With Automatic Dialing Or Transmission Of Recorded Audio Message Patents (Class 379/51)
  • Patent number: 5694452
    Abstract: An emergency telecommunications device comprising a telecommunications control circuit having an automatic dialing circuit preprogrammed to dial 911; a digital-to-analog voice circuit to transmit one of three predetermined messages to an emergency operator when the control circuit is activated by one of three activation buttons: a medical emergency activation control button, a fire activation control button, and a police activation control button; and a touch tone decoding circuit that allows an emergency operator to play first and second user programmable messages and to control various functions of the telecommunications device. The fire, medical emergency and police control activation buttons are normally covered by a pivoting lid member. Closure of the lid member actuates a device activation control switch. When the lid member is in a fully closed position the telecommunications device is in the OFF state.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: December 2, 1997
    Inventor: Eric E. Bertolet
  • Patent number: 5692215
    Abstract: A system is provided for monitoring a user in a user living area. The system includes a system controller and an activity detection subsystem. The activity detection subsystem monitors a daily living activity of the user and provides information representative of the daily living activity to the system controller. The system controller includes a control circuit which generates a control signal in response to the daily living activity information obtained by the activity detection subsystem. Control information from the system controller is applied by way of a control information communication channel both to the activity detection subsystem and to a remote monitoring site. The activity detection subsystem may be a system for determining the movement of the user around the home, medication compliance by the user, problems with usage of stoves or other potentially dangerous appliances, and selected auxiliary appliances.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: November 25, 1997
    Assignee: Gerotech, Inc.
    Inventors: David M. Kutzik, Anthony P. Glascock, Douglas L. Chute, Thomas T. Hewett, Barbara G. Hornum
  • Patent number: 5633919
    Abstract: A system and method for processing telephone calls and providing enhanced services is presented. The call processing system includes a billing system that processes billing information records for completed calls. In this type of processing, the billing system applies rate information stored in a rate file to the completed call parameters contained within the billing information record. Derived billing information is subsequently stored in a toll file. The billing system also uses rate information stored in the rate file to respond in real-time to rate quote requests. Upon receipt of a rate quote request from a requesting system, the billing system retrieves rate information from the rate file, calculates a cost/minute of a desired call, and returns a rate quote to the requesting system.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 27, 1997
    Assignee: LinkUSA Corporation
    Inventors: Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Eric M. Busch
  • Patent number: 5559859
    Abstract: A telecommunications system that performs page-connect paging is disclosed. The telecommunications system of this invention includes a paging system (28) that is designed to receive calls from page-connect paging system subscribers. Once such a call is received, the system (28) parks the call on hold while sending a page to the subscriber. The subscriber can then call the paging terminal (28) to automatically be connected with the calling party. The system further includes a cordless telephone-2 system (26) wherein each of the system subscribers is further provided with a portable handset (26) from which he can access the publicly switched telephone network. Subscribers with the handset, upon receiving a page-connect page, can automatically dial the paging terminal (28) to be connected to their calling parties.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: September 24, 1996
    Assignee: Glenayre Electronics, Inc.
    Inventors: Susan W. S. Dai, Donald W. Gayton, Brian G. Laird, Randy T. Tkatch, Sonny Bettis, Marc Fitzhugh, Shandton Williams, Phillip Lowman, Julio Gonzalez
  • Patent number: 5559867
    Abstract: An automated phone calling system includes a database comprising phone numbers and one or more data fields associated with each phone number. Phone numbers (callees) in the database are selected based on the data fields associated therewith. A recorded voice message is transmitted to callees through a plurality of outgoing phone lines, and callees are prompted to enter one of several TOUCH TONE codes, which is recorded. The database record for the callee is automatically updated based on the TOUCH TONE response code, so that the updated field may be used to select whether to send a future call to the callee.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: September 24, 1996
    Assignee: Sigma/Micro Corporation
    Inventors: Al Langsenkamp, William D. Arnold, Scott Arnold
  • Patent number: 5555286
    Abstract: A cellular phone based emergency vessel/vehicle location system which includes a navigation unit to determine position and speech synthesis to modulate a transmitter with the emergency message includes a combined dialer and activation detector, in which activation may either be from the cellular phone keypad or from a panic button, a Lojack/hijack sensor, a car theft alarm, airbag deployment, a man down sensor, or other form of remote activation. Upon activation, the activation detector/dialer causes DTMF tones to be generated for telephone number dialing. After dialing, the transmitter for the transceiver is modulated with the emergency message in natural speech. In one embodiment, the dialer and activation detector is actuated from the keypad of the cellular phone, such as 911, *CG, *SP or other predetermined activation code.
    Type: Grant
    Filed: August 14, 1995
    Date of Patent: September 10, 1996
    Assignee: Tendler Technologies, Inc.
    Inventor: Robert K. Tendler
  • Patent number: 5454035
    Abstract: An electronic apparatus capable of automatically dialing a phone number includes a unit for storing data, a unit for registering data of the phone number and a predetermined data on the storing unit, a unit for generating a tone signal for dialing the phone number, and a unit for controlling the tone signal generating unit to generate a tone signal corresponding to the phone number in case that the predetermined data is registered on the storing unit.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: September 26, 1995
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiro Oba, Eichika Matsuda, Taizou Nishida
  • Patent number: 5448618
    Abstract: An emergency mobilization system and a method of emergency mobilization is disclosed. The system includes a network of mobilization devices each including apparatus For producing messages and apparatus for transmitting at least one message by telephone to each of a plurality of recipient apparatus each associated with at least one recipient. The method includes the steps of instructing an originator mobilization device to perform a specified mobilization and instruction by said originator mobilization device to a plurality of mobilization devices belonging to a network each to mobilize a specific group of recipients.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: September 5, 1995
    Assignee: Comberse Technology Inc.
    Inventor: Nimrod Sandlerman
  • Patent number: 5416826
    Abstract: An electronically-operated gun safe which has an telephone system that establishes an interactive telephone contact with law enforcement authorities when the gun safe is opened with an emergency key word. A non-emergency key word allows the gun safe to be opened without establishing a telephone contact with law enforcement authorities. The telephone system provides an alarm when the gun safe is disconnected from an external telephone wire without first opening the gun safe with the non-emergency key word. A 9-1-1 key word allows a telephone contact to be established without opening the gun safe. A master key word allows the gun safe to be opened if the emergency key word is lost or forgotten. The gun safe is locked out for a time period when successive incorrect key words are attempted and a tamper display alerts an owner that an unauthorized entry has been attempted.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: May 16, 1995
    Inventor: Gerald A. Butler
  • Patent number: 5414758
    Abstract: It is herein recognized that in an audio signal processing system, a DRAM chip for storing digitized audio signals and selected to include at least one inoperative memory location, is acceptable for use as a storage medium in that no noticeable error is produced on playback of the recorded signal due to the sampling rate of the audio signal and due to the relatively low rate of defects allowed. Furthermore, the use of a less-than-perfect DRAM chip for storing audio information is acceptable due to the substantially non-critical nature of audio signals, as opposed to the extremely critical nature of computer data.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: May 9, 1995
    Assignee: Thomson Consumer Electronics, Inc.
    Inventor: Henry H. Kuok
  • Patent number: 5333172
    Abstract: An apparatus for emergency dialing and oneway communication by telephone includes an autodialing circuit for dialing a preselected emergency telephone number. The circuit is activated by a switch and provides communication of audio information from the vicinity of the device to an emergency services operator during an emergency situation such as a criminal assault of a convenience store. The apparatus is characterized by the presence of a microphone, and the absence of a speaker connection for transmitting the voice of the emergency services operator. In this manner, the criminal assailant is not made aware that police have been contacted.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: July 26, 1994
    Inventor: Michael B. Stevens
  • Patent number: 5333173
    Abstract: A method and apparatus for utilizing a public switched telephone network which includes a voice messaging system (VMS) for providing to subscribers a checkup call service to initiate at times determined by the subscriber checkup calls to a premise designated by the subscriber. If a particular person at the premise does not respond appropriately to the personal checkup call or the telephone goes unanswered or is off-hook for a specified period of time a list of persons designated by the subscriber is notified of such failure to respond. The service is based upon utilization of the existing VMS equipment. The subscriber has the option to specify an activation schedule which specifies the days of the week on which the service is to be active. An activation schedule disable and enable control is provided. In a second mode the checkup is effected via a customer premise equipment (CPE) device which may be wall-mountable or stand alone and connected to the telephone network.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: July 26, 1994
    Assignee: Bell Atlantic Network Services, Inc.
    Inventors: John W. Seazholtz, Brian L. Carrier
  • Patent number: 5319698
    Abstract: A security system for detecting and signalling the presence of abnormal security or hazardous conditions, such as unauthorized entry, glass breakage, fire, smoke, high water level, in individual units, such as a boat, a recreational vehicle, an automobile, which are located or stored in a given security area.. The security system comprises sensor units which, when actuated, transmit coded signals through the atmosphere which identifies each sensor unit and the individual unit on which it is located. A receiver on the individual unit recognizes only the coded signals from sensor units which are on the same individual unit as the receiver. A coded output signal is provided to a slave transmitter on the individual unit which identifies the particular sensor unit which was actuated. The slave transmitter provides a coded transmission signal to a local security station which identifies the particular sensor unit which was actuated and the individual unit where the actuated sensor unit resides.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: June 7, 1994
    Assignee: Boat Buddy Sentry, Ltd.
    Inventors: William E. Glidewell, Eddie F. Furr, III, Mark J. Witham
  • Patent number: 5317620
    Abstract: A battery-powered infrared sensor security system capable of operating on a single set of batteries for a minimum of one year. The system is connected to a telephone line and employs a bidirectional dual-tone multiple frequency (DTMF) tone generator/receiver to allow communication to and from a remote location. The system status may be checked from the remote location and certain system parameters may be varied from the remote location. The system uses a Fresnel lens arrangement and a pair of infrared sensors to provide a substantially uniform field of coverage of 180.degree.. The system also uses real time digital analysis of the output signals from the infrared sensors. The digital analysis uses time sequence analysis of the output signals, performs variance measurements between the current measurement of the infrared sensor signals and the stored time sequence, coherence measurements between the two sensors, and can compare measured amplitude spectra to predefined signature spectra entered by the user.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: May 31, 1994
    Assignee: Orca Technology, Inc.
    Inventor: Milton O. Smith
  • Patent number: 5317626
    Abstract: A wake-up and reminder system for a telephone takes advantage of the attention-drawing characteristics of the telephone ringer to awaken and/or remind a person of various tasks or appointments. The wake-up and reminder system for a telephone is provided with modular jacks for connecting between the telephone and the wall jack. A timer is provided for establishing an alarm time, and a relay responsive to the timer is provided for disconnecting the telephone temporarily from the telephone line. The system includes a ringing device for ringing the telephone at a predetermined rate and an off-hook detection circuit for detecting when the telephone has been taken off the hook. In addition, a second relay is provided responsive to the off-hook detection circuit for disconnecting the telephone from the ringing device and connecting the telephone to a recorder which plays a pre-recorded message.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: May 31, 1994
    Inventors: Brian Jaynes, Steven Slowikowski
  • Patent number: 5272465
    Abstract: An automatic alarm code converter wherein a plurality of alarm dialers report alarm conditions using security industry standard pulsed tone, FSK, or DTMF formats and call through the PSTN to the converter. The converter comprises a telephone line interface/decoder, a microprocessor which correlates the received alarm ID and code with addresses in a page data memory. The page data memory contains a pager number and an associated alphanumeric ASCII message The code converter further comprises a software program embodied in an EPROM which instructs on the automatic formatting of the page data into the PET/TAP protocol. The code converter communicates the page data to the paging system through a full duplex serial port either by direct RS232 connection or remotely through a dial-out modem using the PET/TAP protocol.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: December 21, 1993
    Assignee: Telemessaging Devices, Inc.
    Inventor: Douglas L. Meares, Jr.
  • Patent number: 5195126
    Abstract: A telecommunications system which includes a 911 and voice message service platform for providing such services as telephone answering, voice mail and call completion. An emergency/safety notification system is incorporated and includes a monitor/router device passively connected to the 911 trunk to detect number identification signals. A first storage is provided with the monitor/router and has stored therein data identifying telephone stations subscribing to the emergency alert service. The monitor/router is connectable to the VMS platform and transmits thereto the identification of subscriber stations whose identity is detected from the 911 trunk. The VMS platform is provided with second storage for storing voice data signals generated by the subscriber stations in addition to data including the identity of destination telephone stations to whom the voice data is to be provided.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: March 16, 1993
    Assignee: Bell Atlantic Network Services, Inc.
    Inventors: Brian Carrier, Kathleen A. Maier
  • Patent number: 5095502
    Abstract: A unit for detection and signalizing of functional defects for public lighting. A unit characterized by the fact that it comprises, for the one part, an emitter module (21) with which each street lamp is equipped, preferably located in its post, at the level of the junction box, the emitter module being equipped with a detector for current consumption (23) using the alternative network of the supply line as the carrier of a detection signal, and for the other part, of a receiver module (22) located in the supply cabinet of the same zone, this receiver module managed by a microprocessor which transmits a defect signal to the control room over a telephone line. This invention is of interest for manufacturers and installers of materials, equipment and components for public lighting.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: March 10, 1992
    Inventor: Jean-Luc Finzel
  • Patent number: 5016269
    Abstract: In an improved cellular telephone network, which in the illustrated embodiment, is a roadside emergency callbox system, and in which each cellular callbox includes programmable circuitry for call progress processing, various tones transmitted in a telephone exchange are detected, decoded and responsively acted upon by the callbox according to program control. Each callbox is further capable of receiving and decoding DTMF tones from the telephone exchange to allow arbitary information, including alphanumeric information for local display at the callbox, to be received and interactively processed subject to on-site program control. Still further, each of the callboxes within the cellular network can be remotely programmed by a maintenance computer to call a newly designated telephone number in the event of activation of the callbox which can be utilized in the case of the need for extraordinary emergency response.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: May 14, 1991
    Assignee: GTE Mobilnet, Incorporated
    Inventor: Stephen W. Rogers
  • Patent number: 4996703
    Abstract: A monitoring and control system has a programmable apparatus connected to equipment to be monitored.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: February 26, 1991
    Inventor: William F. Gray
  • Patent number: 4993059
    Abstract: An alarm system for a protected premises includes an alarm sensor for generating an alarm signal in the event of an alarm condition. A cellular-type radio/telephone transceiver is located at the protected premises and includes circuitry for generating and transmitting a unique identification number of the transceiver and a send signal for wireless communication with a cellular site. Structure is provided for connecting the alarm signal line to the cellular-type radio/transceiver such that upon receipt of the alarm signal, the cellular-type radio/transceiver will transmit the unique identification number and the send signal to the cellular site with no transmission of the telephone number of an alarm monitoring station to thereby enable the cellular site to transmit the alarm condition to the alarm monitoring station.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: February 12, 1991
    Assignee: Cableguard, Inc.
    Inventors: James L. Smith, Gregory M. Howison
  • Patent number: 4937855
    Abstract: A building security system for coupling to a building telephone line which includes a building subscriber telephone line connected to a subscriber telephone set on one end and to a central office line at the other end. The central office line leads to a central office exchange. The building security system controls communication between a central office exchange caller, a subscriber and a visitor at an intercom station in order to allow subscriber control of visitor entry and for allowing entry without subscriber control to authorized personnel. The system includes a micro-controller, a non-volatile memory coupled to micro-controller which is programmable for storing system parameters including security entry codes and a building door latch of an entrance door which is coupled to the micro-controller. The latch is operative in response to a control signal from the micro-controller to unlock the associated entrance door.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: June 26, 1990
    Assignee: Viscount Industries Limited
    Inventors: Wayne McNab, Jim Siu
  • Patent number: 4920556
    Abstract: An improved telephone with three built in features that provide added conveniences and additional benefits for the user. These features are: Money Saver Timer, which tells the caller the amount of time is left of the current message or toll unit on a long distance call; Telephone Panic Switch, when pressed, will activate a circuit to automatically call and broadcast an emergency message to a group of pre-stored numbers; Music On Hold cards, which allow the user to play different music programs for the HOLD feature. These cards can be changed frequently to provide different music programs to the frequent caller.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: April 24, 1990
    Inventor: Keith K. Wong
  • Patent number: 4908845
    Abstract: In one exemplary embodiment, an audio/telephone communication system for verbally handicapped individuals is disclosed that comprises a programmed computer, and a matrix of touch-sensitive contacts carrying an overlay removably attached thereto and symbolically displaying for sensory perception and random selection by an operator each of a plurality of message commands associated with a preselected and prerecorded vocabulary of spoken messages, and in response to the operator selection the contact matrix generating data signals identifying the selected messages and control commands for application to the computer. An expansion memory is interconnected to the computer and has stored therein the preselected command data and digital message data representative of the message vocabulary.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: March 13, 1990
    Assignee: Joyce Communication Systems, Inc.
    Inventor: Paul D. Little
  • Patent number: 4891835
    Abstract: A device according to the invention is compatible with conventional magnetic tape loggers. Such a device is termed a message repeater, and it records and replays audio signals forming messages on a message channel, such as a telephone line or a radio channel. The message repeater includes circuits for converting the audio signals on a particular channel into corresponding digital signals and circuits for storing the digital signals. The message repeater also includes circuits for selectively recalling the signals that were stored and circuits for converting the signals that were recalled into analog audio signals. Messages on the selected message channel may be recorded and later replayed by the message repeater. Preferably, the message repeater includes a display with indications of the relative locations and lengths of the stored messages as well as a cursor or index.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: January 2, 1990
    Assignee: Dictaphone Corporation
    Inventors: Keith K. W. Leung, Kathleen Quinn, John D. Goldson, Wayne C. Hoffman
  • Patent number: 4868558
    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 receivers. 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: September 19, 1989
    Assignee: Telefind Corp.
    Inventors: Andrew A. Andros, Thomas J. Campana, Jr., Gary F. Thelen, Robert A. Kinast
  • Patent number: 4856047
    Abstract: A remote telemetry unit (RTU) for use in an automated telemetry paging system for providing remote pager notification of changes in selected operating parameters measured at a specific site location. The selected parameters and the unacceptable changes therein are provided in the form of a plurality of electrical status signals each representative of one of the selected parameters. The RTU includes a programmed microprocessor, including data input/output circuits, a memory circuit, a central processing unit (CPU) and a real time clock. The RTU also includes a status signal receiving circuit for receiving and electronically isolating and digitally shaping the received status signals. An interrogation circuit controlled by the CPU scans the digital status signals, and a discrimination circuit controlled by the CPU reads the digital status signals and determines if a valid deviated or changed status signal is present.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: August 8, 1989
    Assignee: BD Systems, Inc.
    Inventor: James R. Saunders
  • Patent number: 4850005
    Abstract: In a telephone answering device, artificial intelligence sends an outgoing message to the caller upon receipt of an incoming call. When the caller responds, the artificial intelligence determines whether the caller's voice is registered with the device, and if so, particular messages are played to the caller. If the caller's voice is not registered, the caller is notified by the device, and he may receive his specific message by sending a touch tone code (e.g., telephone number) from his telephone.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: July 18, 1989
    Assignee: Hashimoto Corporation
    Inventor: Kazuo Hashimoto
  • Patent number: 4821308
    Abstract: A telephone answering system with paging function is adapted to transmit a prerecorded outgoing message to a calling party through a closed loop of telephone lines established upon reception or a telephone calling signal, and record an incoming message from the calling party after the outgoing message is transmitted. The system operates to receive a signal representative of the caller's telephone number sent from the calling party through the telephone lines to store the same signal in a memory, and then automatically and temporarily release the closed loop, and thereafter reestablish the closed loop for calling a preset telephone number of a paging center. Further, the system transmits the stored signal representing the caller's telephone number to the paging center through the telephone lines upon reception of an answer from the center.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: April 11, 1989
    Assignee: Hashimoto Corporation
    Inventor: Kazuo Hashimoto
  • Patent number: 4821027
    Abstract: A security system for monitoring and detecting security breaches in a home comprises a central monitor and a plurality of remote sensors for one or more of fire, smoke, intrusion, appliance operation and the like. Each of the sensors has a transmitter for transmitting an electronic message when the sensor goes into an alarm condition. The central monitor has a receiver to receive the electronic messages. An electronic microprocessor system decodes the received electronic message and takes the necessary course of action in accordance with a programmable scheme retained in electronic memory of the microprocessor system. The central monitor has a speech synthesizer responding to inputs from the microprocessor system. A keyboard is provided on the central monitor for allowing a user to interact with the security system. The microprocessor system is programmable via the keyboard to permit the user to customize the programmable scheme to render it unique to the user.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: April 11, 1989
    Assignee: Dicon Systems Limited
    Inventors: John Mallory, Thomas A. D. Burgmann, Gary Lennartz
  • Patent number: 4802208
    Abstract: A hot-line device for telephone sets includes a logic AND gate circuit serving as a central unit with its output to be electrically connected to a control circuit through the keyboard of a telephone set, and its inputs respectively coupled with a hot-line triggering circuit, a dial-tone detection circuit and a ringing detection and delay circuit separately disposed in the telephone set for automatically effecting dialing operation during an emergency situation. Alternatively, the logic AND gate circuit can be replaced with a microprocessor for performing automatic dialing operation through a predetermined program.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: January 31, 1989
    Assignee: Inventa Electronics Co., Ltd.
    Inventor: Kou-I Yeh
  • Patent number: 4692742
    Abstract: A security system wherein a plurality of locations are monitored by sensors which transmit alarm signals to a central control station by radio or telephone, each alarm signal being encoded to identify the particular sensor location and alarm condition. The control station comprises a computer which correlates the received alarm signals with information stored in the computer memory to identify which of a plurality of satellite stations are to be notified of a particular alarm condition at a particular monitored location, what correlated information is to be transmitted to such satellite station, and whether to effect such transmission by radio or telephone. The computer actuates a radio or telephone transmitter in the control station to transmit correlated signals to the appropriate satellite stations, and may also actuate a speech synthesizer so that such signals may be transmitted as synthetic speech.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: September 8, 1987
    Inventors: David T. Raizen, Richard A. Wilmot
  • Patent number: 4689811
    Abstract: A method and apparatus relating to telecommunication systems of the early care telephone type, in which a plurality of subscribers (TA) may be connected to one or more supervision centers (A-C) via a telephone exchange (EX). If any of the centers are night service-connected or out of operation for some reason, a call from a subscriber will be automatically re-routed to another center. When a subscriber equipment unit (SE) associated with a subscriber (TA) has called the telephone number of a duty center (A), the call is answered automatically by an automatic telephone answerer (ATS) or by other equipment which can execute a call diverter function. Instead of a spoken message, there is recorded on the automatic telephone answerer a signal which enables receiving a new telephone number in the subscriber unit (SE), which number is recorded on the telephone answerer.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: August 25, 1987
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Carl A. Lennstrom, Mats I. Claeson
  • Patent number: 4656319
    Abstract: A novel alarm system tester is disclosed for use in verifying the operation of subscriber stations in an alarm system of a type having a central monitoring station and a plurality of subscriber stations operative to automatically dial the telephone number of the central monitoring station and to report the occurrence of an alarm event to the central monitoring station. The tester in accordance with the present invention permits the verification of the automatic dialing function of the subscriber station and additionally, provides for verification that the subscriber station can transmit messages to the central monitoring station in accordance with a defined communication protocol. The entire test sequence is completed in a single telephone communication.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: April 7, 1987
    Assignee: Lifeline Systems, Inc.
    Inventor: Theodore Bially
  • Patent number: 4628152
    Abstract: A method and an equipment for wireless transmission of telephone calls between a stationary unit (1) connected to a telephone set (3) at a short distance from the stationary unit provides that all pairs of units (1, 3) have access to a plurality of common duplex radio speech channels for transmission of calls, and to a common radio signalling channel for transmission of signals referring to connection and disconnection of the speech channels. The radio speech channels are assigned after adaptive channel scanning in that they are listened to before a call, and a channel selected which is idle with respect to calls. The selection of an idle channel takes place automatically with the use of radio receivers (12, 25), channel selectors (15, 28) and circuits (16, 29) incorporated in both units.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: December 9, 1986
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Dag E. Akerberg