Patents Examined by Dennis Joseph
  • Patent number: 8686925
    Abstract: An organic light emitting diode display device and a driving method thereof are disclosed. The organic light emitting diode display device according to an embodiment of the invention comprises a display panel including a plurality of data lines, a plurality of gate line pairs crossing the data lines, and a plurality of light emitting cells which include an organic light emitting diode device, first and second cell driving circuits for alternately driving the organic light emitting diode device; a data voltage generator supplying a data voltage of a first polarity to the data lines; a compensation voltage generator supplying a compensation voltage of a second polarity to the data lines; and a scan driver for sequentially supplying scan pulses to the gate line pairs, wherein the first and second cell driving circuits are alternately supplied with the data voltage and the compensation voltage in response to the scan pulses to alternately driven the organic light.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: April 1, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Injae Chung, Kiyong Kim, Chulsang Jang, Insu Joo, Woojin Nam
  • Patent number: 8674974
    Abstract: The present invention relates to a display device. There is disclosed a power supply unit and of a display device and a method thereof that can reduce frequency interference by electro-magnetic interference (EMI).
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: March 18, 2014
    Assignee: LG Electronics Inc.
    Inventor: Joo-Byung Lee
  • Patent number: 8669966
    Abstract: Systems and methods for implementing touchscreen displays that utilize a transmitter system to dynamically scan at least one light beam across a surface of interest such that substantially every point in a region above the surface of interest is dynamically scanned by a light beam from two directions, a receiver system to receive and detect the at least one dynamically scanned light beams, and a processor configured to determine locations of contact are provided. The systems and methods may utilize a transmitter system that includes dynamic transmitters, which may be in the form MEMS micromirrors used in conjunction with infrared semiconductor lasers.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: March 11, 2014
    Inventor: Jonathan Payne
  • Patent number: 8624801
    Abstract: A display device comprises a pixel structure. The pixel structure includes a first transistor having a gate and circuitry to initially set the first transistor gate at a first voltage. In response to a data signal received over a data line of the display device, the first transistor gate is set at a second voltage. The first transistor gate voltage transitions from the second voltage to a third voltage that is higher than the second voltage by a reference voltage. A light element is coupled to the first transistor and configured to emit light in response to a current through the light element.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: January 7, 2014
    Assignees: Chimei Innolux Corporation, Chi Mei EI Corporation
    Inventors: Hong-Ru Guo, Ming-Chun Tseng, Chien-Hsiang Huang
  • Patent number: 8614657
    Abstract: An organic light emitting display device operating in a concurrent (e.g., simultaneous) emission method, which includes a first power driver configured to apply first power, which changes between a first low level and a first high level, to pixels of the display unit, and a second power driver configured to apply second power, which changes between a second low level and a second high level, to the pixels, wherein each of the pixels includes an organic light emitting diode, a driving transistor configured to control an amount of current supplied to the organic light emitting diode, and an initializing transistor coupled to an anode electrode of the organic light emitting diode and configured to be turned on during a reset period in one frame to supply a reset voltage, which is lower than the first high level of the first power, to the anode electrode of the organic light emitting diode.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: December 24, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myeon Han, Baek-Woon Lee
  • Patent number: 8576487
    Abstract: Disclosed is a video display system comprising a spatial light modulator, such as a DMD modulator. The system uses a light source and color-wheel filter that is interposed between the light source and the spatial light modulator, the color-wheel filter being divided into primary color segments and at least one neutral density (“ND”) segment that is complementary to at least one of the primary color segments and having a transmissivity that is lower than that of its corresponding primary color segment. At the border between the ND segment and its complementary primary color segment is an area that can be referred to as an ND spoke. The video display system modulates light from this ND spoke area along with light from the other segments.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: November 5, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: Harold E. Bellis, II, Gregory J. Hewlett
  • Patent number: 8552933
    Abstract: The invention provides a light emitting device and an element substrate in which a luminance variation of light emitting elements among pixels due to variation in characteristics of driving transistors can be suppressed even without suppressing the off-current of a switching transistor low or increasing the capacitance of a capacitor. A gate of a first transistor is connected to a first scan line, and a gate of a second transistor is connected to a second scan line. A connection between a signal line and a gate of a third transistor is controlled by the first transistor. The second transistor and the third transistor are connected in series between a pixel electrode of a light emitting element and a power supply line. The signal line, the second scan line and the power supply line are disposed in parallel, while the first scan line is crossed with the signal line, the second scan line and the power supply line.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: October 8, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Mitsuaki Osame, Yu Yamazaki, Aya Anzai, Ryota Fukumoto
  • Patent number: 8542397
    Abstract: To provide a control unit including a touch panel display capable of presenting preview display of multiple pages of document images on the display panel, the touch panel display includes: a binding position indicating controller; a binding process preview displaying controller that displays preview images of recording paper bound at the specified position; a paper binding position-linked scrolling display switching controller that, when the binding position in the printed paper is modified, switches the direction of scrolling preview display so as to be suited to the recording paper bound at the modified binding position.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: September 24, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeshi Yamaguchi, Masato Shiozaki, Hirotaka Kodama, Kazuyuki Ogida, Atsuhiko Murakami, Takayuki Kawasato
  • Patent number: 8537076
    Abstract: The invention relates to a video circuit (1) for processing video signals which show images on a display panel with linear light transition, comprising a gamma correction circuit (3), a quantizer (11) and a sub-field generator circuit (8). To save computing time, a random-access memory (7) replaces the quantizer (64).
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: September 17, 2013
    Assignee: Entropic Communications, Inc.
    Inventors: Petrus Maria De Greef, Rob Anne Beuker
  • Patent number: 8519948
    Abstract: A method is disclosed that includes outputting haptic feedback based on a movement of an object in a first direction from a first position to a second position. The haptic feedback is discontinued when the object is moved in a second direction opposite the first direction subsequent to the movement in the first direction. The haptic feedback is output again when the object moves past the second position in the first direction.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 27, 2013
    Assignee: Immersion Corporation
    Inventors: Juan Manuel Cruz-Hernandez, Danny A Grant, Alex S Goldenberg, Daniel H Gomez
  • Patent number: 8519947
    Abstract: A method is disclosed that includes outputting haptic feedback based on a movement of an object in a first direction from a first position to a second position. The haptic feedback is discontinued when the object is moved in a second direction opposite the first direction subsequent to the movement in the first direction. The haptic feedback is output again when the object moves past the second position in the first direction.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 27, 2013
    Assignee: Immersion Corporation
    Inventors: Juan Manuel Cruz-Hernandez, Danny A Grant, Alex S Goldenberg, Daniel H Gomez
  • Patent number: 8514191
    Abstract: A touch panel sensing circuit senses a voltage variation of a coupling capacitor formed between a first directional signal line and a second directional signal line separated from the first directional signal line by a dielectric when an object approaches. The sensing circuit eliminates the parasitic capacitance effect on the signal lines and rapidly accumulates charges for an amplifier in sensing to thereby increase the operational speed of the sensing circuit.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: August 20, 2013
    Assignee: Orise Technology Co., Ltd.
    Inventors: Hsin-Hao Wang, Yen-Lin Huang
  • Patent number: 8482538
    Abstract: An information input device includes an input panel and one or more circuits. The one or more circuits are configured to determine first, second and third representations of possible proximity of an object to an input panel from first, second and third input frames, respectively. The second input frame is generated after the first input frame, and the third input frame is generated after the second input frame. The one or more circuits are configured to determine whether proximity of the object to the input panel is detected for the second input frame, based on the third representation, if the first and second representations are not similar.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: July 9, 2013
    Assignee: Japan Display West Inc.
    Inventors: Ryoichi Tsuzaki, Kazunori Yamaguchi
  • Patent number: 8456386
    Abstract: A data driver including a shift register unit configured to receive a first clock signal, a second clock signal, and a start pulse, and to generate a sampling pulse, a sampling latch unit configured to receive and output bits and reversed bits of digital data, in correspondence with the sampling pulse, a holding latch unit configured to receive the bits and reversed bits output by the sampling latch unit, and to output the bits and reversed bits, in correspondence with a first enable signal and a second enable signal, and a digital-to-analog converter configured to receive the bits and reversed bits output by the holding latch unit and to generate an analog signal corresponding to values of the received bits and reversed bits.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: June 4, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Dong Yong Shin
  • Patent number: 8451299
    Abstract: To provide a hold-type display device having a fine luminance efficiency while suppressing generation of motion blur. A controller according to the invention adjusts a signal outputted to a hold-type image display panel, which includes: a double-speed drive converting part which divides one frame of an inputted video signal to a plurality of sub-frames; a color converting part which converts a video signal of three primary colors including the plurality of sub-frames to a video signal of four or more colors including the three primary colors and a compound color; and a sub-frame converting part which converts, the video signal converted by the color converting part, to a signal having a plurality of different gradations whose average luminance value becomes equivalent to luminance of the video signal converted by the color converting part, and takes each of the plurality of gradations as each of gradations of the plurality of sub-frames.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 28, 2013
    Assignee: NLT Technologies, Ltd.
    Inventor: Hiroaki Kimura
  • Patent number: 8441444
    Abstract: An interface device providing haptic feedback to a user is in communication with a host computer. The device includes a housing, at least one sensor for detecting user input, and an actuator assembly. The actuator assembly includes a grounded flexure suspension coupled to an inertial mass which moves when the actuator assembly is energized to cause inertial sensations. The inertial mass includes a pole piece surrounding a magnet, and a grounded coil between magnet and pole piece causes the motion of the inertial mass when current is flowed therethrough. Another embodiment provides directional haptic feedback to a user and includes at least two actuator assemblies oriented such that the inertial masses oscillate substantially orthogonally, and can be controlled to output the inertial sensations approximately along a single axis having a desired orientation.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: May 14, 2013
    Assignee: Immersion Corporation
    Inventors: David F. Moore, Erik J. Shahoian, Bruce M. Schena
  • Patent number: 8411060
    Abstract: Systems and methods for processing a swipe gesture are provided. A method includes receiving an indication of the swipe gesture via a touch screen. The indication of the swipe gesture includes a first event position on the touch screen associated with a first event time and a second event position associated with a second event time. The method also includes calculating a gesture speed for the swipe gesture. The method also includes calculating a reconstructed event position based on the gesture speed and one of the first event position and the second event position. The method also includes, if the reconstructed event position is closer to the edge than the edge threshold, providing an output associated with taking a first action. The method also includes, if the reconstructed event position is further from the edge than the edge threshold, providing an output associated with taking a second action.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: April 2, 2013
    Assignee: Google Inc.
    Inventors: Jerome F. Scholler, Yusuf Ozuysal
  • Patent number: 8373727
    Abstract: Disclosed herewith a liquid crystal display apparatus, which includes a liquid crystal display panel that employs the delta arrangement; a subtractive color processing circuit that carries out a subtractive color processing for input image data, thereby generating subtractive color image data; and data line driving circuit that drives the liquid crystal display panel in response to the subtractive color image data. The subtractive color processing circuit carries out a weighting processing that increases or decreases the subtractive color image data according to a line that includes a sub-pixel to be subjected to a subtractive color processing, then carries out an error diffusion processing for the result of the weighting processing, thereby generating subtractive color image data. The subtractive color processing circuit carries out the weighting processing so as to increase the subtractive color image data corresponding to a line and decrease the subtractive color image data corresponding to another line.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: February 12, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Hirobumi Furihata, Takashi Nose
  • Patent number: 8362987
    Abstract: A method and device for manipulating color in a display is disclosed. In one embodiment, a display comprises interferometric display elements formed to have spectral responses that produce white light. In one embodiment, the produced white light is characterized by a standardized white point.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: January 29, 2013
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 8363001
    Abstract: The present invention provides a liquid crystal display device capable of shortening the time required for stabilizing the brightness and the chromaticity to the temperature change. The input of an LED driver is connected to the output of a PWM controller, so that the electric power supplied to the respective LED groups of red, green and blue are controlled with a PWM method.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: January 29, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Hideki Tanizoe, Taro Kimura, Hiroshi Ueno, Hiroshi Kato