IT8322506A0 - Impianto di localizzazione elettronico per persone riceventi chiamate telefoniche. - Google Patents

Impianto di localizzazione elettronico per persone riceventi chiamate telefoniche.

Info

Publication number
IT8322506A0
IT8322506A0 IT8322506A IT2250683A IT8322506A0 IT 8322506 A0 IT8322506 A0 IT 8322506A0 IT 8322506 A IT8322506 A IT 8322506A IT 2250683 A IT2250683 A IT 2250683A IT 8322506 A0 IT8322506 A0 IT 8322506A0
Authority
IT
Italy
Prior art keywords
location system
telephone calls
receiving telephone
electronic location
people receiving
Prior art date
Application number
IT8322506A
Other languages
English (en)
Other versions
IT1169758B (it
IT8322506A1 (it
Inventor
Ramon H Aires
Roy A Ito
Charles Albert Clark Jr
Kenneth R Hackett
Original Assignee
Broomfield Colorado U S A A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Broomfield Colorado U S A A filed Critical Broomfield Colorado U S A A
Publication of IT8322506A0 publication Critical patent/IT8322506A0/it
Publication of IT8322506A1 publication Critical patent/IT8322506A1/it
Application granted granted Critical
Publication of IT1169758B publication Critical patent/IT1169758B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/022—One-way selective calling networks, e.g. wide area paging
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/022—Paging systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S379/00—Telephonic communications
    • Y10S379/913—Person locator or person-specific

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
IT22506/83A 1982-08-13 1983-08-10 Impianto di localizzazione elettronico per persone riceventi chiamate telefoniche IT1169758B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40788382A 1982-08-13 1982-08-13
US06/517,321 US4649385A (en) 1982-08-13 1983-07-26 Electronic locating system for persons receiving telephone calls

Publications (3)

Publication Number Publication Date
IT8322506A0 true IT8322506A0 (it) 1983-08-10
IT8322506A1 IT8322506A1 (it) 1985-02-10
IT1169758B IT1169758B (it) 1987-06-03

Family

ID=27020057

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22506/83A IT1169758B (it) 1982-08-13 1983-08-10 Impianto di localizzazione elettronico per persone riceventi chiamate telefoniche

Country Status (8)

Country Link
US (1) US4649385A (it)
EP (1) EP0118507A4 (it)
JP (1) JPS59501847A (it)
AU (1) AU560599B2 (it)
CA (1) CA1206565A (it)
ES (1) ES524878A0 (it)
IT (1) IT1169758B (it)
WO (1) WO1984000868A1 (it)

Families Citing this family (119)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6545589B1 (en) 1984-09-14 2003-04-08 Aspect Communications Corporation Method and apparatus for managing telecommunications
US5588037A (en) * 1984-09-14 1996-12-24 Accessline Technologies, Inc. Remote access telephone control system
US5375161A (en) 1984-09-14 1994-12-20 Accessline Technologies, Inc. Telephone control system with branch routing
US5752191A (en) 1984-09-14 1998-05-12 Accessline Technologies, Inc. Telephone control system which connects a caller with a subscriber AT A telephone address
US6201950B1 (en) 1984-09-14 2001-03-13 Aspect Telecommunications Corporation Computer-controlled paging and telephone communication system and method
DE3664447D1 (en) * 1985-04-04 1989-08-24 Sekisui Jushi Kk Inquiry system for detecting a selected object
US4752951A (en) * 1985-12-23 1988-06-21 Konneker Lloyd K Method of providing location dependent person locator service
US4912461A (en) * 1986-11-05 1990-03-27 Cellular Control Systems Corporation Apparatus and network for transferring packets of electronic signals and associated method
JP2693761B2 (ja) * 1987-04-03 1997-12-24 日本電気株式会社 移動通信方式
IL85558A (en) * 1987-04-30 1992-01-15 Motorola Inc Personal message receiving device with separate information presentation means
US4803487A (en) * 1987-04-30 1989-02-07 Motorola, Inc. Portable communications receiver with separate information presentation means
JP2582369B2 (ja) * 1987-05-13 1997-02-19 日本電気株式会社 ロ−ミング登録・解除方式
US4837568A (en) * 1987-07-08 1989-06-06 Snaper Alvin A Remote access personnel identification and tracking system
US4814763A (en) * 1987-12-14 1989-03-21 Motorola, Inc. Paging terminal apparatus with page forwarding capability and methodology thereof
US4897883A (en) * 1987-12-18 1990-01-30 Modcom Corporation Infrared remote control apparatus
US5099346A (en) * 1988-01-27 1992-03-24 Spectrix Corporation Infrared communications network
US5247380A (en) * 1988-01-27 1993-09-21 Spectrix Corp Infrared communications network
FR2626997B1 (fr) * 1988-02-09 1994-04-01 Sgs Thomson Microelectronics Sa Systeme de recherche de personnes dans un ensemble de locaux
US4935907A (en) * 1988-02-22 1990-06-19 Friedman Mark B Electronic homing system
US5027314A (en) * 1988-03-17 1991-06-25 United Manufacturing Co., Inc. Apparatus and method for position reporting
GB2230365B (en) * 1989-02-18 1993-05-26 Olivetti Research Ltd Mobile carrier tracking system
US5134645A (en) * 1989-06-30 1992-07-28 Berken James J Automatic and sustained association of users with communications paths
US5070329A (en) * 1989-12-04 1991-12-03 Motorola, Inc. On-site communication system with rf shielding having pager identification capability
JPH03270453A (ja) * 1990-03-20 1991-12-02 Fujitsu Ltd 自動追い掛け電話装置
US5241410A (en) * 1990-06-21 1993-08-31 Litephone Systems Ltd. Enhanced infrared-connected telephone system
US5140626A (en) * 1990-06-21 1992-08-18 Andrew D. Ory Paging system for establishing telephone connection between calling party and paged party
US5465082A (en) * 1990-07-27 1995-11-07 Executone Information Systems, Inc. Apparatus for automating routine communication in a facility
US5291399A (en) * 1990-07-27 1994-03-01 Executone Information Systems, Inc. Method and apparatus for accessing a portable personal database as for a hospital environment
US5455851A (en) * 1993-07-02 1995-10-03 Executone Information Systems, Inc. System for identifying object locations
US6958706B2 (en) * 1990-07-27 2005-10-25 Hill-Rom Services, Inc. Patient care and communication system
US5594786A (en) * 1990-07-27 1997-01-14 Executone Information Systems, Inc. Patient care and communication system
US5822544A (en) * 1990-07-27 1998-10-13 Executone Information Systems, Inc. Patient care and communication system
US5321396A (en) * 1991-02-07 1994-06-14 Xerox Corporation Indexing of audio/video data
DE69227269T2 (de) * 1991-02-25 1999-06-02 Motorola, Inc., Fort Worth, Tex. Gegenstandsortungssystem
JPH05130227A (ja) * 1991-11-07 1993-05-25 Fujitsu Ltd 無線カードによる移動先自動管理装置
US5361399A (en) * 1992-06-02 1994-11-01 Pagemart, Inc. Adaptive communication system for transmitting between base stations and portable transceivers via different data rate communication links
US5363425A (en) * 1992-06-29 1994-11-08 Northern Telecom Limited Method and apparatus for providing a personal locator, access control and asset tracking service using an in-building telephone network
US5343319A (en) * 1993-06-14 1994-08-30 Motorola, Inc. Apparatus for adapting an electrical communications port to an optical communications port
US5426425A (en) * 1992-10-07 1995-06-20 Wescom, Inc. Intelligent locator system with multiple bits represented in each pulse
US5491482A (en) * 1992-12-29 1996-02-13 David Sarnoff Research Center, Inc. Electronic system and method for remote identification of coded articles and the like
DE4303643A1 (de) * 1993-02-09 1994-08-11 Philips Patentverwaltung Röntgenanlage
US5627524A (en) * 1993-06-07 1997-05-06 Lifecom, Llc Infrared locator system
US5387993A (en) * 1993-06-25 1995-02-07 Precision Tracking Fm, Inc. Method for receiving and transmitting optical data and control information to and from remotely located receivers and transmitters in an optical locator system
US5561412A (en) * 1993-07-12 1996-10-01 Hill-Rom, Inc. Patient/nurse call system
US5838223A (en) * 1993-07-12 1998-11-17 Hill-Rom, Inc. Patient/nurse call system
US5548637A (en) * 1993-09-09 1996-08-20 Precision Tracking Fm, Inc. Method and apparatus for locating personnel and objects in response to telephone inquiries
US5841365A (en) * 1993-09-22 1998-11-24 Seattle Silicon Corporation Method and apparatus for communicating with a product label
US5471404A (en) * 1993-12-23 1995-11-28 Mazer; Murray S. Occlusion detection system for locator devices
US5515426A (en) * 1994-02-28 1996-05-07 Executone Information Systems, Inc. Telephone communication system having a locator
US6026156A (en) 1994-03-18 2000-02-15 Aspect Telecommunications Corporation Enhanced call waiting
US5465286A (en) * 1994-05-24 1995-11-07 Executone Information Systems, Inc. Apparatus for supervising an automatic call distribution telephone system
US5960337A (en) * 1994-09-01 1999-09-28 Trimble Navigation Limited Method for responding to an emergency event
US5513241A (en) * 1994-09-12 1996-04-30 Seiko Communications Systems, Inc. Low cost acknowledge-back system for a pager using existing infrastructure
US5907418A (en) * 1995-08-09 1999-05-25 Motorola, Inc. Apparatus for infrared channel and method therefor
US5724417A (en) * 1995-09-11 1998-03-03 Lucent Technologies Inc. Call forwarding techniques using smart cards
US6411682B1 (en) 1995-09-21 2002-06-25 Aspect Telecommunications Corporation Computer controlled paging and telephone communication system and method
US5699046A (en) * 1995-11-02 1997-12-16 Sensormatic Electronics Corporation EAS system employing central and local stations with shared functions
US5917425A (en) * 1996-01-22 1999-06-29 Wireless Communiations Products, Llc IR/RF locator
DE19724636A1 (de) * 1997-06-11 1998-12-17 Bosch Gmbh Robert Personenruf-Anlage
CA2308419A1 (en) 1997-11-03 1999-05-14 Robert J. Jennings Personnel and asset tracking method and apparatus
DE69816645T2 (de) 1997-11-07 2004-04-15 Hill-Rom Services, Inc., Batesville Thermisches regelungssystem für patienten
US7010369B2 (en) 1997-11-07 2006-03-07 Hill-Rom Services, Inc. Medical equipment controller
WO1999031867A1 (en) * 1997-12-18 1999-06-24 Motorola Inc. Method and apparatus for providing a power adjustable infrared signal
US6104512A (en) * 1998-01-23 2000-08-15 Motorola, Inc. Method for adjusting the power level of an infrared signal
US6298047B1 (en) 1998-05-20 2001-10-02 Steelcase Development Inc. Method and apparatus for establishing a data link between a portable data communications device and an interface circuit
US6359711B1 (en) 1998-05-20 2002-03-19 Steelcase Development Corporation System and method for supporting a worker in a distributed work environment
US6337856B1 (en) 1998-05-20 2002-01-08 Steelcase Development Corporation Multimedia data communications system
GB9827989D0 (en) * 1998-12-19 1999-02-10 Koninkl Philips Electronics Nv Location beacon system
US6594354B1 (en) * 1999-11-05 2003-07-15 Nortel Networks Limited Method and apparatus for alert control on a communications system
US20020023134A1 (en) * 2000-04-03 2002-02-21 Roskowski Steven G. Method and computer program product for establishing real-time communications between networked computers
US7844670B2 (en) * 2000-04-03 2010-11-30 Paltalk Holdings, Inc. Method and computer program product for establishing real-time communications between networked computers
EP1198113A1 (en) * 2000-10-13 2002-04-17 Dansk Mobiltelefon I/S Intelligent Call Manager for routing calls to subscriber's fixed or mobile telephone according to availability
US7957514B2 (en) 2000-12-18 2011-06-07 Paltalk Holdings, Inc. System, method and computer program product for conveying presence information via voice mail
CA2441512C (en) * 2001-03-09 2010-06-29 Radianse, Inc. Location system and methods
JP2005509312A (ja) 2001-03-30 2005-04-07 ヒル−ロム サービシーズ，インコーポレイティド 病院のベッドとネットワークシステム
CA2445161A1 (en) * 2001-05-08 2002-11-14 Hill-Rom Services, Inc. Article locating and tracking system
US7242306B2 (en) * 2001-05-08 2007-07-10 Hill-Rom Services, Inc. Article locating and tracking apparatus and method
US6970097B2 (en) * 2001-05-10 2005-11-29 Ge Medical Systems Information Technologies, Inc. Location system using retransmission of identifying information
CA2443678A1 (en) 2001-05-25 2002-12-05 Hill-Rom Services, Inc. A waste segregation compliance system
US7120238B1 (en) * 2001-07-12 2006-10-10 8X8, Inc. Sensor-controlled telephone system
AU2002326417A1 (en) * 2001-07-20 2003-03-03 Hill-Rom Services, Inc. Badge for a locating and tracking system
WO2003013417A1 (en) 2001-08-03 2003-02-20 Hill-Rom Services, Inc. Medication tracking system
CA2495686A1 (en) * 2002-09-27 2004-04-15 Hill-Rom Services, Inc. Universal communications, monitoring, tracking, and control system for a healthcare facility
WO2004105356A2 (en) * 2003-05-19 2004-12-02 Board Of Control Of Michigan Technological University Wireless local positioning system
WO2005022692A2 (en) 2003-08-21 2005-03-10 Hill-Rom Services, Inc. Plug and receptacle having wired and wireless coupling
WO2005045461A1 (en) * 2003-10-16 2005-05-19 Hill-Rom Services, Inc. Universal communications, monitoring, tracking, and control system for a healthcare facility
US7852208B2 (en) 2004-08-02 2010-12-14 Hill-Rom Services, Inc. Wireless bed connectivity
US7319386B2 (en) 2004-08-02 2008-01-15 Hill-Rom Services, Inc. Configurable system for alerting caregivers
US20060060955A1 (en) * 2004-09-22 2006-03-23 Texas Instruments Incorporated Stacked die infrared transceiver bus
US7486189B2 (en) * 2005-04-26 2009-02-03 Rf Code, Inc RFID systems and methods employing infrared localization
US20070015548A1 (en) * 2005-07-12 2007-01-18 Omega Patents, L.L.C. Vehicle tracker using common telephone number and unique identification number and associated methods
US20070072676A1 (en) * 2005-09-29 2007-03-29 Shumeet Baluja Using information from user-video game interactions to target advertisements, such as advertisements to be served in video games for example
KR100818297B1 (ko) * 2006-06-23 2008-03-31 한국전자통신연구원 적외선 및 무선 주파수통신을 이용하는 무선 센서 네트워크통신 방법 및 그 장치
US20080016746A1 (en) * 2006-07-21 2008-01-24 Lawrence Mathis Fellow Law Officers Encounter Warning System (FLOEWS)
US20080189132A1 (en) * 2007-02-05 2008-08-07 Matthew Minson Automatic Hospital Bed Accounting System
US8461968B2 (en) * 2007-08-29 2013-06-11 Hill-Rom Services, Inc. Mattress for a hospital bed for use in a healthcare facility and management of same
US7868740B2 (en) 2007-08-29 2011-01-11 Hill-Rom Services, Inc. Association of support surfaces and beds
US8082160B2 (en) 2007-10-26 2011-12-20 Hill-Rom Services, Inc. System and method for collection and communication of data from multiple patient care devices
US8598995B2 (en) 2008-02-22 2013-12-03 Hill-Rom Services, Inc. Distributed healthcare communication system
US9264151B1 (en) 2009-07-29 2016-02-16 Shopkick, Inc. Method and system for presence detection
US8489112B2 (en) 2009-07-29 2013-07-16 Shopkick, Inc. Method and system for location-triggered rewards
US8779924B2 (en) * 2010-02-19 2014-07-15 Hill-Rom Services, Inc. Nurse call system with additional status board
US9411934B2 (en) 2012-05-08 2016-08-09 Hill-Rom Services, Inc. In-room alarm configuration of nurse call system
US9314159B2 (en) 2012-09-24 2016-04-19 Physio-Control, Inc. Patient monitoring device with remote alert
US9830424B2 (en) 2013-09-18 2017-11-28 Hill-Rom Services, Inc. Bed/room/patient association systems and methods
US10127174B2 (en) * 2015-11-18 2018-11-13 Omega Patents, L.L.C. Multi-adaptor vehicle tracker controller and associated methods
US11686804B2 (en) 2016-05-25 2023-06-27 Invensense, Inc. Ultrasonic range sensing enables measured social contact
WO2017204802A1 (en) * 2016-05-25 2017-11-30 Chirp Microsystems, Inc. Ultrasonic beacon tracking
US11123014B2 (en) 2017-03-21 2021-09-21 Stryker Corporation Systems and methods for ambient energy powered physiological parameter monitoring
US11357682B2 (en) 2018-09-30 2022-06-14 Hill-Rom Services, Inc. Structures for causing movement of elements of a bed
US11229568B2 (en) 2018-09-30 2022-01-25 Hill-Rom Services, Inc. Mattress support for adding hospital bed functionality to an in-home bed
US11367535B2 (en) 2018-09-30 2022-06-21 Hill-Rom Services, Inc. Patient care system for a home environment
US11241347B2 (en) 2018-10-01 2022-02-08 Hill-Rom Services, Inc. Mattress support for adding hospital bed modular control system for upgrading a bed to include movable components
US11400001B2 (en) 2018-10-01 2022-08-02 Hill-Rom Services, Inc. Method and apparatus for upgrading a bed to include moveable components
US10734110B2 (en) 2018-12-05 2020-08-04 Hill-Rom Services, Inc. Caregiver locating tag having advanced functionality
US11911325B2 (en) 2019-02-26 2024-02-27 Hill-Rom Services, Inc. Bed interface for manual location
US10959534B2 (en) 2019-02-28 2021-03-30 Hill-Rom Services, Inc. Oblique hinged panels and bladder apparatus for sleep disorders
US11595527B2 (en) 2021-03-16 2023-02-28 Bank Of America Corporation Dynamic routing for communication systems
US11715056B2 (en) 2021-03-16 2023-08-01 Bank Of America Corporation Performance monitoring for communication systems

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657715A (en) * 1970-04-13 1972-04-18 William J Curtin Ultrasonic paging system
US3739327A (en) * 1970-12-16 1973-06-12 Dynamics Corp Massa Div Electroacoustic transducers of the mass loaded vibratile piston type
US3696384A (en) * 1971-07-08 1972-10-03 Recognition Devices Ultrasonic tracking and locating system
US3805265A (en) * 1971-10-06 1974-04-16 Rcds Enterprises Inc Radiant wave locating system
CH539440A (de) * 1971-12-24 1973-07-31 Autophon Ag Gerät zur Suche von je ein gleiches Gerät tragenden verschütteten Personen
US3805227A (en) * 1972-10-03 1974-04-16 Rcds Enterprises Inc Electronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
US4275385A (en) * 1979-08-13 1981-06-23 Bell Telephone Laboratories, Incorporated Infrared personnel locator system
US4392135A (en) * 1979-09-29 1983-07-05 Nippon Electric Co., Ltd. Paging receivers
US4378551A (en) * 1980-12-05 1983-03-29 Motorola, Inc. Radio signal receiving apparatus with a security circuitry
FI66696C (fi) * 1981-06-12 1984-11-12 Saehkoeliikkeiden Oy Foerfarande foer foerverkligande av en till en person bunden anropningsprocess
US4545071A (en) * 1982-11-12 1985-10-01 Motorola, Inc. Portable radio for a zoned data communications system communicating message signals between portable radios and a host computer

Also Published As

Publication number Publication date
ES8501904A1 (es) 1984-12-01
EP0118507A4 (en) 1985-02-28
US4649385A (en) 1987-03-10
JPS59501847A (ja) 1984-11-01
EP0118507A1 (en) 1984-09-19
AU560599B2 (en) 1987-04-09
AU1889683A (en) 1984-03-07
ES524878A0 (es) 1984-12-01
IT1169758B (it) 1987-06-03
WO1984000868A1 (en) 1984-03-01
IT8322506A1 (it) 1985-02-10
CA1206565A (en) 1986-06-24

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