Patents Issued in January 28, 2014
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Patent number: 8638247Abstract: A method for encoding an input sequence of symbols. The method includes, sequentially, for each symbol in the input sequence, determining an estimated probability for that symbol based on a context model, identifying a codeword associated with a sequence of symbols resulting from appending that symbol to a previous sequence of symbols associated with that estimated probability, using an encoding tree associated with that estimated probability, and storing the codeword in a buffer element of a first-in-first-out buffer, wherein the buffer element is associated with the estimated probability. Stored codewords are output from the buffer in a first-in-first-out order.Type: GrantFiled: December 12, 2011Date of Patent: January 28, 2014Assignee: BlackBerry LimitedInventors: Gergely Ferenc Korodi, Dake He
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Patent number: 8638248Abstract: A method and apparatus for correcting the offset and linearity error of a data acquisition system. A charge redistribution digital to analog convertor (CDAC) is connected to one of the differential inputs of a comparator whose second input comes from a function CDAC. The calibration algorithm is built into a digital control unit. The digital control unit detects the offset and capacitor mismatch errors sequentially, stores the calibration codes for each error in calibration mode and provides the input-dependent error correction signals synchronized with the binary search timing to adjust the differential input of the comparator and compensate the input-dependent errors present at the output of the non-ideal function CDAC during normal conversions.Type: GrantFiled: October 7, 2011Date of Patent: January 28, 2014Assignee: NXP, B.V.Inventors: Qiong Wu, Kevin Mahooti
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Patent number: 8638249Abstract: In accordance with an embodiment, a method includes determining an amplitude of an input signal provided by a capacitive signal source, compressing the input signal in an analog domain to form a compressed analog signal based on the determined amplitude, converting the compressed analog signal to a compressed digital signal, and decompressing the digital signal in a digital domain to form a decompressed digital signal. In an embodiment, compressing the analog signal includes adjusting a first gain of an amplifier coupled to the capacitive signal source, and decompressing the digital signal comprises adjusting a second gain of a digital processing block.Type: GrantFiled: April 16, 2012Date of Patent: January 28, 2014Assignee: Infineon Technologies AGInventors: Michael Kropfitsch, Jose Luis Ceballos
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Patent number: 8638250Abstract: An amplifier, a fully-differential amplifier and a delta-sigma modulator are disclosed. The disclosed amplifier includes a front-end gain stage, an AC-coupled push-pull output stage and a compensation circuit. The compensation circuit is coupled between the front-end gain stage and an output terminal of the amplifier. The AC-coupled push-pull output stage uses an AC-coupled capacitor (which is a passive two terminal electrical component rather than a stray or parasitic capacitance of a transistor) to couple the front-end gain stage to a gate of a top or bottom transistor of a push-pull structure introduced in the AC-coupled push-pull output stage, and uses a resistance component to couple a gate of the top or bottom transistor (depending on which one is coupled to the AC-coupled capacitor) to a bias voltage level.Type: GrantFiled: August 21, 2012Date of Patent: January 28, 2014Assignee: Mediatek Inc.Inventors: Chen-Yen Ho, Chi-Lun Lo, Hung-Chieh Tsai, Yu-Hsin Lin
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Patent number: 8638251Abstract: A continuous time delta-sigma modulator is provided that includes an integrator stage including a plurality of integrators; a quantizer to receive an input signal from the integrator stage and output a quantizer signal; a global feedback path providing feedback from the quantizer to the integrator stage; a local feedback path connecting the quantizer and a preceding integrator of the integrator stage configured to compensate for delay attributed to the global feedback path; and a delay compensation circuit. The delay compensation circuit is configured to calculate a delay value based on sources of additional delay within a local feedback loop, and to supply the additional delay value to the quantizer to compensate for delay within the local feedback loop.Type: GrantFiled: August 29, 2012Date of Patent: January 28, 2014Assignee: McAfee, Inc.Inventors: Merit Hong, James Riches
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Patent number: 8638252Abstract: An analog-to-digital converter comprises a first set of comparators configured for generating a coarse digital measurement of an analog input signal, and a second set of comparators for performing a fine digital measurement of the analog input signal. The second set comprises a plurality of dynamic comparators, wherein each dynamic comparator is configurable for being activated by a clock signal. An activation circuit processes the coarse measurement and an input clock signal for generating a set of activation signals, which activate a subset of the dynamic comparators to generate the fine digital measurement.Type: GrantFiled: November 30, 2011Date of Patent: January 28, 2014Assignee: Tensorcom, IncInventor: Mahdi Davoodabadi
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Patent number: 8638253Abstract: Embodiments disclosed herein include a radar sensor device for detecting movement and velocity of external objects within or around a particular radar sensor field. The radar sensor field can use an array or cluster or radar sensors, including compact (portable by hand) radar sensors that function as network nodes within a wireless, low-energy ad hoc network. Radar sensor devices can use vibration as a means of communicating power status, functionality, and progress of installation of a particular radar unit. Such a vibration can be executed at a particular predefined cadence, rhythm, or other pattern, to indicate a powered-on state, active network connectivity, and other device states. Such a radar sensor device provides silent and non-visible status indication for quick and efficient deployment.Type: GrantFiled: November 12, 2010Date of Patent: January 28, 2014Assignee: BBN Technologies Corp.Inventor: Paul Dryer
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Patent number: 8638254Abstract: A signal processing device performs object detection processing in which peak signals each representing a differential frequency between a transmitted signal in which a frequency thereof changes in a predetermined cycle and a received signal are derived in a first period where the frequency of the transmitted signal rises and a second period where the frequency of the transmitted signal falls, and the peak signals in the first period are paired with the peak signals in the second period to detect object information related to the peak signals. A range setting unit sets a frequency range in each of the first period and the second period on the basis of a frequency of an integer multiple of the peak signal related to the object information which has been detected in previous object detection processing. A signal setting unit sets a peak signal as a specific peak signal in a case where the peak signal is within the frequency range in each of the first period and the second period.Type: GrantFiled: August 25, 2010Date of Patent: January 28, 2014Assignee: Fujitsu Ten LimitedInventors: Jun Itoh, Tokio Shinagawa, Daisuke Nakabayashi, Hiroyuki Ishimori
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Patent number: 8638255Abstract: A reader device (110) for reading information transmitted from a transponder (130) via a backscatter signal (132) generated by the transponder (130) in response to a stimulus signal (112) generated by the reader device (110), the reader device (110) comprising a first power estimation unit (114) adapted for estimating a first power value indicative of the power of the stimulus signal (112) at a position of the transponder (130) by evaluating a power information included in the backscatter signal (132), a second power estimation unit (116) adapted for estimating a second power value indicative of the power of the backscatter signal (132) at a position of the reader device (110), and a distance estimation unit (118) adapted for estimating a distance (d1) between the reader device (110) and the transponder (130) based on the first power value and the second power value.Type: GrantFiled: July 30, 2009Date of Patent: January 28, 2014Assignee: NXP B.V.Inventor: Ulrich Muehlmann
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Patent number: 8638256Abstract: The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.Type: GrantFiled: September 29, 2009Date of Patent: January 28, 2014Assignee: Skyhook Wireless, Inc.Inventors: Farshid Alizadeh-Shabdiz, Mohammad A. Heidaran
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Patent number: 8638257Abstract: A GNSS receiver utilizes an antenna structure that two or more antennas that are spaced apart from their neighboring antennas by less than 1 wavelength of a GNSS satellite carrier signal of interest. The receiver calculates the orientation of the antennas directly from differences in the carrier phase angles measured at the two antennas, without resolving integer carrier cycle ambiguity.Type: GrantFiled: October 15, 2009Date of Patent: January 28, 2014Assignee: Novatel, Inc.Inventor: Patrick C. Fenton
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Patent number: 8638258Abstract: A GNSS enabled mobile device receives GNSS assistance data in a determined format from a central processing station communicatively coupled to a wide area reference network (WARN). The WARN comprises a first plurality of GNSS tracking stations from which usable signals are received by the central processing station, and a second plurality of GNSS tracking stations from which unusable or no signals are received by the central processing station. The central processing station generates the GNSS assistance data using a complete set of GNSS reference feeds of the WARN. The complete set of GNSS reference feeds comprises actual GNSS reference feeds from the first plurality of GNSS tracking stations and virtual GNSS reference feeds derived for the second plurality of GNSS tracking stations from processed actual GNSS reference feeds. The generated GNSS assistance data is reformatted into a determined format and is communicated to the GNSS enabled mobile device, accordingly.Type: GrantFiled: September 13, 2012Date of Patent: January 28, 2014Assignee: Broadcom CorporationInventors: Charles Abraham, David Albert Lundgren
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Patent number: 8638259Abstract: A system and method for determining the location of a wireless device. A boundary for an approximate area in which the wireless device is located is determined and a plurality of satellites may be determined as a function of the boundary. Assistance data is transmitted to the device which includes information from the plurality of satellites, and the location of the wireless device may be determined from the information. In one embodiment, if the number of the plurality of satellites is greater than a predetermined threshold then the number of satellites may be reduced as a function of one or more of the elevation of each satellite above the horizon, a distance between each satellite to one or more other satellites, and an altitude of each satellite.Type: GrantFiled: September 1, 2010Date of Patent: January 28, 2014Assignee: Maple Acquisition LLCInventors: Neil Harper, Martin Dawson, Martin Thomson
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Patent number: 8638260Abstract: A mechanism for processing beamforming steering matrices in a transceiver system. A plurality of beamforming steering matrices associated with a plurality of subcarriers of an RF signal received at the transceiver system are generated. The beamforming steering matrices are compressed and stored. The beamforming steering matrices may also be grouped or sub-sampled prior to being stored. The beamforming steering matrices are decompressed and ungrouped before being applied to data to be transmitted. Prior to ungrouping the beamforming steering matrices, a phase difference between corresponding beamforming steering vectors of consecutive beamforming steering matrices is determined. Phase rotation is performed on the corresponding beamforming steering vectors based on the determined phase difference associated with the corresponding beamforming steering vectors to improve phase continuity between consecutive beamforming steering matrices.Type: GrantFiled: July 27, 2012Date of Patent: January 28, 2014Assignee: QUALCOMM IncorporatedInventors: Chi-Lin Su, Bemini Hennadige Janath Peiris, Ning Zhang
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Patent number: 8638261Abstract: A multi-band antenna includes a grounding element, a first antenna working on a wireless wide area network, a second antenna working on a wireless local area network, and a third antenna operating on a wireless local area network. The first antenna includes a first conductive piece, a first radiating element extending from the first conductive arm, a coupling radiating element and a feeding line. The second antenna includes a second conductive piece, a first resonant element extending from the second conductive piece, a second resonant element and a feeding line. The third antenna includes a third conductive element, a first conductive arm extending from the third conductive element and a second conductive arm and a feeding line. The first conductive piece is connected to the second conductive piece.Type: GrantFiled: August 26, 2011Date of Patent: January 28, 2014Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Lung-Sheng Tai, Wen-Fong Su, Chun-Ming Chiu
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Patent number: 8638262Abstract: Apparatus (20) comprising: an antenna (12) connectable to a first terminal (38) and to a second terminal (40) and comprising a first conductive part (34) and a second conductive part (36), the first conductive part being configured electrically in parallel with the second conductive part, the first conductive part (34) being configured to have a first electrical length and the second conductive part (36) being configured to have a second electrical length together providing a common resonant mode having a first operational frequency band, the second conductive part (36) substantially providing a common resonant mode having a second operational frequency band and the first conductive part (34) substantially providing a differential resonant mode having a third operational frequency band.Type: GrantFiled: June 30, 2009Date of Patent: January 28, 2014Assignee: Nokia CorporationInventors: Aimo Arkko, Jens Troelsen, Rune Skipper Soe
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Patent number: 8638263Abstract: A technique to extend antenna coverage pattern of a planar antenna array. In one instance a reflector is disposed above the planar antenna array and in another instance a lens element is disposed above the planar antenna array. The reflection or refraction of RF signals allows antenna coverage pattern to be extended in a horizontal direction parallel to the planar surface of the antenna array and beyond a coverage pattern that is typically not available, without such reflection or refraction of the RF signal.Type: GrantFiled: March 31, 2011Date of Patent: January 28, 2014Assignee: Broadcom CorporationInventors: Christopher Hansen, Vadim Piskun
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Patent number: 8638264Abstract: A radar antenna system comprises a base. A center support is coupled to the base on a first end. A radar array is pivotally coupled to a second end of the center support. At least two actuators are provided for pivoting the radar array about the center support, altering its azimuth position.Type: GrantFiled: March 23, 2010Date of Patent: January 28, 2014Assignee: Lockheed Martin CorporationInventor: Richard R. Hall
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Patent number: 8638265Abstract: Techniques involving a slot antenna and associated functionality are described. In one or more implementations, the techniques describe a slot antenna that is usable for wireless communication in a mobile communication device. The mobile communication device may include one or more modules communicatively coupled to the slot antenna and configured to employ the slot antenna to enable the wireless communication.Type: GrantFiled: March 11, 2011Date of Patent: January 28, 2014Assignee: Microsoft CorporationInventor: Alireza Mahanfar
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Patent number: 8638266Abstract: An antenna arrangement comprises a ground plane (14) and a planar antenna element (30) mounted spaced from and parallel to the ground plane. An open-ended slot (16) is provided in the ground plane (14), the slot being coextensive with an edge portion of the ground plane and having a first end (18) opening into the edge portion of the ground plane and a second closed end (20). An antenna feed (22) is coupled to the slot at a location intermediate the first and second ends. The planar antenna element is connected by an electrically conductive wall (28) to the edge portion of the ground plane, the wall (28) being coextensive with the slot (16). The combination of the slot shape, slot location and the wall serves to increase the bandwidth of the antenna arrangement.Type: GrantFiled: July 23, 2009Date of Patent: January 28, 2014Assignee: NXP, B.V.Inventors: Zidong Liu, Kevin Boyle
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Patent number: 8638267Abstract: Provided is a parabolic antenna that suppresses leakage of radio waves with a simpler configuration. The parabolic antenna includes a horn that transmits and receives signals; a feed that supports the horn and relays the signals the horn transmits and receives; a reflector that reflects the received signals to focus the received signals on the horn and reflects the signals from the horn to transmit the signals; a reflecting mirror supporting member that supports the reflector; and a feed fitting adapter that enables the feed to be fitted into the reflecting mirror supporting member. A choke groove is formed in at least one of a joint area between the reflecting mirror supporting member and the reflector and a joint area between the reflecting mirror supporting member and the feed fitting adapter, which suppresses propagation of radio waves traveling through the gap of the joint area.Type: GrantFiled: December 5, 2008Date of Patent: January 28, 2014Assignee: NEC CorporationInventors: Norihiko Omuro, Nobuhiko Oguma
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Patent number: 8638268Abstract: The disclosure describes a compact coil antenna that can operate even if the coil antenna is arranged closely to its conductor plate, and that has a high degree of coupling with a target antenna. A lower coil conductor part and an upper coil conductor part each have a substantially rectangular and spiral form, and the inner end of the lower coil conductor part connects to the inner end of the upper coil conductor part to be connected in series to the inner end of the upper coil conductor part. In the lower coil conductor part and the upper coil conductor part, the arrangement interval in parallel-to-axis parts including segments that are parallel to the direction of the axis of a magnetic-material core is shorter than the arrangement interval of segments in orthogonal-to-axis parts that are orthogonal to the axis of the magnetic-material core.Type: GrantFiled: September 30, 2010Date of Patent: January 28, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Kuniaki Yosui, Hiroyuki Kubo, Hiromitsu Ito
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Patent number: 8638269Abstract: A non-planar, ultra-wide band, quasi-self-complementary feed antenna is disclosed. The antenna provides an invariant phase center location over its entire frequency band, is compact and includes a low profile, and includes input matching better than is currently available over a decade of frequency bandwidth. The very compact feed couples dual polarization electromagnetic energy to a transmitter from free space or air with minimum losses and mismatches over a very wide frequency band.Type: GrantFiled: June 5, 2008Date of Patent: January 28, 2014Assignee: Cornell UniversityInventor: German Cortes-Medellin
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Patent number: 8638270Abstract: An apparatus has an improved antenna pattern for a cross dipole antenna. Such antennas desirably have an omnidirectional antenna pattern. Conventional cross dipole antennas exhibit nulls in their antenna patterns, which can cause antennas to deviate from a standard or specification. Applicant recognized and confirmed that the connection of a coaxial cable to the antenna arms is a cause of the nulls in the antenna pattern, and has devised techniques disclosed herein to compensate or cancel the effects of the connection. In one embodiment, the arms of the cross dipole antenna that are coupled to a center conductor of the coaxial cable remain of conventional length, but the arms of the cross dipole antenna that are coupled to a shield of the coaxial cable are lengthened by a fraction of the radius of the outer diameter of the coaxial cable.Type: GrantFiled: May 3, 2013Date of Patent: January 28, 2014Assignee: Venti Group, LLCInventor: William Ernest Payne
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Patent number: 8638271Abstract: A multi-band antenna includes a dielectric substrate, and a main antenna member and a metal piece disposed on the dielectric substrate. The main antenna member includes a feed-in portion for feeding with a radio frequency signal, a first conductor arm connected to the feed-in portion and adjacent to a first side edge of the dielectric substrate, a second conductor arm connected to the feed-in portion and having a length shorter than that of the first conductor arm, a third conductor arm connected to the feed-in portion, a fourth conductor arm extending along the third conductor arm, and a grounding portion adjacent to the feed-in portion. The metal piece is disposed at the first side edge and connected to the fourth conductor arm, resonates and couples with the first conductor arm to form a first radiator section, and cooperates with the fourth conductor arm to form a second radiator section.Type: GrantFiled: April 14, 2011Date of Patent: January 28, 2014Assignee: Quanta Computer Inc.Inventors: Chun-Yuan Wang, Chi-Yin Fang
