AT455431T - Hörbarkeitsverbesserung - Google Patents

Hörbarkeitsverbesserung

Info

Publication number
AT455431T
AT455431T AT04714539T AT04714539T AT455431T AT 455431 T AT455431 T AT 455431T AT 04714539 T AT04714539 T AT 04714539T AT 04714539 T AT04714539 T AT 04714539T AT 455431 T AT455431 T AT 455431T
Authority
AT
Austria
Prior art keywords
hörbarkeitsverbesserung
Prior art date
Application number
AT04714539T
Other languages
German (de)
Inventor
Toenu Trump
Anders Eriksson
Original Assignee
Ericsson Telefon Ab L M
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 to US44987903P priority Critical
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to PCT/SE2004/000261 priority patent/WO2004077806A1/en
Publication of AT455431T publication Critical patent/AT455431T/en

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/32Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/60Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges including speech amplifiers
    • H04M1/6016Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges including speech amplifiers in the receiver circuit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Interconnection arrangements not involving centralised switching
    • H04M9/08Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/72Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
    • H04M1/725Cordless telephones
    • H04M1/72519Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status
AT04714539T 2003-02-27 2004-02-25 Hörbarkeitsverbesserung AT455431T (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US44987903P true 2003-02-27 2003-02-27
PCT/SE2004/000261 WO2004077806A1 (en) 2003-02-27 2004-02-25 Audibility enhancement

Publications (1)

Publication Number Publication Date
AT455431T true AT455431T (en) 2010-01-15

Family

ID=32927588

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04714539T AT455431T (en) 2003-02-27 2004-02-25 Hörbarkeitsverbesserung

Country Status (7)

Country Link
US (1) US7092514B2 (en)
EP (1) EP1599992B1 (en)
JP (1) JP4699988B2 (en)
AT (1) AT455431T (en)
DE (1) DE602004025089D1 (en)
HK (1) HK1086412A1 (en)
WO (1) WO2004077806A1 (en)

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Also Published As

Publication number Publication date
JP2006519554A (en) 2006-08-24
WO2004077806A1 (en) 2004-09-10
JP4699988B2 (en) 2011-06-15
DE602004025089D1 (en) 2010-03-04
EP1599992A1 (en) 2005-11-30
US7092514B2 (en) 2006-08-15
EP1599992B1 (en) 2010-01-13
HK1086412A1 (en) 2010-05-20
US20050004796A1 (en) 2005-01-06

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Legal Events

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