a sub-frame period β
-
174. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods,
wherein one of the sub-frame periods is referred to as a sub-frame period α - , and the other sub-frame period is referred to as a sub-frame period β
;
threshold levels, T1 and T2, of the gradation levels in the two sub-frame periods are defined, and the threshold level T2 is greater than the threshold level T1; and
a gradation level L is uniquely determined;
the method comprising the following steps;
when the gradation level of an input image signal is equal to or less than the threshold level T1, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than a prescribed level in the sub-frame period β
;
when the gradation level of the input image signal is greater than the threshold level T1 and equal to or less than the threshold level T2, the step of supplying, to the image display section, an image signal of the gradation level L in the sub-frame period α
, and an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period β
; and
when the gradation level of the input image signal is greater than the threshold level T2, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal in the sub-frame period α
, and an image signal of a relatively largest gradation level or an image signal of a gradation level greater than the prescribed value in the sub-frame period β
. - View Dependent Claims (286, 287)
- , and the other sub-frame period is referred to as a sub-frame period β
-
175. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods,
wherein one of the sub-frame periods is referred to as a sub-frame period α - , and the other sub-frame period is referred to as a sub-frame period β
;
the method comprising the following steps;
generating an image in an intermediate state in terms of time through estimation based on two frames of images continuously input;
in the sub-frame period α
, when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal; and
when the gradation level of the input image signal is greater than the threshold level, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than a prescribed value; and
in the sub-frame period β
, when the gradation level of the image signal in the intermediate state is equal to or less than the threshold level, the step of supplying, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value; and
when the gradation level of the image signal in the intermediate state is greater than the threshold level, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the image signal in the intermediate state. - View Dependent Claims (288, 289)
- , and the other sub-frame period is referred to as a sub-frame period β
-
176. An image display method for performing one frame of image display by a sum of time-integrated values of luminance displayed in an image display section in two sub-frame periods,
wherein one of the sub-frame periods is referred to as a sub-frame period α - , and the other sub-frame period is referred to as a sub-frame period β
;
the method comprising the following steps;
in the sub-frame period α
, when the gradation level of an input image signal is equal to or less than a threshold level uniquely determined, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the gradation level of the input image signal; and
when the gradation level of the input image signal is greater than the threshold level, the step of supplying, to the image display section, an image signal of a relatively largest gradation level or an image signal of a gradation level greater than a prescribed value; and
in the sub-frame period β
, when an average value of the gradation level of the image signal in the current frame period and the gradation level of an image signal input one frame before or one frame after is equal to or less than the threshold level, the step of supplying, to the image display section, an image signal of a relatively smallest gradation level or an image signal of a gradation level lower than the prescribed value; and
when the average value is greater than the threshold level, the step of supplying, to the image display section, an image signal of a gradation level which is increased or decreased in accordance with the average value. - View Dependent Claims (290, 291)
- , and the other sub-frame period is referred to as a sub-frame period β
-
179. A method of supplying, for display, an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods including at least an a sub-frame period and a β
- sub-frame period, comprising;
supplying a gradation level of an input image signal to an image display section, wherein when both the moving object portion and background portion are of a luminance level below 50% of a relatively largest luminance, then a luminance level of a relatively smallest value is supplied in at least a β
sub-frame period of the plurality of sub-frame periods, and wherein, when both the moving object portion and background portion are of a luminance level of at least 50% of relatively largest luminance, then a luminance level of a relatively largest value is supplied in at least an a sub-frame period of the plurality of sub-frame periods. - View Dependent Claims (180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195)
- sub-frame period, comprising;
-
196. A method for supplying, for display, an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods, comprising:
supplying a gradation level of an input image signal to an image display section, wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively smaller than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively smaller than the luminance level supplied in the second sub-frame period, and wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively larger than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively larger than the luminance level supplied in the second sub-frame period. - View Dependent Claims (197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207)
-
208. An apparatus for displaying an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods including at least an α
- sub-frame period and a β
sub-frame period, comprising;
means for supplying a gradation level of an input image signal; and
means for displaying the image signal at the supplied gradation, wherein when both the moving object portion and background portion are of a luminance level below 50% of relatively largest luminance, then a luminance level of a relatively smallest value is supplied in at least a β
sub-frame period of the plurality of sub-frame periods, and wherein, when both the moving object portion and background portion are of a luminance level of at least 50% of relatively largest luminance, then a luminance level of a relatively largest value is supplied in at least an α
sub-frame period of the plurality of sub-frame periods. - View Dependent Claims (209, 210, 211, 212, 329, 330, 331)
- sub-frame period and a β
-
213. An apparatus for displaying an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods, comprising:
-
means for supplying a gradation level of an input image signal; and
means for displaying the input image signal at the supplied gradation, wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively smaller than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively smaller than the luminance level supplied in the second sub-frame period, and wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively larger than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively larger than the luminance level supplied in the second sub-frame period. - View Dependent Claims (214, 332, 333, 334)
-
-
215. An apparatus for displaying an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods including at least an a sub-frame period and a β
- sub-frame period, comprising;
a display control section, adapted to supply a gradation level of an input image signal; and
an image display section, adapted to display the image signal at the supplied gradation, wherein when both the moving object portion and background portion are of a luminance level below 50% of relatively largest luminance, then a luminance level of a relatively smallest value is supplied in at least a β
sub-frame period of the plurality of sub-frame periods, and wherein, when both the moving object portion and background portion are of a luminance level of at least 50% of relatively largest luminance, then a luminance level of a relatively largest is supplied in at least an a sub-frame period of the plurality of sub-frame periods. - View Dependent Claims (216, 217, 218, 219, 317, 318, 319)
- sub-frame period, comprising;
-
220. An apparatus for displaying an image of an input image signal including at least a moving object portion and a background portion, wherein a frame period is divided into a plurality of sub-frame periods, comprising:
-
a display control section, adapted to supply a gradation level of an input image signal; and
an image display section, adapted to display the input image signal at the supplied gradation, wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively smaller than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively smaller than the luminance level supplied in the second sub-frame period, and wherein when a luminance level of the moving object supplied in a first sub-frame period is of a luminance level relatively larger than the luminance level supplied in a second sub-frame period, then a luminance level of the background supplied in the first sub-frame period is also of a luminance level relatively larger than the luminance level supplied in the second sub-frame period. - View Dependent Claims (221, 320, 321, 322)
-
-
222. A method of supplying, for display, an image of an input image signal, wherein a frame period is divided into a plurality of sub-frames, comprising:
supplying a gradation level of an input image signal to an image display section, wherein a relatively largest luminance value is supplied in at least one relatively central of the plurality of sub-frames with relatively smallest luminance values being supplied in sub-frames relatively furthest from the relatively central of the plurality of sub-frames. - View Dependent Claims (223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239)
-
240. A method of supplying, for display, an image of an input image signal, wherein a frame period is divided into a plurality of sub-frames, comprising:
supplying a gradation level of an input image signal to an image display section, wherein luminance values of the gradation level are relatively lowered for sub-frames relatively outward from a relatively central of the plurality of sub-frames. - View Dependent Claims (241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257)
-
258. An apparatus for displaying an image of an input image signal, wherein a frame period is divided into a plurality of sub-frames, comprising:
-
means for supplying a gradation level of an input image signal; and
means for displaying the input image signal at a supplied gradation level, wherein a relatively largest luminance value is supplied in at least one relatively central of the plurality of sub-frames with relatively smallest luminance values being supplied in sub-frames relatively furthest from the relatively central of the plurality of sub-frames. - View Dependent Claims (259, 260, 261, 262, 335, 336, 337)
-
-
263. An apparatus for displaying an image of an input image signal, wherein a frame period is divided into a plurality of sub-frames, comprising:
-
a display control section, adapted to supply a gradation level of an input image signal; and
an image display section, adapted to display the input image signal at a supplied gradation level, wherein a relatively largest luminance value is supplied in at least one relatively central of the plurality of sub-frames with relatively smallest luminance values being supplied in sub-frames relatively furthest from the relatively central of the plurality of sub-frames. - View Dependent Claims (264, 265, 266, 267, 323, 324, 325)
-
-
268. An apparatus for displaying an image of an input image signal, wherein a frame period is divided into a plurality of sub-frames, comprising:
-
means for supplying a gradation level of an input image signal; and
means for displaying the input image signal at the supplied gradation level, wherein luminance values of the gradation level are relatively lowered for sub-frames relatively outward from a relatively central of the plurality of sub-frames. - View Dependent Claims (269, 270, 271, 272, 338, 339, 340)
-
-
273. An apparatus for displaying an image of an input image signal, wherein a frame period is divided into a plurality of sub-frame periods, comprising:
-
a display control section, adapted to supply a gradation level of an input image signal; and
an image display section, adapted to display the input image signal at the supplied gradation level, wherein luminance values of the gradation level are relatively lowered for sub-frames relatively outward from a relatively central of the plurality of sub-frames. - View Dependent Claims (274, 275, 276, 277, 326, 327, 328)
-
Specification