Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel, a backlight, a liquid crystal driving unit and a backlight driving unit. In each area, when the brightness level calculated based on the video signal is greater than or equal to a first threshold level, the backlight driving unit fixes a driving current supplied to the light emitting elements in one frame period and controls a lighting time according to the calculated brightness level. In each area, when the brightness level is less than the first threshold level, the backlight driving unit fixes the lighting time of the light emitting elements in one frame period and controls the driving current according to the calculated brightness level.

Abstract: According to one embodiment, a mobile terminal includes module, display, receiver, and transmitter. The module acquires image of at least portion of screen of display device. When image contains side of the screen, the transmitter calculates distance from the screen to the mobile terminal by using the size of the screen, angle of view of the module, and ratio between length of side of the screen contained in the image and length of side of the image. When the image contains test chart, the transmitter receives number of pixels of the test chart, resolution of the screen, and angle of view of the module, calculates the distance by using the number of pixels, the resolution, the angle of view, and a ratio between size of the test chart contained in the image and size of the image.

Abstract: According to one embodiment, an information processor includes an acquisition module. The acquisition module is configured to acquire a third value of a parameter based on a first value of the parameter, a second value of the parameter, and a predetermined value. The parameter is one of a brightness, a color temperature, and a color. The first value is a value of the parameter corresponding to a test chart of a display screen comprised in a captured image obtained by capturing the display screen and the background of the display screen by an image capturing module. The test chart comprises a parameter of the predetermined value. The second value is a value of the parameter of the background comprised in the captured image. The third value is a value of the parameter of the background.

Abstract: An analog-to-digital converter converts a video signal into a digital video signal consisting of N bits and outputs the converted signal. A correction value memory stores correction data consisting of M bits which is used to correct the difference in luminance between display pixels on a display. A multiplier multiplies the video signal consisting of N bits output from the analog-to-digital converter by the correction data consisting of M bits stored in the correction value memory, and outputs a video signal consisting of L bits with which the difference in luminance between display pixels on the display is corrected.

Abstract: A display device has first gamma correcting section which divides first color signal that configures a given video image signal into N regions in accordance with a size, which then carries out gamma correction by using a first coefficient specific to a first color signal different depending on each region, and outputs first correction signal, second gamma correcting section, which divides second color signal configures the video image signal into N regions in accordance with a size, which then carries out gamma correction by using second coefficient specific to the second color signal, and which outputs second correction signal, generating section which generates drive signals having amplitude values different from each other depending on each of the N regions in response to the first and second correction signals from the first and second gamma correcting sections, and display section.

Abstract: Gradations on a display unit having spacers and pixels disposed between a first and a second substrates are corrected with corresponding to dispositions of the spacers on the display unit. The gradations are corrected with corresponding to the dispositions of the spacers on the display unit and values of the gradations, and thereby, it becomes possible to eliminate irregularities in a display luminance in vicinities of the spacers regardless of gradation levels.

Abstract: A first, a second, and a third gradations respectively corresponding to a first, a second, and a third display colors at a display unit having a plurality of spacers disposed between a first and a second substrates and pixels of the first, the second, and the third display colors different from one another, are corrected with corresponding to dispositions of the spacers on the display unit. The first, the second, and the third gradations are respectively corrected with corresponding to the dispositions of the spacers on the display unit, and thereby, irregularities in a display luminances in the vicinities of the spacers can be reduced with corresponding to the first, the second, and the third respective display colors.

Abstract: A display device 1 includes: a display panel 10 in which display pixels Px driven by a drive signal having plural stages of amplitudes and pulse widths are disposed; an output data conversion circuit for an X driver 46 converting an image signal inputted from an inverse ? correction circuit 42 side into a signal having an amplitude component corresponding to an amplitude and a pulse width component corresponding to a pulse width of a signal line drive signal; and a drive signal generation portion 23 generating the signal line drive signal from the image signal converted by the output data conversion circuit for the X driver 46. The output data conversion circuit for the X driver 46 refers to a look up table for an output conversion of the X driver, and converts the image signal so as to correct a nonlinearity during a rising period of the signal line drive signal.

Abstract: In an update operation of uneven luminance correction values, a display area of a flat display is handled as if it is divided into a plurality of small areas A to I. Then, in one update operation of the uneven luminance correction values, the uneven luminance correction values are updated only for one of these small areas A to I. Therefore, by performing the update operation of the uneven luminance correction values the same number of times as the number (9) of the small areas A to I, the uneven luminance correction values for the whole display area of the flat display are updated.

