DE10251186B4 - Radio receiver with diversity function - Google Patents
Radio receiver with diversity function Download PDFInfo
- Publication number
- DE10251186B4 DE10251186B4 DE2002151186 DE10251186A DE10251186B4 DE 10251186 B4 DE10251186 B4 DE 10251186B4 DE 2002151186 DE2002151186 DE 2002151186 DE 10251186 A DE10251186 A DE 10251186A DE 10251186 B4 DE10251186 B4 DE 10251186B4
- Authority
- DE
- Germany
- Prior art keywords
- signal
- signals
- mpx1
- tuner
- radio receiver
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/12—Frequency diversity
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
- H03J1/0058—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
- H03J1/0083—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means using two or more tuners
-
- 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
Abstract
Rundfunkempfänger mit
Diversity-Funktion, der mindestens aufweist:
einen Wiedergabe-Tuner
(3) zur Aufnahme eines Rundfunk-Empfangssignals
und Ausgabe eines NF-Signals (MPX1) bei einer Wiedergabe-Empfangsfrequenz,
und
eine Steuereinheit (5) zur Aufnahme des NF-Signals des Wiedergabe-Tuners
(3) und Ausgabe eines Einstellsignals (S3) zur Einstellung der Wiedergabe-Empfangsfrequenz des
Wiedergabe-Tuners
(3) und/oder einer von mehreren Antennen,
wobei die Steuereinrichtung
Korrekturfaktoren (ak) für die NF-Signale (MPX1, MPX2)
mehrerer Einstellungen ermittelt, das NF-Signal (MPX1) der gewählten Einstellung
oder hieraus gebildete Signale ((L+R)1 (L-R)1) mit dem entsprechenden
Korrekturfaktor multipliziert und ein korrigiertes NF-Signal (S4)
ausgibt,
dadurch gekennzeichnet, dass die Steuereinrichtung
(5) aus den NF-Signalen (MPX1, MPX2) oder durch Demodulation gebildeten
Signalen ((L+R)1,2) fortlaufend jeweils Leistungswerte (pk) ermittelt
und aus den Leistungswerten (pk), die Korrekturfaktoren (ak) ermittelt.Radio receiver with diversity function, which has at least:
a reproduction tuner (3) for receiving a broadcast reception signal and outputting a LF signal (MPX1) at a reproduction reception frequency, and
a control unit (5) for receiving the LF signal of the reproduction tuner (3) and outputting a setting signal (S3) for setting the reproduction reception frequency of the reproduction tuner (3) and / or one of a plurality of antennas,
wherein the control means determines correction factors (a k ) for the LF signals (MPX1, MPX2) of several settings, the LF signal (MPX1) of the selected setting or signals (L + R) 1 (LR) 1) formed therefrom multiplied corresponding correction factor and outputs a corrected LF signal (S4),
characterized in that the control device (5) from the LF signals (MPX1, MPX2) or signals formed by demodulation ((L + R) 1,2) continuously each performance (pk) and determined from the power values (pk), the Correction factors (ak) determined.
Description
Rundfunkempfänger mit Frequenzdiversity-Funktion vergleichen die Empfangsqualität eines Radioprogramms bei mehreren Empfangsfrequenzen nach vorgegebenen Qualitätskriterien und wählen eine als optimal bewertete Empfangsfrequenz zur Wiedergabe aus. Hierzu weisen sie im allgemeinen mindestens einen Such-Tuner zum Vergleichen der Qualität des Empfangssignals bei den mehreren Empfangsfrequenzen und einen auf die jeweils ausgewählte Empfangsfrequenz eingestellten Wiedergabe-Tuner auf, dessen Ausgangssignal weiterverarbeitet wird. Weiterhin sind Rundfunkempfänger mit Antennendiversity-Funktion bekannt, die entsprechend die Empfangsqualität eines Radioprogramms über mehrere Antennen empfangen und eine Antenne als optimal bewerten und auswählen.Radio receiver with Frequency diversity function compares the reception quality of a radio program at several reception frequencies according to given quality criteria and choose a reception frequency rated as optimal for reproduction. For this they generally have at least one search tuner Compare the quality the received signal at the plurality of receiving frequencies and a on the respectively selected Reception frequency tuned playback tuner, whose output signal is further processed. Furthermore, there are radio receivers with antenna diversity function known, the corresponding quality of reception of a radio program over several Receive antennas and rate and select an antenna as optimal.
Die
Aufgrund von unterschiedlichen Modulationsgraden und der Antennensignalabhängigkeit des NF-Pegels am Ausgang des Rundfunkempfängers treten beim Wechsel zwischen unterschiedlichen Empfangsfrequenzen bzw. Antennen Pegelsprünge auf, die die Audiowiedergabe stören können.by virtue of of different degrees of modulation and antenna signal dependence of the LF level at the output of the radio receiver occur when switching between different reception frequencies or antenna level jumps, which disturb the audio playback can.
