FI925606A0 - INFRAFOED TELEFON MED TILLHOERANDE HANDAPPARAT OCH BASISANORDNING - Google Patents

INFRAFOED TELEFON MED TILLHOERANDE HANDAPPARAT OCH BASISANORDNING

Info

Publication number
FI925606A0
FI925606A0 FI925606A FI925606A FI925606A0 FI 925606 A0 FI925606 A0 FI 925606A0 FI 925606 A FI925606 A FI 925606A FI 925606 A FI925606 A FI 925606A FI 925606 A0 FI925606 A0 FI 925606A0
Authority
FI
Finland
Prior art keywords
tillhoerande
infrafoed
basisanordning
handapparat
telefon
Prior art date
Application number
FI925606A
Other languages
Finnish (fi)
Other versions
FI925606A (en
Inventor
Curt G Reichert
Axel Fischer
Original Assignee
Sensys Ag
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 DE19924220289 external-priority patent/DE4220289A1/en
Priority claimed from DE19924222694 external-priority patent/DE4222694A1/en
Application filed by Sensys Ag filed Critical Sensys Ag
Publication of FI925606A0 publication Critical patent/FI925606A0/en
Publication of FI925606A publication Critical patent/FI925606A/en

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Telephone Set Structure (AREA)
  • Mobile Radio Communication Systems (AREA)
FI925606A 1991-12-11 1992-12-10 Infrafoed telefon med tillhoerande handapparat och basisanordning FI925606A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4140823 1991-12-11
DE19924220289 DE4220289A1 (en) 1992-06-20 1992-06-20 Infrared telephone system with handset and base unit
DE19924222694 DE4222694A1 (en) 1991-12-11 1992-07-10 Cordless telephone with IR link between handset and fixed station - has variable-frequency oscillator at each end for modulation and level control of respective IR transmitters

Publications (2)

Publication Number Publication Date
FI925606A0 true FI925606A0 (en) 1992-12-10
FI925606A FI925606A (en) 1993-06-12

Family

ID=27203184

Family Applications (1)

Application Number Title Priority Date Filing Date
FI925606A FI925606A (en) 1991-12-11 1992-12-10 Infrafoed telefon med tillhoerande handapparat och basisanordning

Country Status (9)

Country Link
EP (1) EP0558812A3 (en)
JP (1) JPH066430A (en)
KR (1) KR930015406A (en)
AR (1) AR247963A1 (en)
AU (1) AU3012792A (en)
BR (1) BR9204996A (en)
CA (1) CA2085047A1 (en)
FI (1) FI925606A (en)
MX (1) MX9207193A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277850B1 (en) * 1995-01-18 1997-11-12 Edico Srl ENTERTAINMENT EQUIPMENT, SUCH AS A RECEIVER AND / OR REPRODUCER OF SIGNALS, IN PARTICULAR TELEVISION, WITH REMOTE CONTROL
JP4824169B2 (en) * 1999-03-30 2011-11-30 クゥアルコム・インコーポレイテッド Method and apparatus for automatically adjusting speaker gain and microphone gain in a mobile telephone

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823931A1 (en) * 1978-05-31 1979-12-06 Siemens Ag Telephone subscriber's appts. using PPM IR radiation - transmits voice signals from handset to main unit connected to telephone line obviating extension wires
GB2120905B (en) * 1982-01-25 1986-03-19 Viking Phone Co Inc Cordless telephone
FI86937C (en) * 1989-11-01 1992-10-26 Salora Myynti Oy TELEFONSYSTEM
DE4005517A1 (en) * 1990-02-22 1991-09-05 Sensys Ag Bidirectional signal transmission system using IR light - has identical devices for simultaneous transmission in both directions

Also Published As

Publication number Publication date
MX9207193A (en) 1994-03-31
CA2085047A1 (en) 1993-06-12
AU3012792A (en) 1993-06-17
JPH066430A (en) 1994-01-14
BR9204996A (en) 1993-06-15
KR930015406A (en) 1993-07-24
EP0558812A3 (en) 1995-04-05
AR247963A1 (en) 1995-04-28
FI925606A (en) 1993-06-12
EP0558812A2 (en) 1993-09-08

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Legal Events

Date Code Title Description
FD Application lapsed