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| Number | Title | Issue Date |
| 8135555 | Strobe-offset control circuit A strobe offset control circuit is disclosed. The control circuit comprises a strobe signal input to receive a strobe signal and a data receiver to receive a data signal in response to a sample signal derived from the strobe signal. A calibration enable input is pro... | 03/13/2012 |
| 8108173 | Compensating for system delay and/or extraneous illumination in analyte analyzation A sensor that determines information related to a gaseous analyte in a body of fluid. The sensor comprises an emitter, a luminescable medium, a radiation sensor, and a processor. The emitter emits electromagnetic radiation having an oscillating intensity. The lumine... | 01/31/2012 |
| 8073646 | Plasma processing apparatus, radio frequency generator and correction method therefor A plasma processing apparatus includes a radio frequency generator capable of adjusting a target output power level based on the set power level and the offset level to output radio frequency power; a chamber in which a plasma process is performed; and a power detec... | 12/06/2011 |
| 8058893 | Frequency trimming for internal oscillator for test-time reduction An internal precision oscillator (IPO) is trimmed within a microcontroller integrated circuit. The microcontroller integrated circuit receives a test program into flash memory on the microcontroller integrated circuit from a tester. The microcontroller integrated ci... | 11/15/2011 |
| 8060331 | Controller of optical disk device An optical disk device includes a controller and a parameter calibrating apparatus. The controller includes: a first sub-controller, a second sub-controller and a third sub-controller. The first sub-controller, a second sub-controller in series with the first sub-co... | 11/15/2011 |
| 8005636 | Method of controlling clock signal A method of controlling a clock signal with a print controller is provided. In response to receiving an external signal, the print controller determines the number of cycles of a clock signal generated by a ring oscillator of the print controller during a predetermi... | 08/23/2011 |
| 7991572 | Delay lock loop delay adjusting method and apparatus Systems and methods for synchronizing communication between devices include using a test circuit to measure a propagation time through a delay circuit. The propagation time is used to determine an initial delay value within a delay lock loop. This delay value is the... | 08/02/2011 |
| 7974807 | Adaptive calibration for digital phase-locked loops Techniques for adaptively calibrating a TDC output signal in a digital phase-locked loop (DPLL). In an exemplary embodiment, a calibration factor multiplied to the TDC output signal is adaptively adjusted to minimize a magnitude function of a phase comparator output... | 07/05/2011 |
| 7930127 | Oscillator prescale calibration for harmonizing multiple devices with independent oscillators over an IC bus interface A system and method for synchronizing otherwise independent oscillators private to I2C Bus slave devices. An I2C Bus master device is capable of issuing two new general call commands, MEASURE PULSE and RESET PRESCALE. The I2C Bus sla... | 04/19/2011 |
| 7869972 | Method and system for synchronous rectification The method and system of the present invention uses synchronous rectification and frequency domain analysis to remove the need for calibration of the A/D and D/A components. It is applicable to any sensor based measurement in which either the sensor can be excited w... | 01/11/2011 |
| 7852099 | Frequency trimming for internal oscillator for test-time reduction An internal precision oscillator (IPO) is trimmed within a microcontroller integrated circuit. The microcontroller integrated circuit receives a test program into flash memory on the microcontroller integrated circuit from a tester. The microcontroller integrated ci... | 12/14/2010 |
| 7805273 | Waveform generator, waveform generation apparatus, test apparatus and computer readable medium Provided is a waveform generating apparatus that generates analog signal based on fundamental waveform data including a predetermined number of samples, including: phase difference calculating section that calculates phase difference between the initial phase and fi... | 09/28/2010 |
| 7778789 | Digital phase calibration method and system A method of digital phase calibration is disclosed. An input signal is sampled using a clock. The sample points of the sampled signal are changed by a scaler. A phase calibration is performed by adjusting the phase of the scaler to obtain an optimum phase for the sc... | 08/17/2010 |
| 7747405 | Line frequency synchronization This invention relates to line frequency synchronisation for use in diagnostics for alternating current electrical circuits. The invention provides a method of synchronising measurement system frequency with an alternating current line frequency comprising the steps... | 06/29/2010 |
| 7711510 | Method of crossover region phase correction when summing signals in multiple frequency bands A signal processing system compensates for the relative phase difference between multiple frequency bands so that the combination of the bands is constructive throughout a substantial portion of the band overlap or crossover region. In one embodiment, a signal combi... | 05/04/2010 |
| 7706998 | Delay lock loop delay adjusting method and apparatus Systems and methods for synchronizing communication between devices include using a test circuit to measure a propagation time through a delay circuit. The propagation time is used to determine an initial delay value within a delay lock loop. This delay value is the... | 04/27/2010 |
| 7668679 | Individual data line strobe-offset control in memory systems Systems and methods for strobe signal timing calibration and control in strobe-based memory systems are provided below. These strobe-offset control systems and methods receive a strobe signal from a memory device and in turn automatically generate separate per-bit s... | 02/23/2010 |
| 7617062 | DC current calculation for fuel cell control A process for determining the DC current in a fuel cell power plant includes the steps of determining current value from a power electronics converter of a power conditioning system of the power plant; determining a correction factor based upon losses within the con... | 11/10/2009 |
| 7610163 | Method of controlling quality for a print controller A method performed by a quality assurance integrated circuit for a print controller, the quality assurance integrated circuit comprising a memory; a system clock for generating a clock signal; clock trim circuitry for trimming the frequency of the clock signal; and ... | 10/27/2009 |
| 7593826 | Calibration method for smart antenna arrays The invention relates to a method of calibrating the reception path and the transmit path of an antenna array which is formed of at least three antennas and which is connected to a digital signal processor. For calibrating the reception path a signal of known amplit... | 09/22/2009 |
| 7580805 | Programmable calibration circuit for power supply current sensing and droop loss compensation A circuit for regulating power is disclosed. The present invention provides circuits and methods for current sensing variations, static droop settings, mismatched phase outputs, and temperature variations in a multiphase power regulator. The circuits may include a c... | 08/25/2009 |
| 7567880 | Interface circuit An interface circuit includes a variable delay circuit and a delay adjustment circuit to automatically detect a data valid window of a DQ signal and adjust an optimum delay amount of a DQS signal, and a fixed delay circuit to delay the DQ signal by a delay amount t | 07/28/2009 |
| 7542865 | Abnormality determination device of cylinder pressure sensor An abnormality determination device of a cylinder pressure sensor calculates a gain (sensing sensitivity coefficient) and an offset (bias) indicating an output characteristic of the cylinder pressure sensor. The device determines existence or nonexistence of an abno... | 06/02/2009 |
| 7493226 | Method and construct for enabling programmable, integrated system margin testing The present invention provides a margin testing system, incorporated in an electronic system (e.g., a computer system), that includes a controller, a frequency control module, and a voltage control module, and a fault bypass module. In response to commands from the ... | 02/17/2009 |
| 7487057 | Field device electronics with a sensor mechanism for process measurement A field device electronics with a sensor unit for process measurements, wherein the field device electronics is connected with the sensor unit over corresponding signal paths, and wherein the field device electronics receives analog measurement signals (S1) o... | 02/03/2009 |
| 7480580 | Apparatus and method for estimating synchronized phasors at predetermined times referenced to an absolute time standard in an electrical system An apparatus and method estimates a plurality of synchronized phasors at predetermined times referenced to an absolute time standard in an electrical power system. The method includes acquiring and determining a frequency of a power system signal, sampling the power... | 01/20/2009 |
| 7457715 | Enhanced flexible process optimizer A method is provided for monitoring characteristics of grinding tools and grinding system behavior in a production grinding process. The method includes steps of acquiring sensor data indicative of a rate of material removal over one or more measurement periods duri... | 11/25/2008 |
| 7444246 | System and method for determining fluctuating pressure loading on a component in a reactor steam dome A system and method for accurately estimating the fluctuating pressure loads on components, such as steam dryers, within a BWR steam dome using pressure time history measurements made on components of the BWR facility external to the steam dome. The method uses exis... | 10/28/2008 |
| 7444570 | Apparatus and method for controlling frequency of an I/O clock for an integrated circuit during test A test system including a device under test (DUT) and a tester, where the DUT includes I/O interface logic and a clock circuit. The clock circuit includes a core clock circuit, a pad clock circuit, a test clock circuit, and a select circuit. The core clock circuit g... | 10/28/2008 |
| 7437258 | Use of I2C programmable clock generator to enable frequency variation under BMC control The present invention provides systems and methods for performing frequency margin testing of a computer system, such as a server. A system of the invention can include a controller, e.g., a BMC, internal to the computer system and a digital frequency synthesizer th... | 10/14/2008 |
| 7437259 | Parameter calibrating apparatus and method for a controller A controller of an optical disk device includes: a first sub-controller, a second sub-controller and a third sub-controller. The first sub-controller includes serially connected a first lead-lag filter and a first low pass filter. The second sub-controller includes ... | 10/14/2008 |
| 7430484 | Signal processing method and apparatus for use in real-time subnanometer scale position measurements with the aid of probing sensors and beams scanning periodically undulating surfaces such as gratings and diffraction patterns generated thereby, and the like An improved signal processing method and apparatus are presented for use in real-time sub-nanometer scale position measurements with the aid of probing sensors and/or beams scanning periodically undulating surfaces such as a grating and diffraction patterns generate... | 09/30/2008 |
| 7415363 | High resolution torque measurement on a rotating shaft with movement compensation An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves h... | 08/19/2008 |
| 7412341 | Jitter amplifier, jitter amplification method, electronic device, testing apparatus, and testing method There is provided a jitter amplifier for amplifying or attenuating a jitter component contained in an input signal, having a jitter demodulating section for demodulating the jitter component from the input signal and an amplifying circuit for amplifying or attenuati... | 08/12/2008 |
| 7408821 | Method for error compensation and a memory control device adapted for error compensation A memory control device and a memory control method are provided to compensate for additional delay subsequent to the change in environmental factors and to permit a smooth writing operation. The memory control device includes a controller that calculates a number o... | 08/05/2008 |
| 7409307 | Calibration apparatus, calibration method, testing apparatus, and testing method There is provided a calibration apparatus for calibrating a jitter measuring circuit for outputting a jitter measuring signal corresponding to a value of jitter contained in an input signal, having a signal inputting section for sequentially inputting the first inpu... | 08/05/2008 |
| 7403764 | RF power delivery diagnostic system An RF power delivery diagnostic system is provided herein. The system comprises an RF power source (303), an impedance matching network (305), a plasma reactor (307) in electrical contact with the RF power source by way of the impedance matching... | 07/22/2008 |
| 7400993 | Method and system for accuracy of speed and acceleration measurements on rotating machinery with a speed wheel A method and system for calculation of rotation dependent parameters in a system that senses shaft rotation of a toothed speed wheel. The method includes determining the passing edges of multiple gear teeth on a rotating speed wheel; calculating rotational speed of ... | 07/15/2008 |
| 7389193 | Apparatus and method for calibrating transmission paths in a multicarrier communication system using multiple antennas An apparatus and method for calibrating transmission paths in a multicarrier communication system using multiple antennas are provided. In the transmission path calibrating apparatus, a calibration processor generates reference signals to estimate distortions in pha... | 06/17/2008 |
| 7389192 | Determining data signal jitter via asynchronous sampling A method for determining data signal jitter via asynchronous sampling provides a low cost and production-integrable mechanism for measuring data signal jitter. The data signal is edge-detected and sampled by a sampling clock of unrelated frequency the sampled values... | 06/17/2008 |
