| NEC DISPLAY SOLUTIONS, LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120069057 | LIQUID CRYSTAL DISPLAY DEVICE AND DRIVING METHOD FOR LIQUID CRYSTAL PANEL - A liquid crystal display device having a liquid crystal panel includes a common voltage generating section ( | 03-22-2012 |
| 20120008100 | DUSTPROOF STRUCTURE OF IMAGE GENERATION DEVICE, AND PROJECTION DISPLAY DEVICE - The present invention includes: LCDs ( | 01-12-2012 |
| 20110280093 | DATA PROTECTIVE STRUCTURE, ELECTRONIC DEVICE, AND METHOD OF ERASING DATA - The present invention includes: a circuit board which is provided with an electronic circuit part; a first case and a second case ( | 11-17-2011 |
| 20110234645 | IMAGE DISPLAY APPARATUS, PICTURE SIGNAL PROCESSING METHOD, AND PROGRAM - An image display apparatus includes: a panel ( | 09-29-2011 |
| 20110232992 | Noise suppressor, electronic apparatus, and noise suppression characteristic control method - A noise suppression characteristics adjustment method includes adjusting noise suppression characteristics of a noise suppressor, which includes a muffler having a reflection plate for reflecting sound from the cooling fan, the reflection plate being provided at a position in the cooling duct confronting an intake plane of the cooling fan and formed substantially parallel to the intake plane. A sound-absorbing part of the muffler is provided on the reflection plate. A distance d between the reflection plate and the intake plane is set such that d| 09-29-2011 | |
| 20110199587 | PROJECTOR AND CONTROL METHOD FOR THE SAME - A safe, highly bright projector is to be implemented. A projector directs a light beam from a light source ( | 08-18-2011 |
| 20110194077 | Illuminating optical system for projector - An illuminating optical system for a projector including a light source and a plurality of display panels, includes a first integrator that includes a plurality of lens cells that divide a luminous flux emitted by the light source into a plurality of partial luminous fluxes and that condense the respective partial luminous fluxes, a second integrator that includes a plurality of lens cells on which the respective partial luminous fluxes are incident, a polarization converting element that uniformizes polarizing directions of the luminous fluxes having passed through the respective lens cells of the second integrator, and a color separating unit that separates each of the luminous fluxes from the polarization converting element into a plurality of color lights of different wavelengths. A field lens and a condenser lens are arranged between the polarization converting element and the color separating unit. The field lens superimposes, on the plurality of display panels, the luminous fluxes having passed through the respective lens cells of the first integrator. | 08-11-2011 |
| 20110181566 | Image information detecting device - The present invention is directed to an image information detecting device that detects image light, and includes an image information detecting member that includes a detection surface having a light receiving sensor that detects image light, and a pressing member that is connected at one end thereof to the image information detecting member, and is provided so as to protrude from an other surface side which is opposite to the detection surface side. | 07-28-2011 |
| 20110116050 | PROJECTOR AND METHOD OF CONTROLLING THE SAME - The present invention is applied to a projector that comprises a plurality of projection devices which generate images by modulating laser beams in the colors of R, G, B with optical modulators and which project the images onto projection surfaces through projection lenses, wherein the images projected respectively from said projection devices onto said projection surfaces are tiled into a single image as a whole. In the projector of the present invention, the number of G-color laser beam sources is smaller than the number of images projected respectively from said projection devices onto said projection surfaces; and said projection devices share said G-color laser beam sources and apply G-color laser beams emitted from said G-color laser beam sources to said optical modulators thereof. | 05-19-2011 |
| 20100315600 | Lamp unit and projector employing same - A projector includes a light source, a pump which supplies a compressed gas to cool the light source, and an ejector member having a hole, in which, a tube connects the pump to the ejector member, the compressed gas is discharged from the hole, and a diameter of the hole is in a range from 0.2 mm to 0.4 mm. | 12-16-2010 |
| 20100238349 | Image display apparatus and frequency adjustment method thereof - A format of an inputted video signal is estimated to be based on the total number of vertical lines, and a frequency dividing ratio of a PLL unit is provisionally set at a predetermined value corresponding to the estimated format. Next, the frequency dividing ratio is calculated so that a measured value of a horizontal display width that is measured by a video detecting unit matches a capture width which is the horizontal display width capturable by a frame memory, and the calculated frequency dividing ratio is converted to a multiple of 4. A phase adjustment of the regenerative dot clock is performed against the video signal based on the converted frequency dividing ratio by using the regenerative dot clock generated by the PLL unit. Furthermore, the frequency dividing ratio is recalculated so that the measured value of the horizontal display width that is measured by the video detecting unit matches the capture width by using the regenerative dot clock after finishing the phase adjustment, and the calculated frequency dividing ratio is reset to the PLL unit. | 09-23-2010 |
| 20100201874 | Image display apparatus and method of adjusting clock phase - An image display apparatus includes a controller for dividing at least a portion of an image displayed based on a digital video signal, into a plurality of image areas defined by display lines, and establishing different delays for the divided image areas, a clock adjuster generating a clock in synchronism with the dot clock, delaying a phase of the clock according to the delays established by the controller, for the respective divided image areas, and outputting the delayed clock as the reproduced dot clock, and a delay evaluating unit converting differential data between adjacent signal levels into absolute values and accumulatively adding the absolute values based on the reproduced dot clock output from the clock adjuster, with respect to the display lines which define the divided image areas, thereby producing accumulated sums. The controller judges the delay established for the divided area with the maximum accumulated sum, as optimum. | 08-12-2010 |
| 20100149435 | VIDEO DISPLAY DEVICE AND LIGHT SOURCE DRIVING METHOD THEREOF - A display device uses a field sequential color scheme. Assume that a panel video writing period defines a period from the start of writing image data into a display panel to the completion of displaying the image on the basis of the image data in a sub-frame. A light source driving circuit generates a driving signal for gradually increasing the luminance of a light source of a color corresponding to a displayed image in the present sub-frame from zero to a predetermined value within the panel video writing period of the present sub-frame and for gradually decreasing the luminance of the light source from the predetermined value to zero within the panel video writing period of the next sub-frame. A light source driver drives the light source to emit light in accordance with the driving signal. | 06-17-2010 |
| 20100141167 | ILLUMINATION APPARATUS - An illumination apparatus used in non-light emission transparent display devices includes a base material, light emitting elements arranged two dimensionally on the surface of the base material, a drive section driving the light emitting elements, and a light emitting intensity control section controlling a light emitting intensity of the light emitting elements. An arrangement of the light emitting elements is such that a density at ends of the base material is high compared to that in a center part thereof, and the ends have a high density in regions where the base temperature is high and the center part has a high density in regions where the base material temperature is high. | 06-10-2010 |
| 20100128185 | DISPLAY APPARATUS - A display apparatus is capable of displaying a distortion-free projected image based on an image signal from a computer. The display apparatus receives an image signal from the computer and projects an image depending o the image signal onto a projection surface. The display apparatus includes a setting section which sets identification information representative of an aspect ratio of a display of the computer. The identification information set in the setting section can be changed by the user. | 05-27-2010 |
| 20100115052 | APPARATUS FOR DISPLAYING AN IMAGE, SYSTEM PROCESSING IMAGE DATA, AND METHOD OF PROCESSING IMAGE DATA - An apparatus of the present invention for displaying an image comprises connected device controller | 05-06-2010 |
| 20100103205 | DRIVING METHOD AND ELECTRO-OPTICAL APPARATUS - A driving method includes: dividing a unit period into a plurality of sub-frame periods corresponding to the primary colors; writing a primary color component in each sub-frame period by a first scan executed on the plurality of pixels; irradiating, in each sub-frame period, the plurality of pixels with the corresponding primary color of light by the irradiation unit at a timing that is after the first scan and before the first scan of a subsequent sub-frame period; and waiting a wait period that is from when the first scan of one primary color component among the at least three colors ends until when the irradiation unit starts irradiating the one primary color of light, the wait period for the one primary color being different from wait periods for the other colors. | 04-29-2010 |
