Patents Represented by Attorney Peter Xiarhos

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  • Test data insertion arrangement for a conference circuit
    Patent number: 4466092
    Abstract: A time shared conference circuit for establishing conference calls in a T-S-T digital switching network provides for automatically inserting predefined test data into unused time slots of its output PCM voice data stream. The transmission of this predefined data verifies the interface operation of the conference circuit with the switching network.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: August 14, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Robert E. Renner
  • Time shared conference arrangement
    Patent number: 4466093
    Abstract: The conference circuit provides for establishing a conference call between three conferees in a T-S-T digital switching network. The voice samples of the three conferees are sequentially stored in input buffers. When all three conferees' samples are stored, the samples are transferred to working buffers, while the input buffers store three other conferees' samples. In the time slot succeeding the transfer to the working buffers, two conferees' voice samples are compared. During the next time slot, the resultant of the comparison is transmitted to the third conferee. This conference arrangement provides for time sharing up to 64 three-port conference calls via the switching network.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: August 14, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Robert E. Renner
  • Apparatus for CCIS data transfer between a CPU and a plurality of data terminal equipment
    Patent number: 4466062
    Abstract: A single CCIS central processing unit is employed to receive and transmit CCIS data from a central switching office to other CCIS offices via modems, or digital trunk units and T1 spans. This apparatus facilitates orderly and timely data exchange between a CCIS central processing unit and a plurality of data terminal equipment. Every 10 milliseconds the CCIS CPU scans all the data terminal equipment. However, particular data transmissions require interaction at a more rapid rate. The present invention provides for a high priority data transmission from the terminal equipment to the central processing unit intermingled with regular priority messages.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: August 14, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Krikor A. Krikor
  • Data capture arrangement for a conference circuit
    Patent number: 4466094
    Abstract: A time shared conference circuit for establishing conference calls in a T-S-T digital switching network provides for trapping certain PCM voice data from the output PCM voice data stream of the conference circuit. Data is automatically trapped for detection of errors such as parity. Data in any specific time slot may be trapped for a non-error condition under control of a processor.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: August 14, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Robert E. Renner
  • Remote data link switching arrangement
    Patent number: 4464748
    Abstract: An automated switching office arrangement for switching data link transmission from analog to digital data or vice versa is disclosed. Any or all of a number of data links may be automatically switched between the digital and the analog transmission modes. This automated switching may be accomplished locally within the switching office or from a remote location.
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: August 7, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Krikor A. Krikor
  • Negative inductance multiplier circuit including temperature compensation
    Patent number: 4463307
    Abstract: A circuit for increasing the inductance of a transformer as used in a telephone line circuit. An operational amplifier with appropriate feedback is connected across a separate winding of the transformer to provide the reactive inductance. To compensate for changes in resistance of the winding, a field effect transistor is controlled by the same amplifier output to provide a positive resistance in the feedback path and thus maintain balance.
    Type: Grant
    Filed: October 26, 1982
    Date of Patent: July 31, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Frederick J. Kiko, Thomas J. Barzen
  • Latching relay hold release circuit for a telephone instrument
    Patent number: 4454385
    Abstract: In a hold circuit including a relay normally latched and connecting the hold circuit to a subscriber telephone line, a first hold release circuit outputs a trigger signal to a silicon controlled rectifier turning on the rectifier responsive to a sensed drop in line potential, thereby providing an electrical path for the discharge of a capacitor. The capacitor discharges through the coil of the relay unlatching the relay and releasing the hold circuit from the line. The hold circuit is also arranged to be released by a second hold release circuit which outputs a trigger signal to the silicon controlled rectifier responsive to a pre-arranged timing interval.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: June 12, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Gary Grantland, Eduard F. B. Boeckmann
  • Arrangement for subscriber line verification and ring testing
    Patent number: 4454388
    Abstract: An arrangement for testing a plurality of subscriber lines, which are operationally connected to an electromechanical switching system is shown. Operational service is to be transferred from the electromechanical switching system to a digital switching system. This arrangement provides for automatically verifying the connection of the subscriber lines to the digital switching system and determining whether the proper ring signalling is transmitted to each subscriber.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: June 12, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: William R. Daniels, John S. Young
  • Arrangement for subscriber line ring testing
    Patent number: 4453048
    Abstract: An arrangement for automatically testing a plurality of subscriber lines, which are operationally connected to an electromechanical switching system is shown. Operational service is to be transferred from the electromechanical switching system to a digital switching system. This arrangement provides for automatically verifying whether the digital switching system is applying the proper ringing signal to each subscriber by a comparison with that applied by the electromechanical switching system.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: June 5, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: William R. Daniels, John S. Young
  • Telephone feature assignment circuit
    Patent number: 4453040
    Abstract: A telephone feature assigment circuit for use in a telephone having a plurality of features and pushbuttons. Each feature can be assigned to a selected one of the pushbuttons. The telephone also includes a microprocessor and visual and audible prompting devices. These devices are operated by the microprocessor in response to prolonged operation of a selected pushbutton. Keypad initiated signals are then provided to identify the feature to be assigned to the selected pushbutton. The microprocessor subsequently causes the assigned feature to be performed in response to momentary operation of the selected pushbutton.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: June 5, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Ann L. Wolf, Louis W. Smith
  • Arrangement for single line testing
    Patent number: 4453049
    Abstract: An arrangement for testing a single subscriber line, which is operationally connected to an electromechanical switching system is shown. Operational service is to be transferred from the electromechanical switching system to a digital switching system. The arrangement provides for isolating subscribers which share common line equipment, for verifying the subscriber's line and its ringing characteristics.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: June 5, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: William R. Daniels, John S. Young
  • Telephone station signaling lock circuit
    Patent number: 4453042
    Abstract: A circuit which locks the signaling circuit of a telephone station. A microprocessor disconnects a keypad from an associated tone generator upon detection of operation of a lock button. The microprocessor connects the keypad to the tone generator upon detection of operation of the lock button and a predetermined unlock code provided by the keypad.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: June 5, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Ann L. Wolf, John G. Wagoner
  • Telephone substation transmitter muting circuit
    Patent number: 4451706
    Abstract: A telephone substation transmitter muting circuit used in a substation having a hold function wherein, a transistor turns on connecting a muting network across the handset transmitter whenever the hold circuit is activated.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: May 29, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Eduard F. B. Boeckmann
  • Electronic hold release circuit
    Patent number: 4447674
    Abstract: In a hold circuit including a silicon controlled rectifier (SCR) normally turned on and connecting the hold circuit to a subscriber line, a first hold release circuit outputs a trigger signal to a transistor turning off the transistor and disconnecting a line seizing network. A second hold release circuit outputs a trigger signal to a second transistor responsive to the line seizing network being disconnected. The second transistor connects a load resistor across the SCR dropping the holding current flowing through the SCR causing it to turn off. The second hold release circuit is also arranged to output its trigger signal to the second transistor responsive to a pre-arranged timing interval.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: May 8, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Gary Grantland, Hugh S. Montgomery, Eduard F. B. Boeckmann, Larry A. Woodworth
  • Electrochemical cell with two rate battery stacks
    Patent number: 4447504
    Abstract: A primary electrochemical cell capable of selective operation at one of several possible discharge rates. The electrochemical cell in accordance with the present invention includes a pair of battery stacks positioned one above the other in a housing of the cell in a spaced-apart relationship. One of the battery stacks includes a first plurality of anode structures of first thicknesses and a first plurality of carbon electrode structures of first thicknesses arranged in alternation with the first plurality of anode structures. Similarly, the other battery stack includes a second plurality of anode structures of second thicknesses and a second plurality of carbon electrode structures of second thicknesses arranged in alternation with the second plurality of anode structures.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: May 8, 1984
    Assignee: GTE Products Corporation
    Inventor: Franz Goebel
  • Method for establishing a vertical E-field antenna installation
    Patent number: 4445123
    Abstract: A method of establishing an ELF/VLF, vertical E-field transmitter loop antenna installation. The method comprises the steps of ascertaining a land region having contiguous areas of widely differing (by at least 4 to 1) subsurface conductivity, and positioning a closed loop wire antenna having a high-power, ELF/VLF transmitter in series electrical path therewith in a generally horizontal plane over the interface of the first and second contiguous areas. The closed loop wire antenna may be positioned above the surface of the contiguous areas, or on top or within the contiguous areas. The antenna may take the form of a rectangular, circular or elliptical loop and is positioned with respect to the interface of the contiguous areas as determined by the values of skin depths of the contiguous areas.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: April 24, 1984
    Assignee: GTE Products Corporation
    Inventor: Windsor D. Wright
  • Electronic hold circuit
    Patent number: 4440981
    Abstract: In a hold circuit connectable to a subscriber telephone line, a silicon controlled rectifier is turned on by a user operated momentary pushbutton connecting the positive side of the line to the hold circuit. A comparator circuit sensing the initial value of the loop voltage, turns on a transistor and connects a line seizing network across the subscriber line.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: April 3, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Gary Grantland, Hugh S. Montgomery, Eduard F. B. Boeckmann, Larry A. Woodworth
  • Latching relay hold circuit for a telephone instrument
    Patent number: 4435622
    Abstract: In a hold circuit connectable to a subscriber telephone line, a line voltage storage capacitor is momentarily connected to the subscriber line charging to line potential and providing trigger current to a silicon controlled rectifier. When sufficient trigger current is gained the silicon controlled rectifier turns on discharging the capacitor through a latching relay coil and a transistor, thereby turning on the relay and connecting the hold circuit. The transistor is turned on by a bias voltage from the capacitor when the silicon controlled rectifier is turned on.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: March 6, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventors: Gary Grantland, Eduard F. B. Boeckmann
  • Floating battery feed circuit for telephone subscriber line interface
    Patent number: 4429186
    Abstract: An arrangement for providing a subscriber line with an operating potential. The energy to the line is transferred thereto inductively at a fixed frequency and includes the rectification means on the subscriber side of the inductor. The amount of energy transferred to the line is controlled by pulse width. The control pulse width circuit includes means to decrease the energy transfer above a level at which a subscriber station internal regulation would be defeated.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: January 31, 1984
    Assignee: GTE Automatic Electric Inc.
    Inventor: Todd H. Gartner
  • Housing for an automatic telephone alarm system
    Patent number: D274428
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: June 26, 1984
    Assignee: United Telecommunications, Inc.
    Inventor: Alfred I. Bottner