Patents Assigned to NEC DISPLAY SOLUTIONS
  • Patent number: 9740450
    Abstract: An image display device includes: a display unit that includes a plurality of display lines; a detection unit that detects presence of an input of a predetermined position information signal; a signal output control unit that instructs whether or not to output a position information signal in accordance with a detection result by the detection unit; a signal output unit that outputs the position information signal in a case of being instructed; a display direction switching control unit that instructs switching of a vertical display direction to the display unit in accordance with the detection result; an image data input unit that receives image data including data for each display line; and an image data transmission switching unit that switches a transmission order of the data for each display line in accordance with the detection result, and transmits to the display unit the image data.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: August 22, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Nozomu Kano
  • Patent number: 9736396
    Abstract: A signal input switching circuit, including a switch circuit including a plurality of input terminals to which signals are respectively applied as input from different signal sources, and the switch circuit supplying as output thereof a signal that is applied as input by way of an input terminal selected from among the plurality of input terminals, and input control units provided corresponding to each of the plurality of input terminals belonging to the switch circuit, controlling signal sources that are connected to input terminals that were not selected by the switch circuit to not present signals to the corresponding input terminals.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: August 15, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Tsuneo Miyamoto
  • Patent number: 9717152
    Abstract: A display apparatus has a friction surface which makes friction force between a base and a support surface on a lower surface of the base that supports the display body, in which the friction surface has a high friction surface having a relatively high friction coefficient and a low friction surface having a lower friction coefficient than that of the high friction surface, and the low friction surface protrudes further than the high friction surface.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: July 25, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Tadayuki Ito, Yoshihito Mochizuki
  • Patent number: 9712794
    Abstract: A projector has a light source, image forming units, a projection lens, a first optical system and a second optical system. The image forming units form image light by adjusting, on a per-pixel basis, the intensity of light emitted by the light source. The projection lens projects the image light formed by the image forming units to the outside. The first optical system guides light of a first wavelength emitted by the light source to the projection lens, and the second optical system guides light of a second wavelength emitted by the light source to the projection lens. The f-number of the first optical system is higher than the f-number of the second optical system.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: July 18, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Eisaku Shouji
  • Publication number: 20170199450
    Abstract: A light source device includes: a phosphor unit that is provided with a phosphor; an excitation light source that supplies excitation light that excites the phosphor; a reducing optical system that reduces the luminous flux diameter of the excitation light; and a light condensing optical system that condenses, on the phosphor unit, excitation light for which the luminous flux diameter was reduced by the reducing optical system. The reducing optical system includes: a plurality of lenses including two lenses having positive power; and a lens-moving section that moves the lens back and forth along the direction of the optical axis. The lens is disposed on the excitation light source side, and has a lower power than the lens. The refractive index of the lens is equal to or smaller than the refractive indexes of the other lenses of the reducing optical system.
    Type: Application
    Filed: June 12, 2014
    Publication date: July 13, 2017
    Applicant: NEC Display Solutions, Ltd.
    Inventor: Masateru MATSUBARA
  • Patent number: 9659546
    Abstract: A display apparatus includes a detector configured to detect an infrared ray emitted from a human body; a state signal generator configured to generate a state signal including at least one of a first state signal component indicating that the human body is approaching the detector and a second state signal component indicating that the human body is leaving from the detector in response to an intensity variance of the infrared ray detected with the detector; and a controller configured to start controlling an external device upon detecting the first state signal component from the state signal generated by the state signal generator but to stop controlling the external device upon detecting the second state signal component from the state signal.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: May 23, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Tsuneo Miyamoto
  • Publication number: 20170139311
    Abstract: A projector includes: a plurality of image-forming units each including an image forming surface provided with a plurality of micromirrors; a plurality of reflecting units that are provided so as to respectively reflect the plurality of image beams formed by the image-forming units; a beam-combining unit that receives the plurality of image beams via the plurality of reflecting units and emits a combined image beam in which the plurality of image beams are combined such that the propagation directions coincide; and a projection unit that projects the combined image beam emitted from the beam-combining unit. At least two of the image-forming units are arranged such that the image-forming surface of each image-forming means lies in the same plane.
    Type: Application
    Filed: July 29, 2014
    Publication date: May 18, 2017
    Applicant: NEC Display Solutions, Ltd.
    Inventors: Noriko NAGASE, Atsushi KATO, Isao TAKAHASHI, Takashi ISHIKAWA, Hirotaka KOYAMA
  • Publication number: 20170139312
    Abstract: A light source device includes: a light source for emitting excitation light; a first optical system for condensing excitation light emitted from the light source into a rectangular shape; a fluorescent wheel having a plurality of light emitting portions emitting different color light in response to irradiation of the excitation light formed in such a manner in which each of the multiple light emitting portions is irradiated with the excitation light condensed in a rectangular shape by the first optical system; a second optical system for condensing color light emitted from each of the multiple light emitting portions in response to irradiation of the rectangularly condensed excitation light; and a rotating prism that is rotatably arranged on the optical path of the light condensed by the second light source and that shifts the optical axis of the light condensed by the second optical system as the prism turns.
    Type: Application
    Filed: August 6, 2014
    Publication date: May 18, 2017
    Applicant: NEC Display Solutions, Ltd.
    Inventor: Atsushi KATO
  • Patent number: 9635327
    Abstract: A light source unit emits a plurality of basic light beams of differing colors and a supplemental light beam of the same color as any of the colors of the plurality of basic light beams. A control unit (12), on the basis of an input picture signal that is received as input, supplies a first modulating signal for modulating each basic light beam that accords with the color of each pixel of an image indicated by the input picture signal and a second modulating signal for modulating the supplemental light beam in accordance with the specific color level in each pixel that indicates the degree of similarity between the color of the pixel and, of the colors of the plurality of basic light beams, a prescribed color that differs from the color of the supplemental light beam. Modulation units (108, 109, 110) modulate and emit the basic light beams in accordance with the first modulating signal and modulate and emit the supplemental light beam in accordance with the second modulating signal.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 25, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Takeshi Morimoto
  • Patent number: 9612509
    Abstract: Provided is a vibrating body mounting structure capable of reducing vibrations generated from a plurality of vibrating bodies. Vibrating body mounting structure (48) includes base member (40), a plurality of retaining members (39, 45), and connecting damper (49). The retaining members include first portions (39a, 45a) secured to the base member, and second portions (39b, 45b) adjacent to the first portions and retaining vibrating bodies (24, 25). The connecting damper connects second portion (39b) of one retaining member (39) of the plurality of retaining members to second portion (45b) of the other retaining member (45) of the plurality of retaining members.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: April 4, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Motoyasu Utsunomiya
  • Patent number: 9606428
    Abstract: Provided is an illuminating optical device that can reduce lowering of luminance in a display mode for enhancing color reproducibility. A multiple number of light source units (11, 19, 20) each emit a different color of light. Color wheel (28) includes multiple transmissive regions that each transmit a different color of light and that moves the point on which the incident light from each light source unit falls, over the transmissive regions as the wheel rotates. A storage (50) stores a multiple number of lighting pattern information items each item providing a lighting pattern to turn on each light source unit in a different period of lighting. A controller (60) receives a select signal for selecting one of the multiple lighting patterns to turn on each light source unit in accordance with the lighting pattern information that provides the lighting pattern selected by the select signal.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 28, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Masateru Matsubara
  • Patent number: 9591259
    Abstract: A control unit determines the content of a video based on an input video signal based on results of determination utilizing a monochrome determination unit and a text determination unit. Based on a display mode according to a result of the content determination, the control unit displays an image corresponding to the input video signal on a display panel.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 7, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Yutaka Arai
  • Patent number: 9584780
    Abstract: The projector comprises: at least one light source; a light separation unit separating light emitted from the light source into a first and second lights in different wavelength bands; a TIR prism through which the first and second lights pass; an optical modulating element irradiated with and modulating the first and second lights to emit the modulated first and second lights toward the TIR prism; a projection lens expanding and projecting the light which is modulated by the optical modulating element and passes the TIR prism; a rotating prism which is rotatably arranged in the light path between the light separation unit and the TIR prism and emits, from different positions in accordance with rotation, the first and second lights emitted from the light separation unit; and a control unit which, when the image signals representing a first and second images are supplied, causes the optical modulating element to perform modulation according to the image signal of the first image with regard to the area irradia
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: February 28, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Atsushi Kato
  • Patent number: 9575711
    Abstract: Each of liquid crystal display apparatuses (10), forming a multi-image display system, includes an image signal processing part (2) which determines a write speed of an image signal based on the number of liquid crystal display apparatuses (10) being aligned in a vertical direction with respect to the lines of an image display device (3) in the multi-image display system. Additionally, the image signal processing part (2) shifts write start timing of the image signal display device (3) based on the location of the corresponding apparatus within the liquid crystal display apparatuses (10) being aligned in the vertical direction with respect to the lines, thus displaying a display image of the corresponding apparatus in the image display device (3) at the determined write speed.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: February 21, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Toshiyuki Noguchi
  • Patent number: 9575403
    Abstract: An illumination optical system is provided with: a lens that condenses first luminous flux emitted from an optical fiber at an angle of divergence of ?1; a lens that condenses second luminous flux that has a color that is different from the color of the first luminous flux and that is emitted from an optical fiber at an angle of divergence of ?2 (??1); and a dichroic mirror that is provided at the position at which the optical axis of the lens intersects at a right angle with the optical axis of the lens, that transmits the first luminous flux that is irradiated from the lens, and that reflects the second luminous flux that was irradiated from the lens in the direction in which the first luminous flux was transmitted.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: February 21, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Eisaku Shouji
  • Publication number: 20170039912
    Abstract: An image correction device includes: a first target unevenness characteristic calculation unit that calculates a first target unevenness characteristic based on a first uncorrected unevenness characteristic and a correction amount, the first uncorrected unevenness characteristic being an uncorrected unevenness characteristic at a first gradation, the uncorrected unevenness characteristic being a characteristic of brightness unevenness of a display panel when uncorrected, the correction amount being calculated based on a backlight drive value and a black level; a second target unevenness characteristic calculation unit that calculates a second target unevenness characteristic based on a second uncorrected unevenness characteristic and the backlight drive value, the second uncorrected unevenness characteristic being the uncorrected unevenness characteristic at a second gradation; and a correction data generation unit that generates correction data for each gradation for correcting an image signal, based on the
    Type: Application
    Filed: May 16, 2014
    Publication date: February 9, 2017
    Applicant: NEC Display Solutions, Ltd.
    Inventor: Katsuyuki MATSUI
  • Patent number: 9565730
    Abstract: A backlight device includes: a light emitting unit that includes a plurality of light sources having different light emission colors from each other; a detection unit that detects light emission states of the plurality of light sources; a temperature sensor that measures a temperature in a proximity of the plurality of light sources; a brightness conversion unit that converts values indicating the detected light emission states to obtain a detection value for each color of the light emission colors; and a calculation unit that corrects the obtained detection value for each of the light emission colors by using information indicating a relationship between the measured temperature and a correction value, and determines drive values for the light sources based on the corrected detection value.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: February 7, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Katsuyuki Matsui
  • Patent number: 9557013
    Abstract: Provided is an illumination optical system capable of emitting monochromatic light having high luminance while taking safety into consideration. The illumination optical system includes a first light source configured to emit monochromatic coherent light having a first peak wavelength that belongs to the wavelength region of visible light, a second light source configured to emit monochromatic incoherent light having a second peak wavelength that belongs to a wavelength region exhibiting the same color as that of the coherent light, and a dichroic mirror configured to mainly reflect one of the coherent light and the incoherent light while mainly transmitting the other, and synthesize the optical paths of the coherent light and the incoherent light.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: January 31, 2017
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Noriko Nagase
  • Patent number: 9548030
    Abstract: A light quantity measurement unit measures a quantity of light of a light source that has a first light-emitting element that emits light of a first wavelength band and a second light-emitting element that emits light of a second wavelength band. The light quantity measurement unit includes first and second filters having the first and second wavelength bands as the detection wavelength bands.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: January 17, 2017
    Assignees: NEC CORPORATION, NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Junichi Miyamoto, Shuichi Nakanishi
  • Patent number: 9530361
    Abstract: A driving device includes a drive normalization part configured to calculate a reference light quantity measurement which is estimated when a backlight is driven using the predetermined reference BL-drive value based on a current BL-drive value and a light quantity measurement of the backlight; a low-pass filter configured to calculate a moving average among a plurality of reference light quantity measurements being temporarily held, thus outputting the smoothed reference light quantity measurement precluding noise; and a BL-drive value calculation part configured to calculate a target BL-drive value which allows the smoothed reference light quantity measurement to match the target light quantity corresponding to a user's setting of luminance.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: December 27, 2016
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Katsuyuki Matsui