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| Number | Title | Issue Date |
| 7571363 | Parametric measurement of high-speed I/O systems A phase comparator is used to test a device under test comprising an input/output (I/O) circuit by applying a signal to the device under test; extracting a phase signal from the phase comparator; and determining parametric information pertaining to the I/O circuit o... | 08/04/2009 |
| 7492302 | Analog-to-digital converter with reduced metastable errors In an analog-to-digital converter, an analog-to-digital conversion stage comprising a comparator and an analog residual signal generator. The comparator is operable to compare an analog input signal or a sample of the analog input signal with a threshold to generate... | 02/17/2009 |
| 7474404 | Voltage sensor capable of contactless voltage measurement A voltage sensor capable of single-point or simultaneous multi-point contactless voltage measurement has an electro-optic transducer, a surface plasmon resonance (SPR) and an optical system. The electro-optic transducer is operable to translate an electric field dep... | 01/06/2009 |
| 7450044 | Sub-harmonic image mitigation in digital-to-analog conversion systems A digital-to-analog conversion system comprises a digital input, a digital-to-analog converter and a modified digital signal generator. The digital-to-analog converter has a conversion frequency and is subject to a periodic error having a periodicity equal to that o... | 11/11/2008 |
| 7357018 | Method for performing a measurement inside a specimen using an insertable nanoscale FET probe A measurement inside a specimen is performed by providing a nanoscale FET probe comprising a cantilever element and a nanowire extending from the cantilever element. The nanowire is electrically connected to the cantilever element at at least one of the ends of the ... | 04/15/2008 |
| 7187215 | High dynamic range current-mode track-and-hold circuit Embodiments of the current-mode track and hold circuit comprise a cascode input stage, a dynamic biasing stage, a cascode output stage, and a switch operable to interconnect the input stage and the output stage. The input stage is connected to receive an input curre... | 03/06/2007 |
| 7085942 | Method and apparatus for defining an input state vector that achieves low power consumption in a digital circuit in an idle state The method defines an input state vector that achieves low power consumption when applied to the circuit inputs of a digital circuit in an idle state. In the method, independent determinations are performed. Each determination defines a respective set of the input s... | 08/01/2006 |
| 7034331 | Material systems for semiconductor tunnel-junction structures The tunnel junction structure comprises a p-type tunnel junction layer of a first semiconductor material, an n-type tunnel junction layer of a second semiconductor material and a tunnel junction between the tunnel junction layers. At least one of the semiconductor m... | 04/25/2006 |
| 6987433 | Film acoustically-coupled transformer with reverse C-axis piezoelectric material An embodiment of the acoustically-coupled transformer has first and second stacked bulk acoustic resonators (SBARs) each having a stacked pair of film bulk acoustic resonators (FBARs) with an acoustic decoupler between the FBARs. Each FBAR has opposed planar electro... | 01/17/2006 |
| 6983110 | Component characteristic tolerant and component alignment tolerant optical receiver The optical receiver comprises an optical input path, a light detector array, an optical converging element and an information signal generator. The light detector array includes light detectors and a light-sensitive surface. Each light detector generates an electri... | 01/03/2006 |
| 6975617 | Network monitoring system with built-in monitoring data gathering The network monitoring system comprises a network router with built-in monitoring data gathering. The network router includes channels through which data pass in packets. Each of the packets includes a packet header. The network router additionally includes a header... | 12/13/2005 |
| 6956423 | Interleaved clock signal generator having serial delay and ring counter architecture The interleaved clock generator generates N interleaved clock signals in response to an input clock signal. The interleaved clock generator comprises an interleaved clock generator of a first type for receiving the input clock signal and for generating M interleaved... | 10/18/2005 |
| 6946928 | Thin-film acoustically-coupled transformer The acoustically-coupled transformer includes first and second stacked bulk acoustic resonators (SBARs), each having a stacked pair of film bulk acoustic resonators (FBARs) with an acoustic decoupler between them. In one embodiment, the acoustic decoupler comprises ... | 09/20/2005 |
