Patents Represented by Attorney Ronald Craig Fish
  • Patent number: 6101143
    Abstract: A circuit and method for FPGAs to allow a user to supply a shutdown signal at an external pin which causes internal circuitry in the FPGA to turn off pass transistors in the word lines of every SRAM cell in the FPGA thereby preventing wasted power by current drain to ground through an SRAM cell that happens to be addressed when the FPGA is not being used.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: August 8, 2000
    Assignee: Xilinx, Inc.
    Inventor: Atul V. Ghia
  • Patent number: 5453848
    Abstract: An image processing apparatus useful in, for example, FAX machines, for processing a binary or multiple level tone data in an image including a switch for selectively outputting either a binary level or the multiple level tone pattern in accordance with a selection signal the state of which is determined by the interline reading interval times while scanning the image on an original document.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: September 26, 1995
    Assignee: Hyundai Electronics Industries
    Inventors: Seung H. Park, Jin S. Park, Jun M. Kim
  • Patent number: 5355035
    Abstract: A high speed switching technology suitable for implementing field programmable gate arrays using current mode logic in the high speed data path, and CMOS steering logic outside the high speed data path to enable the high speed switching logic and to implement multiplexer, selector and crossbar switch functions. High speed emitter follower logic compatible with the high speed switching logic for level shifting, buffering, and providing more current sink or source capacity is also disclosed.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: October 11, 1994
    Inventors: Madhukar B. Vora, Burnell G. West
  • Patent number: 5328481
    Abstract: A method for injecting viscous material into the eye. In the injection into the eye, sufficient material is injected to separate a membrane from the retina so that intraocular scissors may be manipulated between the membrane and the retina to cut the attachment points. The membrane is then aspirated away. The injection is done using a standard glue injector with a one-shot and a continuous mode. The glue injector is pneumatically coupled through a sterile filter and a custom adaptor to a sterile syringe storing the material to be injected.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: July 12, 1994
    Assignee: Alcon Laboratories, Inc.
    Inventor: Carl C. T. Wang
  • Patent number: 5237294
    Abstract: There is disclosed a six-port hybrid microwave coupler comprising three inputs and three outputs which are isolated from each other and matched such that a signal applied to any one of the inputs produces signals on all three of the outputs, said signals being orthogonally distributed in phase and uniformly distributed in amplitude. The coupler has a plane configuration of transmission lines with an inner ring comprising three similar segments with the interconnection points of the segments constituting three input or outlet first ports of the coupler. The coupler also has an outer ring comprising three similar segments with the interconnection points of the segments constituting three outlet or input second ports, respectively, of the coupler. The coupler also has three radial branches connecting the interconnection points of the inner ring segments to corresponding interconnection points of the outer ring.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: August 17, 1993
    Inventors: Antoine Roederer, Martin P. C. Maximo
  • Patent number: 5212906
    Abstract: An apparatus for effecting the liquid culture of a plant body (T) implanted on a nutrient broth medium with the nutrient broth medium permeating a nutrient broth support (10) formed of a porous or fibrous material. At this juncture, the nutrient broth support (10) is accommodated in a nursery chamber (20) maintained in an aseptic state, and is placed on a liquid impregnation/drainage controller (60) having the function of transmitting and receiving (replacing) the liquid, inside the nursery chamber (20) The liquid impregnation/drainage controller (60) causes the liquid (mainly a nutrient broth) supplied from an external nutrient broth supplying device (50) to be supported (impregnate)the nutrient broth support (10) placed. At the same time, the liquid impregnation/drainage controller (60) discharges the liquid supported by the nutrient broth support (10) by making use of, for instance, the capillary phenomenon or the like in correspondence with the state of its draining portion (62).
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: May 25, 1993
    Inventors: Noboru Okuno, Masahiro Sei, Hiroshi Abe
  • Patent number: 5187787
    Abstract: A communication interface for decoupling one software application from another software application such communications between applications are facilitated and applications may be developed in modularized fashion. The communication interface is comprised of two libraries of programs. One libray manages self-describing forms which contain actual data to be exchanged as well as type information regarding data format and class definition that contain semantic information. Another library manages communications and includes a subject mapper to receive subscription requests regarding a particular subject and map them to particular communication disciplines and to particular services supplying this information. A number of communication disciplines also cooperate with the subject mapper or directly with client applications to manage communications with various other applications using the communication protocols used by those other applications.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: February 16, 1993
    Assignee: Teknekron Software Systems, Inc.
    Inventors: Marion D. Skeen, Mark Bowles
  • Patent number: 4906840
    Abstract: There is disclosed herein an integrated scanning tunneling microscope and an integrated piezoelectric transducer and methods for making both. The device consists of one or two arm piezoelectric bimorph cantilevers formed by micromachining using standard integrated circuit processing steps. These cantilevers are attached to the substrate at one area and are free to move under the influence of piezoelectric forces which are caused by the application of appropriate voltages generated by control circuitry and applied to pairs of electrodes formed as an integral part of the bimorph cantilever structure. The electric fields caused by the control voltages cause the piezoelectric bimorphs to move in any desired fashion within ranges determined by the design. The bimorph cantilevers have tips with very sharp points formed thereon which are moved by the action of the control circuit and the piezoelectric bimorphs so to stay within a very small distance of a conducting surface.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: March 6, 1990
    Assignee: The Board of Trustees of Leland Stanford Jr., University
    Inventors: Mark Zdeblick, Thomas R. Albrecht
  • Patent number: 4835708
    Abstract: A method and apparatus for comparing substances against other substances or against themselves over time. The method involves taking a chromatogram from each substance and converting each chromatogram to a histogram. The histograms have one bar for each peak on the chromatogram. These histograms are then cross-correlated and the 0th, 1st, 2nd and 3rd moments of the cross-correlation function are calculated. A similarity number in terms of the number of peaks of difference between the two samples compared is then generated by dividing the 3rd moment by the 2nd moment, and the results are displayed. The apparatus of the invention provides the means to gather the data needed for the chromatograms, calculate the histograms, cross-correlation functions and moments and the similarity number and display the result.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: May 30, 1989
    Assignee: Spectra Physics, Inc.
    Inventor: Stephen Frans
  • Patent number: 4802103
    Abstract: There is disclosed herein a method and apparatus for learning the characteristics of an event and for recognizing events which have been previously learned. The apparatus is comprised of forward and feedback matrices which process input signals characterizing events to be learned by comparing the convergence responses generated by the input signals at successively different levels of convergence threshold. The convergence threshold is altered until an acceptable range of convergence is reached, and then the pattern of convergence is learned. The pattern of convergence is stored for future reference. In recognition mode, the input signals are again processed at successively different convergence threshold levels until an acceptable range of convergence is reached. The pattern of convergence is then compared to the stored convergence patterns of known events to determine if the event is known.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: January 31, 1989
    Assignee: Synaptics, Inc.
    Inventors: Federico Faggin, Gary S. Lynch
  • Patent number: 4773024
    Abstract: There is disclosed herein a recognize only embodiment of a recognition matrix comprised of a forward matrix and a reverse matrix each having a plurality of contacts which cause convergence responses on target lines when an input signal is received by said contact. Learning is performed by changing the characteristics of the contacts to alter the convergence responses they cause in accordance with a learning rule involving the comparison of total convergence response on each target line to a convergence threshold. The contacts are not programmed ad hoc in the field as events are individually learned. Instead each contact is programmed permanently by the user for a class of events which is fixed and which can never change. The user typically performs the learning on a computer simulator for all the events which a particular system is to be used to recognize.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: September 20, 1988
    Assignee: Synaptics, Inc.
    Inventors: Frederico Faggin, Gary S. Lynch, Josef S. Sukonick
  • Patent number: 4770654
    Abstract: There is disclosed herein a system for providing control of multiple functions needed to perform eye surgery. A microprocessor based system controls a vacuum generation system using venturis and linear valves and a pneumatic system for driving vitrectomy probes and pneumatic scissors in either a variable frequency, multicut mode or a proportional cut mode where the cutting pressure is proportional to the position of a foot operated position sensor. The frequency of the vitrectomy probe cutting action can also be controlled and the level of vacuum can be controlled from a foot operated position sensor which can also be used to turn on or off a fragmentation device. The footswitch can also be used to turn irrigation fluid on or off, and the flow rate can be controlled from a control on the front panel. By making a certain foot motion in any certain aspiration modes, reflux of the aspiration line can be controlled.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: September 13, 1988
    Assignee: Alcon Laboratories Inc.
    Inventors: Wayne W. Rogers, Daniel D. Rogers, Carl C. T. Wang, Andrew C. C. Wang, Fu-Ming Lian
  • Patent number: 4584594
    Abstract: An integrated circuit structure and process for fabricating it are described which allow fabrication of a very compact high-speed logic gate. The structure utilizes a bipolar transistor formed in an epitaxial silicon pocket surrounded by silicon dioxide. A pair of Schottky diodes and a resistor are formed outside the epitaxial pocket on the silicon dioxide and connected to the pocket by doped polycrystalline silicon.
    Type: Grant
    Filed: September 16, 1983
    Date of Patent: April 22, 1986
    Assignee: Fairchild Camera & Instrument Corp.
    Inventors: Madhukar B. Vora, Hemraj K. Hingarh
  • Patent number: 4512075
    Abstract: Base resistance in an integrated injection logic cell is reduced by providing a low resistance conductive path over the device cell and contacting the base regions of vertical transistors in the cell. In fabricating the I.sup.2 L cell a first intrinsic polysilicon layer is formed over the surface of the device cell, and N-type dopant is diffused through the polysilicon layer to form the N+ collectors of the NPN vertical transistors. Silicon oxide is formed over the doped polysilicon and the undoped intrinsic polysilicon is then removed. Exposed edge portions of the N doped polysilicon is then oxidized to completely insulate the surface of the polysilicon. A second layer of intrinsic polysilicon is then formed over the device cell and P type dopant is diffused through the second polysilicon layer to form the emitter and collector of a lateral PNP transistor and to contact the base regions of the NPN vertical transistors between the N+ collectors.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: April 23, 1985
    Assignee: Fairchild Camera & Instrument Corporation
    Inventor: Madhukar B. Vora
  • Patent number: 4488350
    Abstract: A static bipolar random access memory cell includes first and second transistors formed in epitaxial silicon pockets 41 and 42 in a substrate. The collectors 19 and 19' and bases 15 and 15' of the transistors are interconnected with polycrystalline silicon 21 doped to match the conductivity types of the regions contacted. Undesired PN junctions 40 and 40' created thereby are shorted using an overlying layer of a metal silicide 25. In a region overlying the N conductivity type polycrystalline silicon 23 or 23', the metal silicide is removed and a PN junction 37 or 37' created by depositing P conductivity type polycrystalline silicon 35c or 35c'. If desired additional P type polycrystalline silicon 35a and 35b may be deposited across the surface of the epitaxial layer where the base regions of the two transistors are formed to reduce the base series resistance.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: December 18, 1984
    Assignee: Fairchild Camera & Instrument Corp.
    Inventors: Madhukar B. Vora, William H. Herndon
  • Patent number: 4488166
    Abstract: A process and resulting structure are disclosed for forming vias in integrated circuit structures using metal silicide interconnections. A lower conductor is formed by sequentially depositing silicon and a refractory metal which reacts with the silicon to create a layer of metal silicide. A subsequent layer of silicon is deposited on the surface of the metal silicide. This layer of silicon is insulated from overlying layers by forming insulating material over desired regions of the layer of silicon. A second layer of metal is then deposited across the structure. In openings in the insulating material the metal reacts with the second layer of silicon to form a via of metal silicide. A final layer of silicon may be deposited to convert any remaining metal in the second layer of metal to metal silicide, and the structure annealed to lower its resistivity.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: December 11, 1984
    Assignee: Fairchild Camera & Instrument Corp.
    Inventor: William I. Lehrer
  • Patent number: 4485459
    Abstract: Apparatus is provided for substituting a spare column of memory cells in a byte wide memory for a defective column of cells in such memory. The apparatus includes a spare column of memory cells, an electrically conductive line 13, a spare decoder 16 for switchably connecting the line 13 to the spare column, a first fuse FSD.sub.1 between the spare column and the line 13, a series of second fuses FS controlling a series of switches T.sub.1, T.sub.2 . . . between the line 13 and corresponding sense amplifiers 11, and a series of third fuses FD, each connected between a corresponding column and the sense amplifier associated with that column. The spare column of memory cells is connected to the appropriate sense amplifier by blowing the appropriate fuse FS and supplying the necessary address information to spare decoder 16. The defective column of memory cells may be disconnected by blowing the appropriate fuse FD.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: November 27, 1984
    Assignee: Fairchild Camera & Instrument Corp.
    Inventor: Kalyanasundaram Venkateswaran
  • Patent number: D287766
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: January 13, 1987
    Inventor: William Simmons
  • Patent number: D288127
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: February 3, 1987
    Inventor: William Simmons
  • Patent number: D288362
    Type: Grant
    Filed: February 17, 1984
    Date of Patent: February 17, 1987
    Inventor: William Simmons