Color Sequential Patents (Class 348/742)
  • Patent number: 11322173
    Abstract: An apparatus for generating a score signal representing the quality of an audio or video signal supplied to the apparatus is proposed. The apparatus comprises: an input for supplying an audio or video signal, a computing unit implementing a neural network, the computing unit being supplied with the audio or video signal, and producing a score signal representing the quality of an audio or video signal supplied representing at least one predefined quality parameter of the audio or video signal, the neural network being set up by being trained with training data of a specific transmission standard and/or codec used for generating the audio or video data.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 3, 2022
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Baris Güzelarslan
  • Patent number: 11314156
    Abstract: A lighting system and a projection device with enhanced functionality includes a light source in the lighting system for emitting first light, a first wavelength selection structure, and a second wavelength selection structure. The first wavelength selection structure includes a wavelength selection portion for transmitting the first light in a first target wavelength and a first light-transmitting portion for transmitting the first light. The light emitted then from the first wavelength selection structure is defined as second light. The second wavelength selection structure receives the second light and applies a supplementary portion for transmitting the second light in a second target wavelength and a second light-transmitting portion for transmitting the light. The light emitted from the second wavelength selection structure is adjustable as to colors, as to low or high color saturation, and as to low or high brightness of the projection image.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 26, 2022
    Assignees: HONG FU TAI PRECISION ELECTRONS (YANTAI) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shi-Kai Huang
  • Patent number: 11252388
    Abstract: A method includes obtaining, from an image sensor of a vehicle, an image signal that represents a vector of a plurality of input measured color values; determining weighting values as a function of the input measured values using a determination rule; ascertaining model matrices from a plurality of stored model matrices as a function of the weighting values, each of the model matrices generated for possible input measured values using a training rule; generating a color reconstruction matrix using the ascertained model matrices and at least one of the determined weighting values according to a generating rule; and applying the generated color reconstruction matrix to the measured color value vector in order to produce an output color vector that represents a processed image signal.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: February 15, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Marc Geese, Ulrich Seger
  • Patent number: 11170733
    Abstract: A projector and a projection method are provided. The projector is coupled to a display card and includes a light source, a light valve, a projection lens, and a processor. The light source provides an illumination beam. The light valve converts the illumination beam into an image beam. The projection lens projects the image beam to the outside of the projector to form an imaged image. The processor receives an input image signal from the display card, and generates a control signal corresponding to the input image signal according to a refresh rate of the input image signal. When the refresh rate is greater than a threshold, the imaged image has a first resolution. When the refresh rate is less than the threshold, the light valve performs a pixel shifting operation, so that the imaged image has a second resolution. The first resolution is less than the second resolution.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: November 9, 2021
    Assignee: Coretronic Corporation
    Inventors: Hsin-Yueh Chang, Li-Ming Chen
  • Patent number: 11025870
    Abstract: A projector control system and a control method corresponding to same. The system includes a main controller, a dynamic current adjusting module, a color wheel controller, a color wheel rotation speed feedback module, and a light source; the dynamic current adjusting module includes a DLP module, a light source controller, and a power supply module; the color wheel rotation speed feedback module generates a feedback signal; the DLP module receives the feedback signal, and the DLP module receives dynamic brightness information and sends processed dynamic brightness information and a control signal to the light source controller according to the feedback signal; the light source controller controls the power module according to the received processed dynamic brightness information and the control signal sent by the DLP module to turn on a power switch and output a corresponding current value.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: June 1, 2021
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Kairong Chen, Hao Jiang, Qitao Song, Yi Li
  • Patent number: 11006086
    Abstract: A projector optical system includes a LED (Light Emitting Diode) light source, an optical rod polarization conversion module, an overlapped lens module, a first mirror, a focusing lens, a LCD light valve, a field lens, a second mirror and a projection lens, which are sequentially arranged according to a traveling direction of lights. The optical rod polarization conversion module is for integration and polarized light conversion of natural lights emitted from the LED light source. The overlapped lens module is for superimposing integrated lights on the LCD light valve, so as to greatly improve light utilization of a projector and obviously save power supply consumption. Meanwhile, uniform illumination to the LCD light valve is realized, which obviously improves illumination uniformity and illumination efficiency. A projector optical engine is further provided, including the projector optical system.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: May 11, 2021
    Assignee: NANHUA INTELLIGENT PRECISION MACHINE (SHENZHEN) CO., LTD.
