Synchronizing Means Patents (Class 345/213)
  • Patent number: 8643781
    Abstract: Methods and systems for implementing video driving circuitry are disclosed. For example, in an embodiment, a system for driving a plurality of different types of video devices is disclosed. The system includes, for example, a System on a Chip (SoC) that itself includes a Liquid Crystal Display (LCD) controller circuit configured to generate digital video data, a first synchronization signal for controlling a first characteristic of the digital video data, and a second synchronization signal for controlling a second characteristic of the digital video data. The SoC further includes a delay circuit configured to variably delay the first synchronization signal and the second synchronization signal relative to the digital video data to generate a delayed first synchronization signal and a delayed second synchronization signal.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 4, 2014
    Assignee: Marvell Israel (M.I.S.L) Ltd.
    Inventors: Dan Ilan, Guy Nakibly, Eilon Argov
  • Patent number: 8643638
    Abstract: The display device includes a driving circuit and a panel. The driving circuit is configured to generate a source output enable signal having at least one pulse during one horizontal scanning period in response to a mode signal and configured to generate a source driving signal by latching an image data in response to the source output enable signal. The driving circuit is further configured to generate an internal horizontal synchronization signal in response to the source output enable signal and configured to generate a gate driving signal in response to the internal horizontal synchronization signal. The panel is configured to display the image data in response to the gate driving signal and the source driving signal.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: February 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Kon Bae, Hae-Woon Park, Min-Hwa Jang, Han-Min Cho, Young-Bae Moon
  • Publication number: 20140028659
    Abstract: A liquid crystal material is prevented from being degraded by a voltage to control the shift of the threshold voltage which is applied to a back gate on the same conductive film as a pixel electrode. A liquid crystal display device includes a pixel circuit including a pixel electrode which applies an electric field to a liquid crystal layer; and a driver circuit including a transistor including a first gate and a second gate with a semiconductor film interposed therebetween. The transistor overlaps with the liquid crystal layer. A signal for controlling on/off of the transistor is input to the first gate. A signal for applying a first voltage is input to the second gate in a gate line selection period. A signal for alternately applying the first voltage and a second voltage is input to the second gate in a vertical retrace period.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei YAMAZAKI, Jun KOYAMA
  • Publication number: 20140022234
    Abstract: There is provided a display device capable of displaying an image that barely changes with low power consumption on the basis of video data included in a transmitted command, and there is also provided a method for driving the same. A display timing controller (31) determines every frame period whether or not an externally transmitted command includes updated video data. As a result, when it is determined that no updated video data is included, screen refreshing is paused by not reading video data stored in frame memory (36). Moreover, when it is determined that updated video data is included, screen refreshing is performed by reading video data stored in the frame memory (36).
    Type: Application
    Filed: August 29, 2012
    Publication date: January 23, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yasuyuki Ogawa, Seiji Kaneko, Kaoru Yamamoto, Kohhei Tanaka, Seiichi Uchida, Yutaka Takamaru, Shigeyasu Mori
  • Patent number: 8633923
    Abstract: In order that a boost converter of an LDI can reduce electromagnetic interference by generating a panel driving voltage through the use of a variable frequency, while achieving a stable boosting operation using the same frequency whenever each frame begins, an oscillator generates an oscillation signal having a frequency, which varies in a predetermined pattern or hops in a random pattern around a center frequency, and generates an oscillation signal having a preset fixed frequency whenever each frame begins.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: January 21, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Yong-Sung Ahn, Jung-Min Choi, Sang-Rok Cha
  • Patent number: 8633868
    Abstract: An apparatus for displaying a three-dimensional (3D) image may include a plurality of display panels and a controller configured to apply image signals to each of the plurality of display panels. At least one of the display panels may include a transparent display panel. The plurality of display panels may be spaced apart from each other in a depth direction. A method of displaying a three-dimensional (3D) image may include displaying plane images on each of a plurality of display panels. At least one of the plurality of display panels may include a transparent display panel. The plurality of display panels may be spaced apart from each other in a depth direction.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: January 21, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-jung Kim, In-kyeong Yoo, Young-soo Park, Chan-hee Lee
  • Patent number: 8624806
    Abstract: A pixel circuit and an organic light-emitting diode (OLED) display using the pixel circuit is provided. The pixel circuit includes: an OLED; a third N-channel metal-oxide semiconductor (NMOS) transistor coupled to a data line and a first scan line and configured to apply a data signal to a first node; a storage capacitor having one terminal coupled to the first node and the other terminal coupled to a second node; a fourth NMOS transistor coupled between a first power and the second node and configured to apply a voltage of the first power to the second node; a first NMOS transistor having a first electrode, a second electrode, and a gate electrode coupled to the second node; and a second NMOS transistor coupled between the second node and the first electrode of the first NMOS transistor and configured to diode-connect the first NMOS transistor.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co, Ltd.
    Inventors: Bo-Yong Chung, Keum-Nam Kim
  • Patent number: 8626247
    Abstract: A mobile terminal having a dual display unit and a method of changing a display screen using the same are disclosed. The mobile terminal includes a main body, a front display unit for providing a multimedia mode, a rear display unit for providing a normal mode, and a screen control module for controlling to turn off the rear display unit and turn on the front display unit, and to display a multimedia execution screen in the front display unit. The method of changing a display screen of the mobile terminal having additional multimedia functions provides an optimum multimedia environment and improves user convenience and effectiveness of the mobile terminal by flexibly supporting a multimedia function to be executed according to a screen state of the rear display unit.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: January 7, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Sang Hyeon Yoon
  • Patent number: 8619069
    Abstract: A power-off discharge circuit comprises a power voltage detection unit that detects whether a first power voltage for driving a source driver circuit is blocked and generates a discharge control signal, and a discharge unit that discharges a load circuit in a display panel based on the discharge control signal.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Hong Ko, Ho-Hak Rho, Do-Yoon Kim
  • Patent number: 8621306
    Abstract: A panel driving circuit that produces a panel test pattern and a method of testing a panel are provided. The driving circuit includes a pattern generation unit and a selection unit. The pattern generation unit responds to a system clock and produces pattern test data and pattern test signals. The selection unit responds to a test signal and selects and outputs either (a) the pattern test data and the pattern test signals that are outputted from the pattern generation unit, or (b) the pattern test data and pattern test signals that are directly applied from the outside. The driving circuit and the method of the panel test generates the panel test data, the horizontal synchronizing signal, the vertical synchronizing signal, and the data activating signal within the driving circuit using a system clock so that the testing of the panel can be carried out without using a separate test device.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: December 31, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Sik Kang, Jae-Goo Lee
  • Patent number: 8614701
    Abstract: A gate driver of on embodiment of the present invention includes: a scan signal output circuit for performing alternately scanning whereby either odd-numbered scan signal lines or even-numbered scan signal lines are sequentially driven and scanning whereby the remaining scan signal lines are sequentially driven; a rise counter circuit for sensing the rise count for a clock signal in a HIGH level period of an externally supplied start signal; a scan sequence setup circuit for setting up a scan sequence to be followed by the scan signal output circuit according to the rise count; and a start signal generating circuit for generating a start signal to be supplied to a next scan signal line driver circuit. Hence, the resultant scan signal line driver circuit and method of driving a display device is capable of producing high quality images at low cost while restricting power consumption and heat generation by a data signal line driver circuit.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: December 24, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takuya Watanabe
  • Patent number: 8614702
    Abstract: A display control/drive device (a liquid crystal controller driver and a semiconductor integrated circuit for driving liquid crystals) which can serve to reduce peak currents and thereby restrain the occurrence of EMI is to be provided. In a liquid crystal display control/drive device in which image signals to be applied to signal lines of a color liquid crystal panel are generated in response to display image data that are received, image signals for pixels of the same color are divided into a plurality of groups. And during a period in which the substantial frame frequency can be reduced, the period of a line clock matching one horizontal period is extended to slightly stagger the output timing of image signals from one to another of the groups and the sequence of outputs from the different groups is periodically varied.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: December 24, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuhiro Okamura
  • Patent number: 8610647
    Abstract: The present invention retains a scanning line for power supply in a floating state in a pause provided halfway through a period of emission.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: December 17, 2013
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Katsuhide Uchino
  • Patent number: 8605065
