GB2079088B - Cordfree communication instrument - Google Patents

Cordfree communication instrument

Info

Publication number
GB2079088B
GB2079088B GB8118446A GB8118446A GB2079088B GB 2079088 B GB2079088 B GB 2079088B GB 8118446 A GB8118446 A GB 8118446A GB 8118446 A GB8118446 A GB 8118446A GB 2079088 B GB2079088 B GB 2079088B
Authority
GB
United Kingdom
Prior art keywords
cordfree
communication instrument
instrument
communication
cordfree communication
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
Application number
GB8118446A
Other versions
GB2079088A (en
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.)
Plantronics Inc
Original Assignee
Plantronics 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
Priority claimed from US06/165,070 external-priority patent/US4534614A/en
Application filed by Plantronics Inc filed Critical Plantronics Inc
Publication of GB2079088A publication Critical patent/GB2079088A/en
Application granted granted Critical
Publication of GB2079088B publication Critical patent/GB2079088B/en
Expired 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
    • H04B10/1143—Bidirectional transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/737—Characterised by transmission of electromagnetic waves other than radio waves, e.g. infrared waves
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Optical Communication System (AREA)
  • Mobile Radio Communication Systems (AREA)
GB8118446A 1980-07-01 1981-06-16 Cordfree communication instrument Expired GB2079088B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16506980A 1980-07-01 1980-07-01
US16506580A 1980-07-01 1980-07-01
US06/165,070 US4534614A (en) 1980-07-01 1980-07-01 Aspherical lens for concentrating diffuse optical radiation

Publications (2)

Publication Number Publication Date
GB2079088A GB2079088A (en) 1982-01-13
GB2079088B true GB2079088B (en) 1985-05-30

Family

ID=27389097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8118446A Expired GB2079088B (en) 1980-07-01 1981-06-16 Cordfree communication instrument

Country Status (3)

Country Link
CA (1) CA1200843A (en)
DE (1) DE3125413A1 (en)
GB (1) GB2079088B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121347U (en) * 1984-01-24 1985-08-16 ソニー株式会社 Optical transceiver device
US4757553A (en) * 1984-05-15 1988-07-12 Crimmins James W Communication system with portable unit
DE3434686A1 (en) * 1984-09-21 1986-04-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Cordless telephone
DE3506189C2 (en) * 1985-02-22 1986-12-11 ANT Nachrichtentechnik GmbH, 7150 Backnang Arrangement for the automatic alignment of a video camera to an object
CA1268569A (en) * 1986-11-10 1990-05-01 Temco Japan Co., Ltd. Telephone equipment utilizing ear microphone
GB8630152D0 (en) * 1986-12-17 1987-01-28 Gen Electric Co Plc Optical communication systems
US4882770A (en) * 1987-12-14 1989-11-21 H. M. Electronics, Inc. Wireless optical communication system
JPH01129933U (en) * 1988-02-26 1989-09-05
AU4506889A (en) * 1989-03-20 1990-10-22 Hm Electronics, Inc. Optical wavelength communication system and method of using same
DE3942428C2 (en) * 1989-12-21 1994-07-14 Siemens Ag Complementary device for telephone sets
US5087982A (en) * 1990-11-14 1992-02-11 Inter Innovation Lefebure Manufacturing Pulsed communication system
FR2676883B1 (en) * 1991-05-24 1995-09-01 Jegou Pierre DEVICE FOR TRANSMITTING THE SOUND OF AN AUDIO DEVICE.
US5754323A (en) * 1992-08-27 1998-05-19 Thermotrex Corporation Point-to-point laser communication device
DE4310873C2 (en) * 1993-04-02 1995-11-16 Rainer Lauterbach Cordless, removable headset
EP1343301A1 (en) * 1995-09-29 2003-09-10 Siemens Aktiengesellschaft Telecommunication apparatus
GB2323230A (en) * 1997-03-12 1998-09-16 Nokia Mobile Phones Ltd Portable communication terminal with both radio and infrared transceivers
US6081356A (en) * 1997-05-27 2000-06-27 Steelcase Development Inc. Integrated optical ports
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
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
US6577877B1 (en) * 2000-02-23 2003-06-10 Motorola, Inc. Wireless infrared peripheral interface for a communication device
WO2002065670A1 (en) * 2001-02-15 2002-08-22 Compagnie Des Inventions De L'atelier De L'innovation System for optically communicating with passive terminals and a transmitter for one such system
EP1961209A4 (en) * 2005-12-16 2012-09-05 Infra Com Ltd Wireless infrared multimedia system
DE102008003089A1 (en) * 2007-08-06 2009-02-26 Siemens Ag Data transmission system and method for transmitting data in a data transmission system
CN108323227B (en) * 2017-03-02 2021-07-06 深圳市泰德创新科技有限公司 Infrared receiver and infrared simultaneous interpretation system

Also Published As

Publication number Publication date
DE3125413A1 (en) 1982-04-01
GB2079088A (en) 1982-01-13
CA1200843A (en) 1986-02-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee