DE69506545D1 - Leitungsungebundenes kommunikationssystem unter verwendung von sichtlinienstrahlung - Google Patents

Leitungsungebundenes kommunikationssystem unter verwendung von sichtlinienstrahlung

Info

Publication number
DE69506545D1
DE69506545D1 DE69506545T DE69506545T DE69506545D1 DE 69506545 D1 DE69506545 D1 DE 69506545D1 DE 69506545 T DE69506545 T DE 69506545T DE 69506545 T DE69506545 T DE 69506545T DE 69506545 D1 DE69506545 D1 DE 69506545D1
Authority
DE
Germany
Prior art keywords
pct
sight
transmitter
line
radiation
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69506545T
Other languages
English (en)
Other versions
DE69506545T2 (de
Inventor
Michael Knowles
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IML Ltd
Original Assignee
IML Ltd
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 IML Ltd filed Critical IML Ltd
Publication of DE69506545D1 publication Critical patent/DE69506545D1/de
Application granted granted Critical
Publication of DE69506545T2 publication Critical patent/DE69506545T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1149—Arrangements for indoor wireless networking of information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)
  • Selective Calling Equipment (AREA)
  • Radio Relay Systems (AREA)
  • Lasers (AREA)
  • Resistance Heating (AREA)
  • Luminescent Compositions (AREA)
  • Small-Scale Networks (AREA)
  • Transmitters (AREA)
DE69506545T 1994-06-16 1995-06-16 Leitungsungebundenes kommunikationssystem unter verwendung von sichtlinienstrahlung Expired - Fee Related DE69506545T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9412031A GB9412031D0 (en) 1994-06-16 1994-06-16 Improvements in signalling devices employing line of sight radiation
PCT/GB1995/001419 WO1995034963A1 (en) 1994-06-16 1995-06-16 Free space communications system employing line of sight radiation

Publications (2)

Publication Number Publication Date
DE69506545D1 true DE69506545D1 (de) 1999-01-21
DE69506545T2 DE69506545T2 (de) 1999-05-27

Family

ID=10756795

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69506545T Expired - Fee Related DE69506545T2 (de) 1994-06-16 1995-06-16 Leitungsungebundenes kommunikationssystem unter verwendung von sichtlinienstrahlung

Country Status (11)

Country Link
US (1) US5870214A (de)
EP (1) EP0765546B1 (de)
JP (1) JP3665073B2 (de)
AT (1) ATE174461T1 (de)
AU (1) AU693564B2 (de)
CA (1) CA2193065A1 (de)
DE (1) DE69506545T2 (de)
DK (1) DK0765546T3 (de)
ES (1) ES2128063T3 (de)
GB (1) GB9412031D0 (de)
WO (1) WO1995034963A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9522238D0 (en) * 1995-10-31 1996-01-03 Marvin Anthony M D Communication system
US6320900B1 (en) * 1998-10-30 2001-11-20 Compaq Computer Corporation Methods and arrangements for transmitting high speed data over reduced bandwidth communication resources
US6657550B1 (en) 1999-10-12 2003-12-02 Steve Flinn Wireless lock-out system, apparatus and method for using the same
US20040208602A1 (en) * 2001-12-01 2004-10-21 James Plante Free space optical communications link tolerant of atmospheric interference
US20030215780A1 (en) * 2002-05-16 2003-11-20 Media Group Wireless Wireless audience polling and response system and method therefor
GB2425692B (en) 2002-08-15 2007-03-21 Iml Ltd A participant response system and method
US20040109692A1 (en) * 2002-12-09 2004-06-10 James Plante FSO communication systems having high performance detectors
US20070134643A1 (en) * 2003-11-05 2007-06-14 Kabushiki Kaisha Media Technical Answer totalizer/anayzer
US8254310B2 (en) 2007-06-19 2012-08-28 Fleetwood Group, Inc. Audience response system and method with multiple base unit capability
US8340059B2 (en) 2004-10-04 2012-12-25 Fleetwood Group, Inc. Response system and method with dynamic personality assignment
WO2006041743A2 (en) 2004-10-04 2006-04-20 Fleetwood Group, Inc. Response system and method with dynamic personality assignment
US7533813B2 (en) * 2005-04-21 2009-05-19 Iml Limited Wireless voting method
US7924759B1 (en) 2005-08-08 2011-04-12 H-Itt, Llc Validation method for transmitting data in a two-way audience response teaching system
US7286498B1 (en) 2005-08-09 2007-10-23 H-Itt, Llc Validation method and data structures for wireless communications
DE102007036096A1 (de) * 2007-08-01 2009-02-05 Kaltenbach & Voigt Gmbh Zahnärztliches Handgerät zum Erstellen von Messergebnissen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2431937C2 (de) * 1974-07-03 1982-04-01 Sennheiser Electronic Kg, 3002 Wedemark Verfahren zur drahtlosen optischen Nachrichtenübertragung
US4377870A (en) * 1978-12-21 1983-03-22 General Electric Company Electronic audience polling system
US5099346A (en) * 1988-01-27 1992-03-24 Spectrix Corporation Infrared communications network
US5093786A (en) * 1989-01-27 1992-03-03 Fleetwood Furniture Company, Inc. Remote response system
DE3937096A1 (de) * 1989-11-07 1991-05-08 Siemens Nixdorf Inf Syst System zum uebertragen von daten zwischen mehreren teilnehmerstationen eines lokalen kommunikationsnetzes
US5495357A (en) * 1994-02-14 1996-02-27 Machina, Inc. Apparatus and method for recording, transmitting, receiving and playing sounds
US5570367A (en) * 1994-07-29 1996-10-29 Lucent Technologies Inc. Asymmetric protocol for wireless communications

Also Published As

Publication number Publication date
DK0765546T3 (da) 1999-08-16
ATE174461T1 (de) 1998-12-15
JP3665073B2 (ja) 2005-06-29
ES2128063T3 (es) 1999-05-01
EP0765546B1 (de) 1998-12-09
CA2193065A1 (en) 1995-12-21
JPH10501937A (ja) 1998-02-17
US5870214A (en) 1999-02-09
DE69506545T2 (de) 1999-05-27
AU693564B2 (en) 1998-07-02
EP0765546A1 (de) 1997-04-02
WO1995034963A1 (en) 1995-12-21
GB9412031D0 (en) 1994-08-03
AU2681095A (en) 1996-01-05

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: IML LTD., LIPHOOK, HAMPSHIRE, GB

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee