Patents Examined by Eric O. Pudpud
  • Patent number: 5049876
    Abstract: A dialogue system uses a three wire bus connecting a central station with a plurality of substations with two of the wires carrying an AC supply voltage and a third one of the wires carrying data by means of a closed loop of the AC carrying wires and the third wire. The central station uses a series connection of a data transmitter and a data receiver with the third data wire and each substation includes a data receiver in series with the data wire and a data transmitter between the data wire and both AC wires.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: September 17, 1991
    Assignee: Honeywell Inc.
    Inventors: Arno Kahle, Heinz Daab, Dieter Ehlers, Bernd Scheler
  • Patent number: 5010331
    Abstract: A secure electronic circuit which (in its early life) can be electronically calibrated and written to, but thereafter holds its data securely.
    Type: Grant
    Filed: November 14, 1989
    Date of Patent: April 23, 1991
    Assignee: Dallas Semiconductor Corporation
    Inventors: Donald R. Dias, Robert D. Lee, Michael L. Bolan, Francis A. Scherpenberg
  • Patent number: 5006843
    Abstract: The disclosure describes a security system for motor driven vehicles and motor operated plants which uses a micro-chip that is mounted inside vital motor accessories and prevents these accessories from operating without the entry of a 4-digit code word. The micro-chip consists of a silicon substrate and an added semiconductor-switch that adapts the micro-chip to the various switching requirements of the various types of motor accessories. The silicon substrate carries all circuitry for data entry, data storage, conparison, evaluation and control functions and is designed to store data without power. Special circuits are provided to adapt the unit to a number of service requirements, such as maintenance, automatic code entry, and erasure of forgotten codes.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: April 9, 1991
    Inventor: Werner Hauer
  • Patent number: 4980680
    Abstract: A theft resistant security system for motor vehicles. The system has a receptacle with a coupling coil. A surface acoustical wave device associated with the receptacle for relative movement thereto is also provided. The SAW device has a code and its own coupling coil for interaction with the receptacle coupling coil. A testing mechanism is connected to the receptacle for determining whether the code of the SAW device is valid for operation of the motor vehicle.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: December 25, 1990
    Assignee: GTE Products Corp. and GTE Laboratories, Inc.
    Inventors: William C. Knoll, James R. McColl
  • Patent number: 4978944
    Abstract: A paging receiver is disclosed which is compatible with transmissions from analog or digital paging transmitters. The paging receiver has a command structure which permits it to be dynamically programmable to change its functionality including programming of the channels which the paging receiver is to receive. The programmability of the channels permits the paging receiver to be used for making national, regional, remote area, local area, and sublocal area pages, and pages to a group in the local area and to switch from channels which are heavily used during peak paging times to lesser used channels. The paging receiver transmits paging receiver identification code digits in an order of increasing significance which significantly lessens power consumption for all paging receivers tuned to a particular channel for determining if a page is to be received which prolongs paging receiver battery life. The paging receiver displays the place of origin of pages as either being of local origin or from other area.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: December 18, 1990
    Assignee: Telefind Corporation
    Inventors: Andrew A. Andros, Thomas J. Campana
  • Patent number: 4973953
    Abstract: A system of transmitting data and frame signals distinguishable from the data between a plurality of nodes linked in ring form. Each node comprising two transmitter circuits for simultaneously transmitting data and frame signals in opposite directions, respectively, two receiver circuits for receiving the data and the frame signals from opposite directions, respectively, a priority circuit for selecting the data first received from the two opposite directions, a frame circuit for detecting receipt of the frame signals and generating frame signals, and a control circuit for detecting data transmission faults and supervising data transmission of the system according to the location of the fault in the system, in response to the frame signals.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: November 27, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiyuki Shimokawa, Kimito Idemori
  • Patent number: 4972183
    Abstract: A method for transmitting equipment-specifying program parameter data from a communications installation to communications terminal equipment. The method provides for transmitting program parameter data from a communications installation to a plurality of communications terminal equipment connected thereto and is based on a message-oriented transmission protocol that is used in the sense of an information exchange in the signalling channel between the equipment. In the communications equipment, the input and output devices as well as the procedures of performance features and local performance features are essentially controlled with the assistance of the program parameter data. A transmission of program parameter data is initiated either by a parameter request message transmitted from the communications terminal equipment or by an internal request of the communications installation.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: November 20, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus Kuhlmann, Hermann Dibos, Albert Weiss, Klaus Kuhn, Nikolaus Spicker
  • Patent number: 4970508
    Abstract: A system is provided for electronically monitoring a group of sensor switches employed at remote locations in security or alarm systems. To monitor the status of individual switches, a matrix of conductors is employed. The matrix has a predetermined number of send conductors by a predetermined number of return conductors. Switch circuits each having a diode connected in series with one of the sensor switches are connected at selected crosspoints of the matrix of conductors between respective send and return conductors. Line selection circuitry responsive to an input signal from a computer selectively permits the supply of a sourcing voltage potential to at least a selected one of the send and return conductors and the supply of a sinking voltage potential to at least a selected one of the remaining send and return conductors.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: November 13, 1990
    Inventor: Daniel T. Webster, III
  • Patent number: 4968966
    Abstract: A system for transmitting long text messages includes a plurality of transmission cells defining different geographical areas, each having a transmitter for simulcast address transmission at a first data bit rate and for transmitting the address and a message at a second data bit rate higher than the first data bit rate. A paging transceiver generates and transmits an acknowledgment signal in response to receiving a transmitted address at the first data bit rate. Receivers located within each of the transmission cells receive the transmitted acknowledgment signal. An apparatus responsive to the received acknowledgment signal identifies the transmission cell in which the paging transceiver is located effecting the selection of the transmitter in the transmission cell in which the paging transceiver is located to transmit the address and message at the second data bit rate higher than the first data bit rate.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: November 6, 1990
    Assignee: Motorola, Inc.
    Inventors: Leon Jasinski, Francis R. Steel, deceased, Lynne A. Steel, legal representative
  • Patent number: 4959647
    Abstract: A wireless power controller for use with a machine device to selectively connect and disconnect a machine device power source from the machine device includes a transmitter for transmitting an energy wave toward a receiving unit located at the machine device. The receiving unit has an electric switching circuit which is wired in series with the machine device power source and the machine device and provides electrical continuity through normally open transfer contacts are connected one-for-one with the voltage lines carrying power between the power source and the machine device and which contacts are closed during normal operation. The receiving unit senses an energy wave and causes the relay to become energized through operation of the switching circuit to disconnect power from the machine device.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: September 25, 1990
    Assignee: Alternative Industrial Devices for Safety, Inc.
    Inventor: Joseph Daigle
  • Patent number: 4943804
    Abstract: An electronic key which responds to different sets of valid commands over its lifetime, depending on the state of certain circuits within the electronic key.(1) After initial fabrication of the electronic key, the electronic key recognizes a first set of valid commands and ignores all other commands.(2) After the electronic key is tested and a countdown circuit within the electronic key has been calibrated, a fusing element inside the electronic key is blown. This reduces the number of valid commands recognizable by the electronic key. Thus, the key is now restricted to a second set of valid commands.(3) The electronic key is then shipped to an OEM, who programs data into the key and also programs the length of time of the countdown timer. The OEM then sets an R-S flip-flop in the electronic key, which causes certain of the second set of commands to be ignored. Thus, the key will now respond only to a third set of valid commands.(4) The electronic key is then shipped to an end user.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: July 24, 1990
    Assignee: Dallas Semiconductor Corporation
    Inventors: Robert D. Lee, Donald R. Dias
  • Patent number: 4929941
    Abstract: This device for the differential transmission of items of information between at least two elements (1, 2) of an automobile vehicle, each of which elements comprises transmitting means (13, 16) and information receiving means (14, 17) interconnected by two information transmitting lines (11, 12), further comprises means (14a, 17a, 14b, 17b) for processing signals circulating in the information transmitting lines whereby to permit an operation of the device in a degraded mode from signals circulating in one of the information transmitting lines (11, 12).
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: May 29, 1990
    Assignees: Automobiles Peugeot, Automobiles Citroen, Regie Nationale des Usines Renault
    Inventor: Jean-Luc Lecocq
  • Patent number: 4924220
    Abstract: An arbiter circuit is disclosed for processing competing requests for access to a shared resource made simultaneously by two subsystems in a multi-processor system. The arbiter circuit includes an SR flip-flop composed of a pair of NAND gates, and functions to block the passage of a subsequent request signal from one subsystem to the SR flip-flop during a predetermined time interval after a request signal from the other subsystem has been supplied to the flip-flop. A result is that the both inputs of the SR flip-flop are not shifted up from the low levels to the high levels at the same time by the simultaneous generation of request signals from both subsystems, thereby eliminating any possibility of the output from the flip-flop floating at an intermediate level between the high and low level.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: May 8, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaaki Mihara, Toshifumi Kobayashi
  • Patent number: 4887078
    Abstract: A DTMF-code controlled lock device mainly composed of tow units: a key control unit and a lock-body control unit. The key control unit, adapted to be carried by a user includes a dual-tone multifrequency (DTMF) encoding circuit with a keyboard and an amplifying circuit respectively connected thereto for inputting and outputting an unlocking DTMF code.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: December 12, 1989
    Inventor: Jim Cho
  • Patent number: 4878051
    Abstract: A paging network is disclosed which utilizes a plurality of distributed switches to transmit pages on a non-real time basis to achieve efficient and low cost transmission. Each of the switches processes packets of pages received from the network. Each of the switches also processes pages into packets of pages to be transmitted to another switch in the network or into batches of pages to be transmitted by a local paging service if the switch is a local switch. The network dynamically programs the reception channel(s) of the paging receivers in response to traffic conditions of a local switch or in accordance with service options specified by a subscriber to a local paging service. The digits of the paging receiver identification code are transmitted in an order of increasing significance to conserve battery life of the paging receiver. Pages may be initiated by placing a local call to any lata switch in the network and service options may be varied by placing of a local call to a lata switch.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Telefind Corp.
    Inventors: Andrew A. Andros, Thomas J. Campana, Jr., Gary F. Thelen, Robert A. Kinast
  • Patent number: 4860003
    Abstract: A communication system develops an information packet having a packet structure field and at least one message. The message has an address and information associated with the address. A central station accumulates and incorporates the at least one message into the information packet. The central station determines the occurrence of the at least one address and generates identifying data indicating where the address occurs within the information packet. The identifying data is incorporated into the packet structure field and the information packet is transmitted. The information packet is received by at least one selective call receiver capable of operating in a high power mode in order to receive the information packet and a low power mode when receiving is not being performed. The selective call receiver extracts the packet structure field and interprets the identifying data.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: August 22, 1989
    Assignee: Motorola, Inc.
    Inventors: Joan S. DeLuca, Michael J. DeLuca, George B. Shea
  • Patent number: 4860005
    Abstract: A communication receiver is disclosed which can turn itself on or off depending upon the time of day. When the receiver is on, normal battery saving is performed. A time of day clock generates a time signal which is compared to predetermined turn on and turn off times. The turn on and turn off times may be permanently stored in memory or may be manually programmed at the receiver or may be received by the receiver and stored in a reprogrammable memory.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: August 22, 1989
    Assignee: Motorola, Inc.
    Inventors: Joan S. DeLuca, Randi L. Dulaney