Shifting Means Patents (Class 345/61)
  • Patent number: 10297220
    Abstract: Embodiments of the invention disclose a gate driving circuit and a corresponding display device. The gate driving circuit comprises: an area gating control module for gating a corresponding area in a circuit to be driven according to the received area control signal, a gate line gating control module gating a corresponding gate line in a gated area of the circuit to be driven, and a gate driving signal output module, and of which an output terminal is connected to a corresponding gate line, wherein if the logic value represented by the received gate line gating signal is 1, the gate driving signal output module outputs a driving signal for turning on the gate line, and otherwise, outputs a driving signal for turning off the gate line.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 21, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Quanhua He, Hao Zhang, Lingyun Shi, Junjie Ma, Jinshan Liu, Zijiao Xue
  • Patent number: 10169649
    Abstract: An image filtering system for compliance assessment is built and modified dynamically. The system defines a vocabulary for a domain by extracting entities from corpus documents and grouping entities into image categories. An image catalog is built by identifying objects in images from a system image catalog and associating the objects with entities in the image categories. Compliance rules are generated by identifying and using image categories related to topics in corpus data sources. An image classification pipeline is then trained to classify images according to the compliance rules until performance metrics are met. The training process may be repeated to extract new and updated knowledge in corpus document and/or corpus data sources. For compliance assessment of an image, entities in related image categories are identified. The image is then classified according to actions associated with any applicable compliance rules.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: January 1, 2019
    Assignee: International Business Machines Corporation
    Inventors: Nadiya Kochura, Fang Lu
  • Patent number: 10095944
    Abstract: The present disclosure provides systems and methods to enable detection of linear objects such as utility poles in complex and heterogeneous outdoor surroundings. The methods deal with shape and orientation as prominent features of a pole model. Candidate trapeziums from 2D images of the face of the poles are extracted, some of which represent parts of the pole. To overcome the missed detection of certain parts due to problems of occlusion and diffusion into background, shape based techniques, that extrapolate and capture a longer trapezium representing the pole is implemented. The region growing stage or extrapolation is driven by orientation-based clustering of trapeziums. Context information is further used to identify objects of interest, by discarding false positives. Besides detecting poles of interest, the detected poles are further analyzed to identify damages, if any.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: October 9, 2018
    Assignee: Tata Consultancy Services Limited
    Inventors: Hrishikesh Sharma, Adithya Vellaiappan, Balamuralidhar Purushothaman
  • Patent number: 9858502
    Abstract: An approach for land cover classification, seasonal and yearly change detection and monitoring, and identification of changes in man-made features may use a clustering of sparse approximations (CoSA) on sparse representations in learned dictionaries. The learned dictionaries may be derived using efficient convolutional sparse coding to build multispectral or hyperspectral, multiresolution dictionaries that are adapted to regional satellite image data. Sparse image representations of images over the learned dictionaries may be used to perform unsupervised k-means clustering into land cover categories. The clustering process behaves as a classifier in detecting real variability. This approach may combine spectral and spatial textural characteristics to detect geologic, vegetative, hydrologic, and man-made features, as well as changes in these features over time.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: January 2, 2018
    Assignee: Los Alamos National Security, LLC
    Inventors: Daniela Moody, Brendt Wohlberg
  • Patent number: 9810191
    Abstract: This invention relates to an engine for a vehicle using alternative fuel, preferably gas, comprising an engine (5) having a spark ignited ignition system (2) wherein said ignition system (2) includes misfire detection by means of a sensor device (4) providing information to a control system (20), connected to or within said ignition system (2), and wherein said combustion includes diluted operation to optimize emissions wherein said sensor device (4) includes an ion sensing measurement means (40) arranged to measure an ion current in said engine (5) and that said ignition system (2) has a built-in function to detect misfiring through an analysis of the ion current of the engine (5) during combustion.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: November 7, 2017
    Assignee: SEM AB
    Inventors: Jörgen Bengtsson, Lars-Åke Andersson, Bert Gustafsson
  • Patent number: 8965079
    Abstract: An in-vivo device captures images of the GI system and transfers frames to an external system for analysis. As frames are transferred from the in-vivo device to the external system frames may be classified as belonging to a particular GI section. Based on statistical analysis of the classes, a temporary determination may be made, that the in-vivo device has transitioned to a “target section”, and, as a result of the temporary determination, the operation mode of the in-vivo device may temporarily change from a first mode to a second mode. If the temporary determination is followed by a determination which is based on analysis of additional classes, the determination that the in-vivo device is in the target section may be made final and the in-vivo device may remain in the second mode. Otherwise, the first operation mode may be resumed and the whole transition determination process may start anew.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: February 24, 2015
    Assignee: Given Imaging Ltd.
