Patents Examined by Dinh Le
  • Patent number: 9666924
    Abstract: A radiofrequency filter exhibiting at least one resonant mode comprises: at least one cavity at least partially closed using conductive walls, having a cylindrical outer surface defined by a directing curve described by a generatrix and having a point of symmetry, an axis passing through a point of symmetry and parallel to the generatrix being a longitudinal axis of the cavity. At least one dielectric element is arranged in the cavity and comprises: a first portion having a thickness according to the longitudinal axis and a section according to a plane perpendicular to the longitudinal axis whose vertices are distributed according to a polygon, at least two vertices being short-circuited between them by the conductive walls of the cavity, via an electrical or radiofrequency contact between the vertices and walls, at least one pyramidal portion comprising an apex and a base coinciding with an extreme section of the first portion.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: May 30, 2017
    Assignee: THALES
    Inventors: Damien Pacaud, Nicolas Jolly
  • Patent number: 9472137
    Abstract: An organic light emitting display device includes a substrate including a display area on which a plurality of pixels are formed and a non-display area surrounding the display area; a first power line positioned on a lower non-display area; an auxiliary power line positioned on an upper non-display area; a first power supply supplying a first voltage to the first power line; and an auxiliary power supply supplying an auxiliary voltage to the auxiliary power line. Accordingly, it is possible to provide an organic light emitting display device capable of equalizing luminance by minimizing a variation in power supplied to each pixel.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 18, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jeong-Keun Ahn
  • Patent number: 9425760
    Abstract: A composite electronic component may include: an input terminal receiving power which has been converted by a power management unit; a power smoothing unit including a capacitor including a ceramic body in which a plurality of dielectric layers and internal electrodes are stacked such that the internal electrodes are disposed to face each other with the dielectric layer interposed therebetween and an inductor including a magnetic body including a coil part and a magnet, and smoothing power; and an output terminal supplying the smoothed power. The inductor may suppress an alternating current (AC) component of supplied power and the capacitor may reduce ripples in the supplied power.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: August 23, 2016
    Inventor: Jae Hoon Lee
  • Patent number: 9362900
    Abstract: A switching unit serves for the arithmetic linking of at least two input signals supplied to the switching unit. For this purpose, the switching unit provides a switching matrix to which the at least two input signals are supplied. The switching matrix applies at least one summation operation to at least two input signals and/or at least one multiplication operation to at least one input signal. Additionally or alternatively, the switching matrix can also connect at least one input signal directly through to a first output. The switching matrix comprises for this purpose several current switches.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: June 7, 2016
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Alexander Schild, Alexander Kunze
  • Patent number: 9345122
    Abstract: An RF generator and a method of controlling same includes an RF source; a DC source; and an RF amplifier comprising an RF input, a DC input, and an RF output, the RF amplifier configured to receive an RF signal at the RF input, receive a DC voltage at the DC input, and provide an output power at the RF output; a control unit operably coupled to the DC source and RF source, the control unit configured to receive a power setpoint for the RF output, determine a power dissipation at the RF generator, alter the DC voltage, and repeat the alteration of the DC voltage until determining a final DC voltage that decreases the power dissipation at the RF generator while enabling the output power at the RF output to be equal to or greater than the power setpoint.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 17, 2016
    Inventor: Imran Ahmed Bhutta
  • Patent number: 9344073
    Abstract: A semiconductor device includes: a power supply; a circuit block that has at least one storage element and operates by receiving a power supply voltage from the power supply; a power management unit that controls the power supply to change the power supply voltage; and a storage element monitor circuit that generates a first malfunction signal at a first margin voltage that is higher than a voltage at which the storage element does not normally operate in a case where the power supply voltage lowers, wherein the power management unit controls the power supply so that the power supply voltage does not become lower than the first margin voltage.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: May 17, 2016
    Inventors: Satoshi Tanabe, Kenichi Kawasaki
  • Patent number: 9325302
    Abstract: In several embodiments of the invention, a programmable architecture for FIR filters includes a tapped delay chain and a number of different slices. Each slice has a multiplexer that receives all of the tapped input-signal samples and a programmable current driver. Each slice can be independently programmed to correspond to any one of the taps in the delay chain, such that zero, one, or more slices can be associated with any of the delay-chain taps. Moreover, the current driver in each slice can be independently programmed to contribute any available driver strength level for the selected tap, where the combination of one or more drive strengths associated with a given tap corresponds to the effective tap coefficient for that tap. In this way, the architecture can be programmed to provide a variety of different filters having not just transfer functions with different coefficient values, but also transfer functions having different numbers of pre-cursor and/or post-cursor taps.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: April 26, 2016
    Inventors: Vinh Ho, Magathi Jayaram, David Wei
  • Patent number: 9326343
    Abstract: An integrated LED controller drives and reads a passive dimmer and controls a power circuit for the LED. The integrated LED controller detects changes in the position of the passive dimmer and causes the power circuit to brighten or dim the LED accordingly. These functions are normally performed by multiple discrete components. However, the integrated LED controller is implemented as a single integrated circuit, thus reducing the size and cost of the LED dimming system. The integrated LED controller can also include a unified timing controller that coordinates the timing of multiple functions within the controller in a manner that reduces the noise sensitivity of the controller.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: April 26, 2016
    Assignee: Dialog Semiconductor Inc.
    Inventors: Liang Yan, Clarita C. Poon, Yimin Chen, Mark Eason, Chuanyang Wang
  • Patent number: 9306259
    Abstract: A horn antenna is formed within a multilayer substrate and has a generally trapezoidal shaped top plate and bottom plate formed in different layers of the multilayer substrate. A set of densely spaced vias form two sidewalls of the horn antenna by coupling adjacent edges of the top plate and the bottom plate. The horn antenna has a narrow input end and a wider flare end. A microstrip line is coupled to the top plate and a ground plane element is coupled to the bottom plate at the input end of the horn antenna.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: April 5, 2016
    Inventors: Juan Alejandro Herbsommer, Hassan Ali
  • Patent number: 9306535
    Abstract: A duplexer includes a transmit filter and an integrated receive filter configured to filter a receive signal from an antenna. The integrated receive filter includes a receive filter portion having multiple acoustic resonator filter elements and a matched balun configured to convert a single-ended input signal, received at a single-ended input of the matched balun from a single-ended output of the receive filter portion, to a differential output signal. The matched balun being is located in place of a phase matching inductor of the receive filter portion, eliminating need for the phase matching inductor of the receive filter portion and a phase matching inductor of the matched balun. Impedance at the single-ended input of the matched balun includes a complex conjugate of impedance at the single-ended output of the receive filter portion.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: April 5, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Paul Bradley, Shen Ye, Jeesu Kim
  • Patent number: 9300273
    Abstract: The present invention relates to an active band stop filter comprising a filter input and a filter output which are linked by a transmission line LT, a resonator RE coupled to the transmission line and connectable to a load impedance. Between the resonator and the load impedance there is mounted a means of activation of the filtering function in a chosen operating band. The filter is useable in multistandard terminals.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 29, 2016
    Assignee: Thomson Licensing
    Inventors: Raafat Lababidi, Julien Lintignat, Dominique Lo Hine Tong, All Louzir, Bruno Barelaud, Bernard Jarry
  • Patent number: 9298952
    Abstract: A CMOS logarithmic current generator includes current mode circuitry having a design principle based on a Taylor's series expansion that approximates an exponential function. A MOSFET circuit provides a function generator core cell having a biasing current Ib. The FETs of the circuit are matched and are biased in the weak inversion region. Additional transistors are used to convert a pair of input currents to a pair of voltages to provide an output current based upon a current mode logarithmic function. The biasing current Ib can be varied to provide a variable gain in the circuit.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: March 29, 2016
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Munir A. Al-Absi, Karama M. Al-Tamimi
  • Patent number: 9293798
    Abstract: Some embodiments include a first differential signal pair and a second differential signal pair. The first and second differential signal pairs are arranged relative to each other in a manner to intentionally reduce or cancel crosstalk introduced by a pinout (for example, a section of a pinout, a socket, a connector, etc.) into at least one of the first differential signal pair and the second differential signal pair. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: March 22, 2016
    Assignee: Intel Corporation
    Inventor: Xiaoning Ye
  • Patent number: 9295125
    Abstract: Method for communication between an electronic module and a sensor having a first branch, including a light source LED and a first switch, and a second branch including a second switch, supplied by a supply line, the module measuring modulations of intensity of current of the line. When the light source is turned on or in the process of turning on/turning off, the sensor causes i) modulation of the intensity of the current in the LED between a high state and a low state, ii) modulation of the intensity of the current in the second branch so that the intensity of the current is always in a higher state, and, in case of detection, iii) dispatches to the electronic module a modulation of the intensity of current in the second branch, when the intensity of current in the LED is in the low state.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: March 22, 2016
    Inventors: Maxime Cordier, Xavier Hourne, Olivier Elie
  • Patent number: 9287603
    Abstract: Provided is an electronic device including a high-frequency signal waveguide configured to transmit a high-frequency signal in a housing. An addition unit to which a communication device is able to be added is provided in the high-frequency signal waveguide. When a second module having a communication function is added to the addition unit and coupled to the high-frequency signal waveguide, data transmission is possible between the first module and the second module via the high-frequency signal waveguide.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 15, 2016
    Inventors: Kenji Komori, Takahiro Takeda, Sho Ohashi
  • Patent number: 9287875
    Abstract: Circuits and methods for controlling electrical coupling by a load switch are disclosed. In an embodiment, the load switch includes a pass element, level-shift circuit and low-resistance active path. The pass element is configured to be coupled to a power supply and a load, and is configured to electrically couple the power supply with the load during ON-state and electrically decouple the power supply from the load during OFF-state. The level-shift circuit includes a first transistor and pull-up resistor and is configured to generate a level-shifted signal in response to an enable signal, and enable the ON-state and the OFF-state of the pass element based on first and second voltages of the level-shifted signal. The low-resistance active path is coupled in parallel with the pull-up resistor for shunting the pull-up resistor in the OFF-state by providing a path for a leakage current of the first transistor in the OFF-state.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: March 15, 2016
    Inventors: Alok Kumar, Fenish Padinjaroot Prakasan, Rajkumar Jayaraman, Kalyan Cherukuri, Praveen Krishnamurthy
  • Patent number: 9281802
    Abstract: In accordance with an embodiment, a switchable capacitance circuit includes a plurality of capacitance-switch cells that each has a first semiconductor switching circuit and a capacitance circuit having a first terminal coupled to the first semiconductor switching circuit. A resistance of the first semiconductor switching circuit of a first switch-capacitance cell of the plurality of capacitance-switch cells is within a first tolerance of a resistance of the first semiconductor switching circuit of a second capacitance-switch cell of the plurality of capacitance-switch cells, and a capacitance of the capacitance circuit of the first capacitance-switch cell is within a second tolerance of a capacitance of the capacitance circuit of the second capacitance-switch cell.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: March 8, 2016
    Assignee: Infineon Technologies AG
    Inventor: Winfried Bakalski
  • Patent number: 9281968
    Abstract: A differential circuit system is provided. The differential circuit system includes: a different circuit set including a plurality of differential circuits, a voltage regulator, and a current drainage circuit set. The differential circuits are electrically connected between a first node and a second node, and each differential circuit generates a current flowing from the first node to the second node. A high voltage is provided to the first node and a low voltage is provided to the second node. The first node receives an external voltage. According to the first voltage, the voltage regulator generates the low voltage. The low voltage is provided to the second node. The current drainage circuit set generates a drainage current in between the second node and a ground voltage. A superposed current flowing to the voltage regulator is difference of the summation of currents minus the conducting current.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: March 8, 2016
    Inventors: Fan-Yi Jien, Wen-Tai Wang, Sheng-Tsai Huang, Yen-Cheng Chen
  • Patent number: 9270275
    Abstract: A level shifter includes a level shifting unit suitable for changing a swing voltage level of an input signal from a first swing voltage level to a second swing voltage level based on a clock signal, a precharging unit suitable for precharging an output node of the level shifting unit based on the clock signal, and an output unit suitable for latching a signal of the output node having the second swing voltage level to output as an output signal.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: February 23, 2016
    Assignee: SK Hynix Inc.
    Inventor: Taek-Sang Song
  • Patent number: 9270006
    Abstract: An electronic device includes a central control unit and a waveguide device. The waveguide device includes a communication module having a communication function, and an attachment/detachment unit capable of attaching/detaching a high-frequency signal waveguide so that coupling between the module and the high-frequency signal is possible. The communication module includes a communication device, and a transfer structure configured to cause a high-frequency signal emitted from the communication device to be coupled to the high-frequency signal waveguide.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 23, 2016
    Inventors: Sho Ohashi, Kenji Komori, Takahiro Takeda