Patents by Inventor Thomas G. Xydis

Thomas G. Xydis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7589614
    Abstract: A method allows access to an electronic device disposed in a working space by a user having a remote device is disclosed. An access point transmits an initial signal instructing the remote device to respond after a delay period, which responds upon the expiration of the delay period. A distance of the remote device is determined based upon a period interval from the transmission of the initial signal to the detection of a response signal and the known positions of the access point and the electronic device. Alternatively, a fixed device transmits locating signals detected by three access points, which measure a time differential. The position of the remote device is determined based upon a time of arrival, the location of each of the access points, and the time differential. The electronic device is enabled when the remote device is within the predetermined distance range.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: September 15, 2009
    Assignee: Ensure Technologies, Inc.
    Inventor: Thomas G Xydis
  • Patent number: 6894612
    Abstract: A method and system (10) for directing relief to individuals (11) requiring emergency assistance includes each individual in a building (20) carrying a respective transponder (12). The transponders transmit a wireless emergency signal in response to actuation by an individual. A communication link (22) such as a local area network (LAN) runs throughout the building. Transceivers (14) located at known locations are connected to the link. Each transceiver has a unique identification and wirelessly receives an emergency signal transmitted by a transponder located within the vicinity of the transceiver. Each transceiver transmits the received emergency signal along with the unique transceiver identification to a controller (16) via the link. The controller processes a received emergency signal to determine the location of the individual requiring emergency assistance based on the unique identifications of the transceivers transmitting the emergency signal.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: May 17, 2005
    Assignee: Audio Alert, LLC
    Inventor: Thomas G. Xydis
  • Publication number: 20040252023
    Abstract: A method and system (10) for directing relief to individuals (1 1) requiring emergency assistance includes each individual in a building (20) carrying a respective transponder (12). The transponders transmit a wireless emergency signal in response to actuation by an individual. A communication link (22) such as a local area network (LAN) runs throughout the building. Transceivers (14) located at known locations are connected to the link. Each transceiver has a unique identification and wirelessly receives an emergency signal transmitted by a transponder located within the vicinity of the transceiver. Each transceiver transmits the received emergency signal along with the unique transceiver identification to a controller (16) via the link. The controller processes a received emergency signal to determine the location of the individual requiring emergency assistance based on the unique identifications of the transceivers transmitting the emergency signal.
    Type: Application
    Filed: July 28, 2004
    Publication date: December 16, 2004
    Inventor: Thomas G. Xydis
  • Patent number: 6763315
    Abstract: The subject invention provides a method to determine the proximity of a user (11) having a first electronic device (12) to a second electronic device (14) for allowing the user (11) access to the second electronic device (14). The method includes the steps of transmuting data (44) in a plurality of signals at different frequencies to establish communication between the first electronic device (12) and the second electronic device (14). The method further includes detecting the plurality of signals at the different frequencies with the first electronic device (12). The method is characterized by determining an overall signal strength from the predetermined number of measured signals strengths and comparing the overall signals strength to a predetermined threshold for enabling the second electronic device (14) in response to the overall signal strength being above the predetermined threshold.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: July 13, 2004
    Assignee: Ensure Technologies, Inc.
    Inventor: Thomas G. Xydis
  • Patent number: 6545595
    Abstract: A doorbell system having a sound memory for storing and playing a CD quality doorbell sound is disclosed. Said doorbell system includes a receiver unit for receiving an indication of a doorbell button being pressed, a code detector for commanding the sound memory to output stored sound signals and sound producing means for outputting a CD quality sound. Also disclosed is a method for storing a CD quality sound into a doorbell system.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: April 8, 2003
    Assignee: The Lamson & Sessions Co.
    Inventor: Thomas G. Xydis
  • Patent number: 6456958
    Abstract: A security apparatus and a method for determining the distance between a computer (72) and a token (70) carried by a user (52) for allowing the user (52) to access the computer (72). The computer (72) is connected to a first transceiver (16) having at least one antenna for emitting and detecting a radio frequency (RF) signal, and to a microphone (76) for detecting an audio signal (24). The computer (72) is also connected to a counter (26) for measuring a time interval (28) between a transmitted RF signal (20) and audio signal (24) from the token (70). The token (70) is connected to a second transceiver (30) having at least one antenna for emitting and detecting a RF signal (20) and a loudspeaker (74) for emitting an audio signal (24).
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: September 24, 2002
    Assignee: Ensure Technologies, Inc.
    Inventor: Thomas G. Xydis
  • Publication number: 20020104012
    Abstract: The method of the subject invention includes the steps of transmitting a radio frequency (RF) signal from a first electronic device (18) and detecting the RF signal (48) from the first electronic device (18) with an access point (20). The method also includes transmitting a RF signal (50) from a second electronic device (12) and detecting the RF signal (50) from the second electronic device (12) with the same access point (20). The method is characterized by enabling the first electronic device (18) to allow the user (16) having the second electronic device (12) to access the network (13) and the first electronic device (18) in response to the access point (20) detecting the RF signals (48, 50) from both the first (18) and the second electronic devices (12).
    Type: Application
    Filed: November 29, 2001
    Publication date: August 1, 2002
    Applicant: Ensure Technologies, Inc.
    Inventor: Thomas G. Xydis
  • Patent number: 6414589
    Abstract: An apparatus for activating a doorbell chime and for remotely controlling an auxiliary doorbell chime includes a push button unit responsive to manual actuation for activating the doorbell chime and generating a radio frequency wave and a remote unit responsive to the radio frequency wave for generating an auxiliary acoustic frequency wave. The push button unit has a manually actuated switch assembly with a first pair of normally open switch contacts adapted to be connected in series with the doorbell chime and a source of electrical power and a second pair of normally open switch contacts, a radio frequency transmitter connected in series with the second pair of switch contacts for generating a radio frequency output signal and a first antenna connected to the transmitter and responsive to the radio frequency output signal for generating the radio frequency wave.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: July 2, 2002
    Assignee: Dimango Products Corporation
    Inventors: Paul G. Angott, Thomas G. Xydis
  • Publication number: 20020069030
    Abstract: A security apparatus and a method for determining the distance between a computer (72) and a token (70) carried by a user (52) for allowing the user (52) to access the computer (72). The computer (72) is connected to a first transeiver (16) having at least one antenna for emitting and detecting a radio frequency (RF) signal, and to a microphone (76) for detecting an audio signal (24). The computer (72) is also connected to a counter (26) for measuring a time interval (28) between a transmitted RF signal (20) and audio signal (24) from the token (70). The token (70) is connected to a second transceiver (30) having at least one antenna for emitting and detecting a RF signal (20) and a loudspeaker (74) for emitting an audio signal (24).
    Type: Application
    Filed: December 1, 2000
    Publication date: June 6, 2002
    Applicant: Ensure Technologies, Inc.
    Inventor: Thomas G. Xydis
  • Publication number: 20020065625
    Abstract: The subject invention provides a method to determine the proximity of a user (11) having a first electronic device (12) to a second electronic device (14) for allowing the user (11) access to the second electronic device (14). The method includes the steps of transmuting data (44) in a plurality of signals at different frequencies to establish communication between the first electronic device (12) and the second electronic device (14). The method further includes detecting the plurality of signals at the different frequencies with the first electronic device (12). The method is characterized by determining an overall signal strength from the predetermined number of measured signals strengths and comparing the overall signals strength to a predetermine threshold for enabling the second electronic device (14) in response to the overall signal been above the predetermine threshold.
    Type: Application
    Filed: November 29, 2001
    Publication date: May 30, 2002
    Applicant: Ensure Technologies, Inc.
    Inventor: Thomas G. Xydis
  • Patent number: 6252358
    Abstract: An illumination level control assembly (10) includes a plurality of light bulbs (20), and a main power switch (30) for supplying electrical power to the bulbs (20). The assembly (10) includes a remote control (32) with a single button for producing a single signal, and a controller (50) responsive to the remote control (32) for sequentially and in numeric order changing the supply of electrical power to the bulbs (20), whereby successive actuations of the single button changes by one the number of bulbs (20) illuminated. The remote control (32) produces a radio frequency signal, and the controller (50) includes a radio frequency receiver (52) to receive signals from the remote control (32). The controller (50) includes a sequencer (54) for sequentially terminating electrical power to the bulbs (20) to successively terminate electric power to the bulbs (20) one at a time.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: June 26, 2001
    Inventors: Thomas G. Xydis, Paul G. Angott
  • Patent number: 6212448
    Abstract: A programmable utility vehicle assembly 10 comprises a carriage 20 for moving over a plot, and a mobile transceiver 30 attached to the carriage 20 for transmitting a signal. The assembly 10 includes a power unit 22 for driving the carriage 20 over the plot, and a steering unit 24 for steering the carriage 20 over the plot. The assembly 10 further includes a plurality of locating stations 40 each having a stationary transceiver 42 for receiving a signal from the mobile transceiver 30 and transmitting a return signal to the mobile transceiver 30. The assembly 10 is characterized by a central processing unit 60 (CPU) on the carriage 20 for preprogramming a desired vehicle path having a counter 62 for counting two way propagation time between the mobile transceiver 30 and said remote locating stations 40 to determine said vehicle location and guide said vehicle along the programmed path.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: April 3, 2001
    Inventor: Thomas G. Xydis
  • Patent number: 6175298
    Abstract: A doorbell system having a sound memory for storing and playing a CD quality doorbell sound is disclosed. Said doorbell system includes a receiver unit for receiving an indication of a doorbell button being pressed, a code detector for commanding the sound memory to output stored sound signals and sound producing means for outputting a CD quality sound. Also disclosed is a method for storing a CD quality sound into a doorbell system.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: January 16, 2001
    Assignee: The Lamson & Sessions Co.
    Inventor: Thomas G. Xydis
  • Patent number: 6070240
    Abstract: A method of controlling a computer (12) system (10) comprising the steps of: disposing a computer (12) in an operating space and placing the computer (12) in a lockout mode to prevent operation of the computer (12) software by a user. A database (26) of authorized user codes is compiled in the computer. A transponder (20) places a first authorized user code in the operating space and a transceiver (18) scans the operating space for the presence of a transponder transmitting an authorized user code and senses the presence of the first authorized user code in the operating space. A comparator (29) compares the first authorized user code to the database (26) for verification to unlock the computer (12) for use by the first authorized user in response to sensing the authorized user code in the operating space. The authorized user then is free to operate the computer software while the sensing for the presence of a transponder (20) transmitting an authorized user code in the operating space is continued.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: May 30, 2000
    Assignee: Ensure Technologies Incorporated
    Inventor: Thomas G. Xydis
  • Patent number: 6009358
    Abstract: A programmable lawn mower assembly (10) including a carriage (12) supporting a mower central processing unit (CPU) (24) for controlling the drive motors (18) to control the direction of movement of the carriage (12). The assembly (10) includes first and second locating transmitters to be disposed on posts in spaced positions about the lawn with each locating transmitter simultaneously transmitting a radio frequency signal which travels at a first velocity and an audio signal which travels at a second velocity slower than said first velocity. A carriage receiver (50, 52) is disposed on the carriage (12) for receiving the radio and audio signals from the locating transmitters and for providing signals to the CPU (24) for determining the position of the carriage (12) relative to the locating transmitters by measuring the time between said radio and audio signals from each locating transmitter.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: December 28, 1999
    Assignee: Thomas G. Xydis
    Inventors: Paul G. Angott, Thomas G. Xydis
  • Patent number: 5911670
    Abstract: A vehicle central processing unit (CPU) (50) controls the power unit (16 or 18) to control the direction of movement of the carriage (12) of a lawn mower for determining the position of the lawn mower relative to locating stations (36, 38 and 40) in response to the time of movement from the counter (54) of the distance determining transmissions between the transceivers (42) at the locating stations (36, 38 and 40) and the lawn mower.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: June 15, 1999
    Assignees: Paul G. Angott, Thomas G. Xydis
    Inventors: Paul G. Angott, Thomas G. Xydis
  • Patent number: 5757267
    Abstract: A wireless audible indication system comprising a transmitter and a receiver. An embodiment of the transmitter includes a crystal oscillator which produces a signal having a predetermined audio frequency. A duty cycle limiting circuit limits the duty cycle of the oscillator signal to be less than 25%. The limited duty cycle signal is applied to a radio frequency oscillator to produce an amplitude modulated radio frequency signal. An embodiment of the receiver includes a superregenerative detector which provides wide band detection of transmissions about a carrier frequency. A signal processing circuit formed by a cascade of a crystal filter stage, an amplifier/comparator stage, and a detector stage, processes the signal from the superregenerative detector. A sound generator integrated circuit, which generates an audible signal indicative of reception of a transmitted signal, is coupled to the signal processing circuit.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: May 26, 1998
    Assignee: Dimango Products
    Inventor: Thomas G. Xydis
  • Patent number: 5757305
    Abstract: A wireless audible indication system comprising a transmitter and a receiver. An embodiment of the transmitter includes a crystal oscillator which produces a signal having a predetermined audio frequency. A duty cycle limiting circuit limits the duty cycle of the oscillator signal to be less than 25%. The limited duty cycle signal is applied to a radio frequency oscillator to produce an amplitude modulated radio frequency signal. An embodiment of the receiver includes a superregenerative detector which provides wide band detection of transmissions about a carrier frequency. A signal processing circuit formed by a cascade of a crystal filter stage, an amplifier/comparator stage, and a detector stage, processes the signal from the superregenerative detector. A sound generator integrated circuit, which generates an audible signal indicative of reception of a transmitted signal, is coupled to the signal processing circuit.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: May 26, 1998
    Assignee: Dimango Products
    Inventor: Thomas G. Xydis
  • Patent number: 5680112
    Abstract: A wireless audible indication system comprising a transmitter and a receiver. An embodiment of the transmitter includes a modulator formed by a microprocessor and a radio frequency oscillator. The modulation format employed is selectable by the user using severable jumper wires. A battery status circuit is included which verifies the status of a battery within the transmitter. The modulator transmits a low battery bit to the receiver in order to alert the user of a weak transmitter battery. An embodiment of the receiver includes a superregenerative detector which produces an intermediate signal upon receiving a radio frequency signal. A signal processing circuit, which includes an active peak detector stage and a discrete comparator stage, is used to process the intermediate signal. A microprocessor controls a sound generator circuit in response to the processed intermediate signal.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: October 21, 1997
    Assignee: Dimango Products Corporation
    Inventor: Thomas G. Xydis
  • Patent number: 5680102
    Abstract: A wireless audible indication system comprising a transmitter and a receiver. An embodiment of the transmitter includes a modulator formed by a microprocessor and a radio frequency oscillator. The modulation format employed is selectable by the user using severable jumper wires. A battery status circuit is included which verifies the status of a battery within the transmitter. The modulator transmits a low battery bit to the receiver in order to alert the user of a weak transmitter battery. An embodiment of the receiver includes a superregenerative detector which produces an intermediate signal upon receiving a radio frequency signal. A signal processing circuit, which includes an active peak detector stage and a discrete comparator stage, is used to process the intermediate signal. A microprocessor controls a sound generator circuit in response to the processed intermediate signal.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: October 21, 1997
    Assignee: Dimango Products
    Inventor: Thomas G. Xydis