Patents Examined by Terry L. Englund
  • Patent number: 8760220
    Abstract: A beta enhancement circuit includes a current source connected in series with a transistor between two voltage supply lines. In an embodiment, the voltage supply lines are configured for connection to a power source and ground potential. A resistor device is connected between a control terminal of the transistor device and one of voltage supply lines. A value for the resistor device is selected based on one or more process dependent parameters of the transistor.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 24, 2014
    Assignee: Marvell International Ltd.
    Inventors: Hao Zhou, Bingkun Yao, Tao Shui, Yonghua Song
  • Patent number: 8742838
    Abstract: The interposer 30 is disposed on an upper surface of the stacked structure 24 formed by stacking a plurality of a DRAM chip 20 and a plurality of a flash memory chip 22. Thus down-size of an entire device is accomplished. A boost converter having an inductor is used as a voltage boost circuit 40. Thus down-size of the entire device is accomplished.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: June 3, 2014
    Assignee: The University of Tokyo
    Inventors: Ken Takeuchi, Tadashi Yasufuku, Koichi Ishida, Makoto Takamiya, Takayasu Sakurai
  • Patent number: 8742813
    Abstract: An inverter and an antenna circuit. The inverter that receives control signals including a first control signal, a second control signal, and a third control signal, inverts the first control signal, and outputs the inverted first control signal, includes: a first MOS transistor having a gate to which the first control signal is applied and a source that is grounded; a second MOS transistor having a gate to which the third control signal is applied and a source to which the second control signal is applied; and a third MOS transistor having a gate to which the second control signal is applied and a source to which the third control signal is applied, wherein drains of the first MOS transistor, the second MOS transistor, and the third MOS transistor are connected to an output terminal.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: June 3, 2014
    Assignees: Samsung Electro-Mechanics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Yu Sin Kim, Sang Hee Kim, Dong Hyun Baek, Sun Woo Yun, Sung Hwan Park
  • Patent number: 8742814
    Abstract: Method, modules and a system formed by connecting the modules for controlling payloads. An activation signal is propagated in the system from one module to the modules connected to it. Upon receiving an activation signal, the module (after a pre-set or random delay) activates a payload associated with it, and transmits the activation signal (after another pre-set or random delay) to one or more modules connected to it. The system is initiated by a master module including a user activated switch producing the activation signal. The activation signal can be propagated in the system in one direction from the master to the last module, or carried bi-directionally allowing two way propagation, using a module which revert the direction of the activation signal propagation direction. A module may be individually powered by an internal power source such as a battery, or connected to an external power source such as AC power.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: June 3, 2014
    Inventor: Yehuda Binder
  • Patent number: 8736352
    Abstract: An internal voltage generation circuit includes a pumping voltage generation unit configured to generate a pumping voltage when a first internal voltage has a lower level than a first reference voltage or a second internal voltage has a lower level than a second reference voltage, and a select transmission unit configured to selectively transmit the pumping voltage as the first internal voltage or the second internal voltage.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 27, 2014
    Assignee: SK Hynix Inc.
    Inventor: Jae Hoon Kim
  • Patent number: 8723591
    Abstract: A method for driving an IGBT, wherein a transient voltage applied across the IGBT is reduced by altering a rate of change of a gate-emitter voltage of the IGBT.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 13, 2014
    Assignee: LSIS Co., Ltd.
    Inventors: Gyeong Ho Lee, Hae Yong Park, Seung Hyun Bang, Jung Wook Sim, Won Joon Choe, Min Jee Kim
  • Patent number: 8717071
    Abstract: A capacitive load drive circuit may comprise a high current drive amplifier configured to be coupled to a capacitive load during a high current ramp up of the voltage across the capacitive load to a cut off voltage; a low current drive amplifier configured to be connected to the capacitive load during a low current ramp up of the voltage across the capacitive load, from the cut off voltage to a maximum voltage across the capacitive load; and the high current drive amplifier configured to be connected to the capacitive load during a high current ramp down of the voltage across the capacitive load. The low current drive amplifier may be connected to the capacitive load during a period of steady state of the voltage across the capacitive load, intermediate the low current ramp up and the high current ramp down.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: May 6, 2014
    Assignee: Cirrus Logic, Inc.
