Patents Assigned to Agilent Technologies
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Patent number: 6807336Abstract: An optical lens is described that couples laser light into an optical fiber, that launches light such that the center and core-cladding of the fiber is avoided, that prevents optical feedback to the laser light source, and that can be economically manufactured, either as singles or arrays, in high volume. The lens (10′) has at least one end surface (25′) of a shape that is the combination of a conic component, a spiral component and a cone component (55). The conic component can be one of hyperbolic, parabolic or spherical shape. The other end surface (30′) is typically of a convex hyperbolic shape. The lens is provided in a housing or can be integrated with a housing having one end coupling for coupling to a laser source (15) and a further end coupling to receive and retain a free end of an optical fiber (20).Type: GrantFiled: November 12, 2002Date of Patent: October 19, 2004Assignee: Agilent Technologies, Inc.Inventor: Adrianus J. P. van Haasteren
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Patent number: 6806877Abstract: Eye diagram masks may be specified by physical parameters directly related to waveform parameters in place of geometric representations, resulting in a more user friendly way to create custom eye masks. NRZ eye masks may be specified by the user using five parameters while RZ eye masks may be specified by the user using seven parameters.Type: GrantFiled: December 18, 2001Date of Patent: October 19, 2004Assignee: Agilent Technologies, Inc.Inventor: Chenjing Fernando
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Patent number: 6806746Abstract: A direct frequency synthesizer provides an output signal derived from a high frequency reference signal that is frequency divided and mixed to satisfy the coarse step synthesis requirements of an offset loop synthesizer. The absence of a VCO within the direct frequency synthesizer, provides the direct frequency synthesizer with lower phase noise than a typical PLL-based coarse step synthesizer. Though applicable to a variety of types of synthesizers and signal generators, the direct frequency synthesizer provides especially advantageous noise performance when used to generate an offset signal for an offset loop synthesizer of the first local oscillator of a spectrum analyzer, where the second local oscillator of the spectrum analyzer provides the reference signal for the direct frequency synthesizer.Type: GrantFiled: July 31, 2003Date of Patent: October 19, 2004Assignee: Agilent Technologies, Inc.Inventor: Wing J. Mar
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Patent number: 6806484Abstract: An edge detector with sub-micron accuracy. The edge detector comprises two single mode optical fibers with an optical path between them. One fiber is coupled to a laser light source, and creates a light beam. The other fiber is coupled to an optical power detector. The optical power reaching the optical power detector is determined by how much of the light beam is obscured by an object. Thus the position of the edge of the object may be determined from the optical power measured by the detector. The edge of an object may be positioned automatically according to the optical power measured by the detector.Type: GrantFiled: August 22, 2001Date of Patent: October 19, 2004Assignee: Agilent Technologies, Inc.Inventors: Edward Steketee, John Bernard Medberry, Benno Guggenheimer
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Patent number: 6807217Abstract: A method and an apparatus for tuning a laser includes creating a laser with a path between a cavity end element and a tuning element of an external cavity, both being a high reflective or semitransparent mirror, selecting at least one longitudinal mode of the laser by introducing a dispersion element in the path of the laser, rotating the tuning element about a pivot axis theoretically defined by the intersection of the surface planes of the cavity end element, the dispersion element and the tuning element to tune the laser. The method and apparatus also provides for moving the dispersion element along such a predetermined path to at least partly compensate an inclination between the real position of the pivot axis and the theoretically defined position.Type: GrantFiled: March 19, 2002Date of Patent: October 19, 2004Assignee: Agilent Technologies, Inc.Inventor: Emmerich Mueller
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Publication number: 20040204523Abstract: A medium for use in electrophoresis comprising N-methylurea and a polyacrylamide gel. In particular, the medium is used in a system and method of electrophoretic separation comprising the introduction of a sample to the medium, and applying an electric field across the medium.Type: ApplicationFiled: April 10, 2003Publication date: October 14, 2004Applicant: Agilent Technologies, Inc.Inventor: Martin Kratzmeier
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Publication number: 20040201510Abstract: A single end to differential signal converter comprising a low-frequency transmission step, which mixes the direct current and low-frequency components of single-ended signals with in-phase voltage signals to generate low-frequency signals, and a high-frequency transmission step, which mixes the high-frequency component of these single-ended signals and these low-frequency transmission signals to generate differential signals.Type: ApplicationFiled: March 25, 2004Publication date: October 14, 2004Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Mamoru Tamba
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Publication number: 20040202581Abstract: In a device to operate and handle a laboratory microchip to chemically process or analyze substances, the microchip is on a chip holder (41) that is part of a first assembly (42). The first assembly (42) also has an optical device (43) for contactless detection of the results of the chemical processes carried out on the microchip. A supply device (56) required to operate the microchip is in a module releasably connected to a second assembly (44, 55). In particular, the second assembly (44, 55) has an intermediate carrier (57) that is releasably connected to the supply device (56). The intermediate carrier has continuous electrical paths (60) or connecting channels that can bridge electrodes (58) or supply channels of the supply device (56) and the assigned counterelectrodes (53) of the microchip. There are correspondingly connecting lines (61) to bridge the supply of materials.Type: ApplicationFiled: April 29, 2004Publication date: October 14, 2004Applicant: Agilent Technologies, Inc.Inventor: Manfred Berndt
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Patent number: 6803097Abstract: The present invention is a film and method for making the same. The film includes a plurality of particles having a desired film property that are entrapped in a matrix of linkage polymer molecules. The linkage polymer molecules ionically bind to the particles. The linkage polymer molecules are electrochemically polymerizable in a solvent. The particles are insoluble in the solvent. The film is prepared by providing an electrode and a solution of the linkage polymer molecules in which the particles are suspended. An electrical potential is provided between the solution and the electrode in temporal sequence that causes the linkage polymer molecules to polymerize in the vicinity of the electrode thereby entrapping the particles.Type: GrantFiled: December 19, 2002Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Daniel B. Roitman, Seiji Inaoka
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Patent number: 6804633Abstract: The time needed to perform an eye diagram measurement is minimized by initially randomly investigating the (X, Y)i that lie on a “starting” line crossing the sample space and expected to intersect any eye diagram. This finds a location on the eye diagram. Then the eye diagram is traversed as it is discovered by investigating nearest neighbors of locations found to belong to the eye diagram. Two arrays E and L of bits are established. The bits of E represent “eligible” (X, Y)i, while those of L represent “likely” (X, Y)i. At the very start of the measurement all bits in the eligible array E are set and all those in the likely array L are cleared, except that the starting line is established by setting in L and clearing in E locations for the corresponding (X, Y)i. Thereafter, locations in L that have 1s are measured in a randomly selected order.Type: GrantFiled: January 31, 2003Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventor: Richard A Nygaard, Jr.
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Patent number: 6803774Abstract: A meter for measuring the root-mean-squared potential of an AC signal characterized by a frequency f is disclosed. The meter includes first and second capacitors. The AC signal is applied to the first capacitor, which includes first and second plates separated by a distance that depends on the root-mean-squared potential of the AC signal, but not on changes in the AC signal that occur over a time of 1/f. The second capacitor has first and second plates separated by a distance that depends on the separation of the first and second plates in the first capacitor. A detection circuit measures the capacitance of the second capacitor. The first plate of the first capacitor is preferably connected to the first plate of the second capacitor by a non-conducting mechanical link.Type: GrantFiled: September 23, 2002Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventor: Chul Hong Park
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Patent number: 6804141Abstract: A FeRAM includes a reference voltage calibration circuit that evaluates FeRAM cells and selects reference voltages for reading the FeRAM cells. Calibration of the reference voltage can be performed dynamically during normal operation of the FeRAM so that the reference voltage tracks changes in FeRAM cell performance that may be associated with temperature or aging effects. Dynamic calibration during normal use eliminates the need for a reference voltage calibration process during manufacture of the memory. The calibration circuit can further be connected to redundancy circuitry that replaces FeRAM cells that the calibration circuit determines are weak.Type: GrantFiled: May 20, 2003Date of Patent: October 12, 2004Assignees: Agilent Technologies, Inc., Texas Instruments, Inc.Inventors: Juergen T. Rickes, Yacoub Mustafa, Hugh P. McAdams
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Patent number: 6804807Abstract: An interface model of a ground-signal-ground (“GSG”) probe is included when simulating an electronic circuit that develops unbalanced ground currents. The interface model of the GSG probe is used to obtain simulated results that more closely match data measured from the electronic device when using the GSG probe.Type: GrantFiled: February 28, 2003Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Tiberiu Jamneala, Paul D. Bradley, David A. Feld
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Patent number: 6804059Abstract: A tunable optical filter utilizes multiple electroholographic (EH) gratings with different center wavelengths to filter an optical signal over a wide wavelength range. The EH gratings are connected such that an input optical signal passes through at least one of the EH gratings. The EH gratings are activated and tuned by electrode pairs that are controlled through a voltage controller. The tunable optical filter is coarse tuned by activating the EH gratings having a wavelength range that includes the center wavelength that is to be filtered and fine tuned by adjusting the voltage that is applied across the activated EH gratings.Type: GrantFiled: December 27, 2001Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Ali R. Motamedi, Douglas M. Baney, Jeffrey N. Miller, Marshall T. Depue
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Patent number: 6804197Abstract: Network probe circuitry is disclosed that is comprised of a host interface system, a line interface system, a memory controller, and a memory. The memory controller receives clock signals from the host interface system and the line interface system. The memory controller grants one of the interface systems access to the memory and selects the clock signal corresponding to that interface system. The memory controller then transfers the selected clock signal to the memory. The interface system with access to the memory communicates with the memory based on the selected clock signal. The memory controller is advantageously faster than prior systems and can handle large data bursts.Type: GrantFiled: October 24, 2000Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Tim Warren Henry, Rodney Ray Beeston
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Patent number: 6803835Abstract: A component that includes a first structure that is integrated with a second structure. The first structure is a lumped balanced to unbalanced circuit (balun) and the second structure is a resonator-based filter. The function of the balun is to move a signal from a differential form to a single ended form or from a single ended form to a differential form. The component has an area that is comparable to the area needed to implement the balun alone. However, the component now provides a filter function. Preferably, the substrate of the first structure also acts as a substrate for the second structure.Type: GrantFiled: August 30, 2001Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventor: Michael L. Frank
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Patent number: 6804436Abstract: An eye-safe optical fiber transmitter unit comprises a laser, an optical port, an optical fiber stub with a fiber core carrying optical radiation emitted by the laser to the optical port. The core is an index-guided core surrounded by cladding. Laser radiation is focussed to a spot on a fiber stub entrance face to increase the coupling efficiency of optical radiation into the fiber core and decrease the radiation coupling efficiency of radiation into the surrounding cladding. The coupling efficiency into the core is a maximum at a particular orientation of the entrance face with respect to a focus axis when the focus spot is on the entrance face. The entrance face is not oriented at this particular orientation, but is angled and/or rotated away from the particular orientation to reduce optical coupling efficiency into the fiber core and cladding.Type: GrantFiled: November 29, 2002Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventor: David Healy
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Patent number: 6803842Abstract: A piezoelectric optical relay array having one or more array elements. Each array element contains a transparent mirror housing, located at the intersection of two optical paths. A solid slug is moved within a channel passing through the transparent mirror housing by the action of piezoelectric elements. A surface of the solid slug is wetted by a liquid metal to form a reflective surface. The solid slug is moved in or out of the transparent mirror housing to select between the optical paths. When the solid slug is within the transparent mirror housing, an incoming optical signal is reflected from the reflective surface of the liquid metal. The liquid metal adheres to wettable metal surfaces within the channel to provide a latching mechanism.Type: GrantFiled: April 14, 2003Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Marvin Glenn Wong, Arthur Fong
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Patent number: 6804271Abstract: Light emission methods and light emission devices are described including method and devices capable of emitting light at a plurality of controllable wavelengths. According to one aspect, a light emission method includes providing a control signal and emitting light using a laser operating in a plurality of polarization states. The polarization state of the laser is adjusted responsive to the control signal and the wavelength of the light emitted using the laser is adjusted responsive to the adjustment of the polarization state of the laser.Type: GrantFiled: November 6, 2001Date of Patent: October 12, 2004Assignee: Agilent Technologies, Inc.Inventors: Ken Nishimura, Scott Corzine, Frank H. Peters, Gary Gordon
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Publication number: 20040198333Abstract: A wireless communication system and method therefore include a processor programmed with a protocol of a telecommunications provider downloaded from a network, so as to operate the wireless communication system in accordance with the protocol corresponding to a geographical region. The processor includes input and output pins arranged to provide a standard connectivity to electrical components in the wireless communication system. A slot in the wireless communication system receives the processor.Type: ApplicationFiled: June 21, 2002Publication date: October 7, 2004Applicant: Agilent Technologies, Inc.Inventor: Farouk M. Zanaty