Der Erfindung liegt die Aufgabe zugrunde, einen Rundfunkempfänger mit Diversity-Funktion zu schaffen, der eine gleichmäßige Wiedergabe eines Rundfunkprogramms bei unterschiedlichen Einstellungen ermöglicht. Dies soll vorteilhafterweise mit relativ geringem zusätzlichen Aufwand möglich sein.Of the Invention is based on the object with a radio receiver Diversity function to create a uniform reproduction of a broadcast program possible with different settings. This should be advantageous with relatively little extra Effort possible be.
Diese Aufgabe wird gelöst durch einen Rundfunkempfänger nach Anspruch 1. Die Unteransprüche beschreiben bevorzugte Weiter bildungen.These Task is solved through a radio receiver according to claim 1. The dependent claims describe preferred further developments.
Erfindungsgemäß werden somit die Radioprogrammsignale verschiedener Einstellungen – d.h. Empfangsfrequenzen (bzw. Rundfunkstationen) bei Frequenzdiversity und/oder Antennen bei Antennendiversity – in geeigneter Weise korrigiert, um Pegelsprünge beim Wechsel zu vermeiden.According to the invention thus the radio program signals of various settings - i. receiving frequencies (or radio stations) in frequency diversity and / or antennas Antenna diversity - in Correctly corrected to avoid level jumps when changing.
Die Korrekturfaktoren können insbesondere aus durch zeitliche Mittelung gebildeten Leistungswerten der jeweiligen Einstellungen gebildet werden. Hierzu kann vorteilhafterweise bei Empfang eines UKW-Stereosignals lediglich das Summensignal ausgewertet werden, wodurch der Berechnungsaufwand gering gehalten wird. Die Korrektur erfolgt anschließend aus dem ermittelten Korrekturfaktor auch für die Hilfssignale. Zur besseren Datenverarbeitung vorteilhafterweise eine Analog-Digital-Wandlung des analogen NF-Signals bzw. Summensignals vorgenommen werden.The Correction factors can in particular from performance values formed by temporal averaging the respective settings are formed. This can advantageously when receiving an FM stereo signal, only the sum signal is evaluated which reduces the amount of computation required. The Correction then takes place from the determined correction factor also for the auxiliary signals. For better Data processing advantageously an analog-to-digital conversion of the analogue low-frequency signal or sum signal.
Die Erfindung wird im folgenden anhand der beiliegenden Zeichnung an einigen Ausführungsformen näher erläutert. Es zeigen:The Invention will be described below with reference to the accompanying drawings some embodiments explained in more detail. It demonstrate:
Aus
einem von einer Antenne
Erfindungsgemäß ermittelt
die Steuereinrichtung
Gemäß der Ausführungsform
von
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002151186 DE10251186B4 (en) | 2002-11-04 | 2002-11-04 | Radio receiver with diversity function |
PCT/EP2003/011860 WO2004042957A1 (en) | 2002-11-04 | 2003-10-24 | Radio broadcast receiver with diversity function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002151186 DE10251186B4 (en) | 2002-11-04 | 2002-11-04 | Radio receiver with diversity function |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10251186A1 DE10251186A1 (en) | 2004-05-19 |
DE10251186B4 true DE10251186B4 (en) | 2006-11-23 |
Family
ID=32115163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002151186 Expired - Fee Related DE10251186B4 (en) | 2002-11-04 | 2002-11-04 | Radio receiver with diversity function |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10251186B4 (en) |
WO (1) | WO2004042957A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905157A1 (en) * | 1999-02-08 | 2000-08-31 | Becker Gmbh | Radio receivers with several antennas to which antenna amplifiers has control unit for controlling radio receiver connected with antenna amplifiers via control lines |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2701177B1 (en) * | 1993-02-01 | 1995-06-02 | Leprince Guillaume | Device for tracking radio stations. |
US5530925A (en) * | 1993-08-02 | 1996-06-25 | Harris Corporation | Intermediate frequency combiner for a radio communication system |
DE19830608B4 (en) * | 1998-07-09 | 2007-09-06 | Harman Becker Automotive Systems Gmbh | Radio receiver |
-
2002
- 2002-11-04 DE DE2002151186 patent/DE10251186B4/en not_active Expired - Fee Related
-
2003
- 2003-10-24 WO PCT/EP2003/011860 patent/WO2004042957A1/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905157A1 (en) * | 1999-02-08 | 2000-08-31 | Becker Gmbh | Radio receivers with several antennas to which antenna amplifiers has control unit for controlling radio receiver connected with antenna amplifiers via control lines |
Also Published As
Publication number | Publication date |
---|---|
DE10251186A1 (en) | 2004-05-19 |
WO2004042957A1 (en) | 2004-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH, 76307 KARLS |
|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |