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| Number | Title | Issue Date |
| 8093909 | Method and device for measuring phase noise A method and a device for measuring the phase noise of a signal registers the measurement signal (V) with a given measurement frequency (f1) and with a superimposed phase noise (f1(t)), divides the measurement signal (V) into a first and second... | 01/10/2012 |
| 8067947 | Low noise differential charge amplifier for measuring discrete charges in noisy and corrosive environments A low noise differential charge amplifier circuit for measuring discrete (e.g., pico coulomb) charges in noisy, elevated temperature and corrosive environments. An input stage of a differential charge amplifier circuit includes a twisted and or untwisted two pair ca... | 11/29/2011 |
| 8030947 | Electronic apparatus noise measurement method Second and third ports of a network analyzer are individually connected via cables to predetermined connection points on a differential transmission circuit on an object to be measured. A differential cable is connected to the differential transmission circuit. An a... | 10/04/2011 |
| 7969161 | Optimal drive frequency selection in electrical tomography Electrical tomography drive frequency selection systems and methods are disclosed. One aspect of the present invention pertains to a system for optimally selecting a drive frequency of an electrical tomography which comprises a sensor electrode stably associated wit... | 06/28/2011 |
| 7952364 | Power noise detecting device and power noise control device using the same A power noise detecting device includes a plurality of power lines, and a power noise detecting part configured to detect power noise by rectifying voltages of the plurality of power lines and converting the rectified voltages into effective voltages. ... | 05/31/2011 |
| 7932731 | Device and method for testing a noise immunity characteristic of analog circuits A device for testing noise immunity of a circuit includes: an analog circuit, an internal stable reference signal source, an internal power supply module to receive a high level voltage supply, and a signal modulator to provide a noisy signal to the power supply mod... | 04/26/2011 |
| 7880477 | Integrated circuit arrangement An integrated circuit arrangement has a signal input 20 and a signal output 60, a signal processing unit 100 which is connected to the signal input 20 and to the signal output 60, a noise source 50 for generating a noise sig... | 02/01/2011 |
| 7868626 | Burst noise canceling apparatus The present invention provides a burst noise canceling apparatus which can remove burst noises even in a one-time data, without the need of a large amount of memory. The device according to the present invention incorporates an analog-to-digital converter for sampli... | 01/11/2011 |
| 7719288 | Apparatus for detecting imbalances in a paired line A device for measuring and isolating noise-creating imbalances in a paired telecommunications line has an internal circuit which comprises a balanced center tapped termination consisting of precisely equal resistor pairs. The circuit includes an adjustable sine wave... | 05/18/2010 |
| 7675293 | Method and apparatus for in-situ characterization of energy storage and energy conversion devices Disclosed are methods and apparatuses for determining an impedance of an energy-output device using a random noise stimulus applied to the energy-output device. A random noise signal is generated and converted to a random noise stimulus as a current source correlate... | 03/09/2010 |
| 7583088 | System and method for reducing noise in sensors with capacitive pickup An apparatus and method are provided for reducing noise in a capacitive sensor (200). One apparatus includes a gain stage (210) including an output, the gain stage configured to generate a first signal having a noise component and a second signal havin... | 09/01/2009 |
| 7554338 | Display for measuring phase noise characteristics Time variation of phase noise characteristics is displayed for measurement. A peak power of a signal under test is detected to define the frequency as a reference frequency. An offset frequency from the reference frequency is repetitively changed and each time the p... | 06/30/2009 |
| 7443173 | Systems and techniques for radio frequency noise cancellation Various embodiments for radio frequency (RF) noise cancellation are described. In one embodiment, an apparatus may comprise an RF noise cancellation system arranged to sense platform noise observed by a radio subsystem, create an inverse version of the sensed platfo... | 10/28/2008 |
| 7436188 | System and method for improving time domain processed sensor signals Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a... | 10/14/2008 |
| 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 |
| 7405574 | Signal detector A signal suppression filter (22) that inhibits high-frequency signals contained in power voltage and a signal separation filter (23) that prevents transmission of the high-frequency signals are provided in series on power lines (21A), (21... | 07/29/2008 |
| 7372278 | Electric potential measuring apparatus electrostatic capacitance measuring apparatus, electric potential measuring method, electrostatic capacitance measuring method, and image forming apparatus An electric potential measuring apparatus includes a detecting electrode, a modulator for changing an electrostatic capacitance between a measurement object and the detecting electrode by mechanical vibration, a charge detector for detecting the amount of charges el... | 05/13/2008 |
| 7365548 | System and method for measuring on-chip supply noise A method and system for measuring noise of an on-chip power supply. In an embodiment, the system comprises a delay line that receives as an input a signal such as a square wave. The delay line may comprise a series of inverters connected to the power supply. The out... | 04/29/2008 |
| 7355413 | Testing method/arrangement measuring electromagnetic interference of noise in a to-be-tested printed circuit board A testing method for measuring electromagnetic interference of a noise on a to-be-tested printed circuit board, has the steps of: a) injecting a signal simulating an expected noise of a predetermined device mounted on the to-be-tested printed circuit board, into the... | 04/08/2008 |
| 7343256 | Configurable voltage regulator 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 correspon... | 03/11/2008 |
| 7333051 | Methods and devices for determining the linearity of signals A method (for example, machine-implemented, e.g., via a receiver), for determining whether a transmitted pulsed-signal is a linear or non-linear frequency modulated (FM) signal, includes: iteratively determining upper and lower bound slopes associated with frequency... | 02/19/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7315172 | Method for measuring spectral noise densities beyond instrument capability with deterministic confidence levels A mechanism for measuring noise densities below the noise floor of a measuring instrument. The measuring instrument may first acquire a fully-averaged reference spectral noise density trace and estimate corresponding reference statistical parameters. Based on the re... | 01/01/2008 |
| 7315171 | Electronic judging apparatus for working state of the equipment The invention provides the electronic judging apparatus to detect the working state of the other electric equipment without modifying it inside. The common mode noise around the electric power supplying wires of the other equipment is measured by using the special m... | 01/01/2008 |
| 7298151 | Methods and apparatus for reducing thermal noise Methods and apparatus for reducing the thermal noise integrated on a storage element are disclosed. One embodiment of the invention is directed to a sampling circuit comprising a sampling capacitor to store a charge, the sampling capacitor being exposed to an ambien... | 11/20/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292182 | Method of calibrating a microwave source The present invention relates to a method for calibrating the phase of a microwave source, in which: a calibration circuit is closed, the calibration circuit comprising an injection channel connected to a measurement channel via the source to be calibrated; a test s... | 11/06/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7286622 | System and method for performing on-chip synchronization of system signals utilizing off-chip harmonic signal Aspects of the invention provide a method end system for reducing signal distortion within an on-chip transceiver module. In response to receipt of a signal bearing at least one external clock frequency, at least one harmonic signal of the signal bearing the at leas... | 10/23/2007 |
| 7285962 | Method and apparatus for evaluating susceptibility to common mode noise in a computer system A system for injecting noise signals onto power generated by a power source comprising: a voltage source; a device under test having a power input in operable communication with the noise introduction apparatus; and a noise introduction apparatus interposed between ... | 10/23/2007 |
| 7279907 | Method of testing for power and ground continuity of a semiconductor device A method of testing for power and ground continuity of a semiconductor device having Input and Output (IO) pins and at least a pair of power and ground pins includes identifying the power and ground pins of the device. A victim pin is selected from the IO pins of th... | 10/09/2007 |
| 7253600 | Constant slope ramp circuits for sample-data circuits A sample-data analog circuit includes a level-crossing detector. The level-crossing detector controls sampling switches to provide a precise sample of the output voltage when the level-crossing detector senses the predetermined level crossing of the input signal. A ... | 08/07/2007 |
| 7249406 | Method to detect magnetic pole defects in perpendicular recording heads at wafer level The perpendicular magnetic head fabrication and testing method includes the additional fabrication of magnetic pole testing structures in the kerf area of the wafer substrate. Particularly, magnetic interconnect pieces are fabricated in the kerf area to magnetically... | 07/31/2007 |
| 7227350 | Bias technique for electric utility meter The invention contemplates an electrical power meter and method of operating the same, where the meter has electronic components (e.g., a power supply and a voltage sensing circuit) and receives alternating current (AC) voltage from an electrical power line. The inv... | 06/05/2007 |
| 7221167 | Signal distortion measurement and assessment system and method The invention relates to an arrangement for measuring and assessing properties of a system (28) which transfers an electrical, mechanical or acoustical signal or converts an excitation signal x into another signal y. An error system (30) models the tra... | 05/22/2007 |
| 7221139 | Multi-channel radiometer imaging system A radiometer system includes a housing and an RF board contained within the housing. Balanced radiometer channels receive an unknown signal and known reference. Each balanced radiometer channel includes at least one quadrature hybrid and amplifier circuit to provide... | 05/22/2007 |
| 7221347 | Apparatus and method to improve a response speed of an LCD An apparatus and method thereof to improve a response speed of an LCD includes a noise rejection unit and a comparator. The noise rejection unit rejects noise in current digital image data and previous digital image data at a same pixel position as in the current di... | 05/22/2007 |
| 7218122 | Power disturbance generator An apparatus selectively generates a disturbance in a three-phase supply voltage provided to a load. The apparatus includes input connections for receiving a first phase voltage, a second phase voltage and a third phase voltage of the three-phase supply voltage. The... | 05/15/2007 |
| 7205165 | Method for determining the reliability of dielectric layers The present invention is generally directed to various methods for determining the reliability of dielectric layers. In one illustrative embodiment, the method comprises providing a device having a dielectric layer, applying a plurality of constant voltage pulses to... | 04/17/2007 |
| 7198193 | Method and apparatus for identifying a set of multiple items on conveyor system with multiread transponders A three dimensional (3D) radio frequency antenna is positioned on one side of a conveyor which has a movable part for moving items, each of which has a radio frequency transponder, into and out of the antenna such that the items when in the antenna are completely su... | 04/03/2007 |
