AR247963A1 - Telefono infrarrojo con aparato portatil o manual correspondiente y aparato base. - Google Patents

Telefono infrarrojo con aparato portatil o manual correspondiente y aparato base.

Info

Publication number
AR247963A1
AR247963A1 AR92323880A AR32388092A AR247963A1 AR 247963 A1 AR247963 A1 AR 247963A1 AR 92323880 A AR92323880 A AR 92323880A AR 32388092 A AR32388092 A AR 32388092A AR 247963 A1 AR247963 A1 AR 247963A1
Authority
AR
Argentina
Prior art keywords
frequency
station
oscillator
modulated
base station
Prior art date
Application number
AR92323880A
Other languages
English (en)
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/de
Priority claimed from DE19924222694 external-priority patent/DE4222694A1/de
Application filed by Sensys Ag filed Critical Sensys Ag
Application granted granted Critical
Publication of AR247963A1 publication Critical patent/AR247963A1/es

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)

Abstract

TELEFONO INFRAROJO CON UNA PRIMERA ESTACION, ESPECIALMENTE UN APARATO PORTATIL, CON MICROFONO, ALTAVOZ, UN EMISOR IR, UN RECEPTOR IR Y UNA SEGUNDA ESTACION, ESPECIALMENTE UNA ESTACION DE SERVICIO INSTALADA FIJA, CON EMISOR IR, RECEPTOR IR, CONEXION A LA RED TELEFONICA; CADA UNA DE LAS ESTACIONES PRESENTA: UN UNICO OSCILADOR DE FRECUENCIA, QUE CONTROLA LA FRECUENCIA MODULADA POR LAS SENALES A TRANSMITIR ASI COMO LA POTENCIA DEL EMISOR IR, CORRESPONDIENTE Y LA FRECUENCIA A UNA ETAPA DE MEZCLADO IR, LOS OSCILADORES DE LA PRIMERA Y DE LA SEGUNDA ESTACION POSEEN FRECUENCIAS MEDIAS DIFERENTES, LA SENAL PROPORCIONADA POR ALGUNO DE LOS RECEPTORES CORRESPONDIENTES SE MEZCLA CON LA FRECUENCIA MODULADA DEL CORRESPONDIENTE OSCILADOR EN LA ETAPA DE MEZCLADO Y LA SUMA O DIFERENCIA DE FRECUENCIAS QUE SE PRODUCE POR LA MEZCLA A PARTIR DE LA FRECUENCIA CAPTADA Y DE LA FRECUENCIA MODULADA DEL OSCILADOR, SE DEMODULA POR MEDIO DE UN MODULADOR DE FRECUENCIA Y DESDE LA SENAL RESULTANTE SE OBTIENE LA FU NCION RECEPTORA.
AR92323880A 1991-12-11 1992-12-11 Telefono infrarrojo con aparato portatil o manual correspondiente y aparato base. AR247963A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4140823 1991-12-11
DE19924220289 DE4220289A1 (de) 1992-06-20 1992-06-20 Handapparat für Telephon
DE19924222694 DE4222694A1 (de) 1991-12-11 1992-07-10 Infrarot-telefon

Publications (1)

Publication Number Publication Date
AR247963A1 true AR247963A1 (es) 1995-04-28

Family

ID=27203184

Family Applications (1)

Application Number Title Priority Date Filing Date
AR92323880A AR247963A1 (es) 1991-12-11 1992-12-11 Telefono infrarrojo con aparato portatil o manual correspondiente y aparato base.

Country Status (9)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277850B1 (it) * 1995-01-18 1997-11-12 Edico Srl Apparecchio per l'intrattenimento, quale un ricevitore e/o riproduttore di segnali, in particolare televisivi, con telecomando
KR100742140B1 (ko) * 1999-03-30 2007-07-24 퀄컴 인코포레이티드 이동전화 스피커와 마이크로폰 이득을 자동으로 조정하는방법 및 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823931A1 (de) * 1978-05-31 1979-12-06 Siemens Ag Fernsprech-teilnehmerstation
GB2120905B (en) * 1982-01-25 1986-03-19 Viking Phone Co Inc Cordless telephone
FI86937C (fi) * 1989-11-01 1992-10-26 Salora Myynti Oy Telefonsystem
DE4005517A1 (de) * 1990-02-22 1991-09-05 Sensys Ag Vorrichtung zu wellenleiterlosen bidirektionalen licht- oder infrarotuebertragung von tondarbietungen, digitalen signalen, messwerten oder bewegten fernsehbildern

Also Published As

Publication number Publication date
BR9204996A (pt) 1993-06-15
MX9207193A (es) 1994-03-31
FI925606A0 (fi) 1992-12-10
JPH066430A (ja) 1994-01-14
AU3012792A (en) 1993-06-17
KR930015406A (ko) 1993-07-24
EP0558812A2 (de) 1993-09-08
EP0558812A3 (en) 1995-04-05
CA2085047A1 (en) 1993-06-12
FI925606A (fi) 1993-06-12

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