Patents Examined by Patrick J. Assovad
  • Patent number: 5757643
    Abstract: A remote management system where data detected by a sensor for detecting a condition of a machine is input from an input port of an interface unit of a control unit such as a microcomputer, and the interface unit is connected via a data transmission controller over a communication line with a central control apparatus which manages a machine like a washing machine from remote, and further the detected data is transmitted from the interface unit to the central control apparatus though the control unit is inapplicable to communication, while the interface unit passes the detected data of the sensor without processing and outputs the detected data to the control unit by means of setting the state of an output port thereof same as that of the input port.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: May 26, 1998
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kiyomitsu Kuroda, Ichiro Fukuoka, Akira Takenaka
  • Patent number: 5694342
    Abstract: The invention provides a method for detecting signals in non-Gaussian background clutter, comprising the steps of: 1) filtering input data to partition Gaussian input data from non-Gaussian input data; 2) estimating the intensity level of the Gaussian input data; 3) determining the probability distributions of the non-Gaussian input data; 4) determining the background noise level of the input data; 5) estimating noise parameters of the input data; 6) estimating the residual intensity of the input data using the noise parameters; 7) determining a detection statistic M from the input data, estimated noise parameters, and the residual intensity of the input data; 8) determining a standard deviation N.sub.i of the detection statistic, M.sub.i ; 9) determining a normalized detection statistic Si, where S.sub.i =M.sub.i /N.sub.i,; 10) determining a maximum value, S.sub.imax of S.sub.i ; 11) determining a mean value S.sub.Mean and standard deviation S.sub.Std dev of all S.sub.i excluding S.sub.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: December 2, 1997
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: David W. J. Stein
  • Patent number: 5659486
    Abstract: A network analyzing method for analyzing an arrival time at each node of a network having at least one false path so as to perform a delay analysis and optimize the network, comprising the step of providing a plurality of arrival time variables, including an arrival time with respect to the false path and an arrival time without respect to the false path, for each node on the false path.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: August 19, 1997
    Assignee: Fujitsu Limited
    Inventor: Yutaka Tamiya
  • Patent number: 5621649
    Abstract: Analysis of an electromagnetic field in a region including an electric conductor having an arbitrary shape is efficiently and accurately performed with a computer. A value of electric potential at a predetermined portion of the electric conductor or a value of the normal component of an electric current density vector to the cross section of a predetermined portion of the electric conductor is used as an initial condition. The distribution of exciting current density vectors in the electric conductor is obtained form the initial condition so as to meet the condition of continuity of electric current. The electromagnetic field of the region is analyzed by using the obtained distribution of exciting current density vectors.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: April 15, 1997
    Assignee: Nippon Steel Corporation
    Inventors: Keiji Iwata, Hosei Hirano, Takatsugu Ueyama, Kenji Umetsu
  • Patent number: 5581481
    Abstract: The present invention is a storage and retrieval system for JPEG images. In one illustrative embodiment the system includes an apparatus for storing a JPEG image in or on a storage medium with unequal error protection, comprising a separator for separating the JPEG image into Type-I and Type-II information, an error correction encoder for encoding the Type-I information with more error protection than the Type-II information, and a storage recorder for recording the encoded Type-I and Type-II information in or on the storage medium. The system further includes an apparatus for reading the encoded Type-I and Type-II information from the storage medium.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 3, 1996
    Assignee: Lucent Technologies, Inc.
    Inventors: Vijitha Weerackody, Yong Zhou
  • Patent number: 5555199
    Abstract: This invention refers to an automatic design process comprising the steps of:- (1)writing a target specification of an item to be designed to a partitioned section of a memory circuit; (2)automatically determining an address for a case stored in a case-base by reference to the target specification;(3)retrieving the case from the case-base and writing the retrieved case to a partitioned section of the memory circuit; and (4)adapting the retrieved case into conformity with the target specification, and writing the adapted case to a partitioned section of the memory circuit as a target solution. Preferably, the process further comprises successive cycles of retrieving a case and adapting the retrieved case, each cycle being initiated by writing of a target specification representing a component of the item to the target specification section of the memory circuit.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: September 10, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Padraig Cunningham, Barry Smyth
  • Patent number: 5539651
    Abstract: The present invention relates to a system and method for determining the effects of linear and nonlinear loads on electrical power systems. The invention utilizes stored load characteristic data in terms of current spectra at predefined voltage values and network impedances to determine the voltage drop between an electrical substation bus and an electrical load bus. The actual load voltage is determined by an iteration technique which takes the difference between a collected substation voltage and the voltage drop and compares the result of the difference to an estimated load voltage. For each iteration the estimated load voltage is re-estimated until the difference result equals the estimated voltage, thereby determining the actual load voltage. Knowing the actual load voltage, permits determination of actual current and power values which are compared to collected substation current and power values. If the values are equal, the effects of the harmonics are known.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: July 23, 1996
    Assignee: Long Island Lighting Company
    Inventors: Zivan Zabar, Ralph Mancini, Leo Birenbaum
  • Patent number: 5500809
    Abstract: A microcomputer system is provided with a subroutine function. The microcomputer system includes a first timer, a first shifting unit, a second timer and a second shifting unit. The first timer operates to measure an actual execution time of a subroutine. The first shifting unit operates to sense that the measured execution time of the subroutine reaches a predetermined time, to the subroutine if sensed and shift the subroutine to the main routine. The second timer operates to measure an actual execution time of a main routine. The second shifting unit operates to sense that the measured execution time of the main routine reaches a predetermined time, to interrupt the main routine if sensed, and shift the main routine to the subroutine.
    Type: Grant
    Filed: July 29, 1993
    Date of Patent: March 19, 1996
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Toshifumi Nakai
  • Patent number: 5491645
    Abstract: A computer system and method for accurately transforming multiple returns received by multiple satellites from multiple targets into a set of single accurate tracks for each target. Observations from multiple satellites create partial or resulting tracks. These resulting tracks are then correlated with pre-existing base tracks by a series of steps in which resulting tracks are paired with pre-determined base tracks according to a series of criteria. Pairs based on: common observation points and time spans, common satellites, and lack of common satellite, are considered sequentially. The final attempt at correlation consists of pairing each remaining track with each base track and using profile dependent piece correlation of the pairs. Any remaining resulting tracks are then added to the set of base tracks.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: February 13, 1996
    Assignee: International Business Machines Corporation
    Inventors: Eugene T. Kennedy, Neils H. Hansen
  • Patent number: 5490087
    Abstract: A cellular telecommunication system comprised of low-Earth orbiting satellites featuring allocation of communication channels among users in cells is disclosed. Each subscriber unit is programmed with an embedded class identifier. During periods when it is desirable to limit acquisition of a satellite to some restricted class or set of classes, such as periods of heavy use, the satellite broadcasts a list of inhibited class identifiers allowing only uninhibited classes access to the communication system. The method reduces thrashing by allowing access to users on a hierarchy class basis. The method uses both real time cell loading data and historical cell loading information based on previous experiences and can be programmed to limit access to emergency services in the case of natural disasters.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: February 6, 1996
    Assignee: Motorola, Inc.
    Inventors: James P. Redden, David Terris, Michael W. Krutz
  • Patent number: 5473551
    Abstract: An automatic analyzer wherein a part exchange judging section judges whether or not the current time reached an exchange date of one of constituent parts of the automatic analyzer. When the part exchange judging section judges that the current time has reached the exchange date of one of the constituent parts, the part exchange judging section delivers a command to display an alarm notifying the exchange of the one of the constituent part on a CRT. A K-factor update judging section judges whether or not the part to be exchanged affects the K factor and the K factor is to be updated. When the K-factor update judging section judges that the K factor is to be updated, an alarm notifying the update of the K factor is displayed on the CRT. The alarm notifying the update of the K factor is displayed until the K factor is updated. Further, each of various kinds of standardized protocols is also automatically executed.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: December 5, 1995
    Inventors: Takeshi Sato, Katsuaki Takahashi
  • Patent number: 5469369
    Abstract: A method and a system using that method are provided which employ a pattern ecognition algorithm to improve sensitivity in detecting hazardous vapors. The algorithm enables the discrimination of vapors of interest from non-hazardous substances at higher concentrations in varying relative humidity. A weight vector is generated corresponding to a N-space representation of a class comprising known vapors of interest, and a N-space representation of the unknown vapor is used to generate an unknown pattern vector. By calculating the dot product of the unknown pattern vector and the weight vector a determination can be made as to whether the unknown vapor is within the class. The weight vector is generated by selecting a training set comprising a subset of the known vapors of interest and background vapors and generating an N-space representation of the training set so as to create an associated weight vector.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: November 21, 1995
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Susan L. Rose-Pehrsson, Daniel Di Lella, Jay W. Grate
  • Patent number: 5446682
    Abstract: A line isolation monitor (LIM) indicates the maximum hazard current of an ungrounded polyphase power distribution system. The LIM is microcontroller based and continuously monitors a fault impedance for each phase of the distribution system. The fault impedance is determined by the LIM by injecting a continuous sine wave measurement current into a ground terminal to generate a measurement voltage across the fault impedance. Using the measurement voltage and current, the LIM calculates the fault impedance and, using this impedance, calculates the hazard current based on the maximum line to ground voltage of the ungrounded system. The LIM has means for self-calibration and self-testing while on-line and during a power-up sequence. These tests compare measured and theoretical values of circuit parameters of voltage and current sensing circuits.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: August 29, 1995
    Assignee: Square D Company
    Inventors: Donald R. Janke, James A. Rodrian
  • Patent number: 5412581
    Abstract: A system for measuring the physical characteristics of a hydrocarbon places a reference hydrocarbon cell in thermal contact with a sample cell containing an unknown hydrocarbon. A near infrared spectrum measurement is taken of both the cells. Measurement data from the sample cell is adjusted by the measurement data from the reference cell, and the adjusted measurement data is evaluated by a model to predict the characteristics of the sample. The model is built from a teaching set of hydrocarbons having known physical characteristics and the reference hydrocarbon. Each of the teaching set hydrocarbons is measured and then adjusted by a measurement of the same reference hydrocarbon, and the adjusted measurements are used to build the model.
    Type: Grant
    Filed: November 5, 1992
    Date of Patent: May 2, 1995
    Assignee: Marathon Oil Company
    Inventor: James E. Tackett