Patents Issued in March 31, 2015
  • Patent number: 8994587
    Abstract: Methods, apparatuses, and systems are provided for processing positioning signals to obtain navigation information by applying compressed sensing.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Josephine A. Bolotski, Douglas Neal Rowitch, Mark Leo Moeglein
  • Patent number: 8994588
    Abstract: The present invention relates to a method of generating two beams, having orthogonal polarizations, covering a selected area using an antenna (20) comprising multiple dual-polarized array elements (11). Each dual-polarized array element having a first phase center (18) associated with a first polarization and a second phase center (18) associated with a second polarization. The method comprises: designing a first weight matrix having a first non-zero weight vector for the first polarization and a second non-zero weight vector for the second polarization, calculating a second weight matrix based on the weight vectors of the first weight matrix, and applying the first and second weight matrix to the dual-polarized array elements to generate a second beam covering the selected area.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: March 31, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Sven Oscar Petersson, Bjorn Gunnar Johannisson
  • Patent number: 8994589
    Abstract: An orientation and localization system is provided with spatial filtering capabilities that combines time polarization and space diversity to detect the direct lines of sight (LOS) and to deliver location and orientation estimates of mobile nodes.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: March 31, 2015
    Inventors: Abdelwahed Marzouki, Djamal Zeghlache
  • Patent number: 8994590
    Abstract: A method of forming an estimate of the two-dimensional position of a radio receiver relative to a plurality of radio transmitters each having an associated position estimate and a position uncertainty expressible as an uncertainty ellipse having major and minor axes, the method comprising using the uncertainty vectors describing the uncertainty ellipses of the radio transmitters in a predetermined coordinate system to define a new compound coordinate basis, and forming an estimate of the two-dimensional position of the radio receiver in the compound coordinate basis by projecting the major and minor axes of each uncertainty ellipse onto the new compound coordinate basis and calculating the position of the radio receiver by means of a weighted centroid that uses weighting values calculated in the new compound coordinate basis and position estimates of the plurality of the radio transmitters expressed in the compound coordinate basis.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: March 31, 2015
    Assignee: Cambridge Silicon Radio Limited
    Inventors: Murray Jarvis, Ben Tarlow
  • Patent number: 8994591
    Abstract: A location system and applications therefor is disclosed for wireless telecommunication infrastructures. The system is an end-to-end solution having one or more location systems for outputting requested locations of hand sets or mobile stations (MS) based on, e.g., CDMA, GSM, GPRS, TDMA or WIFI communication standards, for processing both local mobile station location requests and more global mobile station location requests via, e.g., Internet communication between a distributed network of location systems. The following applications may be enabled by the location system: 911 emergency calls, tracking, navigation, people and animal location including applications for confinement to and exclusion from certain areas, friend finder applications, and applications for allocating user desired resources based on the user's location.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: March 31, 2015
    Assignee: TracBeam LLC
    Inventors: Dennis J Dupray, Frederick W LeBlanc, Charles L Karr, Sheldon F Goldberg
  • Patent number: 8994592
    Abstract: An apparatus (10) for forming a three dimensional object (30) by layer-wise addition of a build material has a build-support (100) for supporting the object (30) during forming and a removable metallic base-layer (110) that is in the form of a mesh, film, sheet or foil. The base-layer (110) is removably securable to the build support (100).
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: March 31, 2015
    Assignee: MTT Technologies Limited
    Inventors: Simon P Scott, Chris Sutcliffe
  • Patent number: 8994593
    Abstract: A microstrip antenna includes a substrate having a first surface and an opposing second surface, a ground plane disposed at the first surface of the dielectric layer, and a conductive layer disposed at the second surface of the substrate. The conductive layer includes a continuous conductive trace comprising a plurality of linear segments arranged in a near-closed polygonal chain. The near-closed polygonal chain can define a truncated square spiral shape. Alternatively, the near-closed polygonal chain can define one of a near-closed pentagonal shape, a near-closed hexagonal shape, a near-closed heptagonal shape, and a near-closed octagonal shape.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 31, 2015
    Assignee: Peraso Technologies, Inc.