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Patent number: 8638272Abstract: An array antenna includes: a plurality of first antenna elements arrayed at specified element intervals on a plane of a board; a plurality of second antenna elements arrayed at the element intervals in parallel to an array direction of the first antenna elements on the plane; a first power supply circuit for supplying electric power to the respective first antenna elements by a line branched at a first branch point on the plane; and a second power supply circuit for supplying electric power to the respective second antenna elements by a line branched at a second branch point shifted by a specified distance in the array direction with respect to the first branch point on the plane.Type: GrantFiled: December 22, 2009Date of Patent: January 28, 2014Assignee: NEC CorporationInventors: Kosuke Tanabe, Atsushi Ooshima
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Patent number: 8638273Abstract: An antenna and method of making the same is disclosed wherein the antenna includes a seal assembly comprising a seal plate to prevent material used to form a seal around the conductor element from entering into the air gap of the antenna body.Type: GrantFiled: February 16, 2011Date of Patent: January 28, 2014Assignee: General Electric CompanyInventor: David John Geer
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Patent number: 8638274Abstract: The present invention relates to a display (10) comprising a vertical stack of at least two different color absorbing layers (14) of pixels (18). The display is characterized in that the pixel resolution of at least two of the layers is different. The present invention also relates to a display system (50) comprising such a display and a method for controlling such a display.Type: GrantFiled: November 27, 2007Date of Patent: January 28, 2014Assignee: Koninklijke Philips N.V.Inventors: Sander Jurgen Roosendaal, Martinusj Hermanus Wilhelmus Maria Van Delden
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Patent number: 8638275Abstract: An incandescent light source display includes a substrate, a plurality of first electrode down-leads, a plurality of second electrode down-leads and a plurality of heating units. The plurality of first electrode down-leads are located on the substrate in parallel to each other and the plurality of second electrode down-leads are located on the substrate in parallel to each other. The first electrode down-leads cross the second electrode down-leads and corporately define a grid having a plurality of cells. Each of the incandescent light sources is located in correspondence with each of the cells. Each incandescent light source includes a first electrode, a second electrode and an incandescent element. The incandescent element includes a carbon nanotube structure.Type: GrantFiled: November 13, 2009Date of Patent: January 28, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Peng Liu, Liang Liu, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 8638276Abstract: In an organic light emitting display, a gamma can be applied according to color regardless of the sequence of data output from a data driver, even if a separate gamma by color is used. A method for driving the organic light emitting display is also provided.Type: GrantFiled: June 30, 2009Date of Patent: January 28, 2014Assignee: Samsung Display Co., Ltd.Inventors: An-Su Lee, Myung-Ho Lee, June-Young Song, Kyoung-Soo Lee, Myoung-Seop Song, Yun-Tae Kim, Jong-Soo Kim, Min-Cheol Kim, Jung-Keun Ahn, Hun-Tae Kim, Sang-Kyun Cho, Hye-Jin Shin
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Patent number: 8638277Abstract: To compensate for a change of light emission intensity caused by deterioration of a light emitting element, provided is a display device including a drive element (T1) which controls a drive current to be supplied to a light emitting element (EL) in accordance with a data signal representing a target luminance of the light emitting element (EL). The light emitting element (EL) emits light in accordance with a current flowing through the light emitting element (EL). The data signal is corrected in accordance with a voltage applied at both terminals of the light emitting element (EL) so that the drive current to be supplied to the light emitting element (EL) increases with an increase in an amount of a voltage drop of the light emitting element (EL).Type: GrantFiled: February 3, 2011Date of Patent: January 28, 2014Assignee: Global OLED Technology LLCInventor: Koichi Miwa
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Patent number: 8638278Abstract: The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to be input into the pixel portion is reduced, and the magnitude of a current to flow through the EL element is allowed to be maintained at a constant level even when a temperature of an EL layer changes by providing the EL display with another EL element to be used for monitoring a temperature.Type: GrantFiled: March 11, 2013Date of Patent: January 28, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama, Mitsuaki Osame, Mai Osada
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Patent number: 8638279Abstract: A pixel of the present invention can display an image having uniform luminance. The pixel includes: an organic light emitting diode; a first transistor for controlling the amount of current flowing from a first power supply connected to a first electrode to the organic light emitting diode; a first capacitor having a first terminal connected to a data line; a third transistor positioned between a second node connected to a second terminal of the first capacitor and a first node connected to a gate electrode of the first transistor, and turned on when a first scan signal is supplied to the first scan line; and a fifth transistor connected between the second node and the data line, and turned off when an emission control signal is supplied to an emission control line.Type: GrantFiled: January 6, 2011Date of Patent: January 28, 2014Assignee: Samsung Display Co., Ltd.Inventor: Jin-Tae Jeong
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Patent number: 8638280Abstract: Disclosed is a display apparatus comprising an active matrix display section including a plurality of signal lines and scan lines, arranged in a matrix on a substrate, and a plurality of pixels and active elements arranged at intersections of the signal and scan lines, a scan line driving circuit for driving the scan lines and a signal line driving circuit for driving the signal lines. The display section has a non-rectangular shape. The active elements that make up the scan line driving circuit and/or the signal line driving circuit are formed by the same manufacturing process as that for forming the active elements in the active matrix display section. The scan line driving circuit and/or the signal line driving circuit are each a set of circuit units having the same function. These circuit units are arranged to conform to and extend around the outer circumference of the non-rectangular display section.Type: GrantFiled: April 25, 2008Date of Patent: January 28, 2014Assignee: NLT Technologies, Ltd.Inventor: Yoshihiro Nonaka
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Patent number: 8638281Abstract: A display apparatus including a display panel, a plurality of light sources provided below the display panel to emit light, and an optical plate provided between the display panel and the light sources to diffuse light are disclosed according to one or more embodiments. The optical plate comprises a base including a plurality of regions having different thicknesses, and a convex pattern formed on the base.Type: GrantFiled: November 20, 2009Date of Patent: January 28, 2014Assignee: Samsung Display Co., Ltd.Inventors: Dong-Yeol Yeom, Joong-Hyun Kim
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Patent number: 8638282Abstract: In one embodiment of the present invention, a liquid crystal display device according to the present invention includes a plurality of pixels, each including first and second subpixels. When a predetermined grayscale tone is displayed continuously through four or more consecutive even number of vertical scanning periods, the first and second subpixels have different luminances in at least two of the even number of vertical scanning periods, first polarity periods that are included in the vertical scanning periods and that maintain a first polarity are as long as second polarity periods that are also included in the vertical scanning periods and that maintain a second polarity for each of the first and second subpixels, and in each of the first and second polarity periods, the difference between the average of effective voltages applied to the liquid crystal layer of the first subpixel and that of effective voltages applied to the liquid crystal layer of the second subpixel is substantially equal to zero.Type: GrantFiled: August 13, 2007Date of Patent: January 28, 2014Assignee: Sharp Kabushiki KaishaInventors: Fumikazu Shimoshikiryoh, Masae Kitayama, Kentaro Irie
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Patent number: 8638283Abstract: A timing controller is provided which is capable of achieving normal image display at a time of reverse scanning in upward and downward directions and right and left directions. In an image display device having a plurality of scanning line driving ICs (Integrated Circuits), a valid line counting section counts a count of valid driving lines based on a DE (Data Enable) signal and DCK (Dot Clock) signal. A cascade signal counting section counts up a total count of outputs from a count of VCK (Vertical Clock) signals including a VSP (Vertical Start Pulse) 2 output signal up to a VSP1 cascade outputting signal VSP1. A calculating section calculates an excessive output of a scanning line driving IC from a difference between the count of valid driving lines and the total count of outputs.Type: GrantFiled: May 19, 2010Date of Patent: January 28, 2014Assignee: NLT Technologies, Ltd.Inventors: Atsushi Kota, Tsuyoshi Ichiraku, Noriyuki Takagi
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Patent number: 8638284Abstract: A gate signal line driving circuit and a display device which can suppress the degradation of an element attributed to the use of the element for a long time, and can realize the prolongation of lifetime of the element are provided. With respect to elements to which a HIGH voltage is applied for a long time, a plurality of elements are connected in parallel, and at least some of the plurality of elements are driven by switching elements.Type: GrantFiled: April 16, 2010Date of Patent: January 28, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshihiro Kotani, Mitsuru Goto
