ITTO910704A1 - Gruppo elettronico per contenere animali entro aree definite. - Google Patents

Gruppo elettronico per contenere animali entro aree definite.

Info

Publication number
ITTO910704A1
ITTO910704A1 IT91TO000704A ITTO910704A ITTO910704A1 IT TO910704 A1 ITTO910704 A1 IT TO910704A1 IT 91TO000704 A IT91TO000704 A IT 91TO000704A IT TO910704 A ITTO910704 A IT TO910704A IT TO910704 A1 ITTO910704 A1 IT TO910704A1
Authority
IT
Italy
Prior art keywords
animal
composite field
multiplicity
collar
sent
Prior art date
Application number
IT91TO000704A
Other languages
English (en)
Inventor
Lee D Weinstein
Original Assignee
Torrington Prod Ventures
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 Torrington Prod Ventures filed Critical Torrington Prod Ventures
Publication of ITTO910704A0 publication Critical patent/ITTO910704A0/it
Publication of ITTO910704A1 publication Critical patent/ITTO910704A1/it

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0263—System arrangements wherein the object is to detect the direction in which child or item is located
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K15/00—Devices for taming animals, e.g. nose-rings or hobbles; Devices for overturning animals in general; Training or exercising equipment; Covering boxes
    • A01K15/02—Training or exercising equipment, e.g. mazes or labyrinths for animals ; Electric shock devices; Toys specially adapted for animals
    • A01K15/021—Electronic training devices specially adapted for dogs or cats
    • A01K15/023—Anti-evasion devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0241—Data exchange details, e.g. data protocol
    • G08B21/0247—System arrangements wherein the alarm criteria uses signal strength

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Animal Husbandry (AREA)
  • Zoology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Housing For Livestock And Birds (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Un sistema di contenimento per animali comprende un trasmettitore atto ad essere disposto presso un'area in cui l'animale deve essere contenuto, un'antenna trasmittente ed un collare che deve essere indossato dall'animale. Il collare ha una molteplicità di ricevitori di segnali radio ciascuno avente una antenna ricevente altamente direzionale con le antenne riceventi della molteplicità di ricevitori aventi i loro assi di massima sensibilità orientati in direzioni diverse, ed un analizzatore per determinare intensità di campo composite dai segnali radio ricevuti dalle antenne riceventi scende al di sotto di valori prestabiliti. Quando l'intensità di campo composita scende al di sotto di un primo valore prestabilito, si invia all'animale un primo segnale di avviso, mentre un secondo e differente segnale di avviso viene inviato quando l'intensità di campo composita scende al di sotto di un secondo valore.
IT91TO000704A 1990-12-10 1991-09-18 Gruppo elettronico per contenere animali entro aree definite. ITTO910704A1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/625,313 US5067441A (en) 1990-12-10 1990-12-10 Electronic assembly for restricting animals to defined areas

Publications (2)

Publication Number Publication Date
ITTO910704A0 ITTO910704A0 (it) 1991-09-18
ITTO910704A1 true ITTO910704A1 (it) 1992-06-10

Family

ID=24505495

Family Applications (1)

Application Number Title Priority Date Filing Date
IT91TO000704A ITTO910704A1 (it) 1990-12-10 1991-09-18 Gruppo elettronico per contenere animali entro aree definite.

Country Status (10)

Country Link
US (1) US5067441A (it)
JP (1) JPH04258233A (it)
AU (1) AU632450B2 (it)
BR (1) BR9104054A (it)
CA (1) CA2051740C (it)
DE (1) DE4130775A1 (it)
FR (1) FR2670084B1 (it)
GB (1) GB2250882A (it)
IT (1) ITTO910704A1 (it)
SE (1) SE9102493L (it)

Families Citing this family (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170172A (en) * 1990-12-10 1992-12-08 Torrington Products Venture, Inc. Electronic assembly for range finding using radio wave signal strength
US5298883A (en) * 1992-01-17 1994-03-29 Pilney Richard G Proximity alert system
US5207179A (en) * 1992-05-13 1993-05-04 Arthur David L Pet confinement system
US5241923A (en) * 1992-07-23 1993-09-07 Pole/Zero Corporation Transponder control of animal whereabouts
US5617814A (en) * 1993-01-08 1997-04-08 Elexis Corporation Method of and apparatus for training an animal
US5640932A (en) * 1993-03-18 1997-06-24 Elexis Corporation Apparatus for and method of deterring entry of an animal into a barrier region
US5408956A (en) * 1993-06-21 1995-04-25 The United States Of America As Represented By The Secretary Of Agriculture Method and apparatus for controlling animals with electronic fencing
US5460124A (en) * 1993-07-15 1995-10-24 Perimeter Technologies Incorporated Receiver for an electronic animal confinement system
US5435271A (en) * 1993-08-19 1995-07-25 Invisible Fence Company, Inc. Multi-channel animal control device with external data communication
US5445900A (en) * 1993-08-18 1995-08-29 Invisible Fence Company, Inc. Electronic device having a removable battery pack assembly
US5425330A (en) * 1993-08-19 1995-06-20 Invisible Fence Company, Inc. Animal control device
US5575242A (en) * 1994-03-21 1996-11-19 Davis; James E. Animal control system
US5381129A (en) * 1994-03-23 1995-01-10 Radio Systems, Inc. Wireless pet containment system
US5852403A (en) * 1994-03-23 1998-12-22 Radio Systems Corporation Wireless pet containment system
US5565850A (en) * 1994-08-05 1996-10-15 Yarnall, Jr.; Robert G. Electronic confinement system for animals using modulated radio waves
US5610588A (en) * 1994-08-05 1997-03-11 Yarnall, Jr.; Robert G. Electronic confinement system for animals using modulated radio waves
US5559498A (en) * 1994-12-30 1996-09-24 Innotek Inc. Combination confinement and remote training system
DE59602041D1 (de) * 1995-03-16 1999-07-08 Siemens Ag Kommunikationsanlage
US5606936A (en) * 1995-04-25 1997-03-04 Davis; James E. Animal restraining system
US5913284A (en) * 1996-02-27 1999-06-22 Innotek, Inc. Stimulation device and technique
US5868100A (en) * 1996-07-08 1999-02-09 Agritech Electronics L.C. Fenceless animal control system using GPS location information
US5799618A (en) * 1996-08-12 1998-09-01 Innotek, Inc. Combination confinement system and bark inhibitor
US6446049B1 (en) 1996-10-25 2002-09-03 Pole/Zero Corporation Method and apparatus for transmitting a digital information signal and vending system incorporating same
US6064308A (en) * 1996-10-25 2000-05-16 Pole/Zero Corporation RF signaling system and system for controlling the whereabouts of animals using same
US5787841A (en) * 1996-10-29 1998-08-04 Joint Techno Concepts International, Inc. Apparatus and method for electronic exclusion and confinement of animals relative to a selected area
US6600422B2 (en) * 1996-10-29 2003-07-29 Joint Techno Concepts International, Inc. Apparatus and method for electronic exclusion and confinement of animals relative to a selected area
US5794569A (en) * 1996-10-29 1998-08-18 Joint Techno Concepts International, Inc. Apparatus and method for electronic confinement of animals
US6657544B2 (en) 1996-10-29 2003-12-02 Joint Techno Concepts International, Inc. Apparatus and method for electronic exclusion and confinement of animals relative to a selected area
US5769032A (en) * 1997-02-03 1998-06-23 Yarnall, Sr.; Robert G. Method and apparatus for confining animals and/or humans using spread spectrum signals
US5868103A (en) * 1997-07-30 1999-02-09 Radio Systems Corporation Method and apparatus for controlling an animal
US6079367A (en) * 1997-10-10 2000-06-27 Dogwatch, Inc. Animal training apparatus and method
US6166643A (en) * 1997-10-23 2000-12-26 Janning; Joseph J. Method and apparatus for controlling the whereabouts of an animal
US6114957A (en) * 1998-02-19 2000-09-05 Innotek Pet Products, Inc. Pet locator system
US6019066A (en) * 1998-03-16 2000-02-01 Taylor; Todd T. Animal confinement/training system
US5952925A (en) * 1998-05-28 1999-09-14 Secker; Gordon P. Collar for a cat for warning a bird of the presence of the cat
US5939988A (en) * 1998-07-31 1999-08-17 Neyhart; Gene Michael Child proximity monitor and alarm
US6095092A (en) * 1999-02-18 2000-08-01 Chou; Wayne W. Apparatus and method for confining an animal within a boundary
AUPP944299A0 (en) * 1999-03-25 1999-04-22 Chief Executive Officer Of The Department Of Agriculture An apparatus and method for controlling animal movement
WO2000065549A1 (fr) * 1999-04-21 2000-11-02 Jocelyne Lanoue Dispositif d'alarme et ses utilisations
US6147610A (en) * 1999-09-17 2000-11-14 Yarnall, Jr.; Robert G. External deterrent arrangement for electronic containment systems
US6230661B1 (en) 1999-09-17 2001-05-15 Robert G. Yarnall, Jr. External battery arrangement for electronic containment systems
US6201477B1 (en) 1999-09-17 2001-03-13 Robert G. Yarnall, Jr. Switched capacitor power supply for an electronic animal containment system
US7042360B2 (en) * 2000-06-09 2006-05-09 Light Elliott D Electronic tether for portable objects
US7064669B2 (en) * 2000-06-09 2006-06-20 Light Elliott D Electronic tether for portable objects
US6748902B1 (en) * 2000-06-09 2004-06-15 Brian Boesch System and method for training of animals
US20050284413A1 (en) * 2004-06-10 2005-12-29 Brian Boesch Training of animals using wireless communication and having spontaneous adjustment
US7375638B2 (en) * 2000-06-09 2008-05-20 Robelight, Llc Electronic tether for portable objects
US7937042B2 (en) * 2000-06-09 2011-05-03 Dot Holdings, Llc Animal training and tracking system using RF identification tags
GB2363504A (en) * 2000-06-16 2001-12-19 Nokia Mobile Phones Ltd A mobile phone including a device for preventing loss or theft
GB2367174B (en) * 2000-09-25 2002-08-07 Gadget Guard Ltd A method and apparatus for security tagging
US6431122B1 (en) * 2000-11-21 2002-08-13 Innotek, Inc. Wireless confinement and training system for an animal
WO2002073562A1 (en) * 2001-03-12 2002-09-19 Eureka Technologies Partners, Llc Article locator system
US6825768B2 (en) * 2001-06-14 2004-11-30 Dogwatch, Inc. Adaptive pet containment system and method
US6944421B2 (en) * 2001-11-15 2005-09-13 T.F.H. Publications, Inc. Method and apparatus for providing training information regarding a pet
US6581546B1 (en) 2002-02-14 2003-06-24 Waters Instruments, Inc. Animal containment system having a dynamically changing perimeter
FR2836742B1 (fr) * 2002-03-04 2006-05-26 Patrick Chevalier Systeme de surveillance et de controle de l'eloignement d'un animal, notamment d'un chien
US7042361B2 (en) * 2003-10-02 2006-05-09 Kazdin Ronald S Child monitoring, communication and locating system
US7174855B2 (en) * 2004-05-06 2007-02-13 Innotek, Inc. Rising stimulation modification
NZ552437A (en) * 2004-07-16 2009-01-31 Commw Scient Ind Res Org An apparatus and method for the virtual fencing of an animal
WO2006039117A2 (en) * 2004-09-21 2006-04-13 Skyfence Inc. Positioning system that uses signals from a point source
US7552699B2 (en) * 2004-10-20 2009-06-30 Radio Systems Corporation Transponding of a signal using the same antenna
KR100718841B1 (ko) * 2004-10-30 2007-05-16 김준수 동물 귀환 유도 장치
US20060112901A1 (en) * 2004-11-16 2006-06-01 Gomez David R Electronic pet containment system with improved transmitter with constant field generation
FR2893821B1 (fr) 2005-11-30 2008-01-11 Lacme Holding Sa "collier pour animal domestique comportant un circuit electronique"
US20070186870A1 (en) * 2006-01-24 2007-08-16 Michael Westrick Wireless confinement and training system for an animal
US20080156277A1 (en) * 2007-01-03 2008-07-03 Radio Systems Corporation Animal Training Device Using a Vibration Probe to Deliver a Vibration Stimulus to an Animal
US8069823B2 (en) 2007-01-03 2011-12-06 Radio Systems Corporation Vibration stimulus delivery device
US7918190B2 (en) * 2007-01-17 2011-04-05 Radio Systems Corporation Electronic animal containment system with direction of approach determination
WO2011032055A2 (en) 2009-09-12 2011-03-17 Titan Pet Products, Inc. Systems and methods for pet containment, training, and tracking
WO2011056732A1 (en) * 2009-11-04 2011-05-12 Scottsdale Inventions, Llc Apparatus and system for augmented detainee restraint
US8692676B2 (en) 2010-02-01 2014-04-08 Perimeter Technologies Inc. Time of flight animal monitoring
USD632853S1 (en) 2010-08-04 2011-02-15 Titan Pet Products, Inc. Electronic pet tag
US9526229B2 (en) 2010-11-30 2016-12-27 Perimeter Technologies, Inc. Animal training system and method
JP5652233B2 (ja) * 2011-02-04 2015-01-14 富士通株式会社 検知装置、検知システム、および検知方法
US8754770B2 (en) * 2011-11-08 2014-06-17 Lockheed Martin Corporation System and method for beyond perimeter detection and early warning
US9293027B2 (en) 2011-12-28 2016-03-22 Jason Wilson System for repelling a pet from a predetermined area
USD673334S1 (en) * 2012-01-16 2012-12-25 Guo xu wei Receiver
USD665952S1 (en) * 2012-01-16 2012-08-21 Guo xu wei Receiver
CN102661081B (zh) * 2012-05-23 2016-02-10 四川省电力公司泸州电业局 电力维修现场用安全围栏
CN102819929A (zh) * 2012-08-24 2012-12-12 池杭 羊用无线放牧管理系统
US10342218B1 (en) 2013-03-15 2019-07-09 GPSip, Inc. GPS dog fence incorporating location guidance and positive reinforcement training
US20150216142A1 (en) 2013-03-15 2015-08-06 GPSip, Inc. Wireless Location Assisted Zone Guidance System
US10165755B1 (en) 2013-03-15 2019-01-01 GPSip, Inc. Wireless location assisted zone guidance system region lookup
US9961884B1 (en) 2013-03-15 2018-05-08 GPSip, Inc. Wireless location assisted zone guidance system compatible with large and small land zones
US10172325B1 (en) 2013-03-15 2019-01-08 GPSip, Inc. Wireless location assisted zone guidance system incorporating dynamically variable intervals between sequential position requests
US10064390B1 (en) 2013-03-15 2018-09-04 GPSip, Inc. Wireless location assisted zone guidance system incorporating a multi-zone containment area
US10251371B1 (en) * 2014-03-18 2019-04-09 GPSip, Inc. Wireless location assisted zone guidance system incorporating a system and apparatus for predicting the departure of an animal from a safe zone prior to the animal actually departing
US10470437B1 (en) 2013-03-15 2019-11-12 GPSip, Inc. Wireless location assisted zone guidance system
US10292365B1 (en) 2013-03-15 2019-05-21 GPSip, Inc. Wireless location assisted zone guidance system incorporating shepherding of wayward dogs
CA2850787A1 (en) 2013-04-30 2014-10-30 Radio Systems Corporation Systems and methods of defining boundary regions for animals
US10624319B2 (en) 2014-03-18 2020-04-21 GPSip, Inc. Wireless location assisted zone guidance system incorporating a rapid collar mount and non-necrotic stimulation
US10165756B1 (en) 2014-03-18 2019-01-01 GPSip, Inc. Wireless location assisted zone guidance system incorporating a rapid collar mount and non-necrotic stimulation
US10098324B2 (en) 2015-04-09 2018-10-16 Jonathan O. Baize Herd control method and system
US9637085B2 (en) 2015-07-20 2017-05-02 Ford Global Technologies, Llc Pet restraint system
WO2019178222A1 (en) * 2018-03-14 2019-09-19 Protect Animals with Satellites, LLC Corrective collar utilizing geolocation technology
ES2992436T3 (es) 2018-03-17 2024-12-12 Gpsip Inc Sistema inalámbrico de guiado de zona asistido por localización que incorpora la transmisión segura de la localización
DE102018126176B4 (de) * 2018-10-22 2020-08-20 Micro-Sensys Gmbh Vorrichtung und Verfahren zur Steuerung einer Flugöffnung einer Bienenbeute
CA3125545A1 (en) 2018-12-31 2020-07-09 GPSip, Inc. Wireless location assisted zone guidance system incorporating a rapid collar mount and non-necrotic stimulation
CA3154730A1 (en) 2019-09-18 2021-03-25 GPSip, Inc. Wireless location assisted zone guidance system incorporating secure transmission of location
US11490597B2 (en) 2020-07-04 2022-11-08 Radio Systems Corporation Systems, methods, and apparatus for establishing keep out zones within wireless containment regions
US12219933B1 (en) 2020-09-24 2025-02-11 Protect Animals with Satellites, LLC System and method for tracking an animal and for preventing the animal from attacking another animal
WO2022192251A1 (en) 2021-03-08 2022-09-15 Protect Animals with Satellites, LLC Corrective collar utilizing geolocation technology
CN113100097B (zh) * 2021-04-13 2022-08-26 重庆市畜牧科学院 一种猪只福利设备
US12171192B1 (en) 2022-02-14 2024-12-24 GPSip, Inc. Graphical shepherding
US12557787B1 (en) 2023-02-27 2026-02-24 GPSip, Inc. Wireless location assisted zone guidance system predictive ramped stimulation

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742507A (en) * 1970-09-10 1973-06-26 J Pirre Automatic golf bag cart
US3753421A (en) * 1971-12-20 1973-08-21 R Peck Method and apparatus for controlling an animal
US3777712A (en) * 1972-02-01 1973-12-11 Jetco Electronic Ind Inc Electric animal trainer
CA975841A (en) * 1973-05-22 1975-10-07 Richard M. Peck Method and apparatus for controlling an animal
US3980051A (en) * 1975-05-16 1976-09-14 Lawrence Peska Associates, Inc. Range triggered animal training system
US4136338A (en) * 1977-03-08 1979-01-23 James D. Pauls & Associates, Ltd. Perimeter alarm apparatus
FR2455843A1 (fr) * 1979-05-02 1980-11-28 Jacob Michel Cloture electronique pour animaux
US4335682A (en) * 1981-03-18 1982-06-22 Tri-Tronics, Inc. Animal training apparatus
US4675656A (en) * 1984-03-16 1987-06-23 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US4593273A (en) * 1984-03-16 1986-06-03 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US4733633A (en) * 1986-11-20 1988-03-29 Yarnall Sr Robert G Electronic confinement arrangement for animals
US4745882A (en) * 1986-11-20 1988-05-24 Yarnall Sr Robert G Electronic confinement and communications arrangement for animals
US4814751A (en) * 1987-02-27 1989-03-21 Wildlife Materials, Inc. Patient tracking system
US4785291A (en) * 1987-03-06 1988-11-15 Hawthorne Candy C Distance monitor especially for child surveillance
US4777478A (en) * 1987-05-06 1988-10-11 Gordon S. Hirsch Apparatus for monitoring persons or the like
US4766847A (en) * 1987-06-01 1988-08-30 John Venczel Apparatus and system for animal training
US4871997A (en) * 1987-06-30 1989-10-03 Tech-Age International Corporation Proximity sensor apparatus
BE1001344A3 (fr) * 1988-01-15 1989-10-03 Agritronics Sa Dispositif a sangles destine a des animaux.
US4898120A (en) * 1988-06-16 1990-02-06 Torrington Product Ventures, Inc. Animal training and restraining system
US4967695A (en) * 1989-06-23 1990-11-06 Invisible Fence Company, Inc. System for controlling the movement of an animal

