EP3044890A1 - Dispositif et procédé de reproduction de signaux de réception numériques - Google Patents

Dispositif et procédé de reproduction de signaux de réception numériques

Info

Publication number
EP3044890A1
EP3044890A1 EP14772283.9A EP14772283A EP3044890A1 EP 3044890 A1 EP3044890 A1 EP 3044890A1 EP 14772283 A EP14772283 A EP 14772283A EP 3044890 A1 EP3044890 A1 EP 3044890A1
Authority
EP
European Patent Office
Prior art keywords
receiving
receiving device
received signals
digital
channels
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Withdrawn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
EP14772283.9A
Other languages
German (de)
English (en)
Inventor
Stefan GÖTZ
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.)
Schaidt Innovations GmbH and Co KG
Original Assignee
Schaidt Innovations GmbH and Co KG
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 Schaidt Innovations GmbH and Co KG filed Critical Schaidt Innovations GmbH and Co KG
Publication of EP3044890A1 publication Critical patent/EP3044890A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/62—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]

Definitions

  • the present invention relates to an apparatus and a method for displaying digital received signals.
  • the present invention provides the operator of a conventional radio receiver with a universal and comfortable operating concept for displaying digital received signals.
  • IRB architecture the concept underlying the present invention of the "interactive RDS broadcast" architecture, also referred to below as the IRB architecture, is based on the problem according to which interactive communication and menu guidance are implemented when playing and displaying audio sources via an FM RDS receiver should.
  • FM-RDS receivers suitable for carrying out the method according to the invention are known in the art - e.g. from European Patent Application 0 333 194 - known.
  • Such an FM (FM) receiver is embodied by a twin tuner FM RDS receiver with a first or main tuner or a second or auxiliary tuner.
  • the main tuner is for tuning the receiver to a broadcast station with a desired audio program and for processing the audio program signals for sound reproduction.
  • the master tuner When the received transmitter also transmits RDS data, the master tuner also extracts the RDS data (RDS data telegram) passed through the received RDS transmitter signal, including a list of alternative frequencies (AFs) the same program as the one to which the recipient is actually tuned.
  • RDS data RDS data telegram
  • AFs alternative frequencies
  • CONFIRMATION COPY The format of an RDS data telegram is uniform in Europe.
  • further information is transmitted here that can be evaluated by car radios which have a corresponding RDS decoder.
  • the name of the received program can be displayed on a corresponding display or display of the radio (PS code).
  • the station list of the FM-RDS receiver is used to represent the selectable audio sources and / or menu functions simultaneously. How user-friendly or comfortable the station list can be displayed and operated depends on the respective FM-RDS receiver.
  • the length of the station list is limited only by the possible number of stations capable of transmitting in the FM band; It is therefore unproblematic and does not constitute a restriction for the realization of the present invention.
  • the "Interactive RDS Broadcasf" architecture is based on the following components from its basic structure: a. Manage, sort and prioritize audio sources
  • the FM modulated signals in the FM band must be made available to the RDS receