Patent application number | Description | Published |
20080278468 | Electro-optical device, driving circuit and driving method of the same, and electronic apparatus - A driving circuit of an electro-optical device wherein one field is divided into p (p is an integer that is equal to or more than two) groups and each group is divided into two sub-fields. The p groups each are set to have the length of a time period that is equal to one another. The 2p sub-fields that constitute the one field are set to different lengths of time periods in such a manner that a boundary between two sub-fields of each group is shifted by a predetermined interval compared to the boundary between the two sub-fields of the preceding group. The different gray scale values are expressed by turning on a single sub-field or n (n is an integral number that is equal to two or more and that is equal to or less than 2p) sub-fields that are adjacent to each other. | 11-13-2008 |
20080291520 | Image display device, image display method, and image display program - An image display device having an optical modulation element, which modulates light emitted from a light source according to display information, and displaying a display image based on the display information includes: a unit adjusting the amount of illumination light with respect to light emitted from the light source on the basis of brightness information on the brightness of the display image based on the display information; a color conversion processing unit that performs a color conversion process according to the brightness information with respect to the display information so that the display image can be color-reproduced within a predetermined color space; and a display and driving unit that drives the optical modulation element on the basis of the display information having been subjected to the color conversion process so as to display the display image. | 11-27-2008 |
20080297877 | Image display device, image display method, and image display program - An image display device having an optical modulation element, which modulates light emitted from a light source according to display information, and displaying a display image based on the display information includes: a unit adjusting the amount of illumination light with respect to light emitted from the light source on the basis of brightness information on the brightness of the display image based on the display information; a color conversion processing unit that performs a color conversion process according to the brightness information with respect to the display information so that the display image can be color-reproduced within a predetermined color space; and a display and driving unit that drives the optical modulation element on the basis of the display information having been subjected to the color conversion process so as to display the display image. | 12-04-2008 |
20090002313 | Lighting apparatus and projection type display, and driving method therefor - A lighting apparatus used for a projection type display is provided, which can change the incident ray volume to an optical modulation device without changing the optical output intensity of the lamp, and can exhibit excellent effects in expressive power of an image and adaptability to the use environment. The lighting apparatus of the present invention comprises; a light source, two fly-eye lenses constituting a uniform lighting device, and a shading plate arranged between these fly-eye lenses and constituting a dimming device for adjusting the amount of light of the outgoing light from the light source. The angle of inclination of the shading plate is controlled based on an image signal supplied to the optical modulation device, thereby enabling adjustment of the amount of light. | 01-01-2009 |
20090079769 | DRIVING METHOD, DRIVING CIRCUIT, ELECTRO-OPTICAL DEVICE, AND ELECTRONIC APPARATUS - A display device includes a data converting section that converts display data that is to be supplied to pixel units. The data converting section converting on the basis of a predetermined conversion rule for each of a plurality of fields. The plurality of fields corresponds to respective light emission time periods of the plurality of light beams and following one after another in a successive manner on a time axis. The predetermined conversion rule converts data for a preceding field of one color to achieve a value in a successive field of a different color, such that the value approaches a desired value for at least one of brightness and color obtained when an image is displayed in the display area during the successive field. | 03-26-2009 |
20090195561 | ELECTRO-OPTICAL DEVICE, DRIVING CIRCUIT AND DRIVING METHOD OF THE SAME, AND ELECTRONIC APPARATUS - A driving circuit of an electro-optical device includes a scanning line driving circuit and a data line driving circuit. When a writing scanning line is selected, the data line driving circuit supplies a data signal of an on or off voltage allocated to a sub-field corresponding to the selection in terms of a gray scale of the pixel corresponding to the selected one of the writing scanning lines and one of the data lines. Among the plurality of sub-fields, the length of a time period of the shortest sub-field is set shorter than the length of a time period required to select, by the scanning line driving circuit, the plurality of writing scanning lines. | 08-06-2009 |
20100060556 | Display Device and Light Adjusting Method Thereof - The invention provides a display device and a light adjusting method thereof capable of carrying out light adjustment effectively by the output control of a light source and, preferably, of effecting light adjustment according to color distribution of a displayed image. The display device of the invention that is capable of adjusting a displayed image by changing light flux can include a plurality of light sources having light emitting diodes, an image analyzing unit for outputting a light control signal for controlling the output of each of the light sources, based on an image signal of the displayed image, and a light control device for controlling the output of each of the light sources based on the light control signals. | 03-11-2010 |
20100165218 | Display Device, Display Method, and Projection Type Display Device - Aspects of the invention can provide a display device, a display method, and a projection type display device that allow a characteristic of a display image such as brightness to be continuously changed. The display device can include a light source capable of emitting a plurality of different color lights and a white light, and an optical modulation device for modulating light corresponding to the lights emitted from the light source. The ratio of the period of emitting the white light relative to the total of the periods of emitting the lights from the light source can be variable. | 07-01-2010 |
20100321417 | DISPLAY DEVICE AND PROJECTION DISPLAY DEVICE - The invention provides a display device, a direct-view display device, and a projection display device in which their apparent dynamic ranges are increased with less color change. The display device can include a light modulation device having a plurality of pixels for displaying an image according to an image signal, a light source for illuminating the light modulation device, and a light-source driving device for controlling the intensity of light emitted from the light source by controlling the period in which the light source is lit at a specified brightness per unit time. | 12-23-2010 |
20110051006 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY APPARATUS, AND ELECTRONIC APPARATUS - Provided is a video processing circuit which designates an applied voltage, which is to be applied to a liquid crystal element of each pixel, based on a video signal, including: a first boundary detection portion which analyzes a video signal of a current frame and detects a boundary between a pixel, to which an applied voltage near a maximum grayscale is applied, and a pixel, to which an applied voltage near a minimum grayscale is applied, based on the video signal; a second boundary detection portion which analyzes a video signal of a frame preceding the current frame and detects a boundary between the pixel, to which the applied voltage near the maximum grayscale is applied, and the pixel, to which the applied voltage near the minimum grayscale is applied, based on the video signal; and a correction portion which corrects the applied voltage to a voltage which provides an initial tilt angle to a liquid crystal molecule in a case where the applied voltage designated with the video signal of a pixel adjacent to a portion changed from the boundary detected by the second boundary detection portion among the boundaries detected by the first boundary detection portion is lower than the voltage which provides the initial tilt angle to the liquid crystal molecule. | 03-03-2011 |
20110058111 | LIQUID CRYSTAL DISPLAY DEVICE, DRIVING METHOD AND ELECTRONIC DEVICE - A liquid crystal display device includes: pixel that corresponds to intersection of scanning line and data line and that each change the transmittance or reflectance of a liquid crystal element by means of a pair of electrodes; a scanning line driving circuit that selects scanning line and applies a selection voltage to the selected scanning line; and a data line driving circuit that applies writing voltages through the data line to the pixel that corresponds to the selected scanning line, wherein the scanning line driving circuit applies the selection voltage to the selected scanning line for video signal writing periods and setting periods that start before the video signal writing periods, respectively, the data line driving circuit supplies, to the pixel, data signals with voltages corresponding to video signals for the video signal writing periods and supplies, to the pixel, a setting signal with a predetermined voltage for the setting periods, and each of the setting periods is shorter than a response time required for the transmittance or reflectance of each of the liquid crystal element to change from 0% to 100% or a response time required for the transmittance or reflectance of each of the liquid crystal element to change from 100% to 0%. | 03-10-2011 |
20110109815 | VIDEO PROCESSING CIRCUIT AND METHOD, LIQUID CRYSTAL DISPLAY APPARATUS, AND ELECTRONIC APPARATUS - The video processing circuit includes a boundary detection unit that detects a specific boundary, which is a part of a boundary of a first pixel for which an applied voltage designated by the video signal is less than a first voltage, and a second pixel for which the applied voltage is more than a second voltage larger than the first voltage, the specific boundary being determined by tilt azimuth of the liquid crystal, and a replacement unit that replaces an applied voltage to a liquid crystal element corresponding to the first pixel with a predetermined voltage from the applied voltage designated by the input video signal when the applied voltage designated by the video signal is less than a third voltage smaller than the first voltage with respect to the first pixel adjacent to the specific boundary. | 05-12-2011 |
