Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 8179144 | Cable tester A network device including a physical layer (PHY) device and an autonegotiation module. The PHY device is configured to interface with N cable pairs, where N is greater than 1. The PHY device includes a cable test module configured to diagnose a short circuit in one... | 05/15/2012 |
| 8049512 | Circuit board with embedded components and manufacturing and measuring method thereof A circuit board with embedded components includes a plurality of embedded components and at least one transmission line electrically connected to at least one of the embedded components and having a terminal circuit. Therefore, a measuring device is used to be elect... | 11/01/2011 |
| 8013614 | System and method for enhanced accuracy in cable diagnostics of cable length A system and method for enhanced accuracy in cable diagnostics of cable length. Conventional cable diagnostics such as time domain reflectometry can be used to determine cable length. This conventional technique can have accuracy limitations in certain situation suc... | 09/06/2011 |
| 7994797 | Implementing a coded time domain transmission distance meter A method and circuit for implementing a coded time domain transmission distance meter, and a design structure on which the subject circuit resides are provided. A first transmitter module connected to a cable at a first point or power outlet, generates and sends a t... | 08/09/2011 |
| 7986147 | Fast cable tester A physical layer (PHY) device including a first transmitter, a first analog-to-digital converter (ADC) module, and a control module. The first transmitter is configured to transmit a first pulse on a first conductor of a first pair of conductors of a cable. The firs... | 07/26/2011 |
| 7982467 | Built-in test for high-speed electrical networks An apparatus for providing auxiliary signals on a high speed electrical signal network is provided such that the auxiliary signals may be used for independent monitoring or communication of monitored information without affecting data or bit error rates for the prim... | 07/19/2011 |
| 7965087 | Method for ascertaining and monitoring fill level of a medium in a container A method for ascertaining and monitoring the fill level of a medium in a container the method utilizes a fill-level measuring device, wherein, according to the technique of time-domain reflectometry, high-frequency measuring signals are guided via at least one measu... | 06/21/2011 |
| 7960976 | Advanced time domain reflection cable testing A cable testing system that tests cable includes a pulse generation module that transmits a first pulse on a first communications channel of the cable. A sampling module waits a predetermined time period after the pulse generation module transmits the first pulse an... | 06/14/2011 |
| 7940056 | Time-domain reflectometry The present invention provides a method of time domain reflectometry including transmitting a test signal along a cable under test from one end and sensing and recording a reflected signal from the cable at that end, using the recorded, reflected signal to estimate ... | 05/10/2011 |
| 7924023 | Method and apparatus for measuring data rates A method, computer readable storage medium and apparatus for measuring data rates is disclosed. A method that incorporates the teachings of the present disclosure may include, for example, submitting a signal over a cable from a Time Domain Reflectometry (TDR) eleme... | 04/12/2011 |
| 7906973 | Cable tester A physical layer module (PHY) of a network device includes a control module and a cable-test module. The control module selectively generates a cable-test enable signal to test a cable including four pairs of twisted wire. The cable-test module tests the cable based... | 03/15/2011 |
| 7893695 | Apparatus, method, and computer program for obtaining a time-domain-reflection response-information An apparatus for obtaining a time-domain-reflection response-information has a signal driver adapted to apply two pulses of different pulse lengths to a TDR port in order to excite a first TDR response signal corresponding to a first pulse and a second TDR response ... | 02/22/2011 |
| 7884615 | Cable tester A network interface includes a physical layer (PHY) device that provides an interface to a cable. The PHY device includes an autonegotiation module that selectively performs autonegotiation to establish a link with a link partner based on link parameters and a cable... | 02/08/2011 |
| 7834638 | Differential transmission circuit, disk array apparatus, and output signal setting method To provide a signal transmitting/receiving apparatus etc. where a cable length can be measured by using a general-purpose cable, without using an interface. A differential transmission circuit by the present invention includes a signal output circuit sending a high-... | 11/16/2010 |
| 7830152 | System and method for enhanced accuracy in cable diagnostics of cable length A system and method for enhanced accuracy in cable diagnostics of cable length. Conventional cable diagnostics such as time domain reflectometry can be used to determine cable length. This conventional technique can have accuracy limitations in certain situation suc... | 11/09/2010 |
| 7808247 | Fast cable tester A physical layer (PHY) device of a network device includes a signal generator module that generates a first test signal and that transmits the first test signal on a first conductor of a first pair of a cable at time T1, an analog-to-digital converter (ADC) m... | 10/05/2010 |
| 7705606 | Non-contact cable state testing A method of determining the state of a cable including at least one electrical conductor, uses a generated test signal and applies it to at least one conductor by a non-contact coupling transmitter. The resulting signal is propagated along the at least one conductor... | 04/27/2010 |
| 7705607 | Diagnostic methods for electrical cables utilizing axial tomography The present disclosure is directed to cable diagnostic test methods, systems and apparatus that advantageously utilize “standing wave”principles to facilitate the identification and location of defect(s) along a power cable. The disclosed methods/systems are eff... | 04/27/2010 |
| 7679371 | Advanced time domain reflection cable testing A cable testing system that tests cable includes a pulse generation module that transmits a first pulse on a first communications channel of the cable. A sampling module waits a predetermined time period after the pulse generation module transmits the first pulse an... | 03/16/2010 |
| 7642790 | Systems and methods for testing conductive members employing electromagnetic back scattering A system or method of analyzing a conductive member for the presence an anomaly. A conductive pipe member is analyzed for the presence an anomaly the electromagnetic properties of which are non-linear. The electromagnetic properties of the pipe member at the anomaly... | 01/05/2010 |
| 7639022 | Method and apparatus for measuring data rates A method and apparatus for measuring data rates is disclosed. An apparatus that incorporates teachings of the present disclosure may include, for example, a diagnostic system having a Time Domain Reflectometer (TDR) element that submits a signal over a cable and det... | 12/29/2009 |
| 7622930 | Method for inspecting transmission line characteristic of a semiconductor device using signal reflection measurement A method for inspecting a semiconductor device includes establishing a first circuit state in which electrical conduction through at least one of branch transmission line portions is established and electrical conduction through at least one other branch transmissio... | 11/24/2009 |
| 7589535 | Network device detection using frequency domain reflectometer A system for identifying elements in a cable network utilizing frequency domain reflectometry includes initial filtering stages to remove noise, second and third harmonics and side lobes, and subsequent identification stages to identify and display various elements,... | 09/15/2009 |
| 7548067 | Methods for measuring capacitance Methods for determining capacitance values of a metal on semiconductor (MOS) structure are provided. A time domain reflectometry circuit may be loaded with a MOS structure. The MOS structure may be biased with various voltages, and reflectometry waveforms from the a... | 06/16/2009 |
| 7532011 | Method and apparatus for time domain reflection test of transmission line The present invention relates to a method and an apparatus for TDR (time domain reflection) test of a transmission line. In the method, first, a test signal meeting the test requirement of self-correlation and mutual-correlation is determined and transmitted in the ... | 05/12/2009 |
| 7439747 | Location of high resistance ground faults on buried power-cables The location of high resistance ground faults within buried co-axial power cables can be detected by transmitting a combined signal along the cable at a primary frequency of 0.718 Hz and a primary amplitude in the order of 4,500 volts peak to peak. This combined sig... | 10/21/2008 |
| 7414410 | Cable diagnostics using time domain reflectometry and application using the same A system and method are used to determine connectivity and/or cable faults of a cable. A signal transmitting and receiving system is coupled to the cable. An analog-to-digital converter (ADC) coupled to the signal transmitting and receiving system. A TDR system coup... | 08/19/2008 |
| 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 |
| 7403018 | Cable tester A cable tester that tests cable and that determines a cable status includes a pretest module that senses activity on pairs of the cable and that selectively enables testing based on the sensed activity. A test module is enabled by the pretest module, transmits a tes... | 07/22/2008 |
| 7400151 | Connector crosstalk and return loss cancellation A device for testing data communications cabling. The device consists of a signal generator that can generate a test signal to test the data communications cabling and a receiving component that can receive a reflected signal produced by reflection of the test signa... | 07/15/2008 |
| 7383133 | Diffuse seismic imaging systems and methods Systems and methods are disclosed to construct subsurface images from diffuse seismic energy. Various disclosed system embodiments include multiple seismic sensors that each convert received seismic energy into one or more seismic signals. One or more processor comb... | 06/03/2008 |
| 7375532 | Cable tester A physical layer device comprises a first port adapted to communicate with one end of a cable. A second port is adapted to communicate with an opposite end of a cable. A cable tester communicates with the first and second ports and selectively tests the cable to det... | 05/20/2008 |
| 7375602 | Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin | 05/20/2008 |
| 7368919 | Wireless portable automated harness scanner system and method therefor A method for testing an installed wiring harness is provided. The method comprises providing a signal source testing module at a first node in the wiring harness and a measurement termination testing module at a second node in the wiring harness. A central managemen... | 05/06/2008 |
| 7370106 | Network revision system with local system ports A revision system for a network having a plurality of data ports, pairs of the data ports being connectable by a patch cord to place the pairs of data ports into communication with each other, the revision system including a computer processor, a scanner in communic... | 05/06/2008 |
| 7366623 | Method and apparatus for characterizing a load on a data line A method for characterizing a load on a data line includes the steps of: (A) Applying at least three successive voltages to the data line. Each respective odd-numbered successive voltage of the at least three successive voltages has substantially a first voltage val... | 04/29/2008 |
| 7358745 | Cable tester A physical layer device comprises a first transceiver that selectively communicates with a cable medium. A detector detects a power over Ethernet (POE) device. A switching device selectively provides power from a power supply over the cable medium when the detector ... | 04/15/2008 |
| 7355416 | Measurement of cable quality by power over ethernet A method of determining impedance comprising: supplying power to a powered device from a power sourcing equipment at a first current limited level, Ilim1; measuring, at a plurality of times a voltage associated with the output of the power sourcing equipm... | 04/08/2008 |
| 7355412 | Remote fault monitoring system Remote indication devices are each a combination of electrical parameter measurement circuitry, a CPU, and a communication device. Each remote indication device is electrically or electromagnetically coupled to a power distribution circuit conductor to monitor the c... | 04/08/2008 |
| 7337079 | Time-frequency domain reflectometry apparatus and method An apparatus and method for high-resolution reflectometry that operates simultaneously in both the time and frequency domains, utilizing time-frequency signal analysis and a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time loc... | 02/26/2008 |
