Patents Examined by Jean Lesperance
  • Patent number: 7397456
    Abstract: The states of various kinds of control signals, such as a horizontal synchronizing signal, a vertical synchronizing signal, a display timing signal, etc., that are supplied from an external signal source to a display device, are inspected. In the states of various kinds of control signals supplied from the external signal source HOST to the display device DSP, (1) the vertical synchronizing signal (VSYNC) is converted into a display signal of red (R), (2) the horizontal synchronizing signal (HSYNC) is converted into a display signal of green (G), and (3) the display timing signal is converted into a display signal of blue (B) by a control signal inspecting circuit. The states are displayed in color and brightness on the screen of the display device DSP, so that these states can be simply visually inspected.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: July 8, 2008
    Assignee: Hitachi Displays, Ltd.
    Inventor: Yoichi Igarashi
  • Patent number: 7394457
    Abstract: A method for modifying the operation of a device responsive to the detection of a remote device is provided. In the method, the remote device is detected, and communications with the remote device are established responsive to the detection of the remote device. A determination is made as to whether a feature of the device is affected by the establishment of communications with the remote device, and an action with respect to the feature of the device is initiated.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: July 1, 2008
    Assignee: Microsoft Corporation
    Inventors: Aditha M. Adams, Adrian Mark Chandley, Carl J. Ledbetter, Dale Clark Croiser, Justin Michael Maguire, Pasquale DeMaio, Taryn K. Beck
  • Patent number: 7394449
    Abstract: A back-light apparatus for a display includes: a plurality of light emitting diodes attached on a substrate; a first common line mounted on the substrate to commonly connect first electrodes of the light emitting diodes; a second common line mounted on the substrate to commonly connect second electrodes of the light emitting diodes; a plurality of third lines connected to preceding second electrodes of the light emitting diodes and succeeding first electrodes of the light emitting diodes; first and second selection switches disconnecting the first common line and the second common line so that the light emitting diodes are connected in parallel; third selection switches for disconnecting the third lines so that the light emitting diodes are connected in series; a power unit to supply power to the light emitting diodes; and a control unit to control the first, second and third selection switches for the light emitting diodes.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: July 1, 2008
    Assignee: LG. Display Co., Ltd.
    Inventor: Jeong-Min Moon
  • Patent number: 7379052
    Abstract: A hand-held control device which fits interchangeably into a user's right or left hand. An ergonomically correct housing allows the device to fit snuggly into the grasp of the users hand and be used without creating user fatigue. The operative element in the control device may be a trackball, joystick, touch pad, or other device that can be manipulated by the user's thumb and, in conjunction with one or more switches actuated by phalangeal regions of the fingers, provides functional equivalence to a standard computer mouse or trackball. An optional band or strap may be provided to secure the control device to the user's hand such that the fingers of the hand are available for other tasks without setting the control device down. The control device may communicate with a computer or similar apparatus by a wired cable or a wireless interconnection, typically an RF or IR connection.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: May 27, 2008
    Inventor: Terry L. Dellenger
  • Patent number: 7365713
    Abstract: In a light emitting device, a variation in intensity caused by varying a threshold value of a TFT for supplying a current to a light emitting element for each pixel becomes a burden to an improvement of an image quality of the light emitting device. A voltage equal to the threshold value of a TFT (106) is held in capacitor unit (109). When a video signal is inputted from a source signal line, the voltage held in the capacitor unit is added thereto and a resultant signal is applied to a gate electrode of the TFT (106). Even when a threshold value is varied for each pixel, each threshold value is held in the capacitor unit (109) for each pixel. Thus, the influence of a variation in threshold value can be eliminated. Further, holding of the threshold value is conducted by only the capacitor unit (109) and a charge does not move at writing of a video signal so that a voltage between both electrodes is not changed. Thus, it is not influenced by a variation in capacitance value.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: April 29, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 7342562
    Abstract: By implementing reduction in power of common electrode voltages applied from a power source of a liquid crystal drive device to common electrode interconnects of a liquid crystal display panel, respectively, reduction in power consumption of the liquid crystal display panel as a whole is attained. A VCOM operation waveform in a charging process from a second voltage VCOML to a first voltage VCOMH shows that a charging current Icha represents the sum of a charging current from VCOML to a reference voltage VCI, Icha1=Cp (VCI?VCOML)/?t, and a charging current from the reference voltage VCI to the first voltage VCOMH, Icha2=Cp (VCOMH?VCI)/?t. Accordingly, power consumed by Icha1 is the reference voltage VCI×Icha1, and power consumed by Icha2 is VCI×Icha2×2.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: March 11, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Yasushi Kawase, Takesada Akiba, Kazuya Endo, Goro Sakamaki
  • Patent number: 7342559
    Abstract: A demultiplexer using sample/hold circuits, and a display device using the same. The demultiplexer includes a first sample/hold circuit group with first and second sample/hold circuits for sampling the data current according to a first sampling order during a first interval, and programming the current corresponding to the sampled and stored data to at least two signal lines during a second interval. The demultiplexer further includes a second sample/hold circuit group with third and fourth sample/hold circuits for sampling the data current according to a second sampling order during a second interval, and programming the current corresponding to the sampled and stored data to the signal lines during a third interval. The first and second sampling orders in even the even frames are different from the sampling orders in the odd frames.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: March 11, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dong-Yong Shin
  • Patent number: 7339580
    Abstract: Apparatus and methods are disclosed for simultaneously tracking multiple finger and palm contacts as hands approach, touch, and slide across a proximity-sensing, compliant, and flexible multi-touch surface. The surface consists of compressible cushion dielectric, electrode, and circuitry layers. A simple proximity transduction circuit is placed under each electrode to maximize signal-to-noise ratio and to reduce wiring complexity. Such distributed transduction circuitry is economical for large surfaces when implemented with thin-film transistor techniques. Scanning and signal offset removal on an electrode array produces low-noise proximity images. Segmentation processing of each proximity image constructs a group of electrodes corresponding to each distinguishable contact and extracts shape, position and surface proximity features for each group.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: March 4, 2008
    Assignee: Apple Inc.
    Inventors: Wayne Westerman, John G. Elias
  • Patent number: 7336287
    Abstract: A video and graphics system provides square graphics pixels to blend images having 640×480 pixels, such as graphics images provided by some set top boxes and intended to be displayed at a 12.27 MHz display sample rate, with images having 704×480 pixels, such as ITU-R 601 compliant images such as NTSC SDTV images, having oblong pixels and displayed at a 13.5 MHz display sample rate. A sample rate converter including a multi-phase-multi-tap filter is used to generate square pixels. The multi-phase-multi-tap filter provides a good balance of sharpness, smoothness, anti-aliasing and reduced ringing. The multi-phase-multi-tap filter can also be used to convert images having 320×480 pixels to images having 704×480 pixels. The multi-tap filter can be used for scan rate conversion of graphics or video images for HDTV or SDTV applications.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: February 26, 2008
    Assignee: Broadcom Corporation
    Inventors: Alexander G. MacInnis, Sheng Zhong
  • Patent number: 7336254
    Abstract: A shift register having a plurality of stages connected in cascade shifts an output signal by a plurality of clocks having different phases. Each of the stage includes an input diode to which a signal is input from a preceding stage, a capacitor for holding charge having a voltage level of the input signal, a first transistor that is turned on or off by the held voltage level to output an output signal to a following stage in synchronization with a clock signal, and a second transistor connected between the input diode and an output terminal. A control electrode of the second transistor is connected to the input diode in the following stage. The second transistor has a clamping function for discharging the accumulated charge and turning off the first transistor when the clock signal is phase-shifted.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: February 26, 2008
    Assignee: ALPS Electric Co., Ltd.
    Inventors: Chisato Iwasaki, Tatsumi Fujiyoshi, Yukimitsu Yamada, Koji Kikuchi
  • Patent number: 7336246
    Abstract: To precisely reduce fluctuations in brightness of respective light emitters when displaying an image by having a plurality of light emitters emit light, and thereby improve image quality. A display apparatus can be made of an arrangement of a plurality of pixels respectively composed of a predetermined driving circuit and a light emitter that emits light when driven by the driving circuit. Each pixel can include a correction circuit that detects an amount of light for the light emitter using a light receiver made of the same type of material as the light emitter and implements feedback control over the driving circuit based on a detection result.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: February 26, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Hirotsuna Miura
  • Patent number: 7327345
    Abstract: Liquid crystal display (LCD) systems and related methods to achieve reduced resistance of the connections between the display controller device and MLA common sub-groups or groups of signal lines of the display unit avoiding differences of contrast between adjacent lines of an LCD display unit have been achieved. In a preferred embodiment of a Multiple Line Addressing (MLA) Super Twisted Nematic (STN) LCD driver the lines of the common sub-groups are interlaced alternately from both sides of the display control device to the correspondent sides of the display unit in a way that the uppermost common sub-group is driven from a first side of the display control device, the second uppermost sub-group is driven from the side opposite to said first side, the third uppermost sub-group is driven from said first side again and so on. The number of lines per common sub-group is variable. One advantage of the interlaced scheme invented is that the overall glass routing distance is shorter hence reducing resistance.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: February 5, 2008
    Assignee: Dialog Semiconductor GmbH
    Inventors: Alastair Lefley, Toshiki Kitaguchi
  • Patent number: 7327342
    Abstract: A controller is composed of a control section, first and second memory sections, and a driver section. The control section divides first bitmap image data representative of n1 grayscale image into first and second data pieces, n1 being a natural number. The first memory section stores first storage data selected out of the first data piece and second bitmap image data representative of n2 grayscale image, n2 being smaller than n1. The second memory section stores second storage data selected out of the second data piece and the first storage data received from the first memory section. The driver section is configured to drive data lines of a display panel in response to the first and second storage data stored in the first and second memory sections, respectively.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: February 5, 2008
    Assignees: NEC Electronics Corporation, Bitboys Oy
    Inventors: Takashi Nose, Junyou Sioda
  • Patent number: 7324097