    Inventor: Hanwen Guo
  • Patent number: 10989652
    Abstract: A metrology system for substrate processing includes an optical metrology station including a plurality of optical sensors to measure spectra from a plurality of measurement locations on a substrate. A plurality of fiber cables are connected to the plurality of optical sensors. A spectrometer is selectively connected to the plurality of fiber cables. A mass metrology station measures at least one of a mass or mass change of the substrate. A controller includes a modelling module to generate thickness values at the plurality of measurement locations based on the spectra from the plurality of measurement locations and a learned model. A spatial modelling module generates a spatial thickness distribution model for the substrate based on the thickness values at the plurality of measurement locations from the modelling module and the at least one of the mass or the mass change from the mass metrology station.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 27, 2021
    Assignee: LAM RESEARCH CORPORATION
    Inventors: Ye Feng, Rajan Arora, Jason Shields
  • Patent number: 10955531
    Abstract: An optical device includes a light source, which is configured to emit a beam of light, and a sensor having a detection area. At least one scanning mirror is configured to scan the beam across a target scene. Light collection optics include a collection lens positioned to receive the light from the scene that is reflected from the at least one scanning mirror and to focus the collected light onto a focal plane, and a non-imaging optical element having a front surface positioned at the focal plane of the collection lens and a rear surface in proximity to the sensor and configured to spread the light focused by the collection lens over the detection area of the sensor.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 23, 2021
    Assignee: APPLE INC.
    Inventors: Robert S Upton, Andrew J. Sutton, Ariel Lipson, Noel Axelrod
  • Patent number: 10914960
    Abstract: An imaging apparatus includes a filter configured to transmit light and an image sensor configured to generate an image according to the light. The filter includes first to fourth filter regions. The first filter region transmits light of a first wavelength region, and does not transmit light of a second wavelength region. The second filter region does not transmit the light of the first wavelength region and transmits the light of the second wavelength region. The third, filter region does not transmit the light of the first, wavelength region and does not transmit the light of the second wavelength region. The fourth filter region transmits the light of the first wavelength region and transmits the light of the second wavelength region.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 9, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yusuke Moriuchi, Nao Mishima
  • Patent number: 10871674
    Abstract: The present invention relates to a device for combining light beams which interact with adjacently arranged pixels of a light modulator. The present invention furthermore relates to a device for beam combination and to a spatial light modulation device for complex-valued modulation. The invention relates to a device for beam combination, and to an optical arrangement of polarization-sensitive component parts which allows complex-valued modulation of a light field by means of a phase-modulating light modulator and a beam combiner, which is insensitive to changes in the incidence direction of the illumination wave. This document furthermore also relates to various arrangements of reflectively operating light modulators.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 22, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Patent number: 10863167
    Abstract: A stereoscopic image projection device and stereoscopic display glasses include a light source system for sequentially generating a first broad spectrum light and a second broad spectrum light; a light splitter for splitting the first broad spectrum light into a first wavelength light and a second wavelength light, each having different wavelengths, and splitting the second broad spectrum light into a third wavelength light and a fourth wavelength light, each having different wavelengths; and a controller for simultaneously controlling the first wavelength light to display a corresponding color in a left-eye image and the second wavelength light to display a corresponding color in a right-eye image, and simultaneously controlling the third wavelength light to display a corresponding color in the left-eye image and the fourth wavelength light to display a corresponding color in the right-eye image.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: December 8, 2020
    Assignee: Appotronics Corporation Limited
    Inventor: Zeqin Wang
  • Patent number: 10824062
    Abstract: The disclosure relates to an illumination system, a projection device and an illumination control method. The illumination system includes a first sensor, a second sensor and a control module. The first sensor receives a part of an excitation beam and a part of at least one converted beam scattered by a wavelength conversion module, so as to generate a first photoelectric signal. The second sensor receives a part of a first set of color light and a part of a second set of color light scattered by a filter module, so as to generate a second photoelectric signal. The control module generates a synchronization signal based on relative intensity changes of the first and second photoelectric signals. The synchronization signal is to synchronize the wavelength conversion module with the filter module, and the first set of color light and the second set of color light sequentially form an illumination beam.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: November 3, 2020
    Assignee: Coretronic Corporation
    Inventors: Chih-Hsien Tsai, Haw-Woei Pan, Yi-Hsuang Weng
  • Patent number: 10706792
    Abstract: A light source section 21 includes a red light source 22r, a green light source 22g, and a blue light source 22b, and one frame period is divided into four subfield periods. Light sources of each color respectively emit light in blue, green, and red subfield periods, and the red light source 22r and the green light source 22g emit light in a yellow subfield period. Light emission intensity of the blue light source 22b in the blue subfield period is set to twice light emission intensities of the red light source 22r and the green light source 22g in other subfield periods. Color breakup is reduced by displaying the yellow subfield, and light utilization efficiency improved by setting transmittance of a light modulation element 16 to 100% when a white signal by which each gradation of red, green, and blue becomes maximum is input. With this, a field sequential type display device which can reduce color breakup and has high light utilization efficiency is provided.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: July 7, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Ishihara, Masamitsu Kobayashi
  • Patent number: 10623685
    Abstract: Dual or multi-modulation display systems comprising a first modulator and a second modulator are disclosed. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the first and second modulator. The display system may render highlight features within a projected image by affecting a time multiplexing scheme. In one embodiment, the first modulator may be switched on a sub-frame basis such that a desired proportion of the available light may be focused or directed onto the second modulator to form the highlight feature on a sub-frame rendering basis.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 14, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Martin J. Richards
  • Patent number: 10564668
    Abstract: An electronic reading device includes an adjustable RGBW front light and an ambient light sensor. Additionally, the electronic reading device includes circuitry configured to receive a signal corresponding to a brightness level from the ambient light sensor, receive a signal corresponding to a current screen color temperature, calculate a predetermined mixture of light based on at least one of the brightness level or the current screen color temperature, Wherein the calculation allows the current screen color temperature to remain the same regardless of the brightness level, and display the predetermined mixture of light via the adjustable RGBW front light.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: February 18, 2020
    Assignee: RAKUTEN KOBO, INC.
    Inventors: Trevor Hunter, Matt Clements, George Talusan, Paul McDougall, William Chaban, Zheng Xu, Steve Li, Jeffrey Ng Thow Hing
  • Patent number: 10469808
    Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: November 5, 2019
    Assignee: MTT Innovation Incorporated
    Inventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
  • Patent number: 10281642
    Abstract: A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths. The red phosphor material is included in a phosphor sheet, and the phosphor sheet is disposed on a surface of the light-guide plate.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: May 7, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Hiroto Itoi, Ryosuke Wakaki, Ken Katsuragi, Yusaku Achi, Shingo Masui
  • Patent number: 10247875
    Abstract: A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths. The red phosphor material is included in a phosphor sheet, and the phosphor sheet is disposed on a surface of the light-guide plate.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 2, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Hiroto Itoi, Ryosuke Wakaki, Ken Katsuragi, Yusaku Achi, Shingo Masui
  • Patent number: 10197897
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 5, 2019
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 10095095
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: October 9, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 10060793
    Abstract: A method of spatially and spectrally calibrating a spectrophotometer including: a) emitting a white light illumination output from a full width illumination source; b) illuminating a test patch with the white light illumination output; c) reflecting a portion of the white light illumination output from the test patch to form a white light reflected illumination output; d) receiving the white light reflected illumination output at first, second and third rows of photosensitive elements to form a first calibration data set; e) emitting a cyan light illumination output from the full width illumination source; f) illuminating the test patch with the cyan light illumination output; g) reflecting a portion of the cyan light illumination output from the test patch to form a cyan light reflected illumination output; and, h) receiving the cyan light reflected illumination output at the second and third rows of photosensitive elements to form a second calibration data set.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 28, 2018
    Assignee: Xerox Corporation
    Inventors: David C. Craig, Robert P. Herloski, David A. Mantell, Douglas E. Proctor, Jonathan B. Hunter, Stuart Schweid
  • Patent number: 10006610
    Abstract: A laser light source is provided. The laser light source includes: a laser device; a first color wheel and a second color wheel, on both of which there are corresponding color regions, wherein the laser device emits laser which illuminates the first color wheel and the second color wheel sequentially, and exits from the color regions on the second color wheel; a first marker and a second marker arranged respectively on the first and the second color wheels; a first sensor configured to detect the first marker, and to generate a first sense signal; a second sensor configured to detect the second marker, and to generate a second sense signal; and a control unit configured to synchronize the first color wheel and the second color wheel.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: June 26, 2018
    Assignees: HISNESE CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Rongrong Cui, Xinhong Lin, Jianfeng Li
  • Patent number: 9992852
    Abstract: The present invention relates to a lighting device for illuminating a target object with the objective to draw a person's attention to this target object. It alternatingly provides a relatively fast dynamic light output component and a relatively slow dynamic light output component, the former being predominantly for triggering a person's attention towards a target object, while the latter is mainly for enhancing the visual appearance of the target object, thereby keeping someone's attention for that object. For this purpose, the lighting device is arranged to provide a primary light output alternatingly comprising a first light output component and a second light output component. The lighting device comprises a switching controller for switching between the first light output component and the second light output component after a time interval. The primary light output has a perceived light intensity that remains constant over time within a margin of 10%.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: June 5, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Ralph Kurt, Wiebe Wagemans, Dragan Sekulovski
  • Patent number: 9910205
    Abstract: In one embodiment, a light-emitting device includes a light source unit which emits polarized light in a first direction, a bending portion which is irradiated with the polarized light in the first direction and bends the light in a second direction, and a lightguide member which is irradiated with the polarized light caused to bend in the bending portion. The lightguide member comprises an exit surface, bends the polarized light in a third direction, and emits the light through the exit surface. The light source unit includes a first source which emits first light, and a second source which emits second light. The bending portion includes a first incident portion which the first light enters, and a second incident portion which the second light enters.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: March 6, 2018
    Assignee: Japan Display Inc.
    Inventors: Ken Onoda, Shinichi Komura, Youichi Asakawa, Toshihiko Fukuma
  • Patent number: 9897900
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 20, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 9897903
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 20, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 9860495
    Abstract: An image projector includes a digital micro device (DMD) spatial light modulator and a rotatable actuator. The rotatable actuator is disposed in a path of light reflected from the spatial light modulator. The rotatable actuator includes a first region and a second region. The first region is tilted at a first non-normal angle with respect to an axis of rotation of the rotatable actuator. The second region is tilted at a second non-normal angle with respect to the axis of rotation of the rotatable actuator. Light reflected by the spatial light modulator and passing through the first region is displaced one pixel relative to light reflected by the spatial light modulator and passing through the second region.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: January 2, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Steven E. Smith
  • Patent number: 9835868
    Abstract: A near-eye display device includes at least one projection system configured to project an image to a target position. The projection system includes an image output module, an object lens group, an aperture-coded module, and an eyepiece. The image output module is configured to provide the image. The object lens group is configured to receive lights of the image, and includes a first lens group and a second lens group. The aperture-coded module is configured to receive the lights of the image from the first lens group and send the lights of the image to the second lens group, and the aperture-coded module sequentially provides plural coded patterns, such that the object lens group converts the image into plural relay images sequentially. The eyepiece is configured to send the relay images to the target position.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: December 5, 2017
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: June-Jei Huang
  • Patent number: 9832433
    Abstract: A laser light source is provided. The laser light source includes: a laser device; a first color wheel and a second color wheel, on both of which there are corresponding color regions, wherein the laser device emits laser which illuminates the first color wheel and the second color wheel sequentially, and exits from the color regions on the second color wheel; a first marker and a second marker arranged respectively on the first and the second color wheels; a first sensor configured to detect the first marker, and to generate a first sense signal; a second sensor configured to detect the second marker, and to generate a second sense signal; and a control unit configured to synchronize the first color wheel and the second color wheel.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 28, 2017
    Assignees: HISENSE CO., LTD., HISENSE INTERNATIONAL CO., LTD.
    Inventors: Rongrong Cui, Xinhong Lin, Jianfeng Li
  • Patent number: 9810398
    Abstract: An optical device (100) includes laser light sources (111 to 113), polarization films (121 to 123), and a stacked wave plate (130). The laser light sources (111 to 113) respectively output light of a different wavelength. The stacked wave plate (130) includes multiple wave plates (131 to 133) and induces a phase difference on polarization components of transmitted light. The polarization films (121 to 123) adjust the polarization direction of the light such that an angle between polarization directions of the light emitted by the laser light sources (111 to 113) and input to the stacked wave plate (130) becomes an angle that corrects an orientation angle difference that occurs at the stacked wave plate (130), consequent to differences in the wavelength of the light.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: November 7, 2017
    Assignee: CITIZEN WATCH CO., LTD.
    Inventor: Seiko Kato
  • Patent number: 9787957
    Abstract: An image projection apparatus includes a light source configured to emit light with a luminance according to electric power; a color wheel configured to sequentially transmit the light through multiple color filters arranged along a circumferential direction; a light modulation element configured to form an image by modulating an intensity of the light transmitted through the color wheel according to an input signal representing input image data; and a selection controller configured to select, out of a first waveform indicating temporal change in electric power supplied to the light source in a first mode and a second waveform indicating temporal change in electric power supplied to the light source in a second mode, the second waveform when a luminance value of the input signal is equal to or less than a first threshold. A brightness of the image in the second mode is lower than that in the first mode.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: October 10, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Nobuhiro Hosoi, Takahiro Kado
  • Patent number: 9621863
    Abstract: A projector including: a projecting unit including a plurality of light sources and a modulating unit configured to modulate lights emitted by the plurality of light sources, the projecting unit projecting modulated light modulated by the modulating unit; an optical system configured to optically change a projection state of the modulated light projected from the projecting unit; an optical-system adjusting unit configured to change a state of the optical system; a storing unit configured to store states of the optical system and adjustment values of light emission amounts of the respective light sources for adjusting white balance of the modulated light in association with each other; and a light-emission-amount adjusting unit configured to adjust the light emission amounts of the respective light sources on the basis of the adjustment values corresponding to the states of the optical system.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: April 11, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kengo Mizuno
  • Patent number: 9482937
    Abstract: An illumination system including a plurality of light source units, at least one light concentrating unit, at least one taper tunnel and a light consolidating unit is provided. The light concentrating unit corresponds to and is disposed beside one of the light source units. The light concentrating unit has a first illuminating surface, the light source unit corresponding to the light concentrating unit has a second illuminating surface, and the other light source units not corresponding to the concentrator have a third illuminating surface, respectively. The concentrator is disposed between the taper tunnel and the light source unit, and the taper tunnel has a fourth illuminating surface. The light consolidating unit has a fifth illuminating surface. The area of the fourth illuminating surface, and each of the third illuminating surfaces corresponds to each other. A projection apparatus is also provided.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 1, 2016
    Assignee: Coretronic Corporation
    Inventor: Chuan-Te Cheng
  • Patent number: 9383496
    Abstract: A lighting assembly comprises a light source and a light guide having a light input edge and a light output surface. Light from the light source enters the light input edge and is propagated within the light guide by total internal reflection. A spectrum adjuster is adjustable or selected to achieve a desired spectrum of the light within the light guide.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: July 5, 2016
    Assignee: Rambus Delaware LLC
    Inventors: Jeffery R. Parker, Timothy A. McCollum, Michael D. Mayer
  • Patent number: 9350959
    Abstract: A liquid crystal display device 10 includes a liquid crystal panel 11, a backlight unit 12, a panel controller 50, and a backlight controller 51. The liquid crystal panel 11 includes red pixels RPX, blue pixels BPX, and green pixels GPX. The backlight unit 12 includes magenta LEDs 17M and green LEDs 17G. The panel controller 50 is for controlling the liquid crystal panel 11 such that one frame display period includes a first red and blue display period, a second red and blue display period, a first green display period, and a second green display period. In the first and the second display periods, the red pixels RPX and the blue pixels BPX are driven. In the first and the second green display periods, the red pixels RPX and the green pixels GPX are driven.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 24, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Mitsuru Hosoki
  • Patent number: 9223193
    Abstract: There is provided a projection-type display apparatus which solves the problem that when an amount of electric power applied to light sources is adjusted, the amount of electric power involved in the cooling of LEDs becomes greater than necessary. Coolers (107R, 107G, 107B) cool light sources (103R, 103G, 103B). Light sensor (111) detects the brightness of a surrounding area. Light case temperature detectors (112R, 112G, 112B) detect case temperatures which are the temperatures of cases of light sources (103R, 103G, 103B). Light source forward voltage detectors (113R, 113G, 113B) detect forward voltages of light sources (103R, 103G, 103B). Light source forward current detectors (114R, 114G, 114B) detect forward currents of light sources (103R, 103G, 103B). Adjuster (117) adjusts the amount of cooling power of coolers (107R, 107G, 107B) based on the forward voltage, the forward current, and the case temperatures.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: December 29, 2015
