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| Number | Title | Issue Date |
| 8143900 | Communication system fault location using signal ingress detection Detecting ingress of a transmitted signal into a cable communication system due to a radio frequency signal transmitted from a moving vehicle and interrogation of transmitter location over a separate wireless link provides monitoring of shielding integrity or flaws ... | 03/27/2012 |
| 7944214 | Padé approximant based compensation for integrated sensor modules and the like Methods and systems using Pade' Approximant expansion ratios provide mappings between nonlinear sensors and a more linear output domain. The method includes a method of converting an input digital signal having a nonlinear dependency on a physical variable into an o... | 05/17/2011 |
| 7932729 | Test apparatus and test method Provided is a test apparatus that tests a device under test, comprising a pattern generating section that generates a test pattern determined according to a test signal to be supplied to the device under test; a timing signal generating section that generates a timi... | 04/26/2011 |
| 7928737 | Electrical overstress and transient latch-up pulse generation system, circuit, and method A circuit arrangement, system, and method to test a device with a plurality of pins for electric overstress and transient induced latch-up characteristics. The circuit arrangement includes an inverting operational amplifier with a unity gain to receive a triggering ... | 04/19/2011 |
| 7924022 | Evaluation board and failure location detection method An evaluation board, on which is mounted a chip to be evaluated is provided. Particularly, the evaluation board includes a monitoring window for monitoring a power supply part, a ground part, and a surface of the chip, a first signal input part for inputting signals... | 04/12/2011 |
| 7915898 | Integrated cable/connector shielding surveillance system A system determining whether the shielding on a shielded signal or power cable has been compromised without the need of detaching the cable. A special-made cable is used with a dedicated shielding surveillance conductor and a process for injecting a known current on... | 03/29/2011 |
| 7859268 | Method of testing driving circuit and driving circuit for display device A test signal is supplied to a test switch provided between a D/A converter for selecting and outputting a gray scale voltage of the driving circuit and an amplifier for amplifying and supplying an output voltage at the D/A converter to set a test mode, and an outpu... | 12/28/2010 |
| 7859269 | Pade' approximant based compensation for integrated sensor modules and the like Methods and systems using Pade' Approximant expansion ratios provide mappings between nonlinear sensors and a more linear output domain. The method includes (a) generating a variably amplified version of the input signal in accordance with a produced and variable ga... | 12/28/2010 |
| 7737701 | Method and tester for verifying the electrical connection integrity of a component to a substrate A method for verifying the integrity of the electrical connection between at least one signal path of a substrate and at least one respective contact of a component mounted on the substrate is disclosed. The method includes generating a step signal on one of the at ... | 06/15/2010 |
| 7714589 | Array test using the shorting bar and high frequency clock signal for the inspection of TFT-LCD with integrated driver IC In accordance with the present invention, a first shorting bar drives the data lines of a TFT array having integrated gate driver circuitry. Another set of shorting bars drive the corresponding terminals of the gate driver circuitry. The pixel voltages are measured ... | 05/11/2010 |
| 7626398 | System for isolating faults between electrical equipment A system is disclosed that can be inserted between cable runs of electrical equipment so as to provide access to signal/data lines associated with the electrical equipment. The system includes a microprocessor and a matrix switch and preferably display equipment and... | 12/01/2009 |
| 7586312 | Power cycle test method for testing an electronic equipment A power cycle test method for testing an electronic equipment (30) includes: configuring a total test count and a current test count; updating the current test count by incrementing the current test count by a value; utilizing a corresponding AC control signa... | 09/08/2009 |
| 7511506 | Semiconductor testing system and testing method According to an embodiment of the invention, a semiconductor testing system for testing a semiconductor device including an output buffer switching between a first mode for outputting data based on an input test signal and a second mode for setting an output termina... | 03/31/2009 |
| 7489137 | Power line induction of sheath test current to discover defective coaxial cable A method to discover defective coaxial shielding in cable lines in a building by inducing a test current into the nearby alternating current (AC) power lines (also known as “mains” in the United Kingdom) and measuring a resulting induced test signal inside the c... | 02/10/2009 |
| 7427867 | Method and system for non-destructive evaluation of conducting structures Method and system for non-destructive evaluation for a conducting structure by measuring the electrical impulse response thereof including applying a PRBS test input signal to the conducting structure, detecting an output signal from the conducting structure and pro... | 09/23/2008 |
| 7423545 | Failed filter arrest indicator and method for use in multiple arrester location The present invention is a technique for locating and identifying a failed filter/arrester in an underground conveyance such as a fiber optic cable. A sensor is installed in the filter/arrester housing to sense grounding of a cable locating frequency. The sensor wil... | 09/09/2008 |
| 7408362 | Electronic package and method for testing the same An integrated circuit package includes at least two electronic circuits. A first of the at least two electronic circuits includes a digital input and a digital output and a test mode control line for setting the first integrated circuit chip into a determined test m... | 08/05/2008 |
| 7408361 | Detection circuit for measurement of test lead and using the same A detecting method of a detecting circuit with a plugged test lead. The method includes setting an operation mode of the detecting circuit by a recognizing unit, transmitting a signal to the recognizing unit by an oscillating unit when the test lead plugs or unplugs... | 08/05/2008 |
| 7403129 | Electrical switching apparatus and method employing acoustic and current signals to distinguish between parallel and series arc faults A circuit breaker includes a first lug and second and third acoustic lugs electrically connected to a power circuit. Separable contacts are electrically connected in series between the first lug and the second acoustic lug. An operating mechanism opens and closes th... | 07/22/2008 |
| 7385410 | Method of and apparatus for testing for integrated circuit contact defects Various tester configurations are provided that injects test signals into nets (e.g. 24). Non-linear characteristics of the response are detected (e.g. harmonics, do offset) and used to assess the adequacy or otherwise of device connections in the net. ... | 06/10/2008 |
| 7367236 | Non-destructive inspection system and associated method An assembly, system, and method for identifying defects in a structure are provided. The assembly includes a structure of a metallic or composite material, and a flexible sheet of material positioned adjacent to the structure. The assembly also includes a plurality ... | 05/06/2008 |
| 7362106 | Methods and apparatus for non-contact testing and diagnosing of open connections on non-probed nodes A method and apparatus for detecting open defects on non-probed node under test of an electrical device using capacitive lead frame technology is presented. In accordance with the method of the invention, a probed node neighboring the non-probed node under test is s... | 04/22/2008 |
| 7358744 | Method for testing the serviceability of transducers The invention relates to a two-wire transducer in automation engineering that outputs a measurement signal as an injected current. For the method to test the serviceability, it is proposed to increase the DC loop current (IS), independently of the measure... | 04/15/2008 |
| 7345366 | Apparatus and method for testing component built in circuit board A multi-layered circuit board a built-in component including multiple terminals, at least one signal pad formed on a top surface of the multi-layered circuit board for signal transmission, each of the at least one signal pad corresponding to one of the multiple term... | 03/18/2008 |
| 7342758 | Method and system for detecting stand-alone operation of a distributed generating system A method and a system for detecting stand-alone operation of a distributed generating system having a generating source connected in shunt with an independent power distribution system via a first branch breaker are proposed. A voltage or a frequency signal on the i... | 03/11/2008 |
| 7332914 | Conductor inspection apparatus and conductor inspection method Disclosed is a conductor inspection apparatus capable of detecting a state of an inspection-target electric conductor with a high degree of accuracy in a non-contact manner. The inspection apparatus includes a signal supply section 510 for supplying an inspec... | 02/19/2008 |
| 7324913 | Methods and apparatus for testing a link between chips In a first aspect, a first method of testing a link between a first chip and a second chip is provided. The first method includes the steps of, while operating in a test mode, (1) transmitting test data of sufficient length to enable exercising of worst case transit... | 01/29/2008 |
| 7320115 | Method for identifying a physical failure location on an integrated circuit A method is disclosed for identifying a physical failure location on an IC without using layout-versus-schematic (LVS) verification tool. In the method, the integrated circuit is tested with one or more test patterns to identify a failure port thereon. Hierarchical ... | 01/15/2008 |
| 7279996 | Method of functionality testing for a ring oscillator A method and apparatus is provided for testing the logic functionality and electrical continuity of a ring oscillator comprising an odd number of inverters connected to form a closed loop. In the method and apparatus, a known value is forced through the ring oscilla... | 10/09/2007 |
| 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 |
| 7276914 | System and method for guided TDR/TDT computerized tomography A system for detecting a defect or discontinuity in media or at an interface of the media includes a signal generator; a transmission path coupled to the signal generator, wherein the transmission path is arranged along or through the media; a detection circuit for ... | 10/02/2007 |
| 7274352 | Combining detection circuit for a display panel The present invention relates to a combining detection circuit for a flat panel display, which applies a combination circuit to detect the layout of a liquid crystal display thin film transistor array (LCD TFT array) manufacturing process. This method uses a plurali... | 09/25/2007 |
| 7271597 | Electronic device, transmission system, and method for determining connection condition An electronic device has a first signal path, a first power supply path, and a connector that transmits to an external device the input signal on which the voltage has been superposed. The device also has a first power supply switch inserted into the first power sup... | 09/18/2007 |
| 7272528 | Reloadable word recognizer for logic analyzer A test and measurement instrument such as a Logic Analyzer, or the like, has at least one Reloadable Word Recognizer whose reference value can be loaded by a trigger machine with a current acquired data sample while data is being acquired. In a second embodiment use... | 09/18/2007 |
| 7272762 | Method and apparatus for testing an ultrasound system A medical imaging system is provided that includes a plurality of circuit boards configured to be tested using boundary scan test vectors. A controller of the medical imaging system is configured to test the plurality of circuit boards. The controller is further con... | 09/18/2007 |
| 7271577 | Testing loop impedance in an RCCB electrical test circuit A method and apparatus for testing the loop impedance in residual current circuit breaker (RCCB) protected circuits is provided. An alternating test current is applied across the phase earth connections of a supply and a plurality of voltage samples are then taken a... | 09/18/2007 |
| 7268559 | Intelligent life testing methods and apparatus for leakage current protection An apparatus for testing the life of a leakage current protection device having a leakage current detection circuit. In one embodiment, the apparatus a trip mechanism state generator, a fault alarm generator, a ground fault simulation unit. In operation, the ground ... | 09/11/2007 |
| 7265555 | Loop impedance meter A loop impedance meter is provided for testing an AC electrical main supply incorporating a residual current device. The loop impedance meter includes an electrical control circuit for connecting a load resistance intermittently between the AC main supply terminal a... | 09/04/2007 |
| 7263174 | Predicting performance of telephone lines for data services A method characterizes a customer line for data transmission. The method includes measuring electrical properties of the customer line from a central location, identifying a line model from the measurements, and identifying a modem model for a modem selected for use... | 08/28/2007 |
| 7259565 | Testing an electrical switchgear system There is provided a method of testing an electrical switchgear system. A node in the electrical switchgear system monitors a power line signal and controls a breaker based on the power line signal. The method includes applying an analog signal to the node, and recei... | 08/21/2007 |