| 6921676 | Wafer-scale manufacturing method The wafer-scale assembly method provides first elements arrayed on a wafer with adjacent ones of the first elements separated by a predetermined spacing. Second elements are also provided. A spacing-defining jig is provided that includes recesses corresponding in si... | 07/26/2005 |
| 6862701 | Data communication system with self-test facility Self testing of a data communication system that includes a presettable scrambler and a complementary presettable descrambler is performed by presetting the presettable scrambler to a preset state. A seed payload field is scrambled using the presettable scrambler to... | 03/01/2005 |
| 6845115 | Coupled resonant cavity surface-emitting laser The CRCSEL comprises a single-mode optical gain structure and an optically-resonant cavity. The single-mode optical gain structure is structured to generate excitation light having a wavelength and a direction. The optically-resonant cavity is optically coupled to t... | 01/18/2005 |
| 6842557 | Optical switch incorporating stepped faceted mirrors An optical switch that includes optical paths organized into a set of M input optical paths and a set of N output optical paths, where at least one of M and N is greater than unity. The optical switch additionally includes a faceted mirror corresponding to each of t... | 01/11/2005 |
| 6835003 | Integrated packaging system for optical communications devices that provides automatic alignment with optical fibers The packaging system comprises a mechanical support, an insulating substrate and an electronic circuit. The mechanical support has a first support element that extends at a non-zero angle from a second support element. The insulating substrate has a first portion an... | 12/28/2004 |
| 6836574 | Optical domain optical signal sampling device The optical domain optical signal sampling device comprises an electrical sampling pulse source and an electrically-controlled optical modulator. The electrically-controlled optical modulator comprises electro-optical material, an optical waveguide located in the el... | 12/28/2004 |
| 6829273 | Nitride semiconductor layer structure and a nitride semiconductor laser incorporating a portion of same The nitride semiconductor layer structure comprises a buffer layer and a composite layer on the buffer layer. The buffer layer is a layer of a low-temperature-deposited nitride semiconductor material that includes AlN. The composite layer is a layer of a single-crys... | 12/07/2004 |
| 6795064 | Electro-optical material-based grey scale generating method A grey scale is generated by modulating light in response to an information signal using an electro-optical material. An analog sample is derived from the information signal, a drive signal is generated in response to the analog sample and the drive signal is applie... | 09/21/2004 |
| 6756552 | Multi-pole conductive liquid-based switch device The multi-pole, conductive liquid-based switch device includes an elongate passage, a first cavity, a second cavity, at least four electrodes disposed along the length of the passage, channels that extend from the passage, non-conductive fluid located the cavities a... | 06/29/2004 |
| 6754417 | Optical fiber tap capable of random placement along an optical fiber The optical fiber tap establishes optical communication between a branch optical fiber and a main optical fiber and includes a housing, a serpentine main channel and a branch channel. The main channel is defined in the housing and is shaped to accommodate part of th... | 06/22/2004 |
| 6730944 | InP based high temperature lasers with InAsP quantum well layers and barrier layers of Gax(ALIn)1-xP The invention provides a laser structure that operates at a wavelength of 1.3 μm and at elevated temperatures and a method of making same. The laser structure includes a quantum well layer of InAsP. The quantum well layer is sandwiched between a first barrier layer... | 05/04/2004 |
| 6718491 | Coding method and coder for coding packetized serial data with low overhead Blocks of input data that include control words and a packet of information words are received. The packet has a start preceded by ones of the control words and an end followed by others of the control words. The blocks are smaller than the packet. A determination o... | 04/06/2004 |
| 6717495 | Conductive liquid-based latching switch device The latching switch device includes a passage, a first cavity, a second cavity, a channel extending from each cavity to the passage, non-conductive fluid located the cavities, conductive liquid located in the passage, a first electrode, a second electrode and a latc... | 04/06/2004 |
| 6711195 | Long-wavelength photonic device with GaAsSb quantum-well layer The long-wavelength photonic device comprises an active region that includes at least one quantum-well layer of a quantum-well layer material that comprises InyGa1-yAsSb in which y≧0, and that additionally includes a corresponding number of b... | 03/23/2004 |
| 6711319 | Optical switch with converging optical element The optical switch comprises an input collimator, an output collimator, an input mirror, an output mirror and a converging optical element. The input collimator receives, collimates and outputs an input light beam. The input mirror is arranged to receive the light b... | 03/23/2004 |
| 6707411 | Analog-to-digital converter with on-chip memory The analog-to-digital conversion system comprises an analog-to-digital converter that includes a digital output, memory having a data input and a data output, an output port, an input data bus that extends from the digital output of the analog-to-digital converter t... | 03/16/2004 |
| 6695297 | Flexural device-based suspension having high compliance in a direction of travel and low compliance in a direction orthogonal thereto The flexural device-based suspension suspends a movable element with high compliance in a direction of travel and low compliance in a direction orthogonal to the direction of travel. The suspension comprises two flexural devices and a constraining element... | 02/24/2004 |
| 6690700 | Nitride semiconductor device A nitride semiconductor device that comprises a first layer, a second layer and a buffer layer sandwiched between the first layer and the second layer. The second layer is a layer of a single-crystal nitride semiconductor material including AlN and has a ... | 02/10/2004 |
| 6668674 | Pivot-less watt linkage, pivot-less watt linkage-based suspension and micromachined device incorporating same The pivot-less Watt linkage supports a first rigid element relative to a second rigid element and permits relative motion between the rigid elements. The pivot-less Watt linkage comprises an elongate, rigid, floating beam, an elongate first flexible beam,... | 12/30/2003 |
| 6657359 | Method of driving an electrostatic actuator with spatially-alternating voltage patterns An electrostatic actuator having a first member and a second member. The first member has a first opposed surface that includes an array of driven electrodes. The driven electrodes have a pitch pr. The second member has a second opposed surface... | 12/02/2003 |
| 6658212 | Polarization-independent, configurable optical multiplexer The frequency-selective optical multiplexer comprises, an LC polarization controller, a spectral demux/mux and input/output optics including two ports, a first optical path spatially separated from a second optical path and polarization-dispersive optics.... | 12/02/2003 |
| 6654153 | Semiconductor saturable absorber-based optical domain optical signal sampling device for sampling an optical signal The optical domain optical signal sampling device is for sampling an optical signal-under-test and comprises a semiconductor saturable absorber, an optical sampling pulse source, an optical signal input and a light detector. The optical sampling pulse sou... | 11/25/2003 |
| 6650638 | Decoding method and decoder for 64b/66b coded packetized serial data The frame of data that is decoded is one of a set of frames that represent a packet of information words, and that additionally represent coded control words preceding and following the packet. The frames each include a master transition and a payload fie... | 11/18/2003 |
| 6628680 | Photoconductive switch with integral wavelength converter The photoconductive switch comprises a laser that generates light having a first wavelength and a photoconductive switch element arranged to receive the light generated by the laser as incident light. The photoconductive switch element includes a photocon... | 09/30/2003 |
| 6614214 | Sampling element controlled by photoconductive switch-generated sampling pulses and sampling device incorporating same The sampling element comprises a DC sampling voltage source, a threshold sampling circuit and a photoconductive switching element. The threshold sampling circuit includes a signal-under-test input, a sampling pulse input and an IF signal output, and has a... | 09/02/2003 |
| 6586269 | Photo-conductive relay and method of making same A photoconductive relay that comprises a light-emitting device, a photoconductive switching element and columns of a conductive, fusible material. The light-emitting device and the photoconductive switching element respectively include including a light-e... | 07/01/2003 |
| 6580849 | Optical switch incorporating stepped faceted mirrors An optical switch that includes optical paths organized into a set of M input optical paths and a set of N output optical paths. The optical switch additionally includes a faceted mirror corresponding to each of the M input optical paths and including N f... | 06/17/2003 |