    Inventors: Anindya Bhattacharya, John Melanson
  • Patent number: 8710918
    Abstract: An electronic component includes a driver that outputs a signal to a reception apparatus; a storage device storing therein reflection information related to a reflected wave that returns to the driver when the signal is reflected back by the reception apparatus; a reflected wave detector that based on the reflection information, determines a measurement period for measuring the reflected wave and that based on the measurement period, measures an arrival time and a peak amplitude of the reflected wave; and a controller that based on the arrival time and the peak amplitude, extracts reflected-wave cancelling information for inhibiting effects of the reflected wave from the reception apparatus and that sets the extracted reflected-wave cancelling information in the driver.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Takeshi Uemura, Masaki Tosaka, Hitoshi Yokemura
  • Patent number: 8704588
    Abstract: A bandgap voltage reference circuit for generating a bandgap voltage reference. An embodiment comprises a current generator controlled by a first driving voltage for generating a first current depending on the driving voltage, and a first reference circuit element coupled to the controlled current generator for receiving the first current and generating a first reference voltage in response to the first current. The circuit further comprises a second reference circuit element for receiving a second current corresponding to the first current; said second reference circuit element is adapted to generate a second reference voltage in response to the second current. The circuit further comprises an operational amplifier having a first input coupled to the first circuit element and a second input coupled to the second reference circuit element. The circuit also comprises a control circuit comprising first capacitive element and second capacitive element.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: April 22, 2014
    Assignee: STMicroelectronics S.r.l.
    Inventors: Antonino Conte, Mario Micciche, Rosario Roberto Grasso, Maria Giaquinta
  • Patent number: 8704563
    Abstract: In one implementation an output signal of an oscillator is varied to be within a desired frequency band with respect to a reference signal, the output signal having a plurality of phases. The implementation may include comparing the output signal with the reference signal, counting falling edges about each phase of the number of phases in a predetermined time period and summing to define a count output; comparing the count output with a product of the number of phases of the output signal and the factor to define a comparison, generating a control signal based upon the comparison, and inputting the control signal to the oscillator to alter the output signal thereof.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: April 22, 2014
    Assignee: Infineon Technologies AG
    Inventors: Chin Yeong Koh, Kar Ming Yong
  • Patent number: 8704587
    Abstract: A configurable multistage charge pump including multiple pumpcells, at least one bypass switch and control logic. The pumpcells are coupled together in series including a first pumpcell receiving an input voltage and at least one remaining pumpcell including a last pumpcell which generates an output voltage. Each bypass switch is coupled to selectively provide the input voltage to a pumpcell input of a corresponding one of the remaining pumpcells. The control logic is configured to determine one of multiple voltage ranges of the input voltage, to enable each pumpcell for a first voltage range and to disable and bypass at least one pumpcell for at least one other voltage range. A method of operating a multistage charge pump including detecting an input voltage, selecting a voltage range based on an input voltage, and enabling a number of cascaded pumpcells corresponding to the selected voltage range.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: April 22, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Karthik Ramanan, Jeffrey C. Cunningham, Ronald J. Syzdek
  • Patent number: 8698554
    Abstract: An apparatus comprising an input circuit, a cross coupled active circuit and an output circuit. The input circuit may be configured to generate a first portion of an intermediate signal in response to an input signal. The cross coupled active circuit may be configured to generate a second portion of the intermediate signal in response to a feedback of an output signal. The output circuit may be configured to generate the output signal in response to the intermediate signal. The output signal may pass frequencies above a target frequency.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: April 15, 2014
    Assignee: LSI Corporation
    Inventor: Andrew P. Krebs
  • Patent number: 8692607
    Abstract: Sharp fluctuations of an internal voltage when an internal voltage generating circuit is activated or inactivated are prevented. The internal voltage generating circuit to supply the internal voltage generated from an external voltage to an internal power supply line, a control circuit to control an operation of the internal voltage generating circuit, and a voltage detection circuit to detect a level of a first voltage are included. When, for example, the internal voltage generating circuit is activated, the control circuit stepwise increases supply ability of the internal voltage at a first speed and when the internal voltage generating circuit is inactivated, the control circuit stepwise reduces the supply ability of the internal voltage at a second speed that is different from the first speed. Accordingly, wild fluctuations of the internal voltage when the internal voltage generating circuit is activated/inactivated can optimally be prevented for each case.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: April 8, 2014
    Inventor: Kenji Yoshida
  • Patent number: 8692606
    Abstract: A method and system avoid ringing at an external power transistor subsequent to switching OFF the external power transistor. A driver circuit generates a drive signal for switching the external power transistor between OFF-state and ON-state. The driver circuit comprises a drive signal generation unit configured to generate a high drive signal triggering the external power transistor to switch to ON-state, wherein an output resistance of the driver circuit is adjustable, an oscillation detection unit to detect a degree of oscillation on the drive signal, and a resistance control unit to adjust the output resistance of the driver circuit based on the degree of oscillation on the drive signal.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: April 8, 2014
    Assignee: Dialog Semiconductor GmbH
    Inventor: Horst Knoedgen
  • Patent number: 8680893
    Abstract: A connection device for connecting a load to a power supply, comprising at least first and second current control devices arranged in parallel between the power supply and the load, and a controller arranged to switch the current control devices on in sequence for temporally overlapping on periods.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 25, 2014
    Assignee: Analog Devices, Inc.
    Inventors: George Redfield Spalding, Jr., Marcus O'Sullivan
  • Patent number: 8674755
    Abstract: A differential amplifier comprising a first upper device and a first lower device series coupled between two power supplies and a second upper device and a second lower device series coupled between the two power supplies. A first DC voltage enables the first upper device and the second upper device and a second DC voltage regulates current flow in the first lower device and the second lower device. An AC signal component is coupled to the first upper device and the second lower device while the AC signal complement is coupled to the first lower device and the second upper device. Separate RC networks couple the AC signals to their respective device. A first and second output signal forms between the upper device and the lower device, respectively. All the devices are same channel type.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: March 18, 2014
    Assignee: Tensorcom, Inc.
    Inventor: Zaw Soe
  • Patent number: 8665007
    Abstract: A clamp circuit for an RFID tag includes a power supply node, a dynamic clamp coupled between the power supply node and ground, and an active clamp coupled between the power supply and ground, having a shunt combined effect for providing a clamped power supply node VDDR voltage. The dynamic clamp includes a capacitor divider circuit, a resistor coupled to the capacitor divider circuit, and an N-channel transistor coupled to the capacitor divider circuit. The active clamp includes a differential amplifier having a first input coupled to a resistor divider, a second input for receiving a reference voltage, and an output coupled to a P-channel transistor for the clamped VDDR voltage.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: March 4, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: Agustin Ochoa, Howard Tang
  • Patent number: 8648647
    Abstract: A semiconductor includes: a first field-effect transistor (FET); and a second FET of similar polarity to the first FET, wherein a body of the first FET is electrically coupled to a body of the second FET, and a source of the first FET is electrically coupled to a source of the second FET, such that a body voltage of the second FET controls a body voltage of the first FET.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: February 11, 2014
    Assignee: International Business Machines Corporation
    Inventors: Myung-Hee Na, Edward J. Nowak
  • Patent number: 8624632
    Abstract: Sense amplifier-type latch circuits are provided which employ static bias currents for enhancing operating frequency. For example, a sense amplifier-type latch circuit includes a latch circuit that captures and stores data during an evaluation phase of the sense amplifier-type latch circuit, and outputs the stored data to differential output nodes. An input differential transistor pair has drains connected to the latch circuit and sources commonly connected to a coupled source node. A static bias current circuit is connected to the coupled source node to provide a static bias current which flows through the differential transistor pair and cross-coupled inverters of the latch during a precharge phase. A switch device, which is connected to the coupled source node, is turned off during the precharge phase and turned on during the evaluation phase by operation of a clock signal to increase current flow through the differential transistor pair.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: January 7, 2014
    Assignee: International Business Machines Corporation
    Inventor: John F. Bulzacchelli
  • Patent number: 8614599
    Abstract: One embodiment of an integrated circuit includes a local circuit block, a first power supply for supplying power to a first terminal of the local circuit block, a second power supply for supplying power to a second terminal of the local circuit block, a first transmission gate coupled between the second terminal of the local circuit block and a current path from the second power supply, and a second transmission gate coupled between the current path from the second power supply and a gate of a p-type metal-oxide-semiconductor (PMOS) transistor in the first transmission gate, the second transmission gate including a single transistor.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: December 24, 2013
    Assignee: Xilinx, Inc.
    Inventors: Adebabay M. Bekele, Aman Sewani, Xuewen Jiang