Patents Examined by Robert E. Carter, III
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Patent number: 8111227Abstract: Systems for displaying images incorporates a display device that includes a plurality of gate lines, a plurality of data lines intersecting the plurality of gate lines, a plurality of switches each having a first end coupled to a corresponding gate line and a second end coupled to a corresponding data line, a plurality of storage units each coupled to a third end of a corresponding switch for storing data received from a corresponding data line, a power line formed in parallel with the plurality of gate lines, and a plurality of coupling capacitors each having a first end coupled to the power line and a second end coupled to a corresponding data line.Type: GrantFiled: October 30, 2007Date of Patent: February 7, 2012Assignee: Chimei Innolux CorporationInventors: Ching-Yao Lin, Norio Oku
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Patent number: 8111234Abstract: A liquid crystal display apparatus including a liquid crystal display as a display unit, including the following elements: a backlight configured to illuminate the display unit from the back; and a controller configured to receive display-unit-brightness specifying information input from a user input unit and to adjust output of the backlight and contrast or Y gain of display data for the display unit in accordance with the brightness specifying information. The controller is configured to compare the brightness specifying information input by a user with a predetermined threshold, and, in the case where the brightness specifying information specifies brightness less than or equal to the threshold, adjust the contrast or the Y gain of the display data for the display unit.Type: GrantFiled: October 30, 2007Date of Patent: February 7, 2012Assignee: Sony CorporationInventor: Ryoichi Tokuyasu
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Patent number: 8106892Abstract: A touch screen driver that can be used with a resistive touch screen includes an input/output module that supplies at least one input signal to at least one of a plurality of input/output ports of the touch screen and that generates at least one output signal, in response to the at least one input signal, and in accordance with at least one control signal. A controller module generates the at least one control signal and that generates a position signal representing a resolved position in accordance with a plurality of contemporaneous touches of the resistive touch screen.Type: GrantFiled: October 29, 2007Date of Patent: January 31, 2012Assignee: Sigmatel, Inc.Inventors: Matthew D. Felder, Marcus W. May
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Patent number: 8102350Abstract: A display device and driving method are provided. A display device includes a display area that includes a plurality of pixel cells in respective pixel regions defined by a plurality of gate and data lines crossing each other. A data driver is operable to supply data signals to the pixel cells. The pixel cells are connected with the first data line and are divided into a plurality of pixel-cell groups. The data driver is operable to supply the data signal of first polarity to the pixel cells included in the odd-numbered pixel-cell groups, and to supply the data signal of second polarity to the pixel cells included in the even-numbered pixel-cell groups. The first polarity is opposite to the second polarity. A shift register that is operable to drive the gate lines to supply the scan pulses of different amplitudes to neighboring pixel cells included in the different pixel-cell groups.Type: GrantFiled: March 27, 2007Date of Patent: January 24, 2012Assignee: LG Display Co., Ltd.Inventor: Yong Ho Jang
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Patent number: 8063853Abstract: An organic light emitting diode (OLED) display includes a first pixel including a first light emitting diode, a first driving transistor connected to the first light emitting diode and having a first terminal, a second terminal, and a third terminal, and a first storage capacitor connected between the first terminal and the second terminal of the first driving transistor, and a second pixel including a second light emitting diode, a second driving transistor connected to the second light emitting diode and having a first terminal, a second terminal, and a third terminal, and a second storage capacitor connected between the first terminal and the second terminal of the second driving transistor, wherein the first storage capacitor has a different capacitance than the second storage capacitor.Type: GrantFiled: November 15, 2006Date of Patent: November 22, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Kwang-Chul Jung, Beohm-Rock Choi, Joon-Chul Goh
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Patent number: 8054244Abstract: A method and an apparatus for driving multi-segment display device are described. According to the present invention, problems of driving the electrode wire activation mode of the conventional liquid crystal display are solved by the driving waveforms. The driving waveforms of non-display area are in the OFF mode, where the non-display area has pixels in the OFF mode, driving electrode wires and background area. Problems of driving voltage wire activation mode are decreased, cost is lowered, and processing is simplified, so that every pixel of the display device will be controlled precisely.Type: GrantFiled: June 28, 2005Date of Patent: November 8, 2011Assignee: Industrial Technology Research InstituteInventors: Chih-Chiang Lu, Chung-Yi Chang, Jau-Min Ding, Chi-Chang Liao
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Patent number: 8049713Abstract: Systems and methods for reducing the power consumption necessary for updating a display are provided. The methods include determining a row addressing order based on an attribute of the image data that minimizes the number of column charging transitions necessary to write the image data to the display. In some embodiments, the row-addressing order is determined based on a determination of a whiteness value for the row. In some embodiments, a power-optimized row-addressing order is embedded in image data, allowing a display device to write the image data to the display more efficiently.Type: GrantFiled: April 24, 2006Date of Patent: November 1, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Jeffrey Brian Sampsell
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Patent number: 8031158Abstract: A driving circuit for a flat panel display device includes a generation unit for generating n-phase form generation clocks; and a plurality of shift register stages for sequentially generating a plurality gate signals to a plurality of gate lines using the n-phase form generation clocks, one of the shift register stage including first and second output terminals for outputting first and second switching signals, respectively, using an output signal of one of the preceding shift register stages and an output signal of one of the subsequent shift register stages; a first transistor connected to the first output terminal for receiving one of the n-phase form generation clocks; and a second transistor connected to the second output terminal and the first transistor, wherein each gate line is connected to a node between the first and second transistors.Type: GrantFiled: June 28, 2005Date of Patent: October 4, 2011Assignee: LG Display Co., Ltd.Inventors: Yong-Ho Jang, Soo-Young Yoon, Nam-Wook Cho
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Patent number: 7990343Abstract: A false contour reduction device reduces the occurrence of false contours on a display screen. The false contour reduction device includes a false contour occurrence pixel detection circuit, a specific color pixel detection circuit, and a false contour reduction processing circuit. The false contour occurrence pixel detection circuit detect at which pixels false contours will occur among the pixels in an image based on the input image signal. The detected pixels are false-contour-occurring pixels. The specific color pixel detection circuit detects pixels which have a specific color within a specific color range, among the false-contour-occurring pixels. The detected pixels are specific color false-contour-occurring pixels. The false contour reduction processing circuit performs a false contour reducing process on the specific color false-contour-occurring pixels.Type: GrantFiled: May 17, 2005Date of Patent: August 2, 2011Assignee: Panasonic CorporationInventor: Yasunori Takahashi
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Patent number: 7982710Abstract: There is provided a driving device for an image display medium that drives the image display medium including: a display substrate; a back surface substrate; plural first electrodes; plural second electrodes; and particles enclosed between the display substrate and the back surface substrate so as to move according to an electric field generated between the substrates by applying a voltage corresponding to an image between the first and second electrodes; the driving device including: a voltage application section that applies the voltage corresponding to an image between the first and second electrodes, the voltage application section, as a display drive voltage to be applied for each pixel to display a desired color at each pixel, applying a first pulse voltage that can cause the particles in a stationary state to start moving and thereafter applying a second pulse voltage that can cause the particles that have started moving to move.Type: GrantFiled: November 15, 2006Date of Patent: July 19, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshinori Machida, Yasufumi Suwabe, Yoshiro Yamaguchi, Takeshi Matsunaga, Atsushi Hirano, Kiyoshi Shigehiro
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Patent number: 7978172Abstract: A switching device that selectively changes a computer to be operated from multiple computers including a control unit that the control unit detects a cursor position on the computer to be operated based on coordinate data and a computer resolution of the computer to be operated, the coordinate data being generated by performing a same acceleration process as the computer to be operated, on relative coordinate data that has been acquired from a given pointing device, and the control unit selectively changing changes the computer to be operated according to the cursor position. It is thus possible to selectively change the computer to be operated without any dedicated software or requiring a given space for manipulation.Type: GrantFiled: December 16, 2004Date of Patent: July 12, 2011Assignee: Fujitsu Component LimitedInventor: Kenichi Fujita
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Patent number: 7973761Abstract: In a method of driving an information display panel of a passive matrix driving type, in which display media are sealed in a space between two substrates, at least one substrate being transparent, and, in which an electrostatic field, which is generated from an electrode at scan side and an electrode at data side arranged respectively to the opposed substrates in an intersected manner, is applied to the display media so as to display information such as an image, at least two or more voltage values or an open state (including a connection state under a high-impedance state) are applied to at least one electrode. According to the invention, it is possible to obtain a method of driving an information display panel, which can reduce a cross-talk occurring voltage generated between the electrode at scan side and the electrode at data side and thus improve a display quality.Type: GrantFiled: November 16, 2006Date of Patent: July 5, 2011Assignee: Bridgestone CorporationInventors: Akihiko Yokoo, Norio Nihei
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Patent number: 7944428Abstract: An illuminator for a flat-panel display comprises a tapered slab waveguide 1 co-extensive with the display, a light source 2-4 arranged to inject light into an edge of the waveguide so that it emerges over the face of the waveguide, and means for scanning the light injected into the wedge so that different areas of the panel are illuminated in turn. Preferably the light source is a set of rows of LEDs, each row injecting light at a different range of angles so that it emerges over different areas of the waveguide 1.Type: GrantFiled: June 4, 2004Date of Patent: May 17, 2011Assignee: Microsoft CorporationInventor: Adrian Robert Leigh Travis
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Patent number: 7940244Abstract: Using technology which uses a single shift register and simultaneously generates multiple pulses, this invention is a liquid crystal display device which rapidly drives data lines. It is possible to increase the frequency of the shift register output signal without changing the frequency of the shift register operation clock. If the shift register output signals, by means of analog switches, are used to determine the video signal sampling timing, high speed data line driving can be realized. Additionally, if the output signals of the shift register mentioned above are used to determine the video signal latch timing in a digital driver, high speed latching of the video signal can be realized. Consequently, even if the driving circuits of the liquid crystal display matrix are composed of TFTs, high speed operation of the driving circuits is possible without increasing power consumption. The shift register can also be used to inspect the electrical characteristics of the data lines and analog switches.Type: GrantFiled: July 3, 2006Date of Patent: May 10, 2011Assignee: Seiko Epson CorporationInventor: Seiichiro Higashi
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Patent number: 7936321Abstract: A driving circuit capable of decreasing an error of a gray level voltage without affecting a voltage drop when a gray level signal of a D/A converter is generated in an analog switch, and an organic electroluminescence display using the same. The driving circuit includes first and second switch units to select respective first and second reference voltages to correspond to a data signal; a resistor including a plurality of resistor arrays to receive and distribute the first and second reference voltages by utilization of at least two resistances to generate a gray level voltage; a third switch unit to select one resistor array out of the plurality of arrays to correspond to the data signal and to transmit the first and second reference voltages to the selected resistor array; and a fourth switch unit to output the gray level voltage, generated by the resistor array, to correspond to the data signal.Type: GrantFiled: November 16, 2006Date of Patent: May 3, 2011Assignee: Samsung Mobile Display Co., Ltd.Inventor: Yong Sung Park
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Patent number: 7936343Abstract: A sensing device for sensing a position relative to a surface. The surface has printed therein or thereon coded data including at least one data portion, and visible information, at least some of the coded data being coincident with the visible information. The sensing device includes a sensor for sensing at least one data portion when placed in an operative position relative to the at least one region and generating indicating data using the sensed data portion. The indicating data is indicative of a position of the data portion relative to the surface and an orientation of the sensing device relative to the data portion. The indicating data is then communicated to a computer system to allow the position of the sensing device relative to the surface to be determined.Type: GrantFiled: June 20, 2005Date of Patent: May 3, 2011Assignee: Silverbrook Research Pty LtdInventors: Paul Lapstun, Kia Silverbrook
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Patent number: 7932886Abstract: Using technology which uses a single shift register and simultaneously generates multiple pulses, this invention is a liquid crystal display device which rapidly drives data lines. It is possible to increase the frequency of the shift register output signal without changing the frequency of the shift register operation clock. If the shift register output signals, by means of analog switches, are used to determine the video signal sampling timing, high speed data line driving can be realized. Additionally, if the output signals of the shift register mentioned above are used to determine the video signal latch timing in a digital driver, high speed latching of the video signal can be realized. Consequently, even if the driving circuits of the liquid crystal display matrix are composed of TFTs, high speed operation of the driving circuits is possible without increasing power consumption. The shift register can also be used to inspect the electrical characteristics of the data lines and analog switches.Type: GrantFiled: July 3, 2006Date of Patent: April 26, 2011Assignee: Seiko Epson CorporationInventor: Seiichiro Higashi
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Patent number: 7907129Abstract: An improved handheld electronic device having a virtual keypad input device includes a case, and further includes an input apparatus and a processor apparatus disposed on the case. The input apparatus includes a number of vibrational sensors that sense the vibrational results of a contact with the case. The processor apparatus executes a routine that determines from the vibrational results a location on the case where the contact was made. Depending upon the location of the contact, the routine can interpret the contact as an input to the processor. The exemplary contact with the case can be in the nature of a touching or tapping contact or other contact with the case.Type: GrantFiled: December 14, 2005Date of Patent: March 15, 2011Assignee: Research In Motion LimitedInventors: Jacek S. Idzik, Robert Lowles
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Patent number: 7889189Abstract: An electrooptic device includes: a plurality of parallel signal lines provided in a pixel array region in which a plurality of pixels is arrayed; a driving circuit electrically connected to a first end of each of the signal lines outside the pixel array region; and a protection circuit in which a diode device is electrically connected to a second end of the signal line, the diode device dissipating static electricity from the signal line. The resistance of the portion of the signal line from the center of the length to the driving circuit is higher than that of the portion of the signal line from the center to the diode device.Type: GrantFiled: November 5, 2007Date of Patent: February 15, 2011Assignee: Sony CorporationInventor: Shin Fujita
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Patent number: 7884794Abstract: In a data line driver for driving data lines of a display apparatus, a data register is adapted to latch video data and a definite non-video gradation data via a data bus. A data latch circuit is adapted to latch the video data and the definite non-video gradation data at different timings to generate digital output signals. A digital/analog converter is adapted to convert the digital output signals of the data latch circuit into analog signals. An output buffer is adapted to apply the analog signals of the digital/analog converter to the data lines.Type: GrantFiled: June 29, 2005Date of Patent: February 8, 2011Assignee: Renesas Electronics CorporationInventor: Shigeki Okutani