    Inventors: Ofra Zinaty, Eduard Rudyk
  • Patent number: 8963809
    Abstract: A method for high performance caching is disclosed. The method generally includes steps (A) and (B). Step (A) may fetch a plurality of reference samples of a reference image from a first circuit to a cache of a second circuit. The cache may include a plurality of cache blocks and a plurality of valid bits. Each of the cache blocks generally corresponds to at most one of the valid bits. A size of the cache blocks may match a smallest read access size of the first circuit. Step (B) may transfer the reference samples having the corresponding valid bit set to valid from the cache to a processor of the second circuit.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Ambarella, Inc.
    Inventors: Leslie D. Kohn, Sydney D. Reader
  • Patent number: 8842360
    Abstract: An electrowetting display device includes a black matrix that includes a plurality of openings corresponding to pixels, respectively, a first extension portion extending in a driving direction of an electrowetting layer, the driving direction being a direction in which motion of the electrowetting layer is induced when a voltage difference is applied between a common electrode and a pixel electrode, and a partition wall that partitions the pixels. The first extension portion includes first and second areas respectively extending in opposite directions to each other and a third area having a width substantially the same as a width of the partition wall. The first area has a width less than about half of a first length corresponding to a length extending between both sides of each pixel in the driving direction, and the second area has a width less than the width of the first area.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: September 23, 2014
    Assignee: Liquavista B.V.
    Inventors: SeungBo Shim, Sungkyun Park, Yong Jun Park, Hyun Sup Lee, Jinho Ju
  • Patent number: 8836633
    Abstract: In a display driving circuit, odd-stage shift registers (SRs) are cascaded; and even-stage SRs are cascaded. The SRs support dual direction shifting. Each SR includes: first, second, third, and fourth transistors. The first transistor is coupled to a forward scan start signal from a third transistor of a former second SR, coupled to an output signal from the former second SR and coupled to a node. The second transistor is coupled to a reverse scan start signal from a fourth transistor of a next second SR, coupled to an output signal from the next second SR and coupled to the node. The third transistor is coupled to a forward operation voltage and coupled to the node, and further outputs a forward scan start signal. The fourth transistor is coupled to a reverse operation voltage and coupled to the node, and further outputs a reverse scan start signal.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 16, 2014
    Assignee: Innolux Corporation
    Inventors: Yi-Cheng Tsai, Hung-Chih Sun, Gau-Bin Chang, Yi-Yuan Lin
  • Patent number: 8665181
    Abstract: This disclosure relates to a method for driving an AC type plasma display panel. According to this disclosure, an elapse time period between an end time point of ramp-down and a time when a first scan pulse is applied is maintained to be uniform even when a ramp-down slope is different in such a manner that a comparator of a scan electrode driving circuit compares an output voltage with a reference voltage and a logic control circuit outputs a control signal to a logic control circuit when the output voltage is equal to the reference voltage. Accordingly, the method for driving the AC type plasma display panel is capable of improving an address characteristic and a driving margin.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: March 4, 2014
    Assignee: Orion Co., Ltd.