Also Published As

Publication number Publication date
JPH04258233A (ja) 1992-09-14
BR9104054A (pt) 1992-08-04
US5067441A (en) 1991-11-26
AU8375691A (en) 1992-06-11
FR2670084B1 (fr) 1993-06-04
FR2670084A1 (fr) 1992-06-12
GB2250882A (en) 1992-06-17
CA2051740A1 (en) 1992-06-11
GB9120094D0 (en) 1991-11-06
SE9102493D0 (sv) 1991-08-30
CA2051740C (en) 1994-01-11
SE9102493L (sv) 1992-06-11
DE4130775A1 (de) 1992-06-11
ITTO910704A0 (it) 1991-09-18
AU632450B2 (en) 1992-12-24

Similar Documents

Publication Publication Date Title
CA2051740A1 (en) Electronic assembly for restricting animals to defined areas
ES2020690A6 (es) Antena formada por conductores dobles y sistema electronico de vigilancia de articulos correspondientes.
WO1996028944A3 (en) A two-way paging system and apparatus
DE50309584D1 (de) Verfahren zur übertragung von informationen in einem mimo-funkkommunikationssystem und funkkommunikationssystem
GB1423418A (en) Method and installation for the detection of a source generating electromagnetic oscillations
CA2068875A1 (en) Satellite based global paging system
DK0629878T3 (da) Jordovervågnings-radarsystem, især til lufthavne
CA2071490A1 (en) Satellite based acknowledge-back paging system
EP1047216A3 (en) System and method for protecting a receiver from jamming interference
EP1263168A3 (en) Wireless communication apparatus
FR2678437B1 (fr) Antenne mixte pour reception de signaux emis simultanement par satellite et par stations terrestres, notamment pour la reception de signaux de radiodiffusion sonore numerique.
EP0084400A3 (en) Detection system
GB891754A (en) Improvements in or relating to radio systems for supplying information relating to the interior of a living body
AR042570A1 (es) Aparato y sistema para monitorear articulos
EP1211519A3 (en) GPS receiver and GPS receiving system
CA2042563A1 (en) Method and apparatus for transmitting a signal with an offset which follows a received signal
JPS55163922A (en) Communication unit with limited communication area
EP1033829A3 (en) Supplemental satellite communication enhancement technique
ES8704053A1 (es) Una antena para un sistema transmisor-receptor a modo de enlace en un satelite.
CA2232105A1 (en) Helicopter towed electromagnetic surveying system
ATE11089T1 (de) Verfahren zur ueberwachung einer funkempfangsanlage.
JPS5526735A (en) Multiplex radio repeater
JPS55110441A (en) Selective callout communication system
JPS6478180A (en) Present place confirming device
DE20220431U1 (de) Vorrichtung zur Ortung und Überwachung von Personen und Objekten

Legal Events

Date Code Title Description
0003 Withdrawn