| 20100066981 | Projector and method of cooling light source of projector - There are provided a projector which is capable of managing the temperature of the light source highly accurately, and a method of cooling the light source of a projector. The projector includes light source means | 03-18-2010 |
| 20100066979 | Projection display device - A projection display device that modulates light on the basis of image information to form an optical image, and that projects the formed optical image, includes: light source devices | 03-18-2010 |
| 20100053132 | LIQUID CRYSTAL DISPLAY APPARATUS AND LIQUID CRYSTAL DISPLAY APPARATUS CONTROL METHOD - A liquid crystal display apparatus according to the present invention includes: a liquid crystal panel; a backlight provided on a rear face of the liquid crystal panel; a detector which detects RGB output light levels of the backlight; a first controller which controls backlight current for driving the backlight so that a prescribed luminance is attained based on the RGB output light levels detected by the detector; and a second controller which controls display signals supplied to the liquid crystal panel so that a prescribed chromaticity is attained based on the RGB output light levels detected by the detector. | 03-04-2010 |
| 20090315871 | IMAGE DISPLAY SYSTEM, IMAGE SIGNAL TRANSMITTER AND IMAGE DISPLAY UNIT - An object of the present invention is to realize a transmission distortion correction system for allowing an image signal including a plurality of picture signals to be corrected, and to realize an image signal transmitter and an image display unit. The image display unit of the present invention includes: a second reference signal generation means for generating a second reference signal similar to a first reference signal regarding the image signal in which the first reference signal is inserted into each of the plurality of picture signals by the image signal transmitter; a plurality of waveform equalizers provided that correspond to the plurality of picture signals and that include a filter circuit capable of setting a characteristic thereto; and a control portion for inputting the plurality of picture signals, analyzing a characteristic of a transmission path between the image signal transmitter and the image display unit upon detecting the first reference signal in the input picture signals by comparing the first reference signal with the second reference signal, and setting a characteristic inverse to the analyzed transmission path characteristic to a filter circuit of the waveform equalizers that correspond to the input picture signals. | 12-24-2009 |
| 20090015728 | VIDEO DISPLAY DEVICE AND LUMINANCE RANGE CORRECTION METHOD - In a video display device of the present invention, a main control unit is equipped with a user interface for varying correction values set to a range correction unit and controls a range correction unit by acquiring the corresponding correction values from a storage unit in accordance with correction level information input by the user interface. The storage unit stores range correction values for the video display unit in correspondence with each piece of the correction level information input by the user interface. Thus, it is possible to correct luminance ranges to suit the user's preference without causing a large luminance reduction. | 01-15-2009 |
| 20080316436 | Pump Unit and Projector Using Same - A pump unit includes a pump body for discharging compressed air, a communication pipe including an elastic material and having one end fitted into a discharge port, and a pump fixture for fixing part of the communication pipe except for the one end fitted into the discharge port. The pump body is fixed only by the pump fixture. | 12-25-2008 |
| 20080198884 | Constant-current drive circuit - A voltage supplied from a power supply is boosted by a boosting circuit unit to generate a direct-current voltage, and the pulse-shape direct-current voltage is applied to LED while a constant-voltage control unit controls the direct-current voltage. The operation of LED is controlled by a control unit and a PWM unit. When the current is passed through LED, the constant-voltage control unit obtains information on the current passed through LED from a potential difference between both ends of a resistor, and on-and-off control of the voltage applied to LED from the boosting circuit unit is performed at a high frequency based on the information. Therefore, the voltage applied to LED can be controlled to keep the current passed through LED constant. | 08-21-2008 |