    Inventors: Hwan Woo Lee, Gap Sik Park
  • Patent number: 8466853
    Abstract: A driving method of a plasma display device according to an exemplary embodiment groups a plurality of address electrodes extending in a first direction into a plurality of groups, and logically divides each of the groups into a plurality of sub-groups. During a first period, a first pulse is sequentially applied to the plurality of groups, and a second pulse is sequentially applied to the plurality of sub-groups included in at least one of the plurality of groups during a second period following the first period. The first and second periods are address periods for sensing in a second direction crossing the first direction.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 18, 2013
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Tae-Yong Song, Suk-Jae Park, Woo-Joon Chung
  • Patent number: 8411006
    Abstract: In a display device having a plurality of scan signal line driving circuits, its display quality is improved. The display device comprises a plurality of scan signal lines, a plurality of image signal lines, and a plurality of scan signal line driving circuits for generating scan signals for driving the scan signal lines. Each of the scan signal line driving circuit internally generates a driving signal having the waveform of such potential variation that the potential decreases with a slope from a high potential to an intermediate potential between the high potential and a low potential. Each of the scan signal line driving circuits further includes a signal wiring for connecting the scan signal line driving circuits to one another and applying the driving signal.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: April 2, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihiro Yanagi, Kazuhiro Tani
  • Patent number: 8363040
    Abstract: A display device (10) includes an upper substrate (first substrate) (2), a lower substrate (second substrate) (3), and a conductive liquid (16) that is sealed in a display space (S) formed between the upper substrate (2) and the lower substrate (3) so as to be moved toward an effective display region (P1) or a non-effective display region (P2). In the display device (10), a signal electrode (4), a reference electrode (5), and a scanning electrode (6) are configured so that voltages in a predetermined voltage range can be independently applied to the respective electrodes. The same voltages (third voltage and fourth voltage) are applied to the reference electrode (5) and the scanning electrode (6) that are provided on the lower substrate (3) so as to be located on the effective display region (P1) side and the non-effective display region (P2) side, respectively.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: January 29, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiki Matsuoka, Akio Miyata, Tomoko Teranishi, Shinichi Nakano, Kazuhiro Deguchi
  • Patent number: 8355017
    Abstract: The wall charge is appropriately adjusted in the initializing period, and occurrence of an abnormal discharge and an unlit cell is suppressed in the address period. Therefore, a plasma display device has a plasma display panel having a plurality of discharge cells including a display electrode pair that is formed of a scan electrode and a sustain electrode, and a scan electrode driving circuit. The scan electrode driving circuit disposes a plurality of subfields having an initializing period, an address period, and a sustain period in one field, generates a decreasing down-ramp voltage in the initializing period, and generates a negative scan pulse voltage and applies it to the scan electrodes in the address period. In the initializing period, after the generation of the down-ramp voltage, the scan electrode driving circuit generates negative pulse voltage lower than the minimum voltage of the down-ramp voltage and applies it to the scan electrodes.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: January 15, 2013
    Assignee: Panasonic Corporation
    Inventors: Naoyuki Tomioka, Hidehiko Shoji
  • Patent number: 8319705
    Abstract: The plasma display device has a display panel having first and second display electrodes and address electrodes, an electrode drive circuit, and a drive control circuit for controlling the electrode drive circuit. The drive control circuit performs a reset drive control, address drive control and sustain drive control in each subfield. The drive control circuit performs an all cell reset drive control which resets all cells in a first subfield out of the plurality of subfields, and an ON cell reset drive control which resets ON cells in a second subfield. At a first temperature T1, an ultimate potential of an slope pulse of the first display electrode is controlled to be a first potential in the ON cell reset drive control, and at a second temperature T2>T1, the ultimate potential is controlled to be a second potential higher than the first potential.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: November 27, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Kumagai, Katsumi Ito
  • Patent number: 8305298
    Abstract: A plasma display apparatus and method of driving the plasma display apparatus are described. The plasma display apparatus has a plasma display panel that has a first electrode, a second electrode, and a third electrode. The plasma display apparatus also includes a first driver, a second driver and a third driver. The first driver supplies to the first electrode a first signal that decreases gradually from a first voltage to a second voltage during a setdown period of a reset period. The third driver supplies to the third electrode a third signal that increases from a third voltage to a fourth voltage during the setdown period of the reset period.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: November 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Gun Su Kim, Yong Song
  • Patent number: 8289351
    Abstract: A method for driving a display includes following steps. A display panel is divided into a plurality of bright regions and a plurality of dark regions, wherein the dark regions and the bright regions are alternately arranged so that the bright regions within the display panel are not adjacent to each other. Next, a full-color frame is divided into four sub-frames, wherein the sub-frames are matched with the four color-orders one by one. In this way, the display randomly displays the sub-frames in a frame period.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: October 16, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ke-Horng Chen, Chun-Ho Chen, Shian-Jun Chiou, Han-Ping Shieh, Ti-Ti Liu
  • Patent number: 8289233
    Abstract: Visual artifact reduction method for a display comprising the use of error diffusion. Other artifact reduction methods can be used with error diffusion, including gamma correction, dithering, and center of light.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: October 16, 2012
    Assignee: Imaging Systems Technology
    Inventors: Jeffrey W. Guy, Carol Ann Wedding
  • Patent number: 8254734
    Abstract: A virtual electronic switch system for a vehicle is provided. In one example, the system includes a switch assembly, a switch interface, and a computer. The switch assembly provides actuators that interface with non-contact sensors in the switch interface. The computer is coupled to the switch interface and assigns functions to each of the actuators. The non-contact sensors detect movement of the actuators and signal the computer, which manipulates an electrical system in the vehicle based on the assigned function.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: August 28, 2012
    Assignee: Veedims, LLC
    Inventor: Claudio R. Ballard
  • Patent number: 8248348
    Abstract: A level shift circuit includes first and second level shifters which respectively output first and second output signals that are produced by level shifting two kinds of input clock signals whose high level periods do not overlap. The level shift circuit also includes control transistors and control lines which, together, prevent a feedthrough current from flowing into the second level shifter when the first output signal is high level, and prevent a feedthrough current from flowing into the first level shifter when the second output signal is high level, so as to suspend the level shift operation of the first and second level shifters. With the level shift circuit, power consumption during a specific time period in a non-active period of the clock signal can be eliminated, where the specific time period of one clock signal is the active period of the other clock signal.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: August 21, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuhichiroh Murakami, Seijirou Gyouten, Hajime Washio, Eiji Matsuda, Sachio Tsujino, Shunsuke Hayashi
  • Patent number: 8237629
    Abstract: Disclosed is a method of driving a plasma display panel. In this method, one field corresponding to one image is divided into a plurality of sub-fields, and at least one second sub-field is arranged after a first sub-field. In the first sub-field, the method comprises a first step of forming wall charges with negative polarity near the scanning electrode and forming wall charges with positive polarity near the common electrode and the data electrode; a second step of adjusting an amount of the wall charges with negative polarity near the scanning electrode and an amount of the wall charges with positive polarity near the common electrode and the data electrode; a third step of generating a writing discharge in a selected display cell of the display cells; a fourth step of generating light emission for display; and a fifth step of erasing a part of the wall charges in the display cell which emits light in the fourth step.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 7, 2012
    Assignee: Panasonic Corporation
    Inventors: Hajime Homma, Mitsuhiro Ishizuka, Shinji Hirakawa, Shinya Tsuchida, Koji Hashimoto
  • Patent number: 8120628
    Abstract: A method for driving a display is provided. According to the driving method, a display panel is divided into a plurality of bright regions and a plurality of dark regions, wherein the dark regions and the bright regions are alternately arranged so that the bright regions within the display panel are not adjacent to each other. Next, a full-color frame is divided into four sub-frames, wherein the sub-frames are matched with the four color-orders one by one. In this way, the display randomly displays the sub-frames in a frame period.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: February 21, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ke-Horng Chen, Chun-Ho Chen, Shian-Jun Chiou, Han-Ping Shieh, Ti-Ti Liu
  • Patent number: 8115702
    Abstract: A plasma display device and a method of driving the same, capable of reducing or preventing the deterioration of components such as a switching device, due to an overcurrent. In a reset period, in order to cause the voltage of a scan electrode to ramp down from a first voltage to a second voltage, a panel driver includes a falling ramp switch that repeats turn-on/turn-off operations, alternately coupling and de-coupling a low-level power supply to the scan electrode, resulting in a gradually falling ramp waveform. A switch controller generates a switching pulse to control the falling ramp switch. Each turn-on time of the switching pulse for the initial falling ramp waveform following a power-on of the plasma display device is controlled to be shorter than each turn-on time of the switching pulse for other falling ramp waveform.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 14, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ito Kazuhiro, Yoo-jin Song, Tae-wook Kim
  • Patent number: 8026868
    Abstract: A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plurality of scan electrodes, a plurality of data electrodes, a scan driver and a data driver. The scan driver scans the plurality of scan electrodes during an address period in one scanning type of a plurality of scanning types having different scanning orders. Further, the scan driver supplies a scan signal, of which the duration of a voltage rising period is different from the duration of a voltage falling period, to the scan electrodes when scanning the scan electrodes. The data driver supplies a data signal to the data electrodes depending on the scanning type selected from the plurality of scanning types.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: September 27, 2011
    Assignee: LG Electronics Inc.
    Inventors: Jongwoon Bae, Kirack Park, Seonghwan Ryu, Yoonjoo Cho, Dooyong Hwang
  • Patent number: 8013808
    Abstract: A panel driving method has, in one filed time period, an all-cell initializing subfield for causing initializing discharge in all discharge cells for displaying an image in the initializing period, and a selection initializing subfield for selectively causing initializing discharge in the discharge cell that has caused sustaining discharge in the last subfield in the initializing period. The number of all-cell initializing subfields can be increased and decreased, and the initializing voltage for causing initializing discharge in the all-cell initializing subfield can be varied. At least one of the number of all-cell initializing subfields and the initializing voltage of the all-cell initializing subfields in one field is controlled based on the accumulation of the panel power-on time.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: September 6, 2011
    Assignee: Panasonic Corporation
    Inventors: Minoru Takeda, Shigeo Kigo, Takeru Yamashita, Tooru Kawase
  • Patent number: 7990340
    Abstract: The present invention relates to a plasma display apparatus including a sustain driving apparatus that supplies a sustain signal to a panel. The plasma display apparatus includes a panel in which a front substrate having formed first and second electrodes therein and a rear substrate are coalesced, a sustain driver including a first switch for applying a first voltage to any one of the first and second electrodes and a second switch for applying a second voltage, and a circuit protection unit that controls one of the first and second switches, which has a voltage higher than a predetermined voltage, at its both ends, not to turn on. According to the present invention, when a voltage at both ends of the switch included in the sustain driving apparatus in order to supply the sustain signal is higher than a reference voltage, the switch is controlled not to turn on.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: August 2, 2011
    Assignee: LG Electronics Inc.
    Inventors: Hyun Il Park, Chang Young Kwon, Yun Kwon Jung, Jong Sik Lim, Kyu Choon Cho, Yang Ki An
  • Patent number: 7986316
    Abstract: The invention relates to a method for power level control of a display device and an apparatus for carrying out the method. Classically, a power level mode defining a subfield organization to be used for subfield coding is selected as a function of the average power level of the picture to be displayed for keeping constant the power consumption of the display device. According to the invention, it is proposed to select the power level mode as a function of the input frame frequency in such a way as to have as little as possible deviations from nominal peak white and full white values at the same time that an overloading of the panel power supply is prevented. More particularly, the number of sustain pulses within the video frame and selected by the power level mode is modified as a function of the input frame frequency.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: July 26, 2011
    Assignee: Thomson Licensing
    Inventors: Carlos Correa, Cédric Thebault, Rainer Zwing
  • Patent number: 7982730
    Abstract: The invention relates to a new method for power level control of a display device and an apparatus for carrying out the method. Classically, the contrast/brightness control and the power management (based on an average power level control) are made independently. These two controls can be contradictory. According to the invention, the power level mode and more particularly the number of sustain pulses within the video frame is selected as a function of the average power level (APL) of the picture to be displayed and the picture control signal representing the desired contrast and/or brightness value.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: July 19, 2011
    Assignee: Thomson Licensing
    Inventors: Carlos Correa, Cédric Thebault, Rainer Zwing
  • Patent number: 7978153
    Abstract: The plasma display device includes connecting means for connecting the X/Y electrodes of the plasma display panel and the X/Y electrode drive circuits. In the X electrode pattern and the Y electrode pattern on the printed board in the connecting means, a current path connecting the center electrodes of the plasma display panel and the X electrode drive circuit or Y electrode drive circuit is longer than a current path connecting the peripheral electrodes and the X electrode drive circuit or Y electrode drive circuit. The current paths at the plasma display panel side are in the U-shape folded in the upper part and the lower part in the periphery of the plasma display panel, respectively. Also, the current paths are first connected to the upper or lower electrodes, and then sequentially connected to the center electrodes via the upper part and the lower part.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: July 12, 2011
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Sojiro Hagihara, Akihiro Machida, Hidenori Ohnuki, Hideaki Ohki
  • Patent number: 7969429
    Abstract: The collector, emitter, and base of a bipolar transistor circuit are connected to a high side power supply terminal, the drain of a level shift transistor, and a floating power supply terminal, respectively. When a high side output transistor is on, the floating power supply terminal is at the potential of a high potential power supply terminal. The high side power supply terminal is at a potential higher than the potential of the floating power supply terminal by a constant voltage. Turning the level shift transistor on, its drain potential drops below the potential of the floating power supply terminal; The base current flows through the bipolar transistor circuit and the drain potential of the level shift transistor is clamped near the potential of the floating power supply terminal; The bipolar transistor circuit is turned on and its collector current supplies the drain current of the level shift transistor.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Masahiko Sasada, Hiroki Matsunaga, Masashi Inao, Hiroshi Ando, Jinsaku Kaneda, Eisaku Maeda, Akihiro Maejima
  • Patent number: 7884783
    Abstract: A data driver including a first digital-to-analog converter configured to select first and second reference voltages depending on upper bits of data and supply the first and the second reference voltages to a first line and a second line, respectively, a second digital-to-analog converter having the first line and the second line to receive the first and the second reference voltages, respectively, a first group of voltage dividing resistors between the first line and the second line and configured to generate a plurality of gray scale voltages, a voltage dividing resistor unit between the first line and the second line, and at least one switch positioned between the voltage dividing resistor unit and one of the first line and the second line, and including a decoder unit configured to control on and off state of the at least one switch depending on lower bits of data.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: February 8, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventor: Sang Moo Choi
  • Patent number: 7856158
    Abstract: A virtual electronic switch system for a vehicle is provided. In one example, the system includes a switch assembly, a switch interface, and a computer. The switch assembly provides actuators that interface with non-contact sensors in the switch interface. The computer is coupled to the switch interface and assigns functions to each of the actuators. The non-contact sensors detect movement of the actuators and signal the computer, which manipulates an electrical system in the vehicle based on the assigned function.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: December 21, 2010
    Inventor: Claudio R. Ballard
  • Patent number: 7839359
    Abstract: Disclosed are a plasma display apparatus and a driving method thereof. The plasma display apparatus includes a plasma display panel having a plurality of address electrodes, a data driver, and a timing controller. The data driver supplies a plurality of data pulses to the plurality of the address electrodes and the timing controller controls a width of a first data pulse of the plurality of data pulses to be different from a width of a second data pulse of the plurality of data pulse.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: November 23, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yoonchang Choi, Jung Gwan Han, Chi Yun Ok, Hyun Lark Do, Kyoung Jin Jung
  • Publication number: 20100277465
    Abstract: The wall charge is appropriately adjusted in the initializing period, and occurrence of an abnormal discharge and an unlit cell is suppressed in the address period. Therefore, a plasma display device has a plasma display panel having a plurality of discharge cells including a display electrode pair that is formed of a scan electrode and a sustain electrode, and a scan electrode driving circuit. The scan electrode driving circuit disposes a plurality of subfields having an initializing period, an address period, and a sustain period in one field, generates a decreasing down-ramp voltage in the initializing period, and generates a negative scan pulse voltage and applies it to the scan electrodes in the address period. In the initializing period, after the generation of the down-ramp voltage, the scan electrode driving circuit generates negative pulse voltage lower than the minimum voltage of the down-ramp voltage and applies it to the scan electrodes.
    Type: Application
    Filed: March 27, 2009
    Publication date: November 4, 2010
    Inventors: Naoyuki Tomioka, Hidehiko Shoji
  • Publication number: 20100271352
    Abstract: A display device (10) includes an upper substrate (first substrate) (2), a lower substrate (second substrate) (3), and a conductive liquid (16) that is movably sealed in a display space (S) formed between the upper substrate (2) and the lower substrate (3). In the display device (10), an electrode member (f) for filling the conductive liquid (16) is provided in the display space (S) and configured so that a predetermined voltage can be applied thereto, and the conductive liquid (16) is filled in the display space (S) by applying the predetermined voltage to the electrode member (f).
