Patents Examined by Carol S. W. Tsai
  • Patent number: 7343256
    Abstract: A configurable semiconductor has a device characteristic that is controllable as a function of at least one external impedance. A measurement circuit measures an electrical characteristic of the at least one external impedance and determines a select value corresponding to the measured electrical characteristic. A first circuit controls the device characteristic as a function of the select value.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: March 11, 2008
    Assignee: Marvell International, Ltd.
    Inventor: Sehat Sutardja
  • Patent number: 7340369
    Abstract: A device, and an analogous method and program, for detecting whether different tires are mounted on the left and right driving wheels of a vehicle and accurately detecting decreased tire pressures. The device detects the rotational speeds of wheels mounted on the vehicle, detects torque applied to driving wheels, and calculates the inclinations of straight lines representing (1) the relation between the rotational speed ratio of the front and rear left side wheels and torque applied to driving wheels and (2) the relation between the rotational speed ratio of the front and rear left side wheels and torque applied to driving wheels. The device compares the inclinations of the lines to detect whether different tires are mounted on the driving wheels. Based on the comparison of the inclinations, the device changes the threshold for judging tire deflation to different values for different tires and tires that are not different.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: March 4, 2008
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Yuji Oshiro
  • Patent number: 7333902
    Abstract: A system for determining an operating limit of at least one battery according to some embodiments of the present invention comprises a voltage module that measures a voltage V across at least one battery during first and second periods. A current sensor that measures current I supplied by the at least one battery during the first and second periods. A limit module estimates an ohmic resistance R0 based on at least one of a temperature of the at least one battery and a time difference between the first and second periods, and that estimates a sum of a polarization voltage VP and an open circuit voltage V0 of the at least one battery at the second period based on the voltage V and current I of the at least one battery at the first period and an ohmic resistance R0 of the at least one battery.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: February 19, 2008
    Assignee: Cobasys, LLC
    Inventor: Robert J. Melichar
  • Patent number: 7333909
    Abstract: A method of verifying a circuit implementing a data transfer protocol is disclosed. According to one embodiment of the invention, the method comprises steps of providing a block under test that implements a variable latency data transfer protocol; coupling a verification circuit to the block under test; enabling variable latency data transfers to the block under test; and verifying that the block under test is implementing the variable latency data transfer protocol. The method could be implemented to verify the operation of a memory controller of an FPGA, for example. According to another embodiment, a method enabling a multi-stage verification is disclosed. Finally, specific implementations of a verification circuit coupled to an on-chip memory controller of an FPGA are disclosed.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: February 19, 2008
    Assignee: Xilinx, Inc.
    Inventors: Mehul R. Vashi, Alex Scott Warshofsky
  • Patent number: 7333922
    Abstract: A method of monitoring machine operation includes sensing an operating characteristic of a plurality of machines and calculating a performance metric. The performance metric is indicative of the operating characteristic of at least a portion of the plurality of machines. The method also includes storing the performance metric and comparing the performance metric to at least one other stored performance metric.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: February 19, 2008
    Assignee: Caterpillar Inc.
    Inventor: Robert Kimball Cannon
  • Patent number: 7333915
    Abstract: A signal conditioning arrangement includes a sensor arrangement for sensing a measured quantity and for outputting an output signal having a first or a second logical signal state based on the measured quantity, and means for generating an evaluating impulse if the logical signal state of the output signal does not change for a maximum predetermined time duration, and which are further formed to allocate a first or a second pulse signal state, which differs from the signal state of the output signal which the output signal has during the predefined time duration, to the evaluating impulse. Furthermore, the signal conditioning arrangement includes means for combining the output signal and the evaluating impulse, with means for providing being formed to provide a conditioned output signal, the conditioned output signal having, when an evaluating impulse is present, the impulse signal state thereof and otherwise having the logical signal state of the output signal.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: February 19, 2008
    Assignee: Infineon Technologies AG
    Inventor: Mario Motz
  • Patent number: 7328115
    Abstract: A quality assurance integrated circuit for a print controller is provided. The IC has a memory, a system clock having a ring oscillator for generating a clock signal, clock trim circuitry for trimming the clock signal generated by the system clock and a processor. The processor is arranged to, in response to receiving an external signal, determine the number of cycles of the clock or external signal during a predetermined number of cycles of the external or clock signal, respectively and to output the determined number of cycles to an external circuit, and, in response to receiving a trim value based on the determined number of cycles from the external circuit, store the trim value in the memory and control the clock trim circuitry to trim the frequency of the clock signal generated by the ring oscillator using the trim value.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: February 5, 2008
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Gary Shipton, Simon Robert Walmsley
  • Patent number: 7324915
    Abstract: A method for transmitting control instructions to a sensor in a position tracking system includes generating a drive signal for driving a field generator. A control signal including the control instructions is superimposed on the drive signal. The field generator is driven with the drive signal, so as to generate a field to be sensed by the sensor. The field is detected at the sensor in order to determine position coordinates of the sensor and to demodulate the control signal so as to extract the control instructions. A functionality of the sensor is controlled based on the extracted control instructions.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: January 29, 2008
    Assignee: Biosense Webster, Inc.
    Inventors: Andres Claudio Altmann, Assaf Govari, Yaron Ephrath
  • Patent number: 7321834
    Abstract: Power flow models of Interline Power Flow Controllers (IPFC) for large-scale power systems are studied, in details. Mathematical models of the IPFC, using the d-q axis decompositions of control parameters are derived. In this framework, for each IPFC, only two control parameters are added to the unknown vector in the iteration formula and the quadratic convergence characteristic is preserved. Simulations results from several practical large-scale power systems embedded with multiple Convertible Static Compensators (CSCs) demonstrate the effectiveness of the proposed models. Comparisons with existing models are made to elucidate the performance of the convergence.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: January 22, 2008
    Assignee: Chang Gung University
    Inventors: Chia-Chi Chu, Sheng-Huei Lee, Hung-Chi Tsai
  • Patent number: 7318000
    Abstract: Systems and methods configured to guide and manage laboratory analytical process control operations. A Biometric quality control (QC) process application is configured to monitor bias and imprecision for each test, characterize patient population data distributions and compare, contrast, and correlate changes in patient data distributions to any change in QC data populations. The Biometric QC process monitors the analytical process using data collected from repetitive testing of quality control materials and patient data (test results). The QC process identifies the optimal combination of, for example, frequency of QC testing, number of QCs tested, and QC rules applied in order to minimize the expected number of unacceptable patient results produced due to any out-of-control error condition that might occur.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: January 8, 2008
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Curtis Parvin, George Cembrowski, William G. Cooper
  • Patent number: 7317998
    Abstract: A method for the calculation of an output spectrum of a matrix converter in which m phases of a generator as an input are alternatingly connected via a multiple number of controllable bi-directional switches arranged in an (m×n) matrix with n (n<m) phases of a load as an output. An assessment of the spectrum to be used, for example, for compensation of harmonic distortions of the output spectrum can be obtained by calculating the electromotive force spectrum based on at least one of the connectivity of the phases, on the phase relationship between input and output, and on the instants when commutations of the switches are initiated and on the instants when commutations of the switches are completed.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: January 8, 2008
    Assignee: Alstom Technology Ltd
    Inventors: Alain Lacaze, Massimiliano Visintin
  • Patent number: 7318010
    Abstract: A method of regulating wireless sensor network energy use includes establishing a wireless sensor network having at least one access point node, and having a plurality of sensor nodes defining a sensing region; identifying at least one environment parameter related to an environment of the sensing region that is needed to make an operational decision; and adjusting data collection from the plurality of sensor nodes based on the at least one environment parameter to adjust a power consumption of at least one sensor node of the plurality of sensor nodes.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: January 8, 2008