    Abstract: A level shifter that accommodates lower driving voltage of a driver circuit and has a sufficient capability of converting the amplitude of an input signal even when the voltage amplitude of the input signal is low is provided. A level shifter utilizing a current mirror circuit 150 and a differential circuit 160 is used in a portion for converting the voltage amplitude of the signal. Since the potential difference of a signal input through transistors 105 and 106 to the differential circuit 120 is amplified and outputted, the voltage amplitude can be normally converted without influence of the threshold of a transistor even when the voltage amplitude of the input signal is low.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: January 29, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Munehiro Azami, Yutaka Shionoiri, Tomoaki Atsumi
  • Patent number: 7321357
    Abstract: An input device is provided that is configured to dynamically select and control y-scrolling and x-scrolling. The input device includes a roller wheel configured to be rotated by a user; an encoder configured to encode rotations of the roller wheel; and a sensor coupled to the roller wheel, wherein the sensor is configured to control the encoder to scroll a graphical object along a first axis if the sensor is in a first state, and the sensor is configured to control the encoder to scroll the graphical object along a second axis if the sensor is in a second state.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: January 22, 2008
    Assignee: Logitech Europe S.A.
    Inventor: Patrick Monney
  • Patent number: 7310077
    Abstract: A pixel circuit for an OLED element comprises first, second, third and fourth transistors wherein controllable conduction paths of the first and second transistors are connected for receiving a data signal current, and the control electrodes thereof are connected for receiving a select signal for being enabled thereby. The third and/or fourth transistors are connected for establishing a current in the OLED element responsive to the data signal current and the select signal. Capacitance may be provided by at least one of the transistors or by additional capacitance.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 18, 2007
    Inventor: Michael Gillis Kane
  • Patent number: 7310086
    Abstract: An input device includes a navigation mechanism configured to move parallel to a shaft and to move tangential to the shaft. The input device further includes a movement detection system to detect movement of the navigation mechanism relative to the shaft.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: December 18, 2007
    Assignee: Avago Technologies ECBU IP (Singapore) PTE Ltd
    Inventors: Li Chong Tai, Ban Kuan Koay, Wai Lee Wong
  • Patent number: 7301511
    Abstract: The invention decreases the power consumption in an EL display and illumination device that each use EL elements. In an EL display or EL illumination device that use EL elements, the magnitude of the voltage or current that is applied to the EL elements during driving is set to a voltage value or current value (V1 to V2) at which the luminous efficiency of the EL elements is 80% or more (0.8P to P) of the maximum P.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: November 27, 2007
    Assignee: Seiko Epson Corporation
    Inventor: Tsuyoshi Maeda
  • Patent number: 7280104
    Abstract: It is aimed at being capable of easily changing a power supply startup procedure and complying with various display devices. A power supply circuit is provided between an instruction register of a liquid crystal driver and a power supply unit. The power supply unit is not directly supplied with a setting value registered to the instruction register from a microprocessor unit. The microprocessor unit writes setting values to the instruction register without need for the time axis. To turn on the power, the time is measured inside the power supply sequencer. Set values are sequentially input to the power supply unit. The instruction register should be also capable of registering an input timing.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: October 9, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Shin Morita, Goro Sakamaki, Toshikazu Tachibana
  • Patent number: 7280115
    Abstract: An image signal processing method adapted to an AFE device, which respectively generates first and second colors of digital signals according to first and second colors of analog signals. First, the first color of odd and even signals and the second color of odd and even signals are generated according to the first and second colors of analog signals, respectively. In a single channel mode, the first color of odd or even signal serves as the first color of digital signal for output, and the second color of odd or even signal serves as the second color of digital signal for output. In a dual channel mode, the first color of odd signal and second color of even signal are synchronously outputted, and the first color of even signal and second color of odd signal are also synchronously outputted. The first color of odd and even signals are combined to form the first color of digital signal, and the second color of odd and even signals are combined to form the second color of digital signal.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: October 9, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chi-Feng Wang, Szu-Ping Chen, Jui-Yuan Tsai, Jin-Sheng Gong