Patents Examined by Mark Tremblay
  • Patent number: 6843422
    Abstract: The present invention relates to identification documents and smart cards. In one implementation, we provide a smart identification document including a document core. The document core is printed and laminated. The laminated core is milled to create a cavity. An integrated circuitry module is provided in the cavity. In one implementation, the cavity includes an upper cavity and a lower cavity. A laminate layer houses the upper cavity while the lower cavity extends into the document core. The upper cavity's aperture exceeds the aperture of the lower cavity resulting in a ledge in the laminate layer. A portion of the module may rest on the ledge, while another portion of the module may extend into the lower cavity. In another implementation, we provide a contactless smart card including a multi-layered structure. The structure includes a carrier layer including the smart card electronics.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: January 18, 2005
    Assignee: Digimarc Corporation
    Inventors: Robert Jones, Joseph Anderson, Daoshen Bi, Thomas Regan, Dennis Mailloux
  • Patent number: 6836605
    Abstract: An optical fiber preform having a low core noncircularity and eccentricity for producing an optical fiber having an improved polarization mode dispersion, a method for producing the preform, and an optical fiber produced from the preform. The optical fiber preform is produced by the following steps. Diameter-reduced portions 11a and 11b are formed in the vicinity of the ends of the glass pipe 11. A glass rod 12 is inserted into the glass pipe 11. The glass rod 12 is fixed to the glass pipe 11 at the diameter-reduced portion 11a. The glass pipe 11 and the glass rod 12 are heat-unified from the diameter-reduced portion 11b forward to the diameter-reduced portion 11a. The optical fiber preform has a core noncircularity of at most 1.5%. The optical fiber has a polarization mode dispersion of at most 0.15 ps/km1/2 at a wavelength of 1,550 nm.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: December 28, 2004
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masaaki Hirano, Eiji Yanada, Masashi Onishi
  • Patent number: 6827277
    Abstract: A security instrument and method of forming the same, in which the instrument is comprised of a series of layers which overlay one another, and in which at least one of the layers has a pattern imprinted thereon in a predetermined location, with pearlescent materials of varying colors and hues. When the layers are bonded together on a base member, a design emerges at the surface that provides optical variations, depending on the attitude and lighting at which the instrument is viewed.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: December 7, 2004
    Assignee: Digimarc Corporation
    Inventors: Bentley Bloomberg, Robert L. Jones
  • Patent number: 6827499
    Abstract: To provide a method of manufacturing a two-dimensional optical connector component by stacking a plural number of one-dimensional optical connector components using at least four parallel disposed guide pins. The positions of the guide pins are determined by at least five pieces of beams. According to this method of manufacturing a two-dimensional optical connector component, optical connector components, such as an FA, can be stacked with high precision. There is also provided a guide pin jig usable for the above-mentioned manufacturing method. The jig is provided with at least four pieces of parallel disposed guide pins, and at least five pieces of beams for determining the position of the guide pins.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: December 7, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Akira Matsumoto, Masashi Fukuyama, Akiyoshi Ide
  • Patent number: 6824054
    Abstract: The present invention relates to a transponder reading device for reading out a plurality of inductive passive transponders having a resonant circuit. A transmitter is provided to create an alternating magnetic field having an operating frequency fB, in which the number of transponders may be placed such that same are magnetically coupled to each other. A retuning means is further provided which is arranged in the alternating magnetic field and has such a frequency-dependent impedance that a voltage induced in the resonant circuits of the transponders by the alternating magnetic field has a maximum in the range of the operating frequency fB.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: November 30, 2004
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forshcung e.V.
    Inventors: Niels Christoffers, Juergen Niederholz, Dirk Hammerschmidt, Gerd Vom Boegel
  • Patent number: 6826345
    Abstract: One aspect of the invention relates to a PLC containing at least one waveguide on a bottom clad layer, each waveguide having a top cap layer on an upper surface thereof, and a top clad layer over the waveguides having the top cap on the upper portion thereof. The presence of the top cap reduces waveguide birefringence and resultant polarization dependence in PLCs, particularly for reducing polarization dependent wavelength shift in AWGs. Another aspect of the invention relates to methods of making PLCs involving forming a waveguide layer on a bottom clad layer, forming a top cap layer on the waveguide layer, patterning the waveguide layer and the top cap layer using a mask to form waveguides having a top cap on an upper portion thereof, and forming a top clad layer over the waveguides having the top cap on the upper portion thereof.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: November 30, 2004
    Assignee: Lightwave Microsystems Corporation
    Inventors: Fan Zhong, Farnaz Parhami, Zhigang Zhou
  • Patent number: 6826341
    Abstract: Optical fibers are described that exhibit reduced splice loss. Further described are techniques for fabricating optical fibers exhibiting reduced splice loss. One described fiber includes a plurality of regions, one region having a higher viscosity and the other region having a lower viscosity, such that when the fiber is drawn under tension, a strain is frozen into the higher viscosity region. A lower viscosity buffer layer is sandwiched between the higher viscosity region and the lower viscosity region. The buffer layer isolates the lower viscosity region from changes in refractive index in the higher viscosity region arising from a change in the strain frozen into the higher viscosity region.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: November 30, 2004
    Assignee: Fitel USA Corp.
    Inventors: David John DiGiovanni, Peter Mikal Holmblad, Torben E. Veng, Andrew D. Yablon
  • Patent number: 6817776
    Abstract: A method wherein optical fibers in a silicon connector are joined to a second optical component. The silicon connector is etched back with a dry etchant that is highly preferential for silicon to thereby etch the silicon connector much more than the optical fiber. After etching, the optical fibers protrude beyond the silicon connector so that they may be easily joined to the second optical component. Also disclosed is an optical fiber assembly made according to this method.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: November 16, 2004
    Assignee: International Business Machines Corporation
    Inventors: Evan George Colgan, Robert W. Law, Subhash Laxman Shinde
  • Patent number: 6814296
    Abstract: Antenna errors are corrected in an integrated circuit design utilizing spare gates distributed throughout the integrated circuit. An integrated circuit in accordance with the invention includes standard cells interspersed with spare gates. For example, the circuit may include one or more rows of spare gates arranged between groups of rows of standard cells, or islands of spare gates arranged between groups of rows of standard cells. A signal line of the integrated circuit having a detected antenna error associated therewith is coupled via one or more conductors associated with at least one metal layer of the integrated circuit to a diode or other antenna error control circuitry formed using at least one of the spare gates. The standard cells and spare gates are preferably placed in accordance with a placement operation of an automated place and route process of a standard cell computer-aided design (CAD) tool.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: November 9, 2004
    Assignee: Lattice Semiconductor Corp.
    Inventors: Jay H. Angle, Christopher D. Gorsuch, Oscar G. Mercado, Anthony K. Myers, John A. Schadt, Brian W. Yeager
  • Patent number: 6808115
    Abstract: The present invention provides an inexpensive scanner that can scan at near to medium focal lengths. A light beam is generated to illuminate a target area on the scanned object. A mirrored surface directs the light beam towards the object and light reflected from the object to a detector. The detector is positioned to receive a constant amount of reflected light from the mirrored surface.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: October 26, 2004
    Assignee: Accu-Sort Systems, Inc.
    Inventors: Kenneth W. Alves, Thomas J. Brobst
  • Patent number: 6808110
    Abstract: The method is for cashless payment, in which a call (V) is set up via the mobile radio network (MS) from the terminal (MF) with multifunctional chipcard (CK) to a business terminal (GE). A credit rating check is performed with a card number (KN) stored in the chipcard (CK). An amount of money entered at the business terminal (GE) is released for payment in the event of a positive result of the credit rating check after a confirmation at the terminal (MF).
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: October 26, 2004
    Assignee: SIemens Aktiengesellschaft
    Inventor: Christian-Friedrich Von Brockdorff
  • Patent number: 6805284
    Abstract: A system and method for using write-and-destroy transaction cards which cannot be reprogrammed. The write-and-destroy transaction cards are programmed (i.e., written to) at bit increments representing, in total, the stated value of the card. The stated value may be represented in one or a plurality of denominations and currencies. In use, the remaining value of a card can be ascertained at a merchant location by reading those bits which have not been erased. The remaining value can additionally be confirmed by contacting the issuing financial institution using a unique serial number which may be encoded onto each transaction card. Upon confirmation that the card has sufficient value to conduct the desired transaction, the card is decremented by erasure of the bits representing that value.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: October 19, 2004
    Assignee: International Business Machines Corporation
    Inventors: Maria Azua Himmel, Herman Rodriquez, Newton James Smith, Jr.
  • Patent number: 6807354
    Abstract: A channel core pattern includes a plurality of core pattern elements having different lengths, another core pattern connected with the channel core pattern in series, and a refractive index of the channel core pattern is higher than a refractive index of the another core pattern.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: October 19, 2004
    Assignee: Fujitsu Limited
    Inventors: Goji Nakagawa, Haruhiko Tabuchi
  • Patent number: 6801699
    Abstract: An optical waveguide fiber that simultaneously exhibits large effective area and good resistance to bend induced attenuation, as measured by any of the tests known in the art. The cut off wavelength is controlled to allow single mode operation over a wavelength range that extends from about 1340 nm to 1650 nm. The optical waveguide fiber refractive index profile is simple in design allowing cost effective manufacture.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: October 5, 2004
    Assignee: Corning Incorporated
    Inventors: Scott R. Bickham, Phong Diep, Pamela A. Hajcak
  • Patent number: 6795620
    Abstract: A method and optical tap is provided for forming a monitor signal that is a measure of optical power in a guided mode output of an optical modulator. The method and optical tap may monitor the guided mode power without tapping the guided mode light, even when optical power of the radiation modes is non-complementary to that of the output mode. Light from the radiation modes of the optical modulator is coupled into the wall of a capillary through a front face. Separate portions of the radiation mode light are reflected into photodetectors, which form photocurrents that are incoherently added to form the monitor signal.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: September 21, 2004
    Assignee: Codeon Corporation
    Inventors: Robert Tavlykaev, Alan Donaldson
  • Patent number: 6789736
    Abstract: A process for encoding and decoding data on the magnetic stripe of a card at any bit density is provided. Data is read from the magnetic stripe of a card and transmitted to a single board computer. The single board computer receives the data and determines if the bit density of the cards is supported by the computer. If the bit density is supported, the data is sent to a demodulator object to be demodulated and converted to a data stream of ASCII characters. The data stream is then decoded, unpacked and sent to a ticket validator to check the validity of the data. If the bit density is not supported by the computer, a demodulator object supporting the bit density can be instantiated.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: September 14, 2004
    Assignee: Cubic Corporation
    Inventors: Robert Prow, John Decarli
  • Patent number: 6786654
    Abstract: The disclosure relates to encapsulated optical fiber end-coupled devices. An optical assembly may include a fiber holder and a cap with an optical component mounted to its underside. The optical component may be aligned with a fiber passing between a substrate and a second section of the fiber holder to allow optical signals to be coupled between the optical component and the fiber. Techniques for assembling the fiber holder and the cap may facilitate the formation of hermetic seals to provide a protective environment for the optical component.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: September 7, 2004
    Assignee: Hymite A/S
    Inventor: Arnd Kilian
  • Patent number: 6783066
    Abstract: An on-premises restaurant paging system and method for paging a customer in the restaurant. A data token provided to the customer includes an encoded customer identifier which the customer inputs into one of a plurality of paging receivers that are mounted on different tables in the restaurant. Each of the paging receivers includes a data input device for reading the data token, and storing the customer identifier in a database. A programmable paging transmitter broadcasts a paging message in the restaurant that includes a broadcast customer identifier. Each of the fixed paging receivers receives the broadcast paging message, extracts the broadcast customer identifier, and compares the broadcast customer identifier with the customer identifier stored in its database. The paging receiver that determines a match generates an alert signal to alert the customer.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: August 31, 2004
    Assignee: Long Range Systems, Inc.
    Inventors: James Livingston, Russell P. Blink, Kenneth J. Lovegreen
  • Patent number: 6781682
    Abstract: An optical apparatus has an adjustment apparatus 5 and an optical unit 1 including a plurality of optical elements. The adjustment apparatus sequentially provides control signals that, according to a probabilistic search technique, change the parameters of a stipulated plurality of optical elements among the optical elements to become parameters that cause the functions of the optical apparatus to satisfy stipulated specifications. A method of adjusting the optical apparatus includes sequentially providing control signals that, according to a probabilistic search technique, change the parameters of the stipulated plurality of optical elements among the optical elements, and searching for optical values at which the functions of the optical apparatus the stipulated specification.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: August 24, 2004
    Assignees: Agency of Industrial Science and Technology, Ministry of International Trade & Industry, Evolvable System Research Institute, Inc.
    Inventors: Yuji Kasai, Masahiro Murakawa, Taro Itatani, Tetsuya Higuchi
  • Patent number: 6779732
    Abstract: A smart card which includes a non-volatile read/write memory, a resolve buffer, a processor connected to the memory and the resolve buffer, and an installer module configured to cause the processor to receive computer code having unresolved references into the memory, and further configured to cause the processor to perform a method for resolving unresolved references. The method including steps for copying the contents of the memory into the resolve buffer, detecting unresolved references in the computer code, determining the resolved reference for each of the detected unresolved references, updating the contents of the resolve buffer with the resolved references, and replacing the contents of the memory with the contents of the resolve buffer.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: August 24, 2004
    Assignee: Schulumberger Malco, Inc.
    Inventors: Ksheerabdhi Krishna, Tim Wilkinson, Yannick Burianne