AU2002216091A1 - Audio output stage for a mobile telephone - Google Patents

Audio output stage for a mobile telephone

Info

Publication number
AU2002216091A1
AU2002216091A1 AU2002216091A AU1609102A AU2002216091A1 AU 2002216091 A1 AU2002216091 A1 AU 2002216091A1 AU 2002216091 A AU2002216091 A AU 2002216091A AU 1609102 A AU1609102 A AU 1609102A AU 2002216091 A1 AU2002216091 A1 AU 2002216091A1
Authority
AU
Australia
Prior art keywords
audio output
mobile telephone
output stage
stage
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.)
Abandoned
Application number
AU2002216091A
Inventor
Gunnar Klinghult
Peter Rojsel
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 GB0030279A external-priority patent/GB2370177B/en
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU2002216091A1 publication Critical patent/AU2002216091A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/005—Reducing noise, e.g. humm, from the supply
    • 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • 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
AU2002216091A 2000-12-12 2001-12-10 Audio output stage for a mobile telephone Abandoned AU2002216091A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0030279.4 2000-12-12
GB0030279A GB2370177B (en) 2000-12-12 2000-12-12 Communication systems
US25540600P 2000-12-15 2000-12-15
US60/255,406 2000-12-15
PCT/EP2001/014500 WO2002049205A2 (en) 2000-12-12 2001-12-10 Audio output stage for a mobile telephone

Publications (1)

Publication Number Publication Date
AU2002216091A1 true AU2002216091A1 (en) 2002-06-24

Family

ID=26245421

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002216091A Abandoned AU2002216091A1 (en) 2000-12-12 2001-12-10 Audio output stage for a mobile telephone

Country Status (3)

Country Link
US (1) US20020114443A1 (en)
AU (1) AU2002216091A1 (en)
WO (1) WO2002049205A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135463A1 (en) * 2001-07-20 2003-03-13 Klotz Digital Ag Device for the transmission, reception and processing of audio signals and control signals in loudspeaker systems

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903825A (en) * 1996-06-27 1999-05-11 Motorola, Inc. Digital FM receiver back end
US5898340A (en) * 1996-11-20 1999-04-27 Chatterjee; Manjirnath A. High power efficiency audio amplifier with digital audio and volume inputs
JPH10303657A (en) * 1997-04-28 1998-11-13 Nec Corp Pwm driving device
US6269093B1 (en) * 1997-12-16 2001-07-31 Nokia Mobile Phones Limited Adaptive removal of disturbance in TDMA acoustic peripheral devices
JP2000151317A (en) * 1998-11-10 2000-05-30 Hitachi Ltd Transmitter and power amplifier
US6745055B1 (en) * 2000-02-23 2004-06-01 Agere Systems Inc. Digital cordless telephone with speakerphone in a remote handset

Also Published As

Publication number Publication date
WO2002049205A3 (en) 2002-12-05
US20020114443A1 (en) 2002-08-22
WO2002049205A2 (en) 2002-06-20

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