20110176071 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY APPARATUS AND ELECTRONIC DEVICE - A video processing includes: a boundary detecting section which respectively detects, in a current frame and a previous frame, a boundary between a first pixel in which the applied voltage designated by the video signal is lower than a first voltage and a second pixel in which the applied voltage is equal to or higher than a second voltage which is higher than the first voltage; and a correcting section which corrects the voltage applied to the liquid crystal element corresponding to at least one of the first pixel and the second pixel in positions between which a portion which moves from the boundary of the previous frame by one pixel is interposed, within the boundary of the current frame, to correct the input video signal in a direction where a transverse electric field generated in the first pixel and the second pixel is reduced. | 07-21-2011 |
20110181795 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit for a liquid crystal panel is disclosed. The video processing circuit includes: a risk boundary detecting unit configured to detect a risk boundary that is a portion of boundaries each between a first pixel whose applied voltage that is specified by an input video signal is below a first voltage and a second pixel whose applied voltage exceeds a second voltage higher than the first voltage, the risk boundary being determined by a tilt azimuth of the liquid crystal; an identification unit configured to identify a first pixel that is surrounded by the risk boundary at least two edges, in first pixels adjacent to the boundaries; and a replacement unit configured to replace, a voltage to be applied to a liquid crystal element corresponding to the first pixel, the voltage being specified by the input video signal, with a predetermined third voltage. | 07-28-2011 |
20110187759 | LIQUID CRYSTAL DEVICE, METHOD OF CONTROLLING LIQUID CRYSTAL DEVICE, AND ELECTRONIC APPARATUS - A liquid crystal device includes: a scanning line selecting circuit that selects a plurality of scanning lines in a predetermined order in each of a positive-polarity field and a negative-polarity field; a data line driving circuit that supplies a voltage corresponding to a gray scale of a pixel positioned on a one scanning line to the data line corresponding to the pixel as the data signal; a detection circuit that detects brightness of the pixel positioned on the one scanning line; and a control circuit that controls period lengths of the positive-polarity and negative-polarity fields based on a detection result of the detection circuit such that a difference between brightness of the pixel when the pixel maintains a voltage of the positive polarity and brightness of the pixel when the pixel maintains a voltage of the negative polarity is gradually changed in a predetermined range. | 08-04-2011 |
20110205207 | VIDEO PROCESSING CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE, ELECTRONIC APPARATUS, AND VIDEO PROCESSING METHOD - A video processing circuit, includes: a boundary detection section adapted to detect a boundary between a first pixel having an applied voltage, which is designated by the video signal input and is lower than a first voltage, and a second pixel having an applied voltage, which is designated by the video signal input and is one of equal to and higher than a second voltage higher than the first voltage, in a present frame and in a previous frame, which is one frame earlier than the present frame, respectively; and a correction section adapted to correct the video signal adapted to designate the applied voltages to the liquid crystal elements corresponding to the first pixel and the second pixel abutting on a moving section in the boundary of the present frame moving one pixel from the boundary in the previous frame so as to reduce a lateral electrical field caused by the first pixel and the second pixel. | 08-25-2011 |
20110205208 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit used in a liquid crystal panel, includes: a first boundary detector that analyzes a video signal of a present frame to detect a boundary between a first pixel and a second pixel; a second boundary detector that analyzes a video signal of a frame one frame before the present frame to detect a boundary between the first pixel and the second pixel; a correction portion that corrects an applied voltage to a liquid crystal device corresponding to a second pixel which is adjacent to a portion of the boundary detected by the first boundary detector, which is changed from the boundary detected by the second boundary detector from the applied voltage specified by the video signal of the present frame to a voltage equal to or higher than the first voltage and lower than the second voltage. | 08-25-2011 |
20110205439 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit for a liquid crystal panel, includes: a boundary detecting unit which detects a boundary between a first pixel whose applied voltage specified by an input video signal is below a first voltage and a second pixel whose applied voltage is equal to or higher than a second voltage which is higher than the first voltage; and a correction unit which corrects, for at least two second pixels one of which is adjacent to the boundary detected by the boundary detecting unit on the opposite side of the first pixel and which are successive in a direction opposite to the boundary, an applied voltage to liquid crystal elements corresponding to the second pixels from the applied voltage specified by the video signal to a voltage which is equal to or higher than the first voltage and below the second voltage. | 08-25-2011 |
20110205440 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit used in a liquid crystal panel, includes: a first boundary detector that analyzes a video signal of a present frame to detect a boundary between a first pixel and a second pixel; a second boundary detector that analyzes a video signal of a frame one frame before the present frame to detect a boundary between the first pixel and the second pixel; a third boundary detector that detects a risk boundary that is determined by a tilt azimuth of the liquid crystal; and a correction portion that corrects an applied voltage to a liquid crystal device corresponding to a first pixel from the applied voltage to a liquid crystal device corresponding to the first pixel to a third voltage or higher, when the applied voltage specified by the video signal input to the first pixel is lower than the third voltage. | 08-25-2011 |
20110205452 | VIDEO PROCESSING CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE, ELECTRONIC APPARATUS, AND VIDEO PROCESSING METHOD - A video processing circuit replaces an applied voltage designated by the video signal and applied to a first pixel with a predetermined third voltage, in the case that the applied voltage is lower than the third voltage, the first pixel is abutted on a predetermined application boundary, and the first pixel is surrounded by a risk boundary determined in accordance with a tilt azimuth direction of the liquid crystal on at least two sides. | 08-25-2011 |
20110205479 | VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit used in a liquid crystal panel, includes: a boundary detector that detects a portion of a boundary between a first pixel whose applied voltage specified by an input video signal is lower than a first voltage and a second pixel whose applied voltage is higher than a second voltage higher than the first voltage, as a risk boundary that is determined by a tilt azimuth of the liquid crystal; and a correction portion that corrects an applied voltage to a liquid crystal device corresponding to a second pixel which is adjacent to the risk boundary from the applied voltage specified by the video signal to a voltage equal to or lower than the second voltage and higher than the first voltage. | 08-25-2011 |
20130162698 | IMAGE PROCESSING APPARATUS, PROJECTOR AND IMAGE PROCESSING METHOD - A driving device of a display apparatus includes a calculation unit which calculates a correction value to correct a gradation value of a pixel that is a correction target on the basis of n gradation values that corresponds to n pixels and a correction unit which corrects the gradation value of a pixel that is a correction target on the basis of the correction value and the calculation unit performs a first calculation in a case in which a gradation value among the n gradation values is included in a first range, performs a second calculation in a case in which a gradation value among the n gradation values is included in a second range, respectively performs the first calculation or the second calculation on the n gradation values, and calculates the correction value on the basis of the calculation results performed on the n gradation values. | 06-27-2013 |
20130241914 | SIGNAL PROCESSING DEVICE, LIQUID CRYSTAL APPARATUS, ELECTRONIC EQUIPMENT, AND SIGNAL PROCESSING METHOD - A signal processing device which is used in a liquid crystal apparatus, includes a detection portion that detects a boundary between a first pixel to which a first voltage lower than a first reference voltage is applied and a second pixel to which a second voltage higher than a second reference voltage is applied on the basis of signals for controlling voltages applied to a plurality of pixels, and a correction portion that corrects the first voltage correlated with the first pixel to a third voltage which is higher than the first voltage and lower than the second voltage correlated with the second pixel. | 09-19-2013 |
20130241968 | SIGNAL PROCESSING DEVICE, LIQUID CRYSTAL DEVICE, ELECTRONIC APPARATUS AND SIGNAL PROCESSING METHOD - A signal processing device using a liquid crystal device having a plurality of pixels includes a storage unit that stores a signal which controls a level of transmittance in a plurality of pixels, a detection unit that, based on the signal that is stored in the storage unit, detects a first pixel associated with a second value which indicates higher transmittance than a first value, and a second pixel adjacent to the first pixel and associated with a fourth value which indicates the higher transmittance than a third value; and a correction unit that corrects the second value so that a difference of the transmittance indicated by the second value and the fourth value decreases. The third value indicates the higher transmittance than the first value, and the fourth value indicates a higher transmittance than the second value. | 09-19-2013 |
20130335650 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, LIQUID CRYSTAL DEVICE, AND ELECTRONIC APPARATUS - A signal processing device, on the basis of signals that control voltages to be applied to pixels, a boundary between a first pixel corresponding to a first signal that applies a first voltage and a second pixel adjacent to the first pixel and corresponding to a second signal that applies a second voltage different from the first voltage at least by a predetermined threshold. The first signal is corrected to a third signal that applies a third voltage higher than the first voltage, and the second signal is corrected to a fourth signal that applies a fourth voltage higher than the second voltage. The second voltage is higher than the first voltage, the fourth voltage is higher than the third voltage, and a potential difference between the first voltage and the third voltage is larger than a potential difference between the second voltage and the fourth voltage. | 12-19-2013 |
20140022514 | PROJECTOR AND METHOD FOR CONTROLLING PROJECTOR - A projector including a first light source, a second light source that emits light having a color different from the first light source, a light modulator that modulates the light emitted from each of the first and the second light sources, and a controller that controls a first operation state in which the first and the second light sources are driven based on time division driving to perform image display and a second operation state in which the first and the second light sources are driven based on time division driving to perform illumination, wherein in the second operation state, a switching frequency at which the first and the second light sources are switched from one to the other is higher than a switching frequency at which the first and the second light sources are switched from one to the other in the first operation state. | 01-23-2014 |
20140022515 | PROJECTOR - A projector includes a light source; a spatial light modulation device which modulates light from the light source according to an image that is written; a light diffusion device which adjusts a degree of diffusion of the light incident on the spatial light modulation device or the light emitted from the spatial light modulation device; and a light diffusion controller which controls the light diffusion device so that the light diffusion device diffuses the light when the light source starts to light up. | 01-23-2014 |
20140139811 | PROJECTOR AND METHOD FOR CONTROLLING THE SAME - A projector includes a power receiving terminal, a light source that emits light based on electric power supplied to the power receiving terminal, a light diffuser that adjusts the degree of diffusion of the light from the light source, a specifying section that alternately specifies one of illumination projection and image projection every time electric power supply to the power receiving terminal is started, and a light diffusion controller that controls the light diffuser so that when the specifying section specifies the illumination projection, the light diffuser diffuses the light from the light source, whereas when the specifying section specifies the image projection, the light diffuser transmits the light without substantially diffusing the light. | 05-22-2014 |
20140267213 | ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS - Vertical cross-talk is reduced. A correction circuit includes a correction amount calculation unit that calculates a correction amount on the basis of input image data Din and that generates correction amount data U; a correction coefficient generation unit that generates correction coefficient data C which represents a correction coefficient decided upon in accordance with a position in a horizontal scanning direction of a data line to which input image data Din to be corrected is supplied; and a correction unit that corrects the input image data Din on the basis of the correction amount data U and the correction coefficient data C and thereby generates correction image data Dh. | 09-18-2014 |
20140368560 | DISPLAY DEVICE, DISPLAY METHOD, AND PROJECTION TYPE DISPLAY DEVICE - Aspects of the invention can provide a display device, a display method, and a projection type display device that allow a characteristic of a display image such as brightness to be continuously changed. The display device can include a light source capable of emitting a plurality of different color lights and a white light, and an optical modulation device for modulating light corresponding to the lights emitted from the light source. The ratio of the period of emitting the white light relative to the total of the periods of emitting the lights from the light source can be variable. | 12-18-2014 |
20150022788 | PROJECTOR AND METHOD OF CONTROLLING PROJECTOR - A projector includes a projection section adapted to project light, a human detection section adapted to detect a human existing in a predetermined region, and a mode switching section adapted to switch an operation mode to one of a content mode for projecting light of an image related to a content by the projection section, and an illumination mode for projecting light for illumination by the projection section in accordance with a detection result of the human detection section. | 01-22-2015 |
20150029406 | PROJECTOR AND METHOD FOR CONTROLLING PROJECTOR - A projector includes an electricity reception terminal to which electric power is supplied via an electricity feed terminal, a projection section that includes a light source, a spatial light modulator, an irradiation system, and a projection system and projects light, and a control section that switches a content to another whenever electric power supply to the electricity reception terminal is initiated and causes the projection section to project light carrying an image related to the content selected in the switching operation. | 01-29-2015 |