FI99068C - Procedure for improving speaker function in mobile phone and mobile phone - Google Patents

Procedure for improving speaker function in mobile phone and mobile phone

Info

Publication number
FI99068C
FI99068C FI950380A FI950380A FI99068C FI 99068 C FI99068 C FI 99068C FI 950380 A FI950380 A FI 950380A FI 950380 A FI950380 A FI 950380A FI 99068 C FI99068 C FI 99068C
Authority
FI
Finland
Prior art keywords
mobile phone
procedure
speaker function
improving speaker
improving
Prior art date
Application number
FI950380A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI950380A (en
FI99068B (en
FI950380A0 (en
Inventor
Pertti Vaekiparta
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Priority to FI950380A priority Critical patent/FI99068C/en
Publication of FI950380A0 publication Critical patent/FI950380A0/en
Priority to GB9602258A priority patent/GB2297463A/en
Publication of FI950380A publication Critical patent/FI950380A/en
Application granted granted Critical
Publication of FI99068B publication Critical patent/FI99068B/en
Publication of FI99068C publication Critical patent/FI99068C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers
    • 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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • 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
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
FI950380A 1995-01-27 1995-01-27 Procedure for improving speaker function in mobile phone and mobile phone FI99068C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI950380A FI99068C (en) 1995-01-27 1995-01-27 Procedure for improving speaker function in mobile phone and mobile phone
GB9602258A GB2297463A (en) 1995-01-27 1996-01-24 Improving reception in a mobile phone by controlling the bandwidth of a filter in the signal path in dependence on some signal parameter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI950380A FI99068C (en) 1995-01-27 1995-01-27 Procedure for improving speaker function in mobile phone and mobile phone

Publications (4)

Publication Number Publication Date
FI950380A0 FI950380A0 (en) 1995-01-27
FI950380A FI950380A (en) 1996-07-28
FI99068B FI99068B (en) 1997-06-13
FI99068C true FI99068C (en) 1997-09-25

Family

ID=8542592

Family Applications (1)

Application Number Title Priority Date Filing Date
FI950380A FI99068C (en) 1995-01-27 1995-01-27 Procedure for improving speaker function in mobile phone and mobile phone

Country Status (2)

Country Link
FI (1) FI99068C (en)
GB (1) GB2297463A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2880955B2 (en) * 1996-07-11 1999-04-12 埼玉日本電気株式会社 Mobile phone equipment
GB2356305B (en) * 1996-07-11 2001-07-25 Nec Corp Portable telephone capable of decreasing noise

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856892A (en) * 1957-11-14 1960-12-21 Collins Radio Co Means for reducing the threshold of angular-modulation receivers
CA1190289A (en) * 1981-04-28 1985-07-09 Nippon Hoso Kyokai Fm signal demodulation system
DE3175644D1 (en) * 1981-08-31 1987-01-08 Oki Electric Ind Co Ltd High-sensitivity fm signal demodulation system
IT1212744B (en) * 1983-05-19 1989-11-30 Sogs Ates Componenti Elettroni CIRCUIT FOR THE ATTENUATION OF INTERFERENCE IN A RADIO RECEIVER BY USING AN ADJUSTABLE BANDWIDTH LOW-PASS FILTER.
US5287556A (en) * 1990-09-28 1994-02-15 Motorola, Inc. Interference reduction using an adaptive receiver filter, signal strength, and BER sensing

Also Published As

Publication number Publication date
GB9602258D0 (en) 1996-04-03
FI950380A (en) 1996-07-28
FI99068B (en) 1997-06-13
FI950380A0 (en) 1995-01-27
GB2297463A (en) 1996-07-31

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: NOKIA MOBILE PHONES LTD

BB Publication of examined application