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Patent number: 8638285Abstract: A display device is provided with a display panel; first to n-th cascade-connected drivers (n being an integer of two or more); a controller transmitting compressed image data to the first driver. The i-th driver of the first to n-th drivers includes a drive circuitry driving the display panel; a first bus adapted to data transfer to the (i+1)-th driver of the first to n-th drivers; a second bus adapted to data transfer to the driver circuitry; and a decompression section receiving the compressed image data from the (i?1)-th driver of the first to n-th drivers or the controller. The decompression section of the i-th driver transfers the received compressed image data to the (i+1)-th driver through the first bus thereof, when the received compressed image data are not associated with the i-th driver.Type: GrantFiled: May 28, 2010Date of Patent: January 28, 2014Assignee: Renesas Electronics CorporationInventors: Takashi Nose, Hirobumi Furihata
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Patent number: 8638286Abstract: An active matrix display device comprises a substrate having an insulating surface, a plurality of pixel electrodes arranged in a matrix form over the substrate, and a plurality of switching elements operationally connected to the pixel electrodes. Each of the switching elements further comprise a thin film transistor. The display device further includes a display medium comprising an emissive material that is capable of electrically changing luminous strength disposed at each of the pixel electrodes, and a driver circuit that includes a plurality of thin film transistors for driving the plurality of switching elements. Each of the plurality of thin film transistors comprise a crystallized semiconductor layer, a gate insulating film adjacent to the crystallized semiconductor layer and a gate electrode adjacent to the gate insulating film.Type: GrantFiled: November 26, 2012Date of Patent: January 28, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Koyama, Yuji Kawasaki
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Patent number: 8638287Abstract: Provided is a liquid crystal display device that can improve the image quality of a moving image. The liquid crystal display device includes a driver, a backlight unit, a first lamp driver, a second lamp driver, and a lamp driving controller. The liquid crystal panel divided is into at least three regions, and has a plurality of lamps arranged to correspond to each of the divided regions. Lamps of the lamps arranged in upper and lower regions of the liquid crystal panel are connected to each other. The first lamp driver controls on/off times of the lamps in the upper and lower regions of the liquid crystal panel. The second lamp driver controls on/off times of the lamps in the region excluding the upper and lower regions of the liquid crystal panel. The lamp driving controller controls the first and second lamp drivers using signals supplied from the driver.Type: GrantFiled: December 26, 2007Date of Patent: January 28, 2014Assignee: LG Display Co., Ltd.Inventor: Ki Duk Kim
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Patent number: 8638288Abstract: A Red, Green, Blue Light Emitting Device (RGB LED) backlight color control system includes an RGB LED backlight comprising a red LED, a green LED, and a blue LED. A driving current regulator is coupled to each of the red LED, the green LED, and the blue LED. A backlight power control is coupled to each of the driving current regulators and operable to receive adjustment data and use the adjustment data to adjust the driving current supplied by at least one of the driving current regulators to at least one of the red LED, the green LED, and the blue LED. By adjusting the driving current supplied to the red LED, green LED, and/or the blue LED, color pallet points on a color triangle (associated with a display that uses the RGB LED backlight) are shifted to achieve the color desired by the user, avoiding the loss of color pallet points in the color triangle that occurs with conventional re-mapping techniques.Type: GrantFiled: November 26, 2008Date of Patent: January 28, 2014Assignee: Dell Products L.P.Inventors: Erin L. Taylor, John Matthew Knadler, IV
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Patent number: 8638289Abstract: A driving method includes: dividing a unit period into a plurality of sub-frame periods corresponding to the primary colors; writing a primary color component in each sub-frame period by a first scan executed on the plurality of pixels; irradiating, in each sub-frame period, the plurality of pixels with the corresponding primary color of light by the irradiation unit at a timing that is after the first scan and before the first scan of a subsequent sub-frame period; and waiting a wait period that is from when the first scan of one primary color component among the at least three colors ends until when the irradiation unit starts irradiating the one primary color of light, the wait period for the one primary color being different from wait periods for the other colors.Type: GrantFiled: October 27, 2009Date of Patent: January 28, 2014Assignee: Seiko Epson CorporationInventors: Hidehito Iisaka, Hiroyuki Hosaka, Taku Kitagawa, Shuichi Nakanishi, Atsushi Kato
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Patent number: 8638290Abstract: A backlight apparatus and a display apparatus are provided. The backlight apparatus includes N first switch units to switch a plurality of currents flowing in respective N light emitting element arrays according to an input brightness control signal, N second switch units to switch a plurality of currents flowing in respective N capacitors according to the input brightness control signal, and a reference current generation unit to generate and output a reference current based on the input brightness control signal. An inverter unit adjusts a total current supplied to all of the light emitting element arrays in total to be equal to the reference current if the total current is different from the reference current.Type: GrantFiled: April 16, 2010Date of Patent: January 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-hoon Kim, Sung-jin Choi, Pankaj Agarwal, Joon-hyun Yang
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Patent number: 8638291Abstract: To provide a hold-type display device without a problem of motion blur and a driving method thereof. The length of a period for displaying a blanking image in one frame period is controlled in accordance with a control parameter showing the degree of motion blur, and the level of a signal supplied to a display element is changed in accordance with the length of the period for displaying the blanking image. Accordingly, the hold-type display device without a problem of motion blur and the driving method thereof can be provided.Type: GrantFiled: November 15, 2012Date of Patent: January 28, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yasunori Yoshida, Hajime Kimura
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Patent number: 8638292Abstract: A terminal apparatus includes a display displaying a plurality of display elements representing options on a display screen, an image-capturing section capturing an image of an operator who is viewing the display screen, a face position detector detecting the position of a facial image of the operator in a captured image, and a controller controlling the display to move the plurality of display elements in a predetermined direction on the display screen and to sequentially update and display the display elements when it is detected that the facial image of the operator in the captured image is outside of a predetermined range, and to stop the movement of the plurality of display elements when it is detected that the facial image falls within the predetermined range.Type: GrantFiled: December 3, 2009Date of Patent: January 28, 2014Assignees: Sony Corporation, Sony Mobile Communications, Inc.Inventors: Takashi Kawakami, Hiroyuki Kawakami, Kenta Ohmori
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Patent number: 8638293Abstract: A method for responding operations includes: intercepting a press-down event of a pointer equipment to obtain press-down position and time of the pointer equipment; intercepting a moving event of the pointer equipment to obtain a current position where the pointer equipment moves and time when the pointer equipment moves to the current position; calculating to obtain residence time, movement speed and movement direction of the pointer equipment according to the press-down position and time as well as the current position where the pointer equipment moves and the time when the pointer equipment moves to the current position; judging whether the current gesture is a dragging gesture or a scrolling gesture according to the residence time, movement speed and movement direction, executing a dragging operation if the current gesture is the dragging gesture, and executing a scrolling operation if the current gesture is the scrolling gesture.Type: GrantFiled: September 4, 2012Date of Patent: January 28, 2014Assignee: Tencent Technology (Shenzhen) Company LimitedInventors: Anqi Li, Min Ren
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Patent number: 8638294Abstract: A method of displaying a state of an apparatus having a user interface which includes generating state display information indicating the state of the apparatus and displaying the generated state display information in the user interface. The state display information indicates the state of the apparatus through a metaphorical indicator.Type: GrantFiled: November 14, 2012Date of Patent: January 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Bo-mi Kim, Min-jeong Moon, Jung-won Lee, Joon-kyu Seo, Hee-jeong Bae
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Patent number: 8638295Abstract: Systems, methods, and products are described that provide control configuration for a digital image system. One aspect provides for a system configured to identify one or more input control devices in communication with a digital image application operating on said system, the one or more input devices comprising one or more control elements; activating an input control device mode based on a number of identified input control devices; and mapping the one or more control elements of each input control device to one or more digital image application functions based on a type of the input control device and the input control mode. Other aspects and embodiments are also described herein.Type: GrantFiled: September 15, 2011Date of Patent: January 28, 2014Assignee: Omnyx, LLCInventors: Andrew Bruss, Maura Ann Bidinost, Tony Melanson
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Patent number: 8638296Abstract: A method of calibration and a calibration machine is provided for calibrating sensory controls of an ultrasonic navigation system. It can include an enclosure for containing a paired device group to minimize air flow therein, one or more holder mechanisms for rigidly mounting the paired devices at specific and adjustable orientations, and a rail system for holding the one or more holder mechanisms at specific locations within the enclosure. A computer communicatively coupled to the calibration machine can precisely adjust actuators for configuring the distances and orientations of the holding mechanisms and control a transmission and reception of the paired devices for calibrating the paired devices.Type: GrantFiled: May 19, 2011Date of Patent: January 28, 2014Inventors: Jason McIntosh, Marc Boillot