BR9809024A - Processos para modificar emissões de campo magnético de um radiotelefone e de um telefone celular digital e campos magnéticos emitidos a partir de um radiotelefone, e, radiotelefone - Google Patents

Processos para modificar emissões de campo magnético de um radiotelefone e de um telefone celular digital e campos magnéticos emitidos a partir de um radiotelefone, e, radiotelefone

Info

Publication number
BR9809024A
BR9809024A BR9809024-0A BR9809024A BR9809024A BR 9809024 A BR9809024 A BR 9809024A BR 9809024 A BR9809024 A BR 9809024A BR 9809024 A BR9809024 A BR 9809024A
Authority
BR
Brazil
Prior art keywords
magnetic field
radiotelephone
processes
cell phone
radio telephone
Prior art date
Application number
BR9809024-0A
Other languages
English (en)
Inventor
Howard Holshouser
Original Assignee
Ericsson 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
Application filed by Ericsson Inc filed Critical Ericsson Inc
Publication of BR9809024A publication Critical patent/BR9809024A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/55—Communication between hearing aids and external devices via a network for data exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Prostheses (AREA)
  • Catching Or Destruction (AREA)

Abstract

''PROCESSOS PARA MODIFICAR EMISSõES DE CAMPO MAGNéTICO DE UM RADIOTELEFONE E DE UM TELEFONE CELULAR DIGITAL E CAMPOS MAGNéTICOS EMITIDOS A PARTIR DE UM RADIOTELEFONE, E, RADIOTELEFONE''. Um novo processo e aparelho são descritos para a redução do efeito que as emissões de campo magnético de um radiotelefone podem ter nos dispositivos sensíveis aos campos magnéticos de variação de tempo. A variação do campo magnético é suavizada pela adição de um capacitor de nivelamento possuindo uma constante de tempo significativamente mais longa do que o quadro de tempo TDMA que é conectado em paralelo ao transmissor. Adicionalmente, um campo magnético de equilíbrio é gerado por um circuito de cancelamento de campo conectado em série com o transmissor o que faz com que a corrente flua em um caminho aproximadamente oposto do caminho na qual a corrente flui através da bateria, em um plano ligeiramente paralelo. A corrente que flui através do circuito de cancelamento de campo gera um campo magnético aproximadamente coaxial com, e oposto em polaridade com relação ao campo magnético gerado pela corrente que flui através da bateria, parcialmente negando o último. A utilização do processo e aparelho resulta em uma redução na magnitude efetiva do campo magnético de variação de tempo fora do telefone.
BR9809024-0A 1997-04-03 1998-03-24 Processos para modificar emissões de campo magnético de um radiotelefone e de um telefone celular digital e campos magnéticos emitidos a partir de um radiotelefone, e, radiotelefone BR9809024A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/832,491 US5960346A (en) 1997-04-03 1997-04-03 Apparatus and method for reducing magnetic fields in radio telephones
PCT/US1998/005843 WO1998044648A1 (en) 1997-04-03 1998-03-24 Apparatus and method for reducing magnetic fields in radio telephones

Publications (1)

Publication Number Publication Date
BR9809024A true BR9809024A (pt) 2000-08-01

Family

ID=25261808

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9809024-0A BR9809024A (pt) 1997-04-03 1998-03-24 Processos para modificar emissões de campo magnético de um radiotelefone e de um telefone celular digital e campos magnéticos emitidos a partir de um radiotelefone, e, radiotelefone

Country Status (14)

