FI99068C - Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelin - Google Patents
Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelinInfo
- 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
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)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI950380A FI99068C (fi) | 1995-01-27 | 1995-01-27 | Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelin |
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 (fi) | 1995-01-27 | 1995-01-27 | Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelin |
Publications (4)
Publication Number | Publication Date |
---|---|
FI950380A0 FI950380A0 (fi) | 1995-01-27 |
FI950380A FI950380A (fi) | 1996-07-28 |
FI99068B FI99068B (fi) | 1997-06-13 |
FI99068C true FI99068C (fi) | 1997-09-25 |
Family
ID=8542592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI950380A FI99068C (fi) | 1995-01-27 | 1995-01-27 | Menetelmä kaiutintoiminnan parantamiseksi matkapuhelimessa sekä matkapuhelin |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI99068C (fi) |
GB (1) | GB2297463A (fi) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2880955B2 (ja) * | 1996-07-11 | 1999-04-12 | 埼玉日本電気株式会社 | 携帯電話装置 |
GB2356305B (en) * | 1996-07-11 | 2001-07-25 | Nec Corp | Portable telephone capable of decreasing noise |
Family Cites Families (5)
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 |
MX151558A (es) * | 1981-08-31 | 1984-12-13 | Oki Electric Ind Co Ltd | Mejoras a sistema de demodulacion de alta sensibilidad de senales de f.m. de television |
IT1212744B (it) * | 1983-05-19 | 1989-11-30 | Sogs Ates Componenti Elettroni | Circuito per l'attenuazione dei disturbi in un radioricevitore mediante l'impiego di un filtro passa-basso a banda passante regolabile. |
US5287556A (en) * | 1990-09-28 | 1994-02-15 | Motorola, Inc. | Interference reduction using an adaptive receiver filter, signal strength, and BER sensing |
-
1995
- 1995-01-27 FI FI950380A patent/FI99068C/fi active IP Right Grant
-
1996
- 1996-01-24 GB GB9602258A patent/GB2297463A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FI950380A0 (fi) | 1995-01-27 |
GB9602258D0 (en) | 1996-04-03 |
GB2297463A (en) | 1996-07-31 |
FI950380A (fi) | 1996-07-28 |
FI99068B (fi) | 1997-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Patent granted |
Owner name: NOKIA MOBILE PHONES LTD |
|
BB | Publication of examined application |