EP2302823A1 - Digital AM/FM radio, especially for a car - Google Patents

Digital AM/FM radio, especially for a car Download PDF

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Publication number
EP2302823A1
EP2302823A1 EP10175707A EP10175707A EP2302823A1 EP 2302823 A1 EP2302823 A1 EP 2302823A1 EP 10175707 A EP10175707 A EP 10175707A EP 10175707 A EP10175707 A EP 10175707A EP 2302823 A1 EP2302823 A1 EP 2302823A1
Authority
EP
European Patent Office
Prior art keywords
radio
digital
antenna
signals
tuners
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.)
Withdrawn
Application number
EP10175707A
Other languages
German (de)
French (fr)
Inventor
Jérôme Blandeau
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2302823A1 publication Critical patent/EP2302823A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/60—Aspects of broadcast communication characterised in that the receiver comprises more than one tuner

Definitions

  • the present invention relates to a digital radio and AM / FM, especially for a motor vehicle comprising two analog tuners and two digital tuners.
  • a radio of a vehicle thus comprises at least two tuners, one for receiving the analog signals, and one for digital signals.
  • High-end radios even include several analog and digital tuners to perform, for example, reception of phase diversity signals.
  • these additional tuners are responsible for updating lists and searching stations.
  • each tuner is connected to a pre-amplifier and its own antenna. So there are currently in high-end radios four tuners, two analog and two digital, and four antennas.
  • Fig. 1 shows a diagram of the current solution according to which four antennas L1 to L4 are provided for four tuners, equipping a car radio.
  • An antenna (L2) is used for phase diversity, list updating and station search.
  • the antenna (L4) is used to receive digital signals for phase diversity, list updating and station search.
  • the present invention aims to reduce the manufacturing costs and congestion of a car system comprising four tuners and corresponding antennas.
  • this object is achieved by a digital radio and AM / FM, in particular for a motor vehicle comprising two analog tuners and two digital tuners and corresponding pre-amplifiers and antennas, in which for the four tuners only three antennas are a first for AM / FM signals, a second for FM and digital radio signals and a third for digital radio signals.
  • a common pre-amplifier is provided for the second antenna for the FM and digital radio signals with a single output to arrive at the car radio.
  • the second antenna is used for receiving phase diversity, updating the lists and searching stations for analogue radio and digital radio.
  • Fig. 2 annexed shows a diagram of the proposed solution with only three antennas for four tuners.
  • the first antenna L1 receives AM / FM signals
  • the second antenna L1 is used for phase diversity, the updating of the lists and search of stations in analog radio and digital radio.
  • the third antenna L3 is used for reception of digital radio signals.
  • the second antenna L2 is connected to a common pre-amplifier grouping the amplification function at the antenna foot for the FM and digital radio signals with a single output to arrive at the car radio.
  • the advantage of this solution is therefore to save an antenna, an antenna adapter (pre-amplifier) in the case of an antenna on glass and an antenna cable for switching to radio in digital mode.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)

Abstract

The radio has a first antenna (L1) for receiving amplitude modulation (AM)/frequency modulation (FM) signals, and a second antenna (L2) for receiving the FM and digital radio signals. A third antenna (L3) receives the digital radio signals. The three antennas are provided for two digital tuners and two analog tuners. A common preamplifier is provided for the second antenna for amplifying the FM and digital radio signals. The second antenna updates lists, and searches analog radio and digital radio stations.

Description

La présente invention concerne une radio numérique et AM/FM, notamment pour un véhicule automobile comportant deux tuners analogiques et deux tuners numériques.The present invention relates to a digital radio and AM / FM, especially for a motor vehicle comprising two analog tuners and two digital tuners.

Actuellement le passage à la radio numérique sur les véhicules est en cours d'implantation et la mise en place des équipements en série doit être effective rapidement. De même les stations émettant des signaux analogiques, particulièrement en modulation d'amplitude et modulation de fréquence (AM/FM), coexistent avec des stations émettant des signaux numériques. Une radio d'un véhicule comprend ainsi au moins deux tuners, un pour recevoir les signaux analogiques, et un pour des signaux numériques.Currently the transition to digital radio on vehicles is being implemented and the implementation of serial equipment must be effective quickly. Similarly, the stations transmitting analog signals, particularly in amplitude modulation and frequency modulation (AM / FM) coexist with stations transmitting digital signals. A radio of a vehicle thus comprises at least two tuners, one for receiving the analog signals, and one for digital signals.

Des radios de haut de gamme comprennent même plusieurs tuners analogiques et numériques pour effectuer par exemple une réception des signaux en diversité de phase. De plus, ces tuners supplémentaires sont chargés de la mise à jour des listes et de la recherche des stations.High-end radios even include several analog and digital tuners to perform, for example, reception of phase diversity signals. In addition, these additional tuners are responsible for updating lists and searching stations.

On connaît des réalisations comportant quatre tuners dans lesquelles chaque tuner est relié à un pré-amplificateur et à sa propre antenne. Il y a donc actuellement dans les radios de haut de gamme quatre tuners, deux analogiques et deux numériques, et quatre antennes.There are known embodiments comprising four tuners in which each tuner is connected to a pre-amplifier and its own antenna. So there are currently in high-end radios four tuners, two analog and two digital, and four antennas.

Fig. 1 montre un schéma de la solution actuelle selon laquelle quatre antennes L1 à L4 sont prévues pour quatre tuners, équipant un autoradio. Une antenne (L2) est utilisée pour la diversité de phase, la mise à jour des listes et la recherche de stations. De même, l'antenne (L4) est utilisée pour recevoir des signaux numériques pour la diversité de phase, la mise à jour des listes et la recherche de stations. Fig. 1 shows a diagram of the current solution according to which four antennas L1 to L4 are provided for four tuners, equipping a car radio. An antenna (L2) is used for phase diversity, list updating and station search. Similarly, the antenna (L4) is used to receive digital signals for phase diversity, list updating and station search.

Cette solution est encombrante car elle nécessite quatre antennes sérigraphies ou antennes sur le toit du véhicule et exige de prévoir quatre pré-amplificateurs ce qui augmente les frais de fabrication.This solution is cumbersome because it requires four screen-printing antennas or antennas on the roof of the vehicle and requires the provision of four pre-amplifiers which increases the manufacturing costs.

La présente invention a pour objet de réduire les frais de fabrication et l'encombrement d'un système autoradio comprenant quatre tuners et des antennes correspondantes.The present invention aims to reduce the manufacturing costs and congestion of a car system comprising four tuners and corresponding antennas.

Selon l'invention, ce but est atteint par une radio numérique et AM/FM, notamment pour un véhicule automobile comportant deux tuners analogiques et deux tuners numériques et des pré-amplificateurs et antennes correspondantes, dans laquelle pour les quatre tuners seules trois antennes sont prévues, une première pour les signaux AM/FM, une deuxième pour les signaux FM et radio numérique et une troisième pour les signaux radio numérique.According to the invention, this object is achieved by a digital radio and AM / FM, in particular for a motor vehicle comprising two analog tuners and two digital tuners and corresponding pre-amplifiers and antennas, in which for the four tuners only three antennas are a first for AM / FM signals, a second for FM and digital radio signals and a third for digital radio signals.

Selon un mode de réalisation préféré, un pré-amplificateur commun est prévu pour la deuxième antenne pour les signaux FM et radio numérique avec une seule sortie pour arriver à l'autoradio.According to a preferred embodiment, a common pre-amplifier is provided for the second antenna for the FM and digital radio signals with a single output to arrive at the car radio.

Selon une autre caractéristique préférée, la deuxième antenne est utilisée pour la réception de la diversité de phase, la mise à jour des listes et la recherche de stations en radio analogique et en radio numérique.According to another preferred characteristic, the second antenna is used for receiving phase diversity, updating the lists and searching stations for analogue radio and digital radio.

Fig. 2 annexée montre un schéma de la solution proposée avec seulement trois antennes pour quatre tuners. Fig. 2 annexed shows a diagram of the proposed solution with only three antennas for four tuners.

La première antenne L1 reçoit des signaux AM/FM, la deuxième antenne L1 est utilisée pour la diversité de phase, la mise à jour des listes et recherche de stations en radio analogique et en radio numérique. La troisième antenne L3 est utilisée pour la réception des signaux en radio numérique.The first antenna L1 receives AM / FM signals, the second antenna L1 is used for phase diversity, the updating of the lists and search of stations in analog radio and digital radio. The third antenna L3 is used for reception of digital radio signals.

La deuxième antenne L2 est reliée à un pré-amplificateur commun regroupant la fonction d'amplification en pied d'antenne pour les signaux FM et radio numérique avec une seule sortie pour arriver à l'autoradio.The second antenna L2 is connected to a common pre-amplifier grouping the amplification function at the antenna foot for the FM and digital radio signals with a single output to arrive at the car radio.

L'avantage de cette solution est donc d'économiser une antenne, un adaptateur d'antenne (pré-amplificateur) dans le cas d'une antenne sur verre et un câble d'antenne pour le passage à la radio en mode numérique.The advantage of this solution is therefore to save an antenna, an antenna adapter (pre-amplifier) in the case of an antenna on glass and an antenna cable for switching to radio in digital mode.

Claims (3)

Radio numérique et AM/FM notamment pour un véhicule automobile comportant deux tuners analogiques, deux tuners numériques et des pré-amplificateurs et antennes correspondantes, caractérisée en ce que pour les quatre tuners seules trois antennes sont prévues, une première (L1) pour les signaux AM/FM, une deuxième (L2) pour les signaux FM et radio numérique et une troisième (L3) pour les signaux radio numérique.Digital radio and AM / FM in particular for a motor vehicle comprising two analogue tuners, two digital tuners and corresponding pre-amplifiers and antennas, characterized in that for the four tuners only three antennas are provided, a first (L1) for the signals AM / FM, a second (L2) for FM and digital radio signals and a third (L3) for digital radio signals. Radio selon la revendication 1, caractérisée en ce que un pré-amplificateur commun est prévu pour la deuxième antenne pour les signaux FM et radio numérique avec une seule sortie pour arriver à l'autoradio.Radio according to claim 1, characterized in that a common pre-amplifier is provided for the second antenna for FM and digital radio signals with a single output to reach the car radio. Radio selon la revendication 1 ou 2, caractérisée en ce que la deuxième antenne est utilisée pour la réception de la diversité de phase, la mise à jour des listes et de la recherche de stations en radio analogique et en radio numérique.Radio according to claim 1 or 2, characterized in that the second antenna is used for reception of phase diversity, update of the lists and search of stations in analog radio and digital radio.
EP10175707A 2009-09-25 2010-09-08 Digital AM/FM radio, especially for a car Withdrawn EP2302823A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0956667A FR2950764B1 (en) 2009-09-25 2009-09-25 DIGITAL AND AM / FM RADIO, IN PARTICULAR FOR A MOTOR VEHICLE

Publications (1)

Publication Number Publication Date
EP2302823A1 true EP2302823A1 (en) 2011-03-30

Family

ID=42115932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10175707A Withdrawn EP2302823A1 (en) 2009-09-25 2010-09-08 Digital AM/FM radio, especially for a car

Country Status (2)

Country Link
EP (1) EP2302823A1 (en)
FR (1) FR2950764B1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584051A (en) * 1991-11-01 1996-12-10 Thomson Consumer Electronics Sales Gmbh Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor
EP1471649A1 (en) * 2003-04-25 2004-10-27 Fujitsu Ten Limited Antenna amplifier and shared antenna amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5584051A (en) * 1991-11-01 1996-12-10 Thomson Consumer Electronics Sales Gmbh Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor
EP1471649A1 (en) * 2003-04-25 2004-10-27 Fujitsu Ten Limited Antenna amplifier and shared antenna amplifier

Also Published As

Publication number Publication date
FR2950764A1 (en) 2011-04-01
FR2950764B1 (en) 2011-10-28

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