ATE127602T1 - Personenrufmelder mit rückquittierung mit senderfrequenz-steuerungsvorrichtung. - Google Patents

Personenrufmelder mit rückquittierung mit senderfrequenz-steuerungsvorrichtung.

Info

Publication number
ATE127602T1
ATE127602T1 AT89901806T AT89901806T ATE127602T1 AT E127602 T1 ATE127602 T1 AT E127602T1 AT 89901806 T AT89901806 T AT 89901806T AT 89901806 T AT89901806 T AT 89901806T AT E127602 T1 ATE127602 T1 AT E127602T1
Authority
AT
Austria
Prior art keywords
ack
frequency
pagers
group
signal
Prior art date
Application number
AT89901806T
Other languages
English (en)
Inventor
Kazimierz Siwiak
James M Keba
Francis Robert Steel
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ATE127602T1 publication Critical patent/ATE127602T1/de

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. visible personal calling systems or remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • 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
    • H04W84/025—One-way selective calling networks, e.g. wide area paging with acknowledge back capability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/48—Sea-anchors; Drogues
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems, e.g. audible personal calling systems
    • G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Audible And Visible Signals (AREA)
AT89901806T 1988-01-07 1988-12-12 Personenrufmelder mit rückquittierung mit senderfrequenz-steuerungsvorrichtung. ATE127602T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/141,655 US4891637A (en) 1988-01-07 1988-01-07 Acknowledge back pager with apparatus for controlling transmit frequency

Publications (1)

Publication Number Publication Date
ATE127602T1 true ATE127602T1 (de) 1995-09-15

Family

ID=22496612

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89901806T ATE127602T1 (de) 1988-01-07 1988-12-12 Personenrufmelder mit rückquittierung mit senderfrequenz-steuerungsvorrichtung.

Country Status (9)

Country Link
US (1) US4891637A (de)
EP (1) EP0394357B1 (de)
JP (2) JPH0681091B2 (de)
KR (1) KR0131596B1 (de)
AT (1) ATE127602T1 (de)
AU (1) AU2944589A (de)
CA (1) CA1285994C (de)
DE (1) DE3854434T2 (de)
WO (1) WO1989006410A1 (de)

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US5603088A (en) * 1995-02-28 1997-02-11 Motorola, Inc. Method and apparatus for determining a quality level of an analog signal in a radio communication system
US5673036A (en) * 1995-03-27 1997-09-30 Motorola, Inc. Selective call receiver memory validation and acknowledgement and method therefor
US5564091A (en) * 1995-03-29 1996-10-08 Motorola, Inc. Method and apparatus for operating an automatic frequency control in a radio
US5602831A (en) * 1995-03-31 1997-02-11 Seiko Communications Systems, Inc. Optimizing packet size to eliminate effects of reception nulls
US5537398A (en) * 1995-05-12 1996-07-16 Motorola, Inc. Apparatus for multi-rate simulcast communications
AU705213B2 (en) * 1995-06-06 1999-05-20 Terion, Inc. Determining propagating and clear frequency in wireless data communications network
US5734963A (en) * 1995-06-06 1998-03-31 Flash Comm, Inc. Remote initiated messaging apparatus and method in a two way wireless data communications network
US5589844A (en) * 1995-06-06 1996-12-31 Flash Comm, Inc. Automatic antenna tuner for low-cost mobile radio
US5765112A (en) * 1995-06-06 1998-06-09 Flash Comm. Inc. Low cost wide area network for data communication using outbound message specifying inbound message time and frequency
US5535191A (en) * 1995-06-28 1996-07-09 Seiko Communications Systems, Inc. Method and apparatus for switching between redundant hardware in a wireless data communication system
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US5686901A (en) * 1995-10-10 1997-11-11 Motorola, Inc. System and method for queuing and batching messages for wireless transmission
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US6370375B1 (en) 1997-04-14 2002-04-09 At&T Corp. Voice-response paging device and method
US6311056B1 (en) 1998-05-21 2001-10-30 Cellemetry Llc Method and system for expanding the data capacity of a cellular network control channel
US6738647B1 (en) 1999-04-23 2004-05-18 Numerex Corporation Method and system for expanding the data payload of data messages transported via a cellular network control channel
US6718177B1 (en) * 1999-09-20 2004-04-06 Cellemetry, Llc System for communicating messages via a forward overhead control channel for a programmable logic control device
US7783508B2 (en) * 1999-09-20 2010-08-24 Numerex Corp. Method and system for refining vending operations based on wireless data
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US7546141B2 (en) * 2000-05-23 2009-06-09 Robert Leon Hybrid communication system and method
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Also Published As

Publication number Publication date
EP0394357A4 (en) 1992-05-06
US4891637A (en) 1990-01-02
CA1285994C (en) 1991-07-09
DE3854434D1 (de) 1995-10-12
EP0394357A1 (de) 1990-10-31
DE3854434T2 (de) 1996-04-18
AU2944589A (en) 1989-08-01
KR900700980A (ko) 1990-08-17
EP0394357B1 (de) 1995-09-06
WO1989006410A1 (en) 1989-07-13
JPH02504455A (ja) 1990-12-13
JPH0681091B2 (ja) 1994-10-12
JPH02502364A (ja) 1990-08-02
KR0131596B1 (ko) 1998-10-01

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee