Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
A method for driving a display device (2) which makes a gradationally toned display with several brightness levels by setting a plurality of frame time periods, during which each of pixels on its screen is controlled for displaying an image, as one integration time period and by turning on pixels for a number of specified frame time periods corresponding to display data of the image within the integration time period, making a gradational display by, grouping all pixels of the display device (2) into groups each of which is composed of a plurality of pixels (A, B, C, D) contiguous to each other, selecting the number of pixels to be turned on for each of the frame time periods within one integration time period corresponding to the specified gradation data of each group, and setting the frame time period during which the number of pixels to be turned on is kept constant as a period shorter than a predetermined period.
Claim 2
Independent Claim
160 words
A method for driving a display device (2) which makes a gradationally toned display with several brightness levels by setting a plurality of frame time periods, during which each of pixels on its screen is controlled for displaying an image, as one integration time period and by turning on pixels for a number of specified frame time periods corresponding to display data of the image within the integration time period, making a gradational display by, grouping all pixels of the display device (2) into groups each of which is composed of a plurality of pixels (A, B, C, D) contiguous to each other, selecting the number of pixels to be turned on for each of the frame time periods within one integration time period corresponding to the specified gradation data of each group, and setting the frame time period during which the number of pixels to be turned on is kept constant as a period shorter than a predetermined period.
Claim 3
Dependent Claim
52 words
A method for driving a display device according to claim 1, making a gradational display by using multiple gradation data for each frame time period on the basis of a plurality of gradation data which are apart by nearly equal level from specified gradation data in the directions opposite to each other.
Claim 4
Dependent Claim
33 words
A method for driving a display device according to claim 1, making a gradational display by turning on a number of pixels corresponding to the specified gradation data for each frame time period.
Claim 5
Dependent Claim
34 words
A method for driving a display device according to claim 3, wherein the pixels to be turned on are selected from pixels in different locations within each of groups for each frame time period.
Claim 6
Dependent Claim
31 words
A method for driving a display device according to claim 2, wherein difference between the plural gradation data is selected so as to be the minimum unit of the gradation data.
Claim 7
Dependent Claim
35 words
A method for driving a display device according to claim 2, wherein a period of variation among the plural gradation data is selected so as to be the same period as the frame time period.
Claim 8
Dependent Claim
139 words
A display device comprising an array of individually switchable pixel display elements, and pixel switching control means for controlling the display state of the pixels in accordance with an image to be displayed, said control means being operable for gradation control of the displayed image by controlling the number of frame periods within an integration period comprising a given succession of frame periods, during which the pixels are switched on, characterised in that said control means is arranged to control the pixels in groups each comprising a plurality of adjacent pixels, and to switch on a selected number of pixels in said group in each said frame period and in that the particular pattern of switched-on pixels is variable within the integration period, the frequency of said variation being greater than the frequency of repetition of the integration period.
Claim 9
Dependent Claim
139 words
A display device comprising an array of individually switchable pixel display elements, and pixel switching control means for controlling the display state of the pixels in accordance with an image to be displayed, said control means being operable for gradation control of the displayed image by controlling the number of frame periods within an integration period comprising a given succession of frame periods, during which the pixels are switched on, characterised in that said control means is arranged to control the pixels in groups each comprising a plurality of adjacent pixels, and to switch on a selected number of pixels in said group in each said frame period and in that the particular pattern of switched-on pixels is variable within the integration period, the frequency of said variation being greater than the frequency of repetition of the integration period.