Country Link
US (1) US5960346A (pt)
EP (2) EP1349290A1 (pt)
JP (1) JP2001519100A (pt)
KR (1) KR100393236B1 (pt)
CN (2) CN1105428C (pt)
AR (1) AR013913A1 (pt)
AU (1) AU741191B2 (pt)
BR (1) BR9809024A (pt)
DE (1) DE69831061D1 (pt)
EE (1) EE9900459A (pt)
HK (1) HK1025849A1 (pt)
MY (1) MY120981A (pt)
TR (2) TR199902431T2 (pt)
WO (1) WO1998044648A1 (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7787647B2 (en) 1997-01-13 2010-08-31 Micro Ear Technology, Inc. Portable system for programming hearing aids
US6813490B1 (en) * 1999-12-17 2004-11-02 Nokia Corporation Mobile station with audio signal adaptation to hearing characteristics of the user
WO2001054458A2 (en) 2000-01-20 2001-07-26 Starkey Laboratories, Inc. Hearing aid systems
US7012810B2 (en) * 2000-09-20 2006-03-14 Ballard Power Systems Corporation Leadframe-based module DC bus design to reduce module inductance
US20030003864A1 (en) * 2001-06-28 2003-01-02 Antony Locke Cover for a mobile telephone handset
US7280808B2 (en) * 2004-04-12 2007-10-09 Sony Ericsson Mobile Communications, Ab Wireless communications devices including circuit substrates with partially overlapping conductors thereon coupling power to/from power amplifier systems
JP2006050054A (ja) * 2004-08-02 2006-02-16 Matsushita Electric Ind Co Ltd 無線電話装置およびその消費電流制御方法
CA2601662A1 (en) 2006-09-18 2008-03-18 Matthias Mullenborn Wireless interface for programming hearing assistance devices
US8541117B2 (en) * 2009-11-11 2013-09-24 Blackberry Limited Low noise battery with a magnetic compensation structure for wireless mobile communication device
GB2524720A (en) * 2014-02-21 2015-10-07 Trust Battery Ireland Ltd Recordal of potential harmful radiation
EP4210446A1 (en) * 2020-09-11 2023-07-12 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Circuit structure, battery, electronic device, and battery manufacturing method
CN213343218U (zh) * 2020-09-11 2021-06-01 Oppo广东移动通信有限公司 电路结构、电池及电子设备
CN213150851U (zh) * 2020-09-16 2021-05-07 常州微宙电子科技有限公司 降低电磁辐射的锂离子电池

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8914888D0 (en) * 1989-06-29 1989-08-23 Ferranti Creditphone Burst mode transmitter/receiver unit
US5126688A (en) * 1990-03-20 1992-06-30 Oki Electric Co., Ltd. Power amplifying apparatus for wireless transmitter
EP0561257B1 (de) * 1992-03-20 1996-10-23 Siemens Aktiengesellschaft Schaltungsanordnung zur Überbrückung von kurzzeitigen Spannungsabfällen in batteriegespeisten Funkgeräten
EP0674400B1 (de) * 1994-03-24 1999-06-23 Siemens Aktiengesellschaft Funkgerät
US5842115A (en) * 1996-01-25 1998-11-24 Ericsson Inc. Time-duplex wireless telephone with improved hearing-aid compatibility

Also Published As

Publication number Publication date
CN1105428C (zh) 2003-04-09
MY120981A (en) 2005-12-30
AU741191B2 (en) 2001-11-22
KR20010005988A (ko) 2001-01-15
JP2001519100A (ja) 2001-10-16
KR100393236B1 (ko) 2003-07-31
HK1025849A1 (en) 2000-11-24
EP0972354A1 (en) 2000-01-19
CN1251703A (zh) 2000-04-26
AU6773398A (en) 1998-10-22
EP0972354B1 (en) 2005-08-03
DE69831061D1 (de) 2005-09-08
CN1427550A (zh) 2003-07-02
WO1998044648A1 (en) 1998-10-08
US5960346A (en) 1999-09-28
EE9900459A (et) 2000-06-15
TR199902431T2 (xx) 2000-03-21
AR013913A1 (es) 2001-01-31
EP1349290A1 (en) 2003-10-01
TR200001155T2 (tr) 2000-08-21

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A E 10A ANUIDADES.

B08G Application fees: restoration [chapter 8.7 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A ANUI DADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2077 DE 26/10/2010.