    Inventors: Mohammad Fakharzadeh, Mehrbod Mohajer
  • Patent number: 8994594
    Abstract: An antenna having a radiator comprising a conduct in a closed path driven by a plurality of microstrips connecting the radiator to a common, single feed and to a ground plane, with the radiator lying in a plane parallel to that of the ground plane. The radiator may be annular, with the feed located in its center. The relative location of the feed on the microstrips allows a lower input impedance to be leveraged to match a higher load impedance of the radiator. A single ended input drives all points of the radiator substantially in phase. In another embodiment, the antenna comprises a cylindrical choke one-quarter wavelength in length placed around the coax feed and connected to the underside of the ground plane.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 31, 2015
    Assignee: Neptune Technology Group, Inc.
    Inventor: Michael A Wilson
  • Patent number: 8994595
    Abstract: An antenna for receiving and transmitting a signal is provided. The antenna includes a connection portion receiving and transmitting the signal, a first radiation portion and a second radiation portion. The connection portion includes a first end, a second end and a third end, wherein the first end is configured at a first distance from a ground. The first radiation portion is connected to the second end, and includes at least one folding area forming thereon at least one folding segment, wherein the folding segment and the connection portion have therebetween a shortest distance being a second distance. The second radiation portion is connected to the third end.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 31, 2015
    Assignee: Arcadyan Technology Corp.
    Inventors: Chih-Yung Huang, Kuo-Chang Lo, Sy-Ben Wang
  • Patent number: 8994596
    Abstract: A multi-band inverted-F antenna including a ground plane, a signal feeding circuit, first, second and third main radiation parts is provided. The signal feeding circuit is electrically isolated from the ground plane and receives/transmits wireless signals. The first and the second main radiation part are both physically and electrically connected to the signal feeding circuit, and generate first and second frequency band operation modes for the inverted-F antenna, respectively. The third main radiation part is electrically isolated from the signal feeding circuit, the first and the second main radiation parts, and generates a third frequency band operation mode for the inverted-F antenna via to signal coupling between the first and the third main radiation parts and/or signal coupling between the second and the third main radiation parts.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: March 31, 2015
    Assignee: Arcadyan Technology Corporation
    Inventors: Jian-Jhih Du, Kuo-Chang Lo, Chih-Yung Huang
  • Patent number: 8994597
    Abstract: A portable electronic device is provided that has a hybrid antenna. The hybrid antenna may include a slot antenna structure and an inverted-F antenna structure. The slot antenna portion of the hybrid antenna may be used to provide antenna coverage in a first communications band and the inverted-F antenna portion of the hybrid antenna may be used to provide antenna coverage in a second communications band. The second communications band need not be harmonically related to the first communications band. The electronic device may be formed from two portions. One portion may contain conductive structures that define the shape of the antenna slot. One or more dielectric-filled gaps in the slot may be bridged using conductive structures on another portion of the electronic device. A conductive trim member may be inserted into an antenna slot to trim the resonant frequency of the slot antenna portion of the hybrid antenna.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: March 31, 2015
    Assignee: Apple Inc.
    Inventors: Robert J. Hill, Scott A. Myers, Robert W. Schlub, Dean F. Darnell, Zhijun Zhang
  • Patent number: 8994598
    Abstract: A GPS loop antenna attached to the front windshield of a vehicle to receive a circularly polarized wave which is improved in reception performance, that is, a loop antenna comprised of a loop-shaped antenna conductor receiving a circularly polarized wave, feed terminals connected to the two ends of the antenna conductor, and a parasitic element positioned near the antenna conductor and made of a conductor independent of the antenna conductor, all arranged on a sheet-like transparent film, wherein a looping line conductor is arranged around the loop antenna on the film. It is sufficient if the total length of the line conductor is about three times the antenna conductor.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: March 31, 2015
    Assignee: Fujitsu Ten Limited
    Inventors: Kazushige Ogino, Yoshio Umezawa
  • Patent number: 8994599
    Abstract: An RFID system includes an RFID antenna assembly configured to be positioned on a product module assembly of a processing system. The product module assembly is configured to releasably engage at least one product container. A first RFID tag assembly configured to be positioned on the at least one product container. The at least one product container is configured to position the first RFID tag assembly within a detection zone of the RFID antenna assembly whenever the product module assembly releasably engages the at least one product container.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 31, 2015
    Assignee: DEKA Products Limited Partnerhip
    Inventors: James J. Dattolo, David Blumberg, Jr., Eric J. VanWyk
  • Patent number: 8994600
    Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes one or more tapered loop antenna elements.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: March 31, 2015
    Assignee: Antennas Direct, Inc.