    Assignee: Deere & Company
    Inventor: Noel Wayne Anderson
  • Patent number: 7318009
    Abstract: A monitoring system for use with at least one device configured to provide information relating to the device includes at least one first input configured to receive a plurality of second, inputs from the at least one device indicative of at least one parameter relating to the at least one device, and a processor coupled to the at least one first input, the processor configured to provide a user with indicia of the second inputs for defining an event and at least one criterion for defining the event using at least one of the second inputs, the processor being configured to prompt the user to define the event using at least one of the second inputs and the least one criterion and to provide guidance to the user regarding the second inputs and the at least one criterion for defining the event.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: January 8, 2008
    Assignee: American Power Conversion Corporation
    Inventors: Jeffrey S. Beam, Craig D. McCowen, Ross E. Dozier
  • Patent number: 7317994
    Abstract: A method for analyzing vibration including: acquiring a vibration signal; isolating a vibration signal event in the acquired signal; determining a frequency of a damped sinusoid of the vibration signal event, wherein the damped sinusoid characterizes the vibration signal event, and using the characteristic damped sinusoid to identify an occurrence of the vibration signal event in another vibration signal.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: January 8, 2008
    Assignee: General Electric Company
    Inventors: Naresh Sundaram Iyer, John Erik Hershey, James Kenneth Aragones, Kai Frank Goebel, Weizhong Yan, Piero Patrone Bonissone, Charles Terrance Hatch
  • Patent number: 7313498
    Abstract: A method and device for testing an electrical circuit, which do not require a thorough electrical circuit simulation but reliably identifying circuit faults. Preferred embodiments generate a fault signal that indicates that a given state of the circuit, which is defined by an electrical state variable, could occur in an electrical circuit. Generally, electrical components are individually treated as short-circuited or non-conducting regarding each pair of connections of the components. An electrical state variable is permanently allocated to at least one network node or a connecting pin of the electrical circuit. Electrical state variables of the network nodes and connecting pins of the components that are to be treated as short-circuited are allocated to each network node and each connecting pin. An assessment is made at least based on the allocated state variables as to whether the given circuit state can occur.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: December 25, 2007
    Assignee: Infineon Technologies AG
    Inventors: Peter Baader, Tilman Neunhoeffer
  • Patent number: 7308384
    Abstract: An HVAC system includes a central controller which communicates with a multiple of HVAC components over a digital communication bus. The central controller maintains an ordered fault list that includes the source of a fault, a description of the fault, the last occurrence of the fault, and the number of sequential occurrences, or repetitions across the entire HVAC system.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: December 11, 2007
    Assignee: Carrier Corporation
    Inventors: Rajendra K. Shah, Chris Puranen
  • Patent number: 7308385
    Abstract: A system for empirically diagnosing a condition of a monitored system. Estimates of monitored parameters from a model of the system provide residual values that can be analyzed for failure mode signature recognition. Residual values can also be tested for alert (non-zero) conditions, and patterns of alerts thus generated are analyzed for failure mode signature patterns. The system employs a similarity operator for signature recognition and also for parameter estimation. Failure modes are empirically determined, and precursor data is automatically analyzed to determine differentiable signatures for failure modes.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: December 11, 2007
    Inventors: Stephan W. Wegerich, Andre Wolosewicz, R. Matthew Pipke
  • Patent number: 7308372
    Abstract: A method, an apparatus, and a system for phase jitter measurement circuits are described herein.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: December 11, 2007
    Assignee: Intel Corporation
    Inventors: Michael C. Rifani, Keng L. Wong, Christopher Pan
  • Patent number: 7308371
    Abstract: A method and system for performing a bit error rate test on a device with substantial duty cycle output distortion are described herein.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: December 11, 2007
    Assignee: Intel Corporation
    Inventor: Shao Chee Ong
  • Patent number: 7305328
    Abstract: A system and method of accurately predicting and reporting a value of a property based on a weighted average of values predicted by at least two prediction models. The system and method include the steps of accessing predicted values, determined by the prediction models, for the property; determining property-specific proportional prediction error distribution information for each predicted value determined by each prediction model; assigning a weight to the predicted value determined by each prediction model by using the property-specific proportional prediction error distribution information; and generating a property-specific weighted average value based on combination of the weight and the predicted value determined by each prediction model and reporting the property-specific weighted average value to minimize prediction error during prediction of the property value.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: December 4, 2007
    Assignee: Fannie Mae
    Inventors: Mark Fleming, Chionglong Kuo