    Abstract: The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: December 10, 2013
    Assignee: Sony Corporation
    Inventors: Tomoaki Handa, Takayuki Taneda, Katsuhide Uchino
  • Patent number: 8606076
    Abstract: A method of transmitting three dimensional video information over an interface from a playback device to a displaying device, the displaying device and the interface such that the properties of the displaying device can be queried over the interface, the method comprising determining one or more video format in which a compressed three dimensional video information is available to an input of the playback device, the three dimensional video information available either as stored on a record medium or received via a data transmission system; querying the displaying device over the interface with respect to one or more three dimensional video formats which the displaying device is able to process; selecting a best matching video format, wherein the best matching video format different from at least one available video format, the selection of the best matching video format based on the available video format and the video formats which the displaying device is able to process; processing the compressed three di
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: December 10, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Philip S. Newton, Francesco Scalori, Gerardus W. T. Van Der Heijden
  • Patent number: 8605078
    Abstract: A source driver and a display device having the same are provided. The source driver shares several outputs by using a time division method and has an analog voltage stored in a buffer supplied to each data line multiple times during a horizontal scanning interval. Accordingly, by supplying an analog voltage to a data line a first time in a first activation interval and supplying an analog voltage to a data line a second time in a second activation interval, a target voltage of each pixel may be achieved quickly and accurately.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Hak Baek, Yoon Kyung Choi, Oh-Kyong Kwon
  • Patent number: 8605076
    Abstract: Power consumption required for charging and discharging a source signal line is reduced in an active matrix EL display device. A bipolar transistor (Bi1) has a base terminal B connected to an output terminal c1 of an operational amplifier (OP1), a collector terminal C connected to a low power potential (GND), and an emitter terminal E connected to a resistor R2. A high power potential (VBH) is a potential in synchronization with a high power potential of a light emitting element. A potential of the output terminal c1 of the operational amplifier (OP1) is outputted as a buffer low power potential (VBL). The low power potential (VBL) corresponds to a potential difference between the high power potential (VBH) and a high power potential (V1). Accordingly, the low power potential (VBL) can follow the high power potential (VBH), that is a high power potential of the light emitting element.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: December 10, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoyuki Iwabuchi, Hiroyuki Miyake
  • Patent number: 8605079
    Abstract: An integrated circuit device having a data line driving circuit and a position offset addition circuit that connects position offsets based on position offset setting values, wherein, among first pixel to p-th pixel of a plurality of pixels, a position offset register stores a first position offset setting value corresponding to the first pixel and a p-th position offset setting value corresponding to the p-th pixel among the first pixel to the p-th pixel; among first image data to p-th image data respectively corresponding to the first pixel to the p-th pixel, the position offset addition circuit processes a position offset correction value based on the first position offset setting value to the first image data, and processes a position offset correction value based on the p-th position offset setting value to the p-th image data among the first image data to p-th image data, to correct the position offsets.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: December 10, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Akira Morita
  • Publication number: 20130321386
    Abstract: A driver device (10) of the present invention includes a scan line driving circuit (12) which carries out a first scan in which (i) the scan line driving circuit (12) starts to supply a first scan signal, which has an intermediate electric potential between a voltage of a low level in a time period during which an nth scan line (151) is not scanned and a voltage of a high level, to an (n+m)th scan line (151) during a scan period during which the nth scan line (151) is being scanned and (ii) the scan line driving circuit (12) stops supplying the first scan signal to the (n+m)th scan line (151) when scanning of the nth scan line (151) is completed.
    Type: Application
    Filed: February 20, 2012
    Publication date: December 5, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Atsuhito Murai, Masami Ozaki, Kohji Saitoh
  • Patent number: 8599186
    Abstract: In a pixel driving device that drives a plurality of pixels, each pixel includes a light emitting element and a pixel driving circuit comprising a driving device having one end of a current path connected to one end of the light emitting element and having another end of the current path to which a power-source voltage is applied. Provided in a controller is a correction-data obtaining function circuit which obtains a first characteristic parameter relating to a threshold voltage of the driving device of each pixel based on a voltage value of each data line after a first detection voltage is applied to each data line connected to each pixel, and a current is caused to flow through the current path of the driving device through the each data line with a voltage of another end of the light emitting element being set to be a first setting voltage.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: December 3, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Jun Ogura
  • Patent number: 8593445
    Abstract: A display apparatus employs a pixel array section including pixel circuits forming a matrix, signal lines as columns, scan lines as rows and power-supply lines, and driving sections. The driving sections are a signal selector, a write scanner and a drive scanner. The signal selector provides an electric potential representing a gradation or a predetermined reference electric potential. The write scanner provides a control signal. The drive scanner provides a power-supply voltage changing the electric potential from high to low. The drive scanner drives adjacent power-supply lines as a group. The number of lines as a group is determined in advance. The drive scanner switches a power-supply voltage from high to low and vice versa, and applies the voltage to groups by shifting the phase from group to group. The voltage is supplied to a group at the same phase and switched the electric potential.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: November 26, 2013
    Assignee: Sony Corporation
    Inventors: Tetsuro Yamamoto, Katsuhide Uchino, Naobumi Toyomura
  • Patent number: 8588281
    Abstract: A transceiver comprises a transmitter that converts a plurality of data components into serial data in response to a first clock signal and transmits the serial data, and a receiver that receives the serial data and converts the serial data into the plurality of data components in response to a second clock signal generated from the serial data. The transmitter adds at least one dummy bit to the serial data at predetermined intervals. The at least one dummy bit includes information regarding a data type of the plurality of data components.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: November 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woon-taek Oh, Jae-youl Lee, Jin-ho Kim, Tae-jin Kim, Ju-hwan Yi, Jong-shin Shin
  • Patent number: 8582029
    Abstract: A picture signal processing unit having a first and a second double rate conversion section, a storage section, and a quadruple rate conversion section is provided. The first double rate conversion section inserts a first interpolation frame between a couple of successive original frames to output the original frames and the first interpolation frames. The second double rate conversion section generates a second and a third interpolation frames and allocates the second and the third interpolation frames between the couple of successive original frames to output the second and the third interpolation frames. The storage section stores the original frame and the first to the third interpolation frames. The quadruple rate conversion section sequentially reads out the original frame and the first to the third interpolation frames from the storage section in a quadruple rate to output the original frame and the first to the third interpolation frames.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: November 12, 2013
    Assignee: Sony Corporation
    Inventors: Shinichiro Miyazaki, Tomoichi Fujisawa
  • Publication number: 20130286002
    Abstract: A driving apparatus applied in a liquid crystal display is disclosed. The driving apparatus at least includes a first latch, a second latch, an output buffer, and a slew rate enhancing module. The first latch is used to store a second data signal. The second latch is used to store a first data signal. The first data signal is previous to the second data signal. The slew rate enhancing module is used to compare the first data signal and the second data signal to generate a compared result, and correspondingly output a control signal to the output buffer according to the compared result to control a driving current of the output buffer.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 31, 2013
    Applicant: Raydium Semiconduction Corporation
    Inventor: Chih Chuan Huang
  • Patent number: 8570249
    Abstract: A pixel and organic light emitting display device. The pixel includes an organic light emitting diode, first through fourth transistors, and a second capacitor. The fourth transistor is for controlling an amount of current flowing through the organic light emitting diode. A first transistor is coupled between a second terminal of the second capacitor and a data line and is configured to turn on in response to a scan signal supplied to an i-th scan line. A second transistor is coupled between a first terminal of the second capacitor and an initial power source and is configured to turn on in response to an other scan signal supplied to an (i?1)-th scan line. A third transistor is coupled between the second terminal of the second capacitor and a reference power source and is configured to turn off in response to an emission control signal supplied to an (i+1)-th emission control line.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: October 29, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sam-Il Han
  • Patent number: 8570315
    Abstract: A method for fully-automatically aligning the quality of an image is provided. The method processes the video signals provided by the Video Graphic Array (VGA) display card in the computer system through the multi-sync display itself, and further interprets whether a computer host ID stored in the VGA display card or the computer host matches with a computer host ID stored in the multi-sync display, so as to avoid repetitious aligning to the same computer system, and achieve full automatic aligning to the quality of the image displayed on the multi-sync display. Therefore, even if the multi-sync display is situated under different computer hosts or VGA display cards and placed where an user cannot touch, the inconvenience of pressing a button on the multi-sync display to align the quality of the image displayed on the multi-sync display in conventional techniques can be prevented.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 29, 2013
    Assignee: Tatung Company
    Inventor: Shih-Hua Tseng
  • Patent number: 8570314
    Abstract: An emissive type display device includes: a pixel array section having pixels ready for an active matrix driving system; a circuit for setting a peak luminance level of each display frame; and a driving circuit for variably controlling a total application period length of a driving voltage applied to a power supply line connected to each pixel and amplitude of the driving voltage so as to obtain a set peak luminance level, when the set peak luminance level is lower than a set value, the driving circuit dividing the driving voltage into a plurality of times of pulse waveform, and variably controlling the amplitude of the driving voltage at each output time according to the peak luminance level such that the amplitude of the driving voltage at least one output time is lower than a maximum driving voltage in a non-emission period.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: October 29, 2013
    Assignee: Sony Corporation
    Inventors: Hiroshi Hasegawa, Teppei Isobe
  • Patent number: 8570311
    Abstract: The general field of the invention is that of display devices including a liquid-crystal matrix screen composed of elementary pixels, said screen including at least a first electrode used as voltage reference and called the “backplane,” a second electrode in the form of a matrix electronic network delivering the drive voltages for controlling the pixels and control electronics for said electrodes, said screen being used in the so-called “normally black” mode, that is to say that in the absence of applied voltages, the optical transmission of the pixels is substantially zero. In the device according to the invention, the “backplane” drive voltage is a variable periodic voltage, the amplitude of variation of this voltage being sufficient so that in the absence of voltage on the second electrode, the optical transmission of the pixels is sufficient to be detected by an observer.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: October 29, 2013
    Assignee: Thales
    Inventors: Philippe Airault, Laurent Canal, Gérard Voisin
  • Publication number: 20130278589
    Abstract: A display control system includes a display unit, a timing control unit. The display unit includes at least one source driving unit and a gate driving unit. The source driving unit includes an output buffer unit, a plurality of switches and a register unit. The output buffer unit is used to output image signals or high impedance signals. The switches are used to receive the image signals or high impedance signals. The gate driving unit is used to output gate driving signals. The timing control unit is used for controlling the timing of the source driving unit and the gate driving unit.
    Type: Application
    Filed: April 1, 2013
    Publication date: October 24, 2013
    Inventor: Hung-Ta Liu
  • Patent number: 8565830
    Abstract: A mobile terminal and a method of displaying 3D images thereon are disclosed. A display module in a mobile terminal may include a touchscreen and a controller. The touchscreen may be configured to display a plurality of icons and to receive a touch input that sets a 3D display setting for at least one of the icons. The controller may be configured to set the 3D display setting according to a pattern of the touch input. The touch pattern may determine whether the displayed 3D image of the icon is perceived to project or recede into the touch screen and/or a magnitude of a projection or recession.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: October 22, 2013
    Assignee: LG Electronics Inc.
    Inventors: Seonhwi Cho, Baik Han
  • Patent number: 8558827
    Abstract: Provided are a data driving circuit, a display device, and a data driving method. The data driving circuit includes a clock generator configured to generate a clock signal from clock information included in a reception signal including the clock information, mode information and a body, a sampler configured to sample the reception signal according to the clock signal to obtain the mode information and the body that includes at least one of control information and data, a signal controller configured to determine whether or not the body corresponds to the control information with reference to the mode information, and generate a control signal corresponding to the control information according to a result of the determination, and a data driver configured to generate a data signal corresponding to the data according to the control signal.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: October 15, 2013
    Assignee: Anapass, Inc.
    Inventor: Yong Jae Lee
  • Patent number: 8558760
    Abstract: High efficiency drive circuitry for a group of parallel-connected light emitting devices, in which each device is driven in series by a respective source of bias current. The maximum voltage drop among the group of biased light emitting devices is determined and in response, a control voltage to drive all the light emitting device at the lowest effective voltage for the LED group is produced.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: October 15, 2013
    Assignee: Linear Technology Corporation
    Inventors: Mark Robert Vitunic, Steven Leo Martin
  • Publication number: 20130257847
    Abstract: A display device includes a display panel having pixels arranged at intersections of source lines and gate lines, a plurality of source drivers configured to dispersedly output image data signals to the source lines in response to source control signals and a data packet, a plurality of gate drivers configured to drive gate lines in response to gate control signals so as to be connected with pixels corresponding to the source lines, and a timing controller configured to output the data packet, the source control signals, and the gate control signals. At least one of the plurality of source drivers is configured to output carry information associated with an output of the image data signals, and at least another of the plurality of source drivers is configured to output the image data signals in response to the carry information.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Nyoung LEE, Hyunsang PARK, Seong-Young RYU
  • Patent number: 8542067
    Abstract: Disclosed is an oscillation circuit. The oscillation circuit supplies predetermined oscillation signals to a generating circuit having a divider, a phase comparator, and a generator. A clock signal generating section generates clock signals in a cycle based on the comparison results from the phase comparator. A clock signal mask section masks a part of the clock signals generated by the clock signal generating section to generate the predetermined oscillation signals and supplies the predetermined oscillation signals to the divider. The clock signal mask section masks a part of the clock signals such that the cycle of sampling signals generated by the generator is the same as a predetermined cycle which is the cycle of a clock for use in generating image signals.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: September 24, 2013
    Assignee: Fujitsu Ten Limited
    Inventors: Satoru Uehara, Keiji Furukawa
  • Patent number: 8525767
    Abstract: The present invention directs to a method for automatically compensating a common electrode voltage, comprising: calculating an average shift amount of a common electrode voltage according to gray scale data in a line on a displayed image, processing the average shift amount of the common electrode voltage to be a digital signal then converting it into an analog signal then into an average shift amount voltage waveform, and superposing it with a common electrode voltage waveform to form a new output signal waveform for driving the common electrode; the present invention also directs to a device for automatically compensating a common electrode voltage, comprising a data input module, a looking up module, a data operation module, a data encoding and converting module, a waveform generator and an operational amplification module.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: September 3, 2013
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Xinshe Yin
  • Patent number: 8527678
    Abstract: The present invention provides an intelligent, modular multimedia computer management system for coupling a series of remote computers to one or more user workstations to allow each user workstation to selectively access and control one or more remote computers. The computer management system incorporates a centralized switching system that receives keyboard, cursor control device, audio, and auxiliary peripheral device signals from the user workstation and transmits and applies the signals to the remote computer in the same manner as if the keyboard, cursor control device, audio input source, or auxiliary peripheral device of the user workstation were directly coupled to the remote computer. Also, the user workstation receives audio signals and auxiliary peripheral device signals from the remote computer. In addition, the multimedia computer management system transmits video signals from the remote computer over an extended range for display on the video monitor of the user workstation.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: September 3, 2013
    Assignee: RIIP, Inc.
    Inventors: Yee Liaw, Lech Glinski
  • Publication number: 20130222360
    Abstract: A synchronous and asymmetrical display system and a method of operating the same are disclosed herein, where the synchronous and asymmetrical display system includes a single power module, a set of synchronous transmission lines, and display modules connected in series through the set of synchronous transmission lines, in which each display module includes a receive unit. This method includes the steps as follows. The first step is to command each display module to search a signal command from its receive unit and the set of synchronous transmission lines. Then, when one of the display modules acquire the power switch signal, the power switch signal is transmitted to the other display modules through the set of synchronous transmission lines, and one of the display modules generates a power control signal to control the power module.
    Type: Application
    Filed: September 14, 2012
    Publication date: August 29, 2013
    Inventors: Chih-Ping Tsai, Ming-Jen Tsai
  • Patent number: 8520671
    Abstract: A system and method transmits graphic data received at varying frequencies at a fixed data rate. The frequency dependent data and associated data clock signal are received and the frequency dependent data is converted to frequency independent data. A ratio of a number of data clock cycles to a number of reference clock cycles is determined and transmitted. The frequency independent data and header data are transmitted, at a fixed rate, to a receiver, the fixed rate being a frequency greater than the frequency of the associated data clock signal. The received the frequency independent data is converted to frequency dependent data based upon the received determined ratio. The communication channel may include an optical fiber and a tension member wherein control data is transmitted along the tension member and graphic data is transmitted along the optical fiber.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 27, 2013
    Assignee: Analog Devices, Inc.
    Inventors: Rod Miller, Tyre Paul Lanier
  • Patent number: 8519995
    Abstract: According to various embodiments of the invention, gamma curves for multiple pixel groups can be calibrated using look-up tables or by using reference voltage groups provided by gamma voltage generators so that the pixels can display multiple images with correct gray levels at different view angles. Therefore, color shift can be avoided or lessened without necessarily using extra circuitry on the display panel. Also, any related light transmittance or light utilization efficiency reduction may be decreased or eliminated.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: August 27, 2013
    Assignee: Chimei Innolux Corporation
    Inventor: Ming-Feng Hsieh
  • Patent number: 8514212
    Abstract: A drive circuit of a displayer for driving at least a pixel, including: an output stage coupled to the pixel and controlled by a pixel signal to switch an output voltage on the pixel; a calibration device coupled between the output stage and the pixel and including an input end controlled by a bias voltage further calibrating the brightness of the pixel; a stabilizing device coupled between the input end of the calibration device and the pixel signal for stabilizing the voltage on the input end of the calibration device to be at the level of the bias voltage after a variation; and a accelerating device coupled between the stabilizing device and a voltage source for generating the bias voltage and accelerating the speed stabilizing the voltage on the input end of the calibration device to be at the level of the bias voltage.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: August 20, 2013
    Assignee: Princeton Technology Corporation
    Inventor: Yen-Ynn Chou
  • Patent number: 8514217
    Abstract: An apparatus for driving a light scanner and method thereof are disclosed. The present invention includes an apparatus for driving a light scanner, which scans an image on a screen, the apparatus comprising the light scanner driven by a drive signal, a sensing unit sensing a driving of the light scanner, a pixel clock signal generating unit generating a pixel clock signal by detecting a 90-degree phase difference between the drive signal and a sensing signal sensed by the sensing unit, a sync signal adjusting unit adjusting vertical and horizontal sync signals of an input video according to the pixel clock signal and a driving unit driving the light scanner according to the adjusted horizontal and vertical sync signals.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: August 20, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jung Hoon Seo, Jae Sung Kim, Jae Wook Kwon
  • Patent number: 8514205
    Abstract: A drive circuit includes a generator and a driver. The generator generates a signal having a period and a varying amplitude during a driving portion of the period, and the driver is coupled to the generator and drives a plate of an electrostatically drivable plant with the signal. The drive circuit may be used to drive a mirror plate of a comb-drive MEMS mirror.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: August 20, 2013
    Assignee: Microvision, Inc.
    Inventors: Wyatt O. Davis, Gregory T. Gibson, Thomas W. Montague, Robert J. Dunki-Jacobs, Michael P. Weir
  • Patent number: 8514207
    Abstract: Image processing and corresponding apparatus, methods and systems. The image processing includes controlling n number of data-line driver circuits included in a display apparatus, the data-line driver circuit driving n number of subpixels. Such controlling causes to display a moving picture image such that frame information of the moving picture image with first frame rate is displayed at a second frame rate, which is 1/n of the first frame rate, and the n number of subpixels included in each pixel are sequentially driven with a time shift, the time shift being 1/n of display period of single frame with the second frame rate.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 20, 2013
    Assignee: Sony Corporation
    Inventor: Yoshihiko Kuroki
  • Patent number: 8514215
    Abstract: Dynamically managing power consumption of a computer, the computer including two or more graphics adapters, the computer having a number of graphics adapter configurations including one or more of the graphics adapters, where managing power consumption includes: monitoring, by a graphics driver, operation of a current graphics adapter configuration, the operation characterized by a graphics processing load; determining, in dependence upon the graphics processing load, whether operation of the current graphics adapter configuration conforms to predefined graphics processing criteria; if operation conforms, processing graphics, by the graphics adapter, for display with the one or more graphics adapters of the current graphics adapter configuration; and if operation does not conform, processing graphics, by the graphics adapter, for display with the one or more graphics adapters of another graphics adapter configuration.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: August 20, 2013
    Assignee: International Business Machines Corporation
    Inventors: Moises Cases, Bhyrav M. Mutnury, William G. Pagan
  • Patent number: 8508454
    Abstract: An LCD device adapted to cut costs through the simplification of circuitry is disclosed. The LCD device includes a timing controller that includes: an inter-integrated circuit driver and a memory which are configured to communicate with an external system using an inter-integrated circuit protocol; and a logic element configured to operate a first logic signal from a first write protection terminal of the external system with a second logic signal from a second write protection terminal of the inter-integrated circuit driver, and to apply the operated logic signal to the memory. The memory replies to the operated logic signal from an output terminal of the logic element and performs a write operation.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: August 13, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Kuk Hui Chang, Young Nam Lee, Hyoung Sik Kim
  • Patent number: 8508526
    Abstract: A stereo display including a display panel unit, a shutter glasses unit, and a backlight unit is provided. The display panel unit sequentially displays a right eye image and a left eye image according to a right eye synchronizing vertical signal and a left eye synchronizing vertical signal. The shutter glasses unit has a right eye glass and a left eye glass, wherein the right eye glass is synchronously opened according to the right eye synchronizing vertical signal, and the left eye glass is synchronously opened according to the left eye synchronizing vertical signal. The backlight unit provides a light source to the display panel unit, wherein the backlight unit is synchronously turned on and off according to the right eye synchronizing vertical signal, and the backlight unit is also synchronously turned on and off according to the left eye synchronizing vertical signal.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 13, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Jian-Chiun Liou, Kuen Lee, Jui-Feng Huang
  • Patent number: 8508463
    Abstract: The present invention discloses a backlight control circuit, comprising: a voltage supply circuit, under control by a control signal, for receiving an input voltage and generating an output voltage; a plurality of nodes for respectively indicating the current status of corresponding light emission device paths; and a high-low voltage comparison and amplifier circuit for generating the control signal according to a voltage difference between at least two nodes.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 13, 2013
    Assignee: Richtek Technology Corporation
    Inventor: Jing-Meng Liu
  • Patent number: 8508521
    Abstract: Disclosed are a method of driving a display panel and a display apparatus using the same, in which a driving voltage is applied to a transistor provided in each pixel of the display to drive the transistor. A voltage level of the driving voltage applied to the transistor is adjusted every predetermined period and the changed driving voltage is applied to the transistor to prevent the operational reliability of the transistor from being lowered by a shift in the threshold voltage of the transistor.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Moo Huh, Je-Hun Lee
  • Patent number: 8508522
    Abstract: Methods for producing a remote current for driving a load, include one of sourcing and sinking a local current, Iref, through a distributed impedance line, at a first node thereof; the other of sourcing and sinking a remote current, Iref, through the distributed impedance line in response to the local current Iref; determining a rate change of voltage of the first node; and sourcing or sinking additional current, into or out of the first node, in response to the rate of change of voltage of the first node in order to settle the voltage on the distributed impedance line, and apparatus for providing such are disclosed.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: August 13, 2013
    Assignee: Rochester Institute of Technology
    Inventors: Robert J. Bowman, Chris J. Nassar
  • Publication number: 20130201174
    Abstract: A display apparatus including a plurality of pixels arranged in association with a plurality of gate lines and a plurality of data lines crossing the gate lines, a data driver configured to drive the data lines, a gate driving unit configured to drive the gate lines in synchronization with a gate control signal, and a timing controller configured to control the data driver and the gate driving unit in response to an image signal and a control signal from an exterior. The timing controller outputs the gate control signal including a plurality of pulses respectively corresponding to the gate lines and an enable time of each pulse of the gate control signal is set according to a position of a corresponding gate line of the gate lines.
    Type: Application
    Filed: November 27, 2012
    Publication date: August 8, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Samsung Display Co., Ltd.