    Type: Application
    Filed: August 7, 2008
    Publication date: October 28, 2010
    Inventors: Shinichi Nakano, Akio Miyata, Tomoko Teranishi, Toshiki Matsuoka, Kazuhiro Deguchi
  • Patent number: 7750870
    Abstract: A method and circuit to control of a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including use of a first one of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: July 6, 2010
    Assignee: STMicroelectronics SA
    Inventors: Jean-Raphael Bezal, Gilles Troussel, Jean-Marie Permezel
  • Patent number: 7742190
    Abstract: An image processing method includes the steps of detecting a dynamic range of input image data, performing resolution conversion processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels in the dithering processing is determined, based on a parameter indicating the level of the dynamic range and a parameter concerning the resolution conversion processing.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: June 22, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuhiro Hoshi
  • Patent number: 7737919
    Abstract: A plasma display device and a driving method thereof are provided. An input grayscale value is converted according to a peak grayscale value of an input video signal of one frame. The number of on-subfields may be increased as a result of the grayscale conversion. Therefore, a total number of sustain discharge pulses applied during the one frame is reset in order to obtain the same brightness for the input and converted grayscale values.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: June 15, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Seung-Ho Park
  • Patent number: 7737917
    Abstract: An interlace-type PDP is driven by an improved driving method so as to achieve a greater operating margin, higher resolution, and higher brightness. The interlace-type PDP is driven using odd and even frames in such a manner that the cells are grouped into cell groups such that each cell group includes two or three cells which are adjacent in a direction crossing the electrode pairs, and the cells are driven in units of cell groups. The grouping of cells is performed differently for even and odd frames such that, in one type of frame, locations of two or three cells grouped into each group are shifted by one cell, in the direction crossing the electrode pairs, from the locations of cells grouped together in the other type of frame.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: June 15, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Yasunobu Hashimoto, Hajime Inoue, Yoshiho Seo, Naoki Itokawa
  • Patent number: 7719485
    Abstract: The present invention relates to a plasma display apparatus and driving method thereof, and more particularly, to a plasma display apparatus implementing gray levels and driving method thereof. The plasma display apparatus according to the present invention comprises a plasma display panel in which a plurality of scan electrodes and a plurality of sustain electrodes are formed on a substrate, drivers for driving the plurality of the scan electrodes and the sustain electrodes, and a sustain pulse controller for controlling the drivers to set a total number of sustain pulses applied to the scan electrodes and the sustain electrodes to be at least one or more of a plurality of sub-fields in which a sub-field having an odd number constitutes one frame. The present invention can implement a finer gray level. Accordingly, half-tone noise when implementing a low gray level can be reduced and the picture quality can be improved.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: May 18, 2010
    Assignee: LG Electronics Inc.
    Inventors: Dae Jin Myoung, Seong Hak Moon
  • Patent number: 7714807
    Abstract: A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a driver supplying a first signal and a second signal to a scan electrode during a reset period of at least one of a plurality of subfields of a frame. The first signal gradually rises from a first voltage to a second voltage with a first slope, and then falls from the second voltage to a third voltage with a second slope. The second signal rises from the third voltage to a fourth voltage, and then gradually rises from the fourth voltage to a fifth voltage with a third slope.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: May 11, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yang Keun Lee, Kyung Ryeol Shim, Myung Soo Ham
  • Patent number: 7710372
    Abstract: A PDP data driver is provided in which input and output terminals are divided into a plurality of groups and a given group can be selected so as to output a high level. The PDP data driver is formed by a plurality of data driver ICs that are arranged. In an output control circuit of each data driver IC, input and output terminals are arranged in an order of a plurality of primary colors forming a screen and are divided into a plurality of groups. The output control circuit includes a first gate array and a second gate array in such a manner that gates of each array corresponds to the input and output terminals, respectively. For each of the groups, the first gate array is controlled to output input data without change or output a high level in accordance with a first control input and the second gate array is controlled to transfer all outputs of the first gate array without change or output a low level in accordance with a second control output.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: May 4, 2010
    Assignee: Panasonic Corporation
    Inventors: Shinji Hirakawa, Kazunari Takasugi
  • Patent number: 7701414
    Abstract: A plasma display panel includes a first substrate and a second substrate facing each other with discharge cells therebetween, first and second display electrodes formed to extend along a first direction and between the first and second substrates to correspond to the discharge cells, the first and second display electrodes facing each other with a space therebetween to expand in a third direction from the first substrate to the second substrate; and first and second address electrodes formed to extend along a second direction intersecting the first direction, between the first and second substrates, and separated from each other in the third direction.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: April 20, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Min Hur, Young-Do Choi
  • Patent number: 7692607
    Abstract: A method for adjusting an image on the basis of characteristics of a display system is provided. The image includes M horizontal lines. Each of the M horizontal lines respectively includes N pixels. Each pixel has an original gray level. A look-up table previously stores a plurality of conversion coefficients related to the characteristics of the display system. The method first calculates an ith loading according to the N original gray levels of the N pixels in the ith horizontal line. Based on the ith loading, an ith conversion coefficient corresponding to the ith loading is selected from the plurality of conversion coefficients in the look-up table. The method respectively multiplies the N original gray levels of the N pixels in the ith horizontal line by the ith conversion coefficient to generate N new gray levels for the N pixels in the ith horizontal line, whereby the image is adjusted.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: April 6, 2010
    Assignee: Marketech International Corp.
    Inventors: Hsu-Pin Kao, Yi-Sheng Yu, Yi-Chia Shan, Tsan-Hung Tsai
  • Patent number: 7675482
    Abstract: An apparatus for driving an interlaced plasma display panel (PDP), including a delay device, an image upper and lower edge detection device, an image border processing device, an image processing and analog control loop. The delay device receives an image signal, delays the image signal for two fields and outputs the delayed image signal. The image upper and lower edge detection device receives and analyzes the image signal, outputs the image upper and lower edge positions, saves and provides the odd field upper and lower edge data of the image signal. The image border processing device outputs the image signal after border processing according to the delayed image signal, the image upper and lower edge positions, the odd field upper and lower data. The image processing and analog control loop outputs a driving signal according to the image signal after border processing and the image upper and lower edge positions.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: March 9, 2010
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Hsu Lin, Chun-Lun Pan
  • Patent number: 7649509
    Abstract: A plasma display device and driving method. A plurality of subfields from one frame are divided into a first subfield group and a second subfield group. A first subfield and a second subfield having adjacent weights in the first subfield group each include a reset period for resetting the discharge cells, a first address period for selecting discharge cells in the first line group, a first sustain period for performing a sustain discharge, a second address period for selecting discharge cells in the second line group and a second sustain period for performing a sustain discharge.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 19, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Su-Yong Chae
  • Patent number: 7616174
    Abstract: An apparatus and method for driving a plasma display panel and includes two ramp switches. The two ramp switches are used to apply a two-step falling ramp waveform to a Y electrode of the plasma display panel in a reset period, thereby lowering a withstand voltage of a switch which is formed on a main path to block the flow of current when the falling ramp waveform is applied.
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: November 10, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Joo-Yul Lee
  • Patent number: 7612742
    Abstract: In a plasma display panel, a sustain discharge pulse voltage is applied to the scan or sustain electrodes while the address electrode is biased with a ground voltage, and a negative assistant pulse voltage is applied to an electrode that is not receiving the sustain discharge pulse. At least a part of a period for applying the negative assistant pulse is positioned prior to a period of applying the sustain discharge pulse. Discharge efficiency can be improved by applying the negative assistant voltage to the sustain electrode when the sustain discharge is applied to the scan electrode across a long discharge gap.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: November 3, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dong-Young Lee, Byung-Gwon Cho, Heung-Sik Tae
  • Patent number: 7612770
    Abstract: Systems for displaying images are provided. A representative system comprises a signal driving circuit comprising a plurality of shift registers connected in series and controlled only by a first clock and a second clock, generating corresponding driving pulses in turn in response to a start pulse. Each shift register comprises a pulse generation unit with a first clock input terminal receiving one of the first and the second clocks and a first power terminal coupled to a first power voltage, and a leakage protection unit coupled to the pulse generation unit, electrically separating the first power voltage from the received clock at the first clock input terminal.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: November 3, 2009
    Assignee: TPO Displays Corp.
    Inventor: Ching-Hone Lee
  • Patent number: RE42182
    Abstract: A multi-lamps LCD back-light control circuit comprises a control unit, an full bridge switch, a resonance network circuit, a voltage transformer, a lamp, and a feedback network. A constant operating frequency and a pulse width modulation (PWM) feedback are used to control the CCFL current. The back-light control circuit is such that a power switch of the full bridge switch outputs a duty cycle that is controlled and changed via a PWM controller of the control unit, while a ground switch of the full bridge switch outputs a constant duty cycle controllable above 50%.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: March 1, 2011
    Assignee: Beyond Innovation Technology Co., Ltd.
    Inventor: Chung-Che Yu