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Hiroshi Kato
  • Patent number: 8944605
    Abstract: There is disclosed a laser projector and a method of processing a signal thereof. The laser projector includes a plurality of laser sources configured to generate lasers, a controller configured to control each of the generated lasers to be incident on a specific region of a screen with a time difference, and a scanner configured to scan each of the lasers on the screen.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: February 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jaewook Kwon, Junghwan Choi, Junghoon Seo, Chanyoung Yoon, Yongki Kim, Sangkeun Lee
  • Patent number: 8902153
    Abstract: A color display has continuous areas of a single color covering a plurality of sub-pixel electrodes. Each sub-pixel of a given color has sub-pixels of the same given color disposed along at least two of its adjacent edges. Each area of a single color may cover a 2×2 array of sub-pixel electrodes. The colors used may be red/green/blue/white (RGBW), red/green/blue/yellow (RGBY), or orange/lime/purple/white.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: December 2, 2014
    Assignee: E Ink Corporation
    Inventors: Alain Bouchard, Thomas H. Whitesides, Michael D. Walls, Steven P. Dudek
  • Publication number: 20140333843
    Abstract: A video display system includes a light source configured to generate light and a substrate having a plurality of pixels deposited on a first side of the substrate. Each of the pixels is formed from a plurality of photo-luminescent dyes, and the light source is configured to project light onto the first side of the substrate to illuminate at least a subset of the photo-luminescent dyes in a raster pattern to generate an image. In another embodiment omitting the substrate, the photo-luminescent dyes forming the pixels are deposited directly onto a screen.
    Type: Application
    Filed: July 29, 2014
    Publication date: November 13, 2014
    Inventors: Donald P. Bilger, Mahendra S. Dassanayake
  • Patent number: 8860653
    Abstract: A method for controlling characteristics of an electronic device based on ambient light levels is provided. In one embodiment, the method includes receiving light at an ambient light sensor of a device and measuring components, such as color components, of the visible light. The component levels may be weighted differently by factors that vary based on the intensity of the light received by the ambient light sensor. Also, the brightness level of a light source in the device or color output of the device may be controlled based on the weighted component levels. Additional methods, systems, and devices relating to control of an electronic device based on sensed ambient light are also disclosed.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: October 14, 2014
    Assignee: Apple Inc.
    Inventors: Peter H. Mahowald, Ulrich T. Barnhoefer
  • Patent number: 8810734
    Abstract: A portable digital television (DTV) comprises a processor, a channel and volume changing button arrangement, and a navigational button arrangement. Either or both button arrangements can be used in at least a bi-modal operation. In a first mode of operation, the button arrangements provide their normal functions, and in the second mode of operation, the button arrangements provide an interactive application interface to the user. Preferably, one of the two button arrangements is selected for the bi-modal operation. The selected button arrangement is associated with at least an optical element for lighting the button arrangement. The controller operates the optical element such that the selected button arrangement has one color in one mode of operation and has a different color in the other mode of operation.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 19, 2014
    Assignee: Thomson Licensing
    Inventor: Eric Andrew Dorsey
  • Publication number: 20140198259
    Abstract: A vibrating mirror device includes a mirror portion, a driving portion including a detecting electrode that detects an amount of deformation of a piezoelectric element when driving the mirror portion by applying a voltage to cause the piezoelectric element to deform, an insulating layer formed on a top face of the piezoelectric element, and a first lead interconnection that is formed on the top face of the insulating layer, that contacts the detecting electrode, and that extends to a region outside of the driving portion.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 17, 2014
    Applicant: FUNAI ELECTRIC CO., LTD.
    Inventors: Manabu Murayama, Kouichi Kugo, Naoki Inoue
  • Patent number: 8704845
    Abstract: Methods and systems for displaying full-color three-dimensional imagery are provided. A first color set, having a first color spectrum, is defined to include a first set of LEDs. The first color set is assigned to a first color-coded image perspective. A second color set, having a second color spectrum, is defined to include a second set of LEDs. The second color set is assigned to a second color-coded image perspective. The full-color three-dimensional imagery is caused by activating, alternatively, at least two LEDs of the first color set or the second color set and one LED of a remaining color set and displaying the three-dimensional image based on the first image perspective and the second image perspective.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: April 22, 2014
    Assignee: Doubleshot, Inc.
    Inventor: Miles L. Scott
  • Patent number: 8704844
    Abstract: In embodiments of power saving field sequential color (FSC), an illumination source illuminates pixels of a displayable image by sequentially generating RGB (red, green, blue) components of a pixel in a timed sequence of field sequential color. The pixels of a displayable image may also include a white component derived from the RGB components. An illumination reduction algorithm is implemented to determine the highest RGB (or RGBW) components from any of the pixels of the displayable image. The highest RGB (or RGBW) components can be determined from any combination of the same or different pixels of the displayable image. The illumination reduction algorithm then divides each of the highest RGB (or RGBW) components by a maximum brightness value to generate respective RGB (or RGBW) component factors. A display controller then processes each pixel of the displayable image for display according to the RGB (or RGBW) component factors.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 22, 2014
    Assignee: Microsoft Corporation
    Inventors: Rod G. Fleck, Derek Leslie Knee
  • Patent number: 8696143
    Abstract: A projection system having a first tilting mirror matrix, a second tilting mirror matrix, and an imaging lens, which projects the first tilting mirror matrix onto the second tilting mirror matrix, wherein each tilting mirror matrix has multiple tilting mirrors, the tilting axes of which are positioned in a modulator surface plane. The imaging lens includes a first lens and an imaging mirror, and the imaging mirror forms an aperture stop of the imaging lens, wherein the aperture diaphragm includes an angle of other than 90° with the normal of the modulator surface of the first tilting mirror matrix without taking into account any optical path folds.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: April 15, 2014
    Assignee: Carl Zeiss AG
    Inventors: Enrico Geissler, Christoph Nieten, Guenter Rudolph, Marco Pretorius
  • Patent number: 8542324
    Abstract: Colors of images and videos are modified to make differences in the colors more perceptible to colorblind users. An exemplary recoloring process utilizes a color space transformation, a local color rotation and a global color rotation to transform colors of visual objects from colors which may not be distinguishable by the colorblind user to colors which may be distinguishable by the colorblind user.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 24, 2013
    Assignee: Microsoft Corporation
    Inventors: Meng Wang, Linjun Yang, Xian-Sheng Hua, Bo Liu
  • Patent number: 8471888
    Abstract: Exemplary methods and systems relate to telepresence at mobile devices. Aspects comprise dynamic configuration of video provided from a server that intermediates between a mobile device and a telepresence system during a telepresence session. The server receives high definition video from the telepresence system and transcodes into a format that can indicated by the mobile device. The mobile device can dynamically update the format in response to real-time battery life and network interface status. A progressive reduction in bandwidth and power consumptive activities can be implemented. The device can implement face detection and face centering, front/back mobile device camera switching, and automatic contrast control and other video quality controls in an outgoing video stream.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: June 25, 2013
    Assignee: Research In Motion Limited
    Inventors: Richard John George, Brian Alexander Oliver
  • Patent number: 8421815
    Abstract: A system and method for displaying an image are provided. In one embodiment, the method includes receiving a data stream representing a frame of an image. The data stream may indicate a first color pixel cluster corresponding to a first color and a second color pixel cluster corresponding to a second color. The first color pixel cluster and the second color pixel cluster may be displayed. The first color pixel cluster may be different from the second color pixel cluster.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: April 16, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Andrew G. Huibers, Michael T. Davis, Henry W. Neal, James N. Hall
  • Publication number: 20130050590
    Abstract: A projection control apparatus for controlling a projection apparatus is configured to: receive a video signal including a plurality of color components; extract, as control information, information of a specific color component for each frame of the received video signal; generate, frame by frame, projection control information for controlling operation of the projection apparatus based on the extracted control information; and provide the generated projection control information to the projection apparatus.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 28, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Toshiyuki Nobutani
  • Patent number: RE45504
    Abstract: Micro-electromechanical display device (“MDD”)-based multimedia projectors (90, 120) of this invention employ an arc lamp (32), a color modulator (42), and anamorphic illumination systems (94, 121) for optimally illuminating a MDD (50, 76) to improve projected image brightness. MDDs employ off-axis illumination wherein incident and reflected light bundles are angularly separated about a hinge axis (78, 110) and the MDD is illuminated by the anamorphic illumination systems of this invention having a slow f/# parallel to the hinge axis and a faster f/# perpendicular to the hinge axis. The resulting anamorphic light bundles (86, 88, 112, 114) illuminate and reflect more light into and off the MDD and through a fast f/# projection lens.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 5, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mark Peterson