    Inventors: Richard E. Schneider, John Edwin Ross, III
  • Patent number: 8994601
    Abstract: An improved broadband omnidirectional antenna is distinguished by the following features: the omnidirectional antenna is in the form of a dual-polarized antenna, the dual-polarized antenna comprises a horizontally polarized radiating element (3) in addition to the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, the horizontally polarized radiating element (3) comprises slots (43, 43?) which are provided offset in the circumferential direction in the casing (11a) of the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, a feed device (111) for the horizontally polarized radiating element (3) being provided in the interior (11d) of the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, and the feed device (111) comprises separate feed devices (111a) for a plurality of slots (43, 43?), the respectively associated slots (43, 43?) being separately excited by means of said feed devices.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 31, 2015
    Assignee: Kathrein-Werke KG
    Inventors: Tanja Hefele, Manfred Stolle
  • Patent number: 8994602
    Abstract: A radiating element of a broadband antenna comprises a foot supporting first and second components disposed in a first plane which are two half-wavelength symmetrically fed dipoles generating a linear dual polarization, both comprising two arms. According to the invention, the radiating element further comprises at least one third component chosen from among a dipole or a patch disposed within a second plane placed above the first plane, and each of the components is made up of a volume fractal pattern.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: March 31, 2015
    Assignee: Alcatel Lucent
    Inventors: Jérôme Plet, Nicolas Cojean, Jean-Pierre Harel
  • Patent number: 8994603
    Abstract: The subject of this invention is a multiband antenna radiating element comprising a first pair of cross-polarization dipoles each of which comprises two collinear conducting arms, whereby the four conducting arms define a first radiating plane corresponding to a low frequency band. The radiating element also consists of at least a second pair of cross-polarization dipoles each of which comprises two collinear conducting arms, whereby the four conducting arms define a second radiating plan corresponding to a higher frequency band. The first and second radiating planes are parallel; the second radiating plane is positioned above the first from which it is electrically insulated and the surface of the first radiating plane covering the conducting arms of the first pair of dipoles is larger than the surface of the second radiating plane covering the conducting arms of the second pair of dipoles.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: March 31, 2015
    Assignee: Alcatel Lucent
    Inventors: Jean-Pierre Harel, Patrick Lecam, Jérome Plet, Aurélien Hilary
  • Patent number: 8994604
    Abstract: The present invention consists of an antenna comprising at least two radiating structures, said radiating structures taking the form of two arms, said arms being made of or limited by a conductor, superconductor or semiconductor material, said two arms being coupled to each other through a region on first and second superconducting arms such that the combined structure of the coupled two-arms forms a small antenna with a broadband behavior, a multiband behavior or a combination of both effects. According to the present invention, the coupling between the two radiating arms is obtained by means of the shape and spatial arrangement of said two arms, in which at least one portion on each arm is placed in close proximity to each other (for instance, at a distance smaller than a tenth of the longest free-space operating wavelength) to allow electromagnetic fields in one arm being transferred to the other through said specific close proximity regions.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: March 31, 2015
    Assignee: Fractus, S.A.
    Inventors: Carles Puente Baliarda, Jaume Anguera Pros, Jordi Soler Castany, Antonio Condes Martinez
  • Patent number: 8994605
    Abstract: A wireless IC device includes a wireless IC chip, a feeder circuit substrate which is coupled to the wireless IC chip and includes a feeder circuit including an inductance element, and a radiation plate. The inductance element includes a plurality of stacked layers having coil conductors electrically connected, and a coil conductor electrically connected in a middle portion of the inductance element is arranged at an end position in the coil axis direction and faces a coupling portion of the radiation plate.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: March 31, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Noboru Kato
  • Patent number: 8994606
    Abstract: Provided is an antenna including a planar conductor to be grounded, and a three-dimensional linear conductor having at least a linear conductor, another linear conductor, and still another linear conductor that are integrally formed. The linear conductor is provided perpendicularly to the major surface of the planar conductor. The another linear conductor is parallel to the major surface. Still another linear conductor is parallel to the major surface, and is provided perpendicularly to the another linear conductor.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: March 31, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naotake Yamamoto, Koichi Ogawa
  • Patent number: 8994607
    Abstract: A spiral antenna apparatus utilizes a noise suppression sheet that is interposed between the spiral antenna element and its ground plane. The noise suppression sheet permits an extremely compact spiral antenna apparatus while lessening antenna performance degradation.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: March 31, 2015
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Leon Y. Lin, Thomas O. Jones, III, David W. Brock, Peter S. Berens, Hale B. Simonds
  • Patent number: 8994608
    Abstract: A method for manufacturing a compound part comprises preparing a cavity in a receiving part, selecting a resin for application in the receiving part, applying the resin into the cavity, curing the applied resin, and simultaneously finishing the receiving part and the cured resin.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 31, 2015
    Assignee: Apple Inc.
    Inventors: Peter N. Russell-Clarke, Michael K. Pilliod
  • Patent number: 8994609
    Abstract: A transmission line feed for a surface wave medium having a dielectric substrate with an array of electrically conductive patches formed thereon. The transmission line feed includes a microstrip substrate, the microstrip substrate having a first permittivity which is lower than a second permittivity of the dielectric substrate of the surface wave medium, the microstrip substrate abutting against the dielectric substrate of the surface wave medium; a tapered microstrip disposed on the microstrip substrate, the tapered microstrip tapering from a relatively narrow end to a relatively wide end, the relative wide end terminating where the microstrip substrate abuts against the surface wave substrate; and an adapter for coupling a transmission line to the relatively narrow end of the tapered microstrip.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 31, 2015
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel J. Gregoire
  • Patent number: 8994610
    Abstract: A headset is described. The headset includes a frame configured to be worn substantially behind the ears of a user. The frame includes a top surface having a first plurality of attachment features and a bottom surface having a second plurality of attachment features. A boom is mechanically coupled to the frame. The boom supports an electronic device. A band is configured to be worn substantially across the crown of the head of the user. The band can be detachably coupled to the first plurality of attachment features such that the boom is oriented on a first side of the frame in a first mode of operation. The band can be detachably coupled to the second plurality of attachment features such that the boom is oriented on a second side of the frame in a second mode of operation.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 31, 2015
    Assignee: Symbol Technologies, Inc.
    Inventors: Nicole Tricoukes, Thomas K. Roslak, Mitchell Maiman, Jorg Schlieffers
  • Patent number: 8994611
    Abstract: A head-mounted type display device includes: a spectacle frame for fixture to a user's head; a body unit 2 fixed to the spectacle frame and having an image output unit from which image output unit image light of an image to be displayed is output; an eyepiece optical unit 3 for allowing image light output from the image output unit to be incident on the eyepiece optical unit, for guiding the incident image light to the corresponding eyeball 11 of the user with the spectacle frame being mounted on the user's head, and for displaying, as a virtual image, a magnified version of the image from the image output unit within a user's visual field; and an attachment means 4 for attaching the eyepiece optical unit 3 to the body unit in a replaceable manner.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: March 31, 2015
    Assignee: Olympus Corporation
    Inventors: Ryohei Sugihara, Seiji Tatsuta, Yoichi Iba
  • Patent number: 8994612
    Abstract: A virtual image display system includes a display device outputting image light, a circuit substrate driving the display device based on an image signal, a signal line connected to the circuit substrate and inputting the external image signal to the circuit substrate, a projection optical device projecting the image light from the display device, a light guide plate taking in the projected image light, and then, guiding the light to an external predetermined position, a housing member having a housing space housing respective members, and a first space communicated with the housing space and housing a part of the signal line inside, and a temple rotatably attached to the housing member via a hinge mechanism and having a second space communicated with the first space via the hinge mechanism inside. The signal line is routed from the first space into the second space via the hinge mechanism.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: March 31, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Takeshi Fujishiro
  • Patent number: 8994613
    Abstract: Methods and systems for customizing user-experience of media content and providing content of interest to a user are provided. A computing device, such as a wearable user device having a head-mounted display (HMD) may receive media content and physiological data associated with a user experiencing the media content. The received physiological data may include one of a pupillary response, a galvanic skin response, an electrocardiographic response, an electroencephalographic response, a body temperature response, or a blood pressure response. The computing device may determine a portion of the media content which corresponds to the physiological data, and accordingly search for content of interest to the user. The content of interest may then be provided to the user, thereby customizing the user-experience of the user. The content of interest to the user may be displayed on a display of the wearable user device.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: March 31, 2015
    Inventors: Michael Johnson, Joshua Weaver, Thad Starner
  • Patent number: 8994614
    Abstract: A head-mountable display comprises a frame configured to be mounted on a user's head. The frame defines left and right-hand eye display positions that are positioned in front of the respective eyes of the user. A left-hand display element is mounted with respect to the left-hand eye display position, and is operable to provide an image from a left-hand video signal to the user's left eye. A right-hand display element mounted with respect to the right-hand eye display position, and is operable to provide an image from a right-hand video signal to the user's right eye. At least one light emitting element is positioned on a right-hand periphery of the left-hand display element and at least one light emitting element is positioned on a left-hand periphery of the right-hand display element. A controller controls light emitted by the light emitting elements dependent upon the video signals to reduce luning.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 31, 2015
    Assignee: Sony Computer Entertainment Europe Limited
    Inventors: Ian Henry Bickerstaff, Simon Mark Benson
  • Patent number: 8994615
    Abstract: A method for driving a solid-state illumination source to emit light having a brightness determined by a control value involves selecting a control mode based at least in part on the control value. In one embodiment a constant current is supplied to the solid-state illumination source for control values in a low range, a frequency-modulated (FM) current is supplied to the solid-state illumination source for control values in a mid range and a pulse-with modulation (PWM) current is supplied to the solid-state illumination source for control values in an upper range.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: March 31, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Neil Messmer, Damir Wallener
  • Patent number: 8994616
    Abstract: In a Q-tuple anode matrix vacuum fluorescent display (VFD), a plurality of selected pixels are turned on one by one to sequentially emit lights in accordance with a display signal. Each selected pixel is selected from Q anode segments to be turned on to emit lights by turning on a first and a second grid electrode positioned adjacent to each other. Each selected pixel is formed of Q/2 anode segments in total including R anode segments sequentially disposed from a position closest to the first grid electrode and facing the second grid electrode and (Q/2?R) anode segments sequentially disposed from a position closest to the second grid electrode and facing the first grid electrode, R being an integer ranging from 1 to (Q/2?1).
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 31, 2015
    Assignee: Futaba Corporation
    Inventors: Tadayoshi Umetsu, Toshihiro Nishioka, Takashi Muguruma, Katsumi Takayama
  • Patent number: 8994617
    Abstract: A system and method for deriving a sequence of OLED non-uniformity test patterns. A pattern generator generates a full sequence of display patterns according to a transform function, such as a discrete cosine transformation or wavelet transformation. A driver drives a display with each of the sequence of patterns. A sensor senses a property of the display, such as a total current for the display, for each of the sequence of patterns. An extraction unit derives a pixel non-uniformity model using the sensed properties and an inverse of the transform function. Patterns that contribute less than a threshold amount to the non-uniformity model can be identified and deleted to derive a sparse sequence of patterns, which can be stored in a memory. The sparse sequence of patterns can be used to test the display and extract a set of pixel non-uniformity values. The pixel non-uniformity values can be used to generate a correction signal for the display.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 31, 2015
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Javid Jaffari, Arokia Nathan
  • Patent number: 8994618
    Abstract: Provided are a display device and an operating method thereof. The display device includes a display panel which includes a plurality of first, second, and third display pixels and a plurality of unit cells. The first, second, and third display pixels include a plurality of organic light emitting materials for displaying first, second, and third colors, respectively. Each of the unit cells includes one light sensing pixel adjacent to the first, second, and third display pixels.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangmyeon Han, Jonghwa Park
  • Patent number: 8994619
    Abstract: A display device includes: a display unit including pixels coupled to scan lines for transmitting scan signals, data lines for transmitting data signals, and light emission control lines for transmitting light emission control signals; a scan driver; a data driver; and a light emission driver. Each pixel includes: an OLED; a driving transistor to transmit a driving current corresponding to a data signal to the OLED; a first transistor to transmit the data signal to the driving transistor according to a first scan signal; a second transistor to apply a first power source voltage to a first electrode of the driving transistor according to a second scan signal, during an initialization period for initializing a gate electrode voltage of the driving transistor; and a capacitor including a first electrode coupled to a gate electrode of the driving transistor and a second electrode coupled to a first power source supply.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jin-Tae Jeong
  • Patent number: 8994620
    Abstract: A pixel circuit is disposed in correspondence to an intersection of a scanning line and a data line. The pixel circuit is provided with a wiring for shielding an relay electrode connected to a source of the transistor for controlling a current flowing to a light emitting element from the data line. The wiring has a structure in which an relay electrode located on the same layer as the data line, an relay electrode located on the same layer as the relay electrode, an electrode portion of a conductive layer between the data line and the relay electrode are electrically connected to each other.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 31, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Toya
  • Patent number: 8994621
    Abstract: A display device (100) includes a plurality of pixel circuits (10), a gate driver circuit (2) coupled to a plurality of scanning signal lines Gi and a plurality of control lines Ei, and a power control circuit (4) coupled to a plurality of power lines VPi via a common power line. The pixel circuits (10) each include an organic EL element, a plurality of TFTs, and a capacitor, and are controlled to collectively receive initialization potentials at the beginning of a frame through the power lines VPi, collectively perform threshold detection immediately thereafter, and then perform writing and light-emission operations. Thus, the aperture ratio of the pixel circuits (10) can be kept high, the power control circuit (4) typically has only one output buffer so that the circuit scale thereof is small, drive by potential is performed only once, so that power consumption is low, and threshold detection is performed only once, so that a sufficient amount of time can be ensured for a detection period.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: March 31, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noritaka Kishi, Noboru Noguchi
  • Patent number: 8994622
    Abstract: Display irregularities in light emitting devices, which develop due to dispersions per pixel in the threshold value of TFTs for supplying electric current to light emitting elements, are obstacles to increasing the image quality of the light emitting devices. An electric potential in which the threshold voltage of a TFT (105) is either added to or subtracted from the electric potential of a reset signal line (110) is stored in capacitor means (108). A voltage, in which the corresponding threshold voltage is added to an image signal, is applied to a gate electrode of a TFT (106). TFTs within a pixel are disposed adjacently, and dispersion in the characteristics of the TFTs does not easily develop. The threshold value of the TFT (105) is thus cancelled, even if the threshold values of the TFTs (106) differ per pixel, and a predetermined drain current can be supplied to an EL element (109).
