Patent application number | Description | Published |
20080266332 | DISPLAY CORRECTION CIRCUIT OF ORGAN EL PANEL - A display correction circuit of an organic EL panel for correcting, for display purposes, a video signal supplied to an organic EL panel, the display correction circuit includes: a linear gamma circuit supplied with a video signal which has been subjected to a predetermined gamma correction, the linear gamma circuit adapted to cancel the gamma correction of the video signal to convert the signal into a video signal having a linear gamma characteristic and adapted to output the resultant signal; a correction circuit supplied with the video signal from the linear gamma circuit; and a panel gamma circuit supplied with the video signal from the correction circuit, the panel gamma circuit adapted to convert the video signal into a video signal having a gamma characteristic associated with the gamma characteristic of the organic EL panel and adapted to output the resultant signal. | 10-30-2008 |
20080278421 | METHOD FOR UNEVEN LIGHT EMISSION CORRECTION OF ORGANIC EL PANEL AND DISPLAY CORRECTION CIRCUIT OF ORGANIC EL PANEL - A correction method for correcting uneven light emission of an organic EL panel, the correction method includes the steps of: supplying a predetermined signal to the organic EL panel to detect the brightness of the panel at horizontal and vertical scan positions; forming, based on a detection output thereof, correction data adapted to correct uneven brightness of the organic EL panel at a horizontal or vertical display position of the panel; storing the correction data in a memory; and reading the correction data from the memory during viewing to correct the level of a video signal supplied to the organic EL panel. | 11-13-2008 |
20080284702 | DISPLAY DEVICE, DRIVING METHOD AND COMPUTER PROGRAM FOR DISPLAY DEVICE - A display device includes: an average value calculating section which inputs video signals having linear property and calculates an average value of levels of the video signals in each pixel; an average value memory section which sequentially stores the average values calculated by the average value calculating section; a still image determining section which determines whether a still image is displayed on a present screen based on a difference between the average value stored in the average value memory section and a last average value; a coefficient calculating section which, when the determination is made that a still image is displayed on the present screen as a result of the determination in the still image determining section, calculates coefficients for lowering luminance of an image displayed on the display device; and a coefficient multiplying section which multiplies the video signals by the coefficients calculated by the coefficient calculating section. | 11-20-2008 |
20080284767 | DISPLAY DEVICE, CONTROL METHOD AND COMPUTER PROGRAM FOR DISPLAY DEVICE - A display device includes: a light emission amount detecting section which inputs video signals having linear property and detects an amount of light emission from the video signals; a light emitting time calculating section which calculates light emitting time of the light emitting elements based on the amount of light emission detected by the light emission amount detecting section; a light emitting time recording section which records the calculated light emitting time; a luminance acquiring section which, acquires luminance information of the light emitting elements using the light emitting time recorded in the light emitting time recording section; a coefficient calculating section which calculates coefficients by which the video signals are multiplied based on the luminance information acquired by the luminance acquiring section; and a coefficient multiplying section which multiplies the video signals by the coefficients calculated by the coefficient calculating section. | 11-20-2008 |
20080291136 | DISPLAY DEVICE, VIDEO SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device provided with a display portion, in which pixels having a light-emitting element for self-light-emitting, and a pixel circuit for controlling a current applied to a light-emitting element according to a voltage signal are arranged in a matrix, provided with an average luminance calculation portion calculating an average of luminance of an input video signal, and a light-emitting time setting portion setting a real duty defined every one frame by which light-emitting time for light emitting of the light-emitting element according to a calculated average luminance, wherein the light-emitting time setting portion sets the real duty in such a way that a light-emitting amount defined by a standard duty set beforehand and a maximum luminance among those of a video signal, and a light-emitting amount defined by a real duty to be set and an average luminance become the same as each other. | 11-27-2008 |
20090135304 | DISPLAY DEVICE, IMAGE SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device equipped with a display unit, the display device including a receiving part for receiving a difference signal of a plurality of channels including an image signal and content identification information inserted in a blanking period and outputting the image signal and the content identification information; a light emission amount regulation part for setting a reference duty according to image information of the image signal; an adjustment part for adjusting so that an actual duty is within a predetermined range based on the reference duty and an adjustment signal and adjusting a gain of the image signal so that a light emission amount defined by the actual duty and the gain of the image signal becomes the same as the light emission amount defined by the reference duty; and an adjustment signal generation part for generating the adjustment signal based on the content identification information. | 05-28-2009 |
20100118062 | DISPLAY DEVICE, METHOD OF DRIVING DISPLAY DEVICE, AND COMPUTER PROGRAM - There is provided a display device including a display unit having pixels, each of which includes a luminescence element for individually emitting light depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a picture signal, scan lines which supply a selection signal for selecting the pixels to emit light to the pixels in a predetermined scanning cycle, and data lines which supply the picture signal to the pixels, the pixels, the scan lines, and the data lines arranged in a matrix pattern, the display device including: a luminescence amount detector for inputting a picture signal with a linear characteristic to detect a luminescence amount from the picture signal; a luminescence time calculator for calculating a luminescence time for the luminescence element based on the luminescence amount detected by the luminescence amount detector; a luminescence time recorder for recording the calculated luminescence time; a luminance acquirer for acquiring luminance information of the luminescence element by use of the luminescence time recorded in the luminescence time recorder; a coefficient calculator for calculating a coefficient by which the picture signal is multiplied, based on the luminance information acquired by the luminance acquirer; and a coefficient multiplier for multiplying the picture signal by the coefficient calculated by the coefficient calculator. | 05-13-2010 |
20100123740 | DISPLAY ADJUSTING CIRCUIT FOR ORGANIC ELECTROLUMINESCENCE PANEL, DISPLAY ADJUSTING CIRCUIT, AND DISPLAY DEVICE - There is provided a display adjusting circuit for performing adjustment for display on a video signal to be supplied to an organic electroluminescence panel, the display adjusting circuit of the organic electroluminescence panel, comprising a linear gamma circuit where a video signal on which a predetermined gamma adjustment has been performed is supplied to be converted into a video signal with a linear gamma characteristic by cancelling the gamma adjustment of the supplied video signal and to be output, an adjusting circuit to which the video signal output from the linear gamma circuit is supplied, and a panel gamma circuit where the video signal output from the adjusting circuit is supplied to be converted into a video signal with a gamma characteristic corresponding to a gamma characteristic of the organic electroluminescence panel and to be output, the adjusting circuit including a detecting unit for detecting a driving state or a driving history of the organic electroluminescence panel from the supplied video signal, an adjusting unit for performing adjustment on the video signal supplied to the organic electroluminescence panel by a detecting output of the detecting unit. | 05-20-2010 |
20100127957 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes a luminescence amount regulator for setting a reference duty for regulating a luminescence amount for each one frame, according to the input picture signal, and an adjuster for adjusting an effective duty that regulates, for each one frame, a luminous time for which the luminescence element is luminous, and a gain of the picture signal, based on the reference duty and the input picture signal, so that the luminescence amount is constant before and after adjustment. | 05-27-2010 |
20100134535 | DISPLAY DEVICE, DISPLAY DEVICE DRIVE METHOD, AND COMPUTER PROGRAM - A display device is provided which includes: a still image detection unit ( | 06-03-2010 |
20100165009 | DISPLAY DEVICE, DISPLAY DEVICE DRIVE METHOD, AND COMPUTER PROGRAM - A display device is provided that includes an amount of light emission computation portion that computes an amount of light emission based on a video signal that has a linear characteristic, an amount of light emission parameter computation portion that, based on the computed amount of light emission, computes an amount of light emission parameter that corresponds to the amount of light emission for each of one of one pixel and a group of pixels that includes a plurality of the pixels, an amount of light emission parameter accumulation portion that accumulates the amount of light emission parameters in association with the one of the one pixel and the group of pixels, a peak detection portion that detects a peak value among the accumulated amount of light emission parameters that correspond to all of the one of the one pixel and the group of pixels, a coefficient computation portion that, based on the detected peak value, computes a coefficient that adjusts a luminance, and a coefficient multiplying portion that multiplies the video signal by the computed coefficient and outputs the multiplied video signal. | 07-01-2010 |
20100171770 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - Provided is a display device including a display unit having luminescence elements that individually becomes luminous depending on a current amount. The luminescence elements are arranged in a matrix pattern. The display device includes an adjustment signal generator for generating an adjustment signal for adjusting an effective duty regulating a luminous time per unit time. The luminescence elements are luminous for the luminous time. The display device also includes a luminous time setter for setting the effective duty equal to or lower than an upper limit value provided for the effective duty to be set, according to picture information of an input picture signal, so that a total luminescence amount per unit time is limited, at which amount the luminescence elements of the display unit are luminous. The display device further include an upper limit value setter for changing the upper limit value of the luminous time setter, depending on the adjustment signal output from the adjustment signal generator based on an operation. | 07-08-2010 |
20100177126 | DISPLAY DEVICE AND DISPLAY DEVICE DRIVE METHOD - A display device is provided that includes a pixel that has a light emitting element that emits light in accordance with an amount of an electric current and a pixel circuits that controls, in accordance with a video signal, an electric current that is applied to the light emitting element, a scanning line that supplies to the pixel, in a specified scan cycle, a selection signal that selects the pixel that will emit light, a data line that supplies a video signal to the pixel, and a display portion in which drive transistors to which the video signal is supplied are arranged in the form of a matrix. The display device also includes a gamma conversion portion that converts the video signal such that it has a gamma characteristic, and a transistor control portion that controls current-voltage characteristics of the transistors such that the gamma characteristic of the signal that is converted by the gamma conversion portion becomes a linear characteristic when it is multiplied by the current-voltage characteristics of the transistors. | 07-15-2010 |
20100328359 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - Provided is a display device including a display unit having luminescence elements that individually becomes luminous depending on a current amount. The luminescence elements are arranged in a matrix pattern. The display device comprises a luminescence amount regulator for setting a reference duty for regulating a luminescence amount per unit time for each of the luminescence elements, according to picture information of an input picture signal, and also comprises an adjuster for adjusting, based on the reference duty, an effective duty regulating a luminous time for which the luminescence elements become luminous within a unit time, so that the effective duty is within a predetermined range, and for adjusting a gain of the picture signal, so that a luminescence amount regulated with the effective duty and with the gain of the picture signal equals to the luminescence amount regulated with the reference duty. | 12-30-2010 |
20110050666 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes an average luminance calculator ( | 03-03-2011 |
20110141149 | DISPLAY DEVICE, METHOD FOR CORRECTING UNEVEN LIGHT EMISSION AND COMPUTER PROGRAM - A display device is provided that includes: an unevenness correction information storage unit that stores unevenness correction information used to correct uneven light emission of the display unit; and an unevenness correction unit that corrects uneven light emission of the display unit by reading out the unevenness correction information from the unevenness correction information storage unit and by performing signal processing on the video signal having a linear characteristic. The unevenness correction unit corrects the uneven light emission of the display unit by combining a first correction that is applied in a horizontal direction or a vertical direction of the display unit, and a second correction that is applied to a section of the display unit in which uneven light emission is occurring. | 06-16-2011 |
20110205442 | DISPLAY DEVICE, BRIGHTNESS ADJUSTMENT DEVICE, BACKLIGHT DEVICE, METHOD OF ADJUSTING BRIGHTNESS, AND PROGRAM - Provided is a display device including a current-brightness table calculation unit ( | 08-25-2011 |
20120002106 | IMAGE DISPLAY DEVICE, IMAGE DISPLAY METHOD, AND PROGRAM - Provided is an image display device including a high frame rate signal generating unit ( | 01-05-2012 |
20120033042 | IMAGE DISPLAY DEVICE, IMAGE DISPLAY OBSERVING SYSTEM, IMAGE DISPLAY METHOD, AND PROGRAM - Provided is an image display device including a high frame rate signal generating unit that increases a frame rate of an input video signal, a frame rate adjusting unit that adjusts a frame rate by synthesizing a black image at intervals of a predetermined frame on a high frame rate signal output from the high frame rate signal generating unit, and a display panel that displays a video based on a video signal output from the frame rate adjusting unit. | 02-09-2012 |
20130249970 | DISPLAY DEVICE, INTEGRATED CIRCUIT, AND CONTROL METHOD - There is provided a display device including a temporal direction control unit that causes a gain used to control a video signal to respond to an input video signal at high speed when the input video signal sharply increases, and causes the gain to respond to the input video signal at low speed when the input video signal gently increases. | 09-26-2013 |
20130271509 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes an average luminance calculator ( | 10-17-2013 |
20130335457 | DISPLAY UNIT, IMAGE PROCESSING UNIT, AND DISPLAY METHOD - An image processing unit includes: a gain calculating section obtaining, based on first luminance information for each pixel, a first gain, in which the first gain is configured to increase with an increase in pixel luminance value in a range where the pixel luminance value is equal to or larger than a predetermined luminance value, and in which the pixel luminance value is derived from the first luminance information; and a determination section determining, based on the first luminance information and the first gain, second luminance information for each of the pixels. | 12-19-2013 |
20130342587 | DISPLAY, IMAGE PROCESSING UNIT, AND DISPLAY METHOD - A display includes: a gain calculation section obtaining, according to an area of a high luminance region in a frame image, a first gain for each pixel in the region; a determination section determining, based on first luminance information for each pixel in the high luminance region and the first gain, second luminance information for each pixel in the high luminance region; and a display section performing display based on the second luminance information. | 12-26-2013 |
20140132590 | DISPLAY DEVICE, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - There is provided a display device including a display unit having pixels, each of which includes a luminescence element that individually becomes luminous depending on a current amount and a pixel circuit for controlling a current applied to the luminescence element according to a voltage signal, where the pixels are arranged in a matrix pattern. The display device includes an average luminance calculator ( | 05-15-2014 |
20140176403 | SELF-LUMINOUS DISPLAY DEVICE, CONTROL METHOD OF SELF-LUMINOUS DISPLAY DEVICE, AND COMPUTER PROGRAM - There is provided a self-luminous display device including a deterioration amount acquisition section configured to acquire a cumulative deterioration amount for each of a plurality of pixels arranged in a matrix shape on a screen, each of the pixels including a light emitting element which emits light by itself in accordance with a current amount, a deterioration amount calculation section configured to calculate a deterioration amount when an image is displayed based on a supplied video signal in each of the pixels by using a deterioration characteristic determined in accordance with a luminance of the video signal, and a cumulative information update section configured to reflect the cumulative deterioration amount acquired by the deterioration amount acquisition section in the deterioration amount calculated by the deterioration amount calculation section, and to update the reflected cumulative deterioration amount as a new cumulative deterioration amount. | 06-26-2014 |
20140176619 | SELF LIGHT EMITTING DISPLAY DEVICE, CONTROL METHOD OF SELF LIGHT EMITTING DISPLAY DEVICE AND COMPUTER PROGRAM - There is provided a self light emitting display device, including a variation detection unit configured to detect a variation of a video signal equal to, or greater than a predetermined threshold, a correction unit configured to correct an output level of the video signal based on the detection of the variation by the variation detection unit, and a video processing unit configured to perform a process with a predetermined time delay on the video signal supplied from the variation detection unit and configured to output the processed video signal to the correction unit. | 06-26-2014 |
20140176620 | DISPLAY UNIT, IMAGE PROCESSING DEVICE, DISPLAY METHOD, AND ELECTRONIC APPARATUS - An image processing device includes a control section configured to determine, based on first luminance information for each display pixel, frame luminance information in a single frame and current information. The current information indicates a magnitude of a current that is expected to be consumed in displaying the single frame on a display section. The control section is configured to control, based on the frame luminance information and the current information, light-emitting luminance of the display section. | 06-26-2014 |
20140176623 | SELF-LUMINOUS DISPLAY DEVICE, CONTROL METHOD OF SELF-LUMINOUS DISPLAY DEVICE, AND COMPUTER PROGRAM - Provided is a self-luminous display device including a data calculation section configured to calculate, by using a supplied video signal, data relating to a luminance amount accumulated in a unit of a first block in a target region for luminance control in a screen on which a plurality of pixels are arranged in a matrix, each of the pixels including a light emitting element which emits light by itself according to a current amount, a resampling section configured to resample the data relating to the luminance amount in the target region, in a unit of a second block, the data relating to the luminance amount being calculated by the data calculation section, the second block being larger than the first block, and a scaling section configured to generate data for luminance control in the target region by scaling the data resampled by the resampling section. | 06-26-2014 |
20140192099 | METHOD FOR UNEVEN LIGHT EMISSION CORRECTION OF ORGANIC EL PANEL AND DISPLAY CORRECTION CIRCUIT OF ORGANIC EL PANEL - A correction method for correcting uneven light emission of an organic EL panel, the correction method includes the steps of: supplying a predetermined signal to the organic EL panel to detect the brightness of the panel at horizontal and vertical scan positions; forming, based on a detection output thereof, correction data adapted to correct uneven brightness of the organic EL panel at a horizontal or vertical display position of the panel; storing the correction data in a memory; and reading the correction data from the memory during viewing to correct the level of a video signal supplied to the organic EL panel. | 07-10-2014 |
20140232935 | IMAGE DISPLAY DEVICE, IMAGE DISPLAY METHOD, AND PROGRAM - An electronic device that generates a high frame rate video signal by increasing a frame rate of an input video signal; sets a non-emission frame at a predetermined cycle on the high frame rate video signal; extends an emission time of a frame directly before the frame set to non-emission into less than a full length of a field of the frame set to non-emission; and controls a display panel to display a video based on the setting and the extending | 08-21-2014 |