Patents Examined by Christopher Lo
  • Patent number: 9360038
    Abstract: Disclosed herein is a mounting mechanism such as a drift tube mounting mechanism for mounting a drift tube provided in a drift tube accelerator vessel 10 via an elongate holding element 14. The mounting mechanism comprises a biasing mechanism comprising one or more disc spring members 46 for axially biasing the elongate holding element 14 with respect to the vessel towards a mounting position. The mounting mechanism further comprises a screw 58 having a head portion 60 and a shaft portion, said shaft portion comprising a threaded portion 64 for screwing into the elongate holding element 14. The mounting mechanism further comprises a bushing 66 comprising a sleeve portion 68 receiving at least a part of the screw shaft and separating the one or more disc spring members 46 from said screw shaft portion. The screw head portion 60 is configured to receive the axial biasing force generated by the one or more disc spring members 46.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: June 7, 2016
    Assignee: CERN—European Organization for Nuclear Research
    Inventors: Suitbert Ramberger, Pierre Bourquin, Yves Cuvet, Maurizio Vretenar
  • Patent number: 9338036
    Abstract: One embodiment of the present invention sets forth a mechanism for transmitting and receiving differential signals. A transmitter combines a direct current (DC) to DC converter including a capacitor with a 2:1 multiplexer to drive a pair of differential signaling lines. The transmitter drives a pair of voltages that are symmetric about the ground power supply level. Signaling currents are returned to the ground plane to minimize the generation of noise that is a source of crosstalk between different differential signaling pairs. Noise introduced through the power supply is correlated with the switching rate of the data and may be reduced using an equalizer circuit.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 10, 2016
    Assignee: NVIDIA Corporation
    Inventors: John W. Poulton, Thomas Hastings Greer, III, William J. Dally
  • Patent number: 9282924
    Abstract: Embodiments of the present disclosure relate to techniques for controlling the temperature of light sources within physiological sensors in order to regulate the wavelengths emitted by the light sources. The sensors may include a temperature control element that is designed to provide heating and/or cooling to the light sources. The sensors also may include a temperature sensor designed to detect the temperature of the light sources. Based on the detected temperature, a controller can vary the amount of heating and/or cooling provided by the temperature control element to maintain the temperature of the light sources at a desired temperature or within a desired temperature range.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 15, 2016
    Assignee: Covidien LP
    Inventors: Andy S. Lin, Youzhi Li, Bo Chen, Daniel Lisogurski, Friso Schlottau
  • Patent number: 9263914
    Abstract: For signal luminaires which indicate the term STOP or DANGER upon activation, a circuit containing a first operating case feed unit and a second auxiliary source is provided for the purpose of supplying a reliable power supply. In this case, the second auxiliary source is inductively coupled to the signal luminaire electric circuit; while the signal luminaires are capacitively coupled to ground. The use of switches during operation in a fall-back level is obviated in this way.
    Type: Grant
    Filed: May 21, 2011
    Date of Patent: February 16, 2016
    Inventors: Bernhard Diethelm, Rolf Schmid
  • Patent number: 9246715
    Abstract: A pre-emphasis circuitry that includes (1) a pre-emphasis voltage variation compensation (PVVC) engine having a transition detection circuit and (2) a compensation driver coupled to the PVVC engine is described. In one embodiment, the compensation driver reduces data dependent voltage variations in pre-emphasis provided by the pre-emphasis circuitry. In one embodiment, in response to a predetermined data pattern detected by the PVVC engine, the compensation driver provides an additional boost to performance critical capacitive nodes of the pre-emphasis circuitry. The additional boost causes the performance critical capacitive nodes to charge or discharge more rapidly. In one embodiment, the PVVC engine further includes a digital finite impulse response (FIR) filter coupled to the transition detection circuit.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: January 26, 2016
    Assignee: Altera Corporation
    Inventors: Allen Chan, Wilson Wong, Tim Tri Hoang
  • Patent number: 9223334
    Abstract: A constant current circuit includes a first transistor, a second transistor having the gate and the source connected to the gate and the source of the first transistor, and having the drain connected to a load, a voltage adjustment circuit section that controls the drain voltage of the first transistor, a constant current generation circuit section that supplies a constant current to the first transistor, and a detection circuit section that determines whether at least one of the first transistor and the second transistor is unable to output a current proportional to the first constant current while at least one of the first transistor and the second transistor operates in the linear region, by performing a voltage comparison between a voltage at a connecting section between the voltage adjustment circuit section and the constant current generation circuit section and a predetermined reference voltage.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: December 29, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventor: Ippei Noda
  • Patent number: 9219479
    Abstract: A through silicon via (TSV) repair circuit of a semiconductor apparatus is provided. The TSV repair circuit includes a first chip, at least one second chip, at least two TSVs, at least two data path circuits, and an output logic circuit. Each data path circuit includes an input driving circuit, a short-circuit detection circuit, a bias circuit, and a leakage current cancellation circuit. The input driving circuit transforms an input signal into a pending signal and transmits the pending signal to a first terminal of the corresponding TSV. The short-circuit detection circuit detects a short circuit between the corresponding TSV and a silicon substrate according to the input signal and the first terminal of the TSV and generates a short-circuit detection output signal. The leakage current cancellation circuit prevents a leakage current produced by a first level voltage from entering the silicon substrate according to the short-circuit detection output signal.
    Type: Grant
    Filed: April 21, 2013
    Date of Patent: December 22, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Pei-Ling Tseng, Keng-Li Su
  • Patent number: 9048070
    Abstract: A dielectric window for a plasma treatment device for a plasma treatment device that uses microwaves as a plasma source. The dielectric window is circular-plate-shaped and allows microwaves to propagate. The dielectric window has a recess that has an opening on the lower-surface side and that indents in the plate thickness direction of the dielectric window, and is provided to the lower surface at which plasma is generated when the dielectric window is provided to the plasma treatment device. The recess has a bottom surface extending in the direction perpendicular to the plate thickness direction, and a side surface extending in the plate thickness direction from the circumferential edge of the bottom surface toward the opening of the recess. In addition, an inclined surface extends at an incline relative to the plate thickness direction from the opening-side circumferential edge of the side surface toward the opening of the recess.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 2, 2015
    Inventors: Caizhong Tian, Naoki Matsumoto, Koji Koyama, Naoki Mihara, Kazuki Takahashi, Jun Yoshikawa, Kazuki Moyama, Takehiro Tanikawa
  • Patent number: 9030229
    Abstract: An impedance tuning circuit includes a calibration unit and a post-processing unit. The calibration unit generates an initial pull-up code and an initial pull-down code by performing a calibration operation using an external resistor during an initial impedance tuning operation. The post-processing unit outputs the initial pull-up code and the initial pull-down code as a final pull-up code and a final pull-down code during the initial impedance tuning operation, and generates the final pull-up code and the final pull-down code by using the initial pull-up code and the initial pull-down code during a subsequent impedance tuning operation.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyung Hoi Koo
  • Patent number: 9007088
    Abstract: Preservation of quantum entanglement in a two-qubit system is achieved by use of the disclosed systems. Three different example two-qubit systems are shown: (1) a system employing a weak measurement, (2) a system in which a generalized amplitude dampening occurs without use of a weak measurement, and (3) an extended system in which the system is prepared in a more robust state less susceptible to decoherence prior to a generalized amplitude dampening.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: April 14, 2015
    Assignees: Texas A&M University System, King Abdulaziz City for Science and Technology
    Inventors: Zeyang Liao, M. Al-Amri, M. Suhail Zubiary
  • Patent number: 8988103
    Abstract: An electronic logic circuit uses areal capacitive coupling devices coupled together to process a set of data inputs. Each areal capacitive coupling device can be configured such that a floating gate potential of such device can be altered to at least a first state or a second state in response to receiving an input signal from the set of data inputs, which is coupled electrically to the floating gate. A majority function logic circuit (and other similar circuits) can be interconnected this way using far fewer gates than with a conventional CMOS implementation. Selective logic gates can also be enabled or disabled by configuring them effectively as memory devices.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: March 24, 2015
    Inventor: David K. Y. Liu
  • Patent number: 8970124
    Abstract: A photoelectric sensing sensitivity adjusting device includes: an LED for emitting light by being supplied with energy (current or voltage); a regulator for LED driving for supplying the energy to the LED; a light receiving device for receiving the light emitted from the LED; a digital potentiometer for controlling increase or decrease of the energy to be supplied to the LED; a CPU for digitally controlling, according to a control program, the increase or decrease of the energy to be supplied to the LED; and a photodetection portion for detecting an optical signal, converting the optical signal to an electrical signal, and outputting the electrical signal.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: March 3, 2015
    Assignee: Oval Corporation
    Inventors: Tatsumi Kameyama, Noriaki Nakayama, Yoshifumi Endo
  • Patent number: 8957703
    Abstract: Circuitry comprises a high voltage rail providing a high voltage level corresponding to a higher voltage domain, an intermediate voltage source, a low voltage rail, and devices that operate in a lower voltage domain. First devices in an upper voltage region are powered between the high voltage rail and an intermediate voltage rail powered by the intermediate source. Second devices in a lower voltage region are powered between the intermediate and low rails. On power up, the intermediate source is powered before the high voltage rail. An isolating circuit connects the intermediate source to a node when the high voltage rail is powered and isolates the node from the intermediate source when the high voltage rail is not powered to impede current flow from the intermediate source to the high voltage rail.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: February 17, 2015
    Assignee: ARM Limited
    Inventors: Mikael Rien, Jean-Claude Duby, Flora Leymarie, Fabrice Blanc, Thierry Padilla
  • Patent number: 8941309
    Abstract: A voltage-driven pixel circuit, a driving method thereof and a display panel including the voltage-driven pixel circuit are disclosed. The voltage-driven pixel circuit comprises a driving transistor, a retaining transistor, a switching transistor, a compensating transistor, a storage capacitance and an OLED device. The technical solutions disclosed here compensate for the unevenness of the threshold voltage of the N-type TFT transistors and OLED efficiently.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 27, 2015
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Zhongyuan Wu, Gang Wang
  • Patent number: 8933649
    Abstract: An example power converter includes a first winding, a second winding, a switch, a controller and an output circuit. The second winding is magnetically coupled to the first winding and the controller includes a feedback terminal and a common terminal. The controller is coupled to control the switch to regulate an output of the power converter in response to a feedback voltage received at the feedback terminal. The output circuit is coupled between the common terminal of the controller and a common reference of the power converter to provide an output voltage to a load. The feedback voltage is a positive voltage with respect to the common terminal and the output voltage is a negative voltage with respect to the common reference of the power converter.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: January 13, 2015
    Assignee: Power Integrations, Inc.
    Inventors: David Michael Hugh Matthews, Matteo Uccelli
  • Patent number: 8933635
    Abstract: Circuits and methods prevent ringing of white LED drivers by adding a high voltage coil switch (CS) circuit, a high voltage edge detector circuit, and a boot strap circuit. The coil switch (CS) circuit to short the coil of a boost converter, when the current in it reaches zero during DCM, comprises a series of 2 identical HV enhancement NMOS with bulk switch system. An Edge Detector circuit senses the fast falling edge of an LX node. A Boost Strap circuit lifts the gate of coil switch circuit above the battery voltage level and turns on the coil switch. A Boost Strap (BS) system lifts the gate of CS above the VBAT level and turns on CS, wherein minimum current is required to minimize impact on efficiency.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: January 13, 2015
    Assignee: Dialog Semiconductor GmbH
    Inventor: Pier Cavallini
  • Patent number: 8922124
    Abstract: Disclosed herein is a remotely adjustable lighting system with security features. The lighting system includes a lamp (e.g., luminaire) which carries solid-state light sources and a sensor. The solid-state light sources emit visible light at an adjustable output intensity. The sensor is responsive to line-of-sight wireless signals, and the lamp increases and decreases the output intensity of the light sources in response to output signals of the sensor. The lamp provides security features by selectively accepting and rejecting instructions carried by the line-of-sight wireless signals to vary the output intensity of the light sources.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Express Imaging Systems, LLC
    Inventors: William G. Reed, Dale H. DeGraff
  • Patent number: 8912723
    Abstract: A method for driving light adjustments, a device therefor and a light adjustable lamp including the device are disclosed. The device includes a light source driving circuit, an MCU and a temporary power supplying circuit. The MCU includes a current detecting module, an analyzing and processing module and a storage module. The analyzing and processing module obtains a connecting signal or a disconnecting signal of the light source driving circuit and thereafter extracts a stored firmware program of gradually varying brightness of a light source or stored information about a constant brightness state of the light source from the storage module for analyzing and processing, so as to generate a controlling signal of adjusting the brightness of the light source and send the controlling signal into the light source driving circuit. Then the light source driving circuit adjusts the brightness of the light source according to the controlling signal.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: December 16, 2014
    Inventors: Yingwen Liao, Lin Feng, Xiaoyu Wang
  • Patent number: 8912818
    Abstract: A calibration circuit includes an amplifier, a current steering digital-to-analog converter (DAC), a comparator, a slew calibration network, and an on-die termination (ODT) network. The amplifier generally has a first input, a second input, and an output. The first input generally receives a reference signal. The current steering digital-to-analog converter (DAC) generally has a first input coupled to the output of the amplifier, a first output coupled to the second input of the amplifier, and a second output coupled to a circuit node. The comparator generally has a first input receiving the reference signal, a second input coupled to the circuit node, and an output at which an output of the calibration circuit may be presented. The slew calibration network is generally coupled to the circuit node and configured to adjust a slew rate of the calibration circuit. The on-die termination (ODT) network is generally coupled to the circuit node.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Dharmesh Bhakta, Hong-Him Lim, Cheng-Gang Kong, Todd Randazzo
  • Patent number: 8901959
    Abstract: A hybrid IO cell for use with controlled collapse chip connection, wirebond core limited, wirebond IO limited, and wirebond inline chip designs is provided. A method of designing the hybrid IO cell includes designating a technology, determining a minimum pad width of the technology, and determining a minimum pad spacing of the technology. The method also includes determining a width of the hybrid IO cell based on the minimum pad width and the minimum pad spacing, setting a length of the hybrid IO cell equal to the determined width, and storing a definition of the IO cell in a library stored on a computer useable storage medium.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Chris J. Rebeor, Rohit Shetty