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Yoshifumi Tanada
  • Patent number: 8994623
    Abstract: A pixel circuit includes: a switching transistor whose conduction is controlled by a drive signal supplied to the control terminal; a drive wiring adapted to propagate the drive signal; and a data wiring adapted to propagate a data signal. The drive wiring is formed on a first wiring layer and connected to the control terminal of the switching transistor. The data wiring is formed on a second wiring layer and connected to a first terminal of the switching transistor. A multi-layered wiring structure is used so that the second wiring layer is formed on a layer different from that on which the first wiring layer is formed.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Yukihito Iida, Katsuhide Uchino
  • Patent number: 8994624
    Abstract: A power supplying apparatus, a power supplying method, an organic light-emitting diode (OLED) display apparatus are provided. The OLED display apparatus includes: a plurality of components which are to perform an operation of the OLED display apparatus; a power supplying unit; a rectifier which rectifies an input voltage supplied from the power supplying unit; and a voltage level converter which converts a level of the input voltage rectified by the rectifier and supplies the input voltage having the converted level to the plurality of components.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-il Cho, Joon-hyun Yang, Byeong-cheol Hyeon
  • Patent number: 8994625
    Abstract: A method and system for programming, calibrating and driving a light emitting device display is provided. The system may include extracting a time dependent parameter of a pixel for calibration.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: March 31, 2015
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Peyman Servati
  • Patent number: 8994626
    Abstract: A display includes a pixel array part with pixels that each have at least one transistor whose conduction state is controlled by a drive signal input to a control terminal, and a scanner including a plurality of buffers that are formed of transistors. The buffers correspond to a pixel arrangement and output a drive signal to the control terminals of the transistors of the pixels. The transistors of the pixels and the transistors of the buffers are formed through irradiation with laser light that is moved for scanning in a predetermined direction and has a predetermined wavelength. The transistors in the buffers are formed in such a way that the channel length direction of the transistors is set parallel to the scan direction of the laser light.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Tetsuo Minami, Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8994627
    Abstract: A liquid crystal display includes data lines extending in a first direction, gate lines extending in a second direction between a first side and a second side of the liquid crystal display and crossing the data lines, and common voltage lines crossing the data lines and parallel with the gate lines. The gate lines include even gate lines coupled to a gate driver at near the first side and odd gate lines coupled to the gate driver at near the second side. The common voltage lines include even common voltage lines coupled to a common voltage supplier at near the second side and odd common voltage lines coupled to the common voltage supplier at near the first side.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Minwoo Kim, Minhyung Kim
  • Patent number: 8994628
    Abstract: A display apparatus includes a first sub-pixel and a second sub-pixel. The first sub-pixel and the second sub-pixel are electrically and respectively connected to a first gate line and a second gate line adjacent to each other and are electrically connected to a data line. The display apparatus further includes a connection line disposed between sub-pixel electrodes of the first and second sub-pixels. The connection line has two ends connected to the data line and serves as an additional or alternative path for transmitting a data signal that is transmitted by the data line.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Shin Tack Kang, Gyutae Kim
  • Patent number: 8994629
    Abstract: According to an embodiment, a gate shift register includes a plurality of stages cascade-connected to each other. An nth one of the stages includes: a pull-up transistor that outputs any one of gate shift clocks as an nth scan pulse of a gate high voltage in accordance with the potential of a Q node; a pull-down transistor that is connected to the pull-up transistor through an output node, and outputs a low-potential voltage as an nth scan pulse of a gate low voltage in accordance with the potential of a QB node; and a switching circuit that charges and discharges the Q node and the QB node, respectively, or vice versa in response to a set signal and a reset signal, wherein an adaptively adjusted variable high-potential voltage is applied to the QB node to correspond to a shift in the threshold voltage of the pull-down transistor.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 31, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Binn Kim
  • Patent number: 8994630
    Abstract: An apparatus for driving a display panel includes a first memory which stores a frame image data, a second memory which stores overshooting information. The apparatus receives an image signal from an external system via a CPU interface process. The second memory stores a difference data between the frame image data and an overshooting data. The overshoot is then calculated from the difference data and the frame image data. The apparatus also includes a two-line memory which stores an image signal of an n-th frame in a line unit and an image signal of an n?1-th frame in another line. The two-line memory compares the consecutive two frame data, so that the apparatus extracts overshooting information from a look up table.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Jin Pak, Joo-Hyung Lee, Ho-Suk Maeng, Young-Ok Cha
