Patents Assigned to Agilent Technologies
  • Differential self-test of input/output circuits
    Patent number: 6918073
    Abstract: An electronic circuit for enabling differential tests. In representative embodiments, the electronic circuit includes a first differential receiver having first and second inputs and an output, a first switch having first and second data inputs, a control input, and an output, and a first control device having an output. The first input of the first differential receiver is connected to a first contact and to a first single ended receiver input, and the second input of the first differential receiver is connected to a second contact and to a second single ended receiver input. The first data input of first switch is connected to first single ended receiver output, and the second data input of first switch is connected to first differential receiver output. The first control device output is connected to first switch control input.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: July 12, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: David L Linam, Christopher George Helt, Gayvin E Stong
  • Optical cache memory
    Patent number: 6917739
    Abstract: An optical memory having an input port for receiving an input optical signal to be stored in the optical memory is disclosed. A portion of the optical signal is coupled to a storage loop for storing optical signals by a coupler that transfers a portion of the input optical signal to the storage loop. An optical signal stored in the storage loop is output by coupling a portion of that optical signal to a first external optical waveguide. The storage loop includes a semiconductor optical amplifier for amplifying the signals stored in the storage loop to compensate for losses incurred by those signals in traversing the storage loop. A plurality of such optical memories can be combined to form a larger memory that includes a reconditioning circuit that resets the amplitude of the optical signals to a value that depends on the amplitude of the optical signals.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: July 12, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Datong Chen
  • Method for linear mRNA amplification
    Patent number: 6916633
    Abstract: Methods for linearly amplifying mRNA to produce antisense RNA are provided. In the subject methods, mRNA is converted to double-stranded cDNA using a promoter-primer having a poly-dT primer site linked to a promoter sequence so that the resulting double-stranded cDNA is recognized by an RNA polymerase. The resultant double-stranded cDNA is then transcribed into antisense RNA in the presence of a reverse transcriptase that is rendered incapable of RNA-dependent DNA polymerase activity during this transcription step. The subject methods find use a variety of different applications in which the preparation of linearly amplified amounts of antisense RNA is desired. Also provided are kits for practicing the subject methods.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: July 12, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Karen W. Shannon
  • Devices and methods for fluid mixing
    Patent number: 6916113
    Abstract: A device for mixing fluids is provided. The device is comprised of a substrate containing a first mixing feature that terminates at a first opening located on a surface of the substrate and a cover plate containing a second mixing feature that terminates at a second opening located on a surface of the cover plate. Also provided is a means for producing relative sliding motion between the cover plate and substrate surfaces. The substrate and cover plate surfaces are maintained in fluid-tight contact with each other such that relative sliding motion between the first and second mixing features induces fluid mixing through the first and second openings when fluid is present in the mixing features. Also provided is a method for mixing fluids. The device and method are particularly suited for microfluidic applications.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: July 12, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Tom Van de Goor, Reid A. Brennen
  • Apparatus for random access memory array self-repair
    Patent number: 6914833
    Abstract: An apparatus for the on-chip, soft repair of random access memory arrays. In representative embodiments, circuitry is disclosed which provides the ability to soft repair defective random access memory arrays. The disclosed techniques for repair of random access memory arrays do not use techniques such as laser repair in the removal of defective parts of the integrated circuit and its replacement with a redundant part. No additional processing steps are involved. The circuitry necessary to repair defects in random access memory arrays is included on-chip in the input/output blocks of the RAM.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Louise A. Koss, Mary Louis Nash, Dale Beucler
  • Clock divider circuit
    Patent number: 6914469
    Abstract: A system that includes a first circuit configured generate a first set of encoded signals in response to a first clock signal and a second circuit configured to generate a second set of encoded signals in response to the first clock signal is provided. The system also includes a third circuit configured to generate a first pulse signal and a second pulse signal in response to the first set of encoded signals and the second set of encoded signals, and a fourth circuit configured to generate a second clock signal in response to the first pulse signal and the second pulse signal.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Takashi Hidai
  • Method of matching retention times among multiple chromatographic system
    Patent number: 6915227
    Abstract: A data manipulation method to make local chromatography data more usable and comparable to a reference. The method provides time axis correction to better match local data to a reference of the same time scale, time axis transformation to correspond more directly to a reference based on a different time scale, and response axis correction to better match a reference of the same or different response scale, while maintaining the original peak areas. The method may be used along or concurrently with other data manipulation technique to facilitate operations such as searching, matching, visual comparison, mathematical manipulation, and pattern recognition of chromatographic data.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Bruce D. Quimby, Matthew S. Klee, Paul C. Dryden, Elmer A. Axelson
  • Interferometric optical component analyzer based on orthogonal filters
    Patent number: 6914681
    Abstract: A system and method for measuring optical characteristics of an optical device under test (DUT) is provided. The system includes a light source for generating an optical signal applied to the optical DUT. A reference interferometer and a test interferometer are optically coupled to the light source. A computing unit is coupled to the interferometers, and utilizes amplitude and phase computing components, such as orthogonal filters, in determining optical characteristics of the optical DUT.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Bogdan Szafraniec, Gregory D. Vanwiggeren, Ali Motamedi
  • Scanning parameterization for biopolymeric array scanner
    Patent number: 6913200
    Abstract: Methods for programming an array scanner to scan a plurality of biopolymer arrays are provided. In the subject methods, individual scanning parameters for at least two different arrays of the plurality of arrays to be scanned are selected and input into the array scanner prior to scanning the plurality arrays. The programmed scanner then scans the plurality of arrays according to the pre-selected scanning parametersAlso provided are scanners programmed according to the subject methods, as well as computer programming that provides for programming of scanners according to the subject methods. The subject methods and compositions find use in a variety of different applications, including both genomics and proteomics applications.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Debra Ann Sillman, Xiangyang Zhou, Chetan D Jadhaw, Herbert F. Cattell, Jayati Ghosh
  • Signal offset for prevention of data clipping in a molecular array scanner
    Patent number: 6914229
    Abstract: A method and system for preventing signal clipping in a molecular array scanner by adding an offset signal to the signal generated by the photodetectors and initial stages of signal processing within a molecular array scanner in order to promote the signal above the level where signal information is lost during analog-to-digital signal conversion and/or digital signal integration. A portion of the offset is then subtracted from the digital signal or integrated digital signals, leaving a smaller, constant offset that is reported to the user, stored in a data file, or otherwise made available for further correction during later molecular array data processing.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: John F. Corson, Debra A. Sillman, Jayati Ghosh, Kenneth L. Staton
  • Electronic calibration circuit for calibrating a network analyzer
    Patent number: 6914436
    Abstract: An electronic calibration circuit for calibrating a network analyzer. The electronic calibration circuit comprises at least one port for coupling the electronic calibration circuit to the network analyzer. A plurality of switching circuits coupled to the port are operable to provide a plurality of impedance states for electronically calibrating the network analyzer, wherein a transmission line couples at least two of the plurality of switching circuits, the transmission line short enough to reduce interactions of impedance mismatches and to reduce transmission loss. The port and the plurality of switching circuits are comprised within an integrated circuit having a package size small enough to avoid cavity resonance at a high frequency.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: James C. Liu, Robert L. Shimon, Shigetsune Torin, Kenneth H. Wong
  • Over-the-air coupler for RF device testing
    Patent number: 6915111
    Abstract: A preferred method for coupling an RF signal between an RF device and test equipment includes the steps of: (1) providing an RF device; (2) at least partially surrounding a first portion of the antenna of the RF device with a tuning material; and (3) coupling an RF signal to a second portion of the antenna, the second portion of the antenna being disposed between the first portion and the RF device body. Systems and devices also are provided.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Zhong Chen, Mark Wright-Johnson
  • Cable holder
    Patent number: 6915060
    Abstract: A cable holder, in particular for fiber optics cables, includes a base piece that contains a cable receiving duct that is open on top and axially, into which a cable can be loaded, and a cover piece that provides a retaining structure and that is hinged on the base piece to swivel from an open position into a closed position around a swivel axis. In the open position of the cover piece, the cover piece sticks out from the base piece and the cable is loadable into the cable receiving duct. In the closed position of the cover piece, the cover piece extends along the base piece and the retaining structure localizes the loaded cable on the cable receiving duct. The swivel axis extends in the area of one axial end of the cable receiving duct perpendicular to the longitudinal direction of the cable receiving duct and/or perpendicular to the longitudinal direction of the cable.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies Inc.
    Inventors: Malte Schlueter, Jens Heitkamp, Tobias Ruf
  • Methods for producing waveguides
    Patent number: 6915054
    Abstract: Methods for producing waveguides are disclosed. In one embodiment, a waveguide is produced by depositing a first metal layer on a substrate, depositing a sacrificial material on the first metal layer, depositing a second metal layer on the sacrificial material, the second metal layer contacting the first metal layer and defining therebetween a cavity for the waveguide, the cavity filled with the sacrificial material, and removing the sacrificial material.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Marvin Glenn Wong
  • System and method for reducing trapped charge effects in a CMOS photodetector
    Patent number: 6914230
    Abstract: A system and method for reducing image lag in a complementary metal oxide semiconductor (CMOS) photodetector is disclosed. In one embodiment, the invention is a a method for reducing image lag in an array of complementary metal oxide semiconductor (CMOS) photodetectors by forward biasing the photodetectors during a first time period to charge charge traps in the photodetectors, and reverse biasing the photodetectors during a second time period to remove charge from the photodetectors except the charge trapped in the charge traps.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Richard L. Baer
  • Method for determining whether two rectangles of an electronic circuit structure overlap
    Patent number: 6914617
    Abstract: A method of comparing two rectangles of a circuit design structure for overlap is provided. The two rectangles being compared are modified conceptually in such a way as to reduce the amount of computation necessary to determine if the two rectangles overlap. In one embodiment, a first rectangle is reduced in both x- and y-directions to a single point residing in the center of that rectangle, while the size of the second rectangle is expanded in both x- and y-directions by the same amount, resulting in an enlarged rectangle. A determination of whether the single point resides within the enlarged rectangle thus indicates if the two original rectangles overlap. Similarly, in another embodiment, a first rectangle is reduced in the x-direction only, resulting in a y-directed line segment, while a second rectangle is reduced in the y-direction, resulting in an x-directed line segment.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Bryan Haskin
  • Autonomous data mining
    Patent number: 6915282
    Abstract: The invention provides a method and system for performing data mining autonomously with regard to a set of data, and formulating hypotheses in response thereto. An autonomous software element (a) collects sets of data, along with collateral data, into a unified extensible database; (b) formulates possibly interesting hypotheses with regard to those data; (c) evaluates hypotheses, thus relating each hypothesis against a probability it could have occurred by chance; (d) rates each hypothesis in response to multiple factors; (e) reports those hypotheses to users, selecting those users who are most likely to be interested and who are most interested in being informed.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Andrew Conway, Peter Eastman, Howard Snortland, Barrett Eynon
  • Time of flight ion trap tandem mass spectrometer system
    Patent number: 6914242
    Abstract: Apparatus for delivering ions to a mass analyzer. The apparatus includes a time of flight ion guide, a pulsing device for receiving a continuous ion stream containing ions of different atomic mass and for delivering pulses of ions to the ion guide wherein ions in each of the pulses of ions exit the ion guide in ascending order of their atomic mass, and a gating device at the exit end of the ion guide for allowing ions of a predetermined atomic mass to pass to the mass analyzer.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 5, 2005
    Assignee: Agilent Technologies, Inc.
    Inventor: Alex Mordehai
  • Method and system for turning on an optical radiation source
    Patent number: 6911629
    Abstract: An optical communication module includes an optical radiation source as well as control circuitry to control the temperature and the power emitted by the optical source. In order to permit soft start-up of the source while avoiding undesired wavelength variations, the optical source is pre-heated before being caused to emit optical radiation. This may be effected by initially heating the optical source to an initial temperature using the thermoelectrical conditioner associated therewith as a heater and subsequently causing a partly under-threshold current to flow through the source, thus causing the source to be heated while still emitting negligible optical power.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: June 28, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Roberto Lano, Eduardo Augusto Miranda Sologuren
  • Optical switch with reduced beam divergence
    Patent number: 6912335
    Abstract: An optical switch, optical switching method, and a switched optical communication system include at least one micro-mirror in a path along which an optical signal propagates between first and second optical waveguides. Further provided is a refractive material through which the optical signal propagates. The refractive material has a refractive index greater than the refractive index of air. The refractive index of the refractive index may be less than or equal to a refractive index of the optical waveguides.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: June 28, 2005
    Assignee: Agilent Technologies, Inc.
    Inventors: Julie E. Fouquet, Charles D. Hoke