Abstract: A judging unit compares data in a dither table for each display pixel with a numerical value of low-order 2 bits of an input signal (12 bits) and outputs 1 to an adder when the numerical value of the low-order 2 bits of the input signal is larger than the data in the dither table, while outputting 0 to the adder in other cases. The adder adds the value outputted from the judging unit to an uneven luminance correction value read from a correction memory, so that the uneven luminance correction value is corrected. A multiplier multiplies the input signal by the uneven luminance correction value after the correction.

Abstract: An analog-to-digital converter converts a video signal into a digital video signal consisting of N bits and outputs the converted signal. A correction value memory stores correction data consisting of M bits which is used to correct the difference in luminance between display pixels on a display. A multiplier multiplies the video signal consisting of N bits output from the analog-to-digital converter by the correction data consisting of M bits stored in the correction value memory, and outputs a video signal consisting of L bits with which the difference in luminance between display pixels on the display is corrected.

Abstract: An image display device includes a display section in which (m×n) display pixels are arrayed in a matrix form and located at intersections of m row wirings and n column wirings, a length L of the row being greater or equal to a length K of the column. Particularly, the display device further includes a scanning driver which sequentially selects the column wirings, and a driving circuit which supplies a drive signal to each of the row wirings based on a video signal synchronously with selection made by the scanning driver.

Abstract: NTSC convergence adjusting data corresponding to a plurality of portions on a display screen is stored in a data storage section in advance. Convergence adjusting data is stored in a field memory in a NTSC scanning mode. Adjusting data transferred to the memory is supplied to a vertical interpolation circuit, and interpolation adjusting data between the adjusting points is created using the plurality of adjusting data and interpolation coefficients. Data output from the vertical interpolation circuit is A/D-converted, and supplied to a deflection coil through a low pass filter as a convergence correction signal. In a PAL scanning mode, PAL convergence adjusting data is created with use of NTSC convergence adjusting data by a control microcomputer so as to be stored in the frame memory.

Abstract: A field memory stores convergence adjusting data which corresponds to a plurality of points on a display screen. An interpolation calculation circuit creates interpolation convergence adjusting data for correction points located between adjacent adjusting points, using a plurality of adjusting data items and interpolation coefficients. The output of the interpolation calculation circuit is subjected to digital/analog conversion and passed through a low-pass filter, thereby forming a convergence correction signal. This correction signal is supplied to each deflection coil. At the time of creating interpolation adjusting data for a point located between adjusting points, an optimal interpolation coefficient is output from a ROM or a ROM, depending upon whether the point is included in the odd or even field.

Abstract: An automatic laminator such as may be used for depositing layers of photoresist material on both sides of a base panel in which movement of the base panel during the laminating operation is continuous and overheating of the photoresist film layers is prevented. On each side of the inlet to a nip between a pair of heated rolls there is provided a main vacuum bail for holding the leading end of a web of photoresist film, and a secondary vacuum bail for pulling the leading end of the web are around arcuate end of the main vacuum bail. A first air cylinder which moves the main vacuum bail in a direction perpendicular to the plane of the base panel is itself movable in the same direction by a second air cylinder which also carries a third air cylinder, the latter moving the secondary vacuum bail in a direction parallel to the plane of the base panel. A nozzle plate is disposed opposed to the inlet of the heated rolls to cause the leading end of the web to be deposited smoothly onto the base panel.

Abstract: An apparatus for stripping a protective coating from a substrate such as an architectural ornament or copper-plated resin board. First and second rotatable rollers are mounted parallel to one another with the spacing therebetween being adjustable. Discharge units are mounted above and below, respectively, the two rotatable rollers. An adhesive roller projects beyond the surface of each of the rollers through an aperture formed therein. Adhesive tape is wound around the adhesive rollers with the sticky side of the tape to the outside. A push rod is selectively extendible through an aperture formed in the rollers to the rear, in the direction of rotation of the rollers, the position of the adhesive rollers. Protective coating, taken up onto the surface of the rotatable rollers by action of the adhesive rollers, is transferred from the surface of the rotatable rollers to the discharge units, and then discharged to the outside.

Abstract: An automatic laminator such as may be used for depositing layers of photoresist material on both sides of a base panel in which movement of the base panel during the laminating operation is continuous and overheating of the photoresist film layers is prevented. On each side of the inlet to a nip between a pair of heated rolls there is provided a main vacuum bail for holding the leading end of a web of photoresist film, and a secondary vacuum bail for pulling the leading end of the web are around arcuate end of the main vacuum bail. A first air cylinder which moves the main vacuum bail in a direction perpendicular to the plane of the base panel is itself movable in the same direction by a second air cylinder which also carries a third air cylinder, the latter moving the secondary vacuum bail in a direction parallel to the plane of the base panel. A nozzle plate is disposed opposed to the inlet of the heated rolls to cause the leading end of the web to be deposited smoothly onto the base panel.