  • Patent number: 8994631
    Abstract: An LCD device includes at least one data line, a plurality of first pixel cells connected in common to one side of the data line, a timing controller for alternately outputting first and second-polarity data signals at intervals of at least two successive periods, a data modulator for outputting the first and second-polarity data signals supplied from the timing controller, the data modulator modulating a grayscale value of one of the first and second-polarity data signals respectively supplied in two successive periods from the timing controller, and outputting the modulated data signal, and a data driver for receiving the first and second-polarity data signals from the data modulator, and alternately outputting the first and second-polarity data signals at intervals of at least two successive periods, to supply the first and second-polarity data signals to the data line.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 31, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Min Doo Chun, Nam Wook Cho, Soo Young Yoon, Seung Chan Choi
  • Patent number: 8994632
    Abstract: A liquid crystal display device includes a plurality of video signal lines that extends in columns in a display area, a plurality of inversion control signal line each supplied with an inversion control signal for controlling inversion, a first selector that selects one of a pair of amplifiers different in the polarity from each other to input signals corresponding to a pair of adjacent video signal lines on the basis of the inversion control signal, and a second selector that selects one of a pair of the corresponding adjacent video signal lines to input signals output from the pair of amplifiers on the basis of the inversion control signal, in which at least one of the signals to be supplied to the plurality of inversion control signal lines is a signal different from other signals.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 31, 2015
    Assignee: Japan Display Inc.
    Inventors: Keitoku Kato, Hiroyuki Nitta, Gou Yamamoto
  • Patent number: 8994633
    Abstract: A video processing circuit for a liquid crystal panel is disclosed. The video processing circuit includes: a risk boundary detecting unit configured to detect a risk boundary that is a portion of boundaries each between a first pixel whose applied voltage that is specified by an input video signal is below a first voltage and a second pixel whose applied voltage exceeds a second voltage higher than the first voltage, the risk boundary being determined by a tilt azimuth of the liquid crystal; an identification unit configured to identify a first pixel that is surrounded by the risk boundary at least two edges, in first pixels adjacent to the boundaries; and a replacement unit configured to replace, a voltage to be applied to a liquid crystal element corresponding to the first pixel, the voltage being specified by the input video signal, with a predetermined third voltage.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: March 31, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hiroyuki Hosaka, Hidehito Iisaka
  • Patent number: 8994634
    Abstract: Disclosed is a display device. The display device includes first and second substrates, a plurality of gate lines and data lines, a connection line, a signal line, and a first bridge. The first and second substrates face each other. The gate lines and data lines are formed on the first substrate to define a plurality of pixels by an intersection therebetween. The connection line is formed on the first substrate to be electrically connected to the gate line. The signal line is formed on the second substrate for supplying a signal to the gate line. The first bridge is formed on the second substrate for electrically connecting the signal line and the connection line.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 31, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: JaeHyung Jo, JongSin Park
  • Patent number: 8994635
    Abstract: The invention provides an image display device capable of reducing the transmission delay of a scanning signal. A plurality of scanning signal lines are wired in one pixel circuit row. Pixel circuits of the pixel circuit row are connected to any of the plurality of scanning signal lines.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: March 31, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kenta Kajiyama, Takeshi Izumida, Norihiro Nakamura, Naoki Tokuda
  • Patent number: 8994636
    Abstract: It is an object to provide a display device which can favorably display a image without delayed or distorted signals. The display device includes a first gate driver and a second gate driver. The first gate driver and the second gate driver each include a plurality of flip flop circuits and a plurality of transfer signal generation circuits. Both the flip flop circuit and the transfer signal generation circuit are circuits which output a signal inputted to a first input terminal with a half clock cycle delay. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage. Therefore, delay and distortion of the signal which is inputted from the transfer signal generation circuit to the flip flop circuit can be reduced.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: March 31, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki