Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8089294 | MEMS probe fabrication on a reusable substrate for probe card application A Micro-Electro-Mechanical-Systems (MEMS) probe is fabricated on a substrate for use in a probe card. The probe has a bonding surface to be attached to an application platform of the probe card. The bonding surface is formed on a plane perpendicular to a surface of ... | 01/03/2012 |
| 8058887 | Probe card assembly with interposer probes A probe test card assembly for testing a device under test includes interposer probes to connect a printed circuit board to a substrate. The probe test card assembly includes a printed circuit board, a substrate and a substrate holder. A plurality of test probes is ... | 11/15/2011 |
| 8049524 | Method for detecting component defects of an analog signal processing circuit, especially for a measurement transmitter A method for detecting component defects of an analog signal processing circuit, especially for a measurement transmitter. A test signal TS is generated at a first test point TP1 and an associated response signal RS tapped at a second test point TP2 an... | 11/01/2011 |
| 7994807 | Built-in test circuit for testing AC transfer characteristic of high-speed analog circuit An analog device under test circuit and a built-in test circuit for testing an AC transfer characteristic of the analog device under test are fabricated on an integrated circuit. The built-in test circuit includes an amplitude detector that detects the amplitude of ... | 08/09/2011 |
| 7862944 | Method for detection and diagnosis of isolation faults in fuel cell hybrid vehicles An isolation fault detection system for detecting isolation faults in a fuel cell system associated with a fuel cell hybrid vehicle. The isolation fault detection system measures a stack voltage potential, a positive fuel cell voltage potential, a negative fuel cell... | 01/04/2011 |
| 7714586 | Control unit and control device comprising the control unit A control device includes a control unit and an evaluation unit that is configured to generate a control signal by which the control unit is impinged upon. The control unit is provided with a voltage source and a reference resistor that can be connected in series to... | 05/11/2010 |
| 7554332 | Calibration apparatus, calibration method, testing apparatus, and testing method There is provided a calibration apparatus for calibrating an electronic device that outputs a demodulation signal in which a modulated component of a signal to be tested or evaluated is demodulated, having a DC component detecting section for detecting a DC componen... | 06/30/2009 |
| 7433793 | Error detection apparatus and method and signal extractor A modulated voltage signal modulated at a predetermined frequency f0 is supplied to an integrated circuit under test to be tested set at an arbitrary stationary point, and an observation signal containing information on power supply current flowing through th... | 10/07/2008 |
| 7429917 | LED aviation warning light with fault detection An embodiment of an LED warning light includes a plurality of LED banks, each including a series of light emitting diodes. LED failure in one or more banks can result in a warning light that appears to be functional, but may not meet relevant standards for light pro... | 09/30/2008 |
| 7425704 | Inspection method and apparatus using an electron beam An inspection method and apparatus irradiates a sample on which a pattern is formed with an electron beam, so that an inspection image and a reference image can be generated on the basis of a secondary electron or a reflected electron emitted by the sample. An abnor... | 09/16/2008 |
| 7425896 | Tag testing device, tag testing method, and tag testing program A tag testing device uses an infrared camera to take an image of a plurality of radio frequency identification tags, compares the image with a stored standard tag pattern image storage, and detects defective tags based on the comparison. A radio wave transceiver bul... | 09/16/2008 |
| 7421249 | Read-write processing apparatus and method for RFID tag A read-write processing apparatus communicates with an RFID tag provided with a semiconductor memory to exchange commands and responses through antenna coils. A condition under which only a carrier wave is transmitted is set prior to a communication with the RFID ta... | 09/02/2008 |
| 7415368 | Intelligent electronic device having network access An electric power meter is disclosed. The meter comprises means for digitally sampling voltage and current. The meter further comprises means for storing the digitally sampled voltage and current. The meter further comprises means for performing power calculations u... | 08/19/2008 |
| 7411404 | Apparatus, system, and method for detecting an electrical short condition in a dynamoelectric machine A system, apparatus, and method (10) for detecting an electrical short condition in a dynamoelectric machine are described. The method includes determining an operating parameter of a dynamoelectric machine (14) responsive to at least one output signal... | 08/12/2008 |
| 7411403 | Electrical switching apparatus and method employing active acoustic sensing to detect an electrical conductivity fault of a power circuit A circuit breaker detects a loose electrical connection condition of a power circuit. The circuit breaker includes first and second lugs, first and second acoustic couplers acoustically coupled to the power circuit, separable contacts electrically connected in serie... | 08/12/2008 |
| 7404119 | Circuit for testing power down reset function of an electronic device A circuit for testing a power down reset function of an electronic device includes a reference power source (Vref), a first variable resistor (R1) with one end connected to the reference power source, a second variable resistor (R2), and a jumper (1... | 07/22/2008 |
| 7400152 | Diagnostic method for monitoring a plug-in connection A diagnostic method for monitoring at least one plug-in connection (4) to an antenna (1), a diagnostic signal is supplied via the antenna signal path toward the antenna (1). The diagnosis signal bypasses an active circuit (31) in the ante... | 07/15/2008 |
| 7382272 | System, a tool and method for communicating with a faulted circuit indicator using a remote display Provided is a system, a tool and a method for communicating with a faulted circuit indicator (FCI), the faulted circuit indicator including a detection circuit for monitoring an electrical conductor of a power system. The system includes a remote display mounted in ... | 06/03/2008 |
| 7373263 | Analog-type measurements for a logic analyzer A logic analyzer that performs analog-type measurements on digital data includes circuitry in its acquisition system that is programmable to search through acquired data to detect analog-type signal characteristics. In a first embodiment, the logic analyzer includes... | 05/13/2008 |
| 7358776 | Signal detection circuit and signal detection method It is intended to provide a signal detection circuit and a signal detection method capable of preventing influences of variations in transistor characteristics, occurrence of yield degradations of the signal detection circuit and capable of detecting differential in... | 04/15/2008 |
| 7352289 | System and method for detecting the connection state of a network cable connector A method for detecting a network cable connection state is disclosed. The method includes detecting a change of connection state of a connector using a sensor that resides in the connector and generating cable connection state information from the information suppli... | 04/01/2008 |
| 7340437 | Circuit configuration and method for identifying error situations in interconnected systems The circuit configuration according to the invention comprises an electrical signal line loop, several partial systems connected thereto, which evaluate the state of the signal line loop, wherein a first selectable switching means is looped in between a first end of... | 03/04/2008 |
| 7340359 | Augmenting semiconductor's devices quality and reliability A method for augmenting quality or reliability of semiconductor units, including providing few populations of semiconductor units that are subject to quality or reliability testing. The populations include few quality or reliability fail candidate populations and ot... | 03/04/2008 |
| 7336627 | Digital subscriber line transmission method, apparatus and system A digital subscriber line transmission (xDSL) system includes a transmitting side which transmits training symbols by adding some data that is contained in a training symbol sequence onto at least one of the beginning and the end of this symbol sequence and then tra... | 02/26/2008 |
| 7337081 | Metering device with control functionality and method thereof A metering device of a power substation and method are provided for operating on a secondary analog waveform output by a transformer assembly receiving a primary waveform. The method includes stepping down the secondary waveform and generating a corresponding output... | 02/26/2008 |
| 7336066 | Reduced pin count test method and apparatus Testing of an electronic device is carried out by combining power and signal delivery on a single pair of wires. The power delivery is decoupled from the signal delivery, using inductors, so the device power supplied does not interfere with the test signals delivere... | 02/26/2008 |
| 7325180 | System and method to test integrated circuits on a wafer A system to test integrated circuits on a wafer may include a transceiver formed on the wafer. The system may also include an antenna system couplable to the transceiver. The transceiver may be formed in one of a scribe line on the wafer, a chip on the wafer or on a... | 01/29/2008 |
| 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 |
| 7317316 | Apparatus and method for measuring the insulation resistance of a fuel cell system A measuring device to measure the insulation resistance (Riso) of a fuel cell system with respect to an electrical ground point comprises a resistor arrangement—formed by a series connection of reference resistors—between two load-current lines of the fuel cell ... | 01/08/2008 |
| 7317400 | Self light emitting type display module, electronic appliance loaded with the same module and verification method of faults in the same module Reverse bias voltage VM is applied to any one of self light emitting elements arranged on a light emitting panel 1 under detection mode. Current corresponding to weak current flowing to the element is supplied to a transistor Q3 by the operation of a c... | 01/08/2008 |
| 7304829 | Apparatus and method for filtering current sensor output signals An electronic filter for filtering the output signal of a current sensor of a circuit breaker is disclosed. The current sensor has an output signal characteristic similar to that of a Rogowski coil output signal characteristic that includes a third harmonic noise co... | 12/04/2007 |
| 7286953 | Device testing automation utility and method Various apparatuses, methods, computer programs, and other systems are disclosed for facilitating testing of a module. In embodiment, a method is provided that comprises the steps of creating a plurality of tasks in a computer system, each of the tasks comprising a ... | 10/23/2007 |
| 7282925 | Apparatus to facilitate functional shock and vibration testing of device connections and related method An apparatus and associated method are disclosed for facilitating the testing of device connections, including functional shock and vibration testing of peripheral card slots or any other desired connector interface. In part, a power supply located on the peripheral... | 10/16/2007 |
| 7277517 | Method for achieving symbol alignment to a pre-existing ADSL data exchange A method for determining symbol boundaries in an ADSL modem, comprising receiving multi-frequency modulated signals in the time domain, wherein the multi-frequency modulated signals include a pilot signal at a pilot frequency. Performing a time-to-frequency transfor... | 10/02/2007 |
| 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 |
| 7265556 | System and method for adaptable testing of backplane interconnections and a test tool incorporating the same The present invention provides a system for, and method of, adaptable testing of backplane interconnections. In one embodiment, the system includes a board detector configured to determine a relative arrangement of a plurality of hardware boards populating positions... | 09/04/2007 |
| 7260117 | Synchronizing initial handshake in ADSL annex C to TTR Techniques for establishing TTR indication in ADSL Annex C based communication systems are disclosed. The techniques enable, for example, hyperframe alignment and synchronized initialization procedures (e.g., G.hs). ... | 08/21/2007 |
| 7250748 | Integrated anti-differential current sensing system The present invention is directed to a system for current sensing including a first Hall effect sensor and a second Hall effect sensor constructed to provide feedback indicating current flow through a conductor susceptible to external magnetic flux. A housing is con... | 07/31/2007 |
| 7242291 | Arc fault circuit interrupter test circuit and test board A tester for an arc fault circuit interrupter that can selectively simulate and apply electrical arc faults and nuisance loads to at least one device under test (DUT). The tester includes a power supply, a test controller, and test circuitry coupleable to a DUT. AC ... | 07/10/2007 |
| 7228248 | Test apparatus, timing generator and program therefor There is provided a test apparatus including a PLL circuit for generating a strobe signal of which the timing is shifted according to a given delay control voltage, a variable delay circuit being provided divergently from a path connecting the PLL circuit and the ti... | 06/05/2007 |
