ES2082797T3 - Radiotelefono adecuado para uso portatil y montado en un vehiculo. - Google Patents

Radiotelefono adecuado para uso portatil y montado en un vehiculo.

Info

Publication number
ES2082797T3
ES2082797T3 ES90107409T ES90107409T ES2082797T3 ES 2082797 T3 ES2082797 T3 ES 2082797T3 ES 90107409 T ES90107409 T ES 90107409T ES 90107409 T ES90107409 T ES 90107409T ES 2082797 T3 ES2082797 T3 ES 2082797T3
Authority
ES
Spain
Prior art keywords
vehicle
voltage
phone
portable use
radio telephone
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 - Lifetime
Application number
ES90107409T
Other languages
English (en)
Inventor
Hideki Ueda
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of ES2082797T3 publication Critical patent/ES2082797T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

UN RADIOTELEFONO PORTATIL COMPRENDE UNA SECCION DE RECEPTOR (20) INCLUYENDO AL MENOS UN AMPLIFICADOR RF (22) Y UN MEZCLADOR DE PRIMERA FRECUENCIA 823). EL TELEFONO COMPRENDE IGUALMENTE UNA BATERIA (15) QUE SUMINISTRA UN PRIMER VOLTAJE A LA SECCION DEL RECEPTOR (20) CUANDO EL TELEFONO ESTA EN USO PORTATIL. CUANDO EL TELEFONO ESTA MONTADO SOBRE UN VEHICULO, UNA BATERIA DEL VEHICULO (34) APLICA UN SEGUNDO VOLTAJE QUE ES MAS ALTO QUE EL PRIMER VOLTAJE, AL AMPLIFICADOR RF (22) Y AL MEZCLADOR DE FRECUENCIA (23). MEDIANTE ESTE SUMINISTRO DE VOLTAJE SUPERIOR, LA CARACTERISTICA DE INTERMODULACION Y LA SENSIBILIDAD DE RECEPCION DE LA SECCION DEL RECEPTOR SE PUEDEN MEJORAR EN EL USO MONTADO SOBRE VEHICULO. POR OTRA PARTE, SE PUEDE CONSEGUIR AHORRO DE BATERIA MEDIANTE EL SUMINISTRO DE VOLTAJE INFERIOR EN EL USO PORTATIL.
ES90107409T 1989-04-20 1990-04-19 Radiotelefono adecuado para uso portatil y montado en un vehiculo. Expired - Lifetime ES2082797T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1100613A JP2773228B2 (ja) 1989-04-20 1989-04-20 携帯電話機

Publications (1)

Publication Number Publication Date
ES2082797T3 true ES2082797T3 (es) 1996-04-01

Family

ID=14278695

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90107409T Expired - Lifetime ES2082797T3 (es) 1989-04-20 1990-04-19 Radiotelefono adecuado para uso portatil y montado en un vehiculo.

Country Status (7)

Country Link
US (1) US5423077A (es)
EP (1) EP0393653B1 (es)
JP (1) JP2773228B2 (es)
AU (1) AU638007B2 (es)
CA (1) CA2014869C (es)
DE (1) DE69025226T2 (es)
ES (1) ES2082797T3 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2968592B2 (ja) * 1990-12-26 1999-10-25 日本電気株式会社 携帯電話機
GB9326228D0 (en) * 1993-12-22 1994-02-23 Nokia Mobile Phones Ltd A radio telephone battery charger
JP3158833B2 (ja) * 1994-01-27 2001-04-23 三菱電機株式会社 移動無線装置
EP0779693A1 (en) * 1995-12-11 1997-06-18 Yen-Ping Teng A charging battery structure for hand phone
JP3793298B2 (ja) * 1996-11-29 2006-07-05 ユニデン株式会社 電話装置
JP3230478B2 (ja) 1998-01-08 2001-11-19 日本電気株式会社 パケット通信カード
US6480727B1 (en) 1999-01-12 2002-11-12 Tellabs Operations, Inc. Using inactivity levels to extend subscriber equipment battery life

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU553043B2 (en) * 1978-10-30 1986-07-03 International Mobile Machines Corporation Power supply with two sources
JPS55112048A (en) * 1979-02-20 1980-08-29 Nec Corp Low power consumption type receiver
JPH0215418Y2 (es) * 1981-01-20 1990-04-25
JPS58103239A (ja) * 1981-12-15 1983-06-20 Fujitsu Ltd 局部発振器増巾部の電源電圧制御方式
US4709201A (en) * 1985-10-24 1987-11-24 General Electric Company Portable radio battery pack with on-off switch
US4636741A (en) * 1985-11-01 1987-01-13 Motorola, Inc. Multi-level power amplifying circuitry for portable radio transceivers
DE3722799C2 (de) * 1987-07-10 1998-02-19 Koninkl Philips Electronics Nv Mobilstation mit einem Empfangsteil
CA1292336C (en) * 1987-07-16 1991-11-19 Masayuki Makino Cordless telephone with battery saving function
US4858006A (en) * 1987-07-28 1989-08-15 Sony Corp. Method and apparatus for establishing a servicing mode of an electronic apparatus
JPH0650825B2 (ja) * 1988-01-29 1994-06-29 日本電気株式会社 無線電話装置
JPH0616601B2 (ja) * 1988-09-07 1994-03-02 三洋電機株式会社 受信電波処理回路のパワーセイブ回路及びそのパワーセイブ方法
JPH0728265B2 (ja) * 1989-06-23 1995-03-29 日本電気株式会社 携帯電話の電源供給方式

Also Published As

Publication number Publication date
EP0393653B1 (en) 1996-02-07
JPH02279032A (ja) 1990-11-15
DE69025226T2 (de) 1996-06-20
CA2014869C (en) 1995-05-30
EP0393653A2 (en) 1990-10-24
DE69025226D1 (de) 1996-03-21
EP0393653A3 (en) 1992-06-03
JP2773228B2 (ja) 1998-07-09
CA2014869A1 (en) 1990-10-20
US5423077A (en) 1995-06-06
AU5367890A (en) 1990-10-25
AU638007B2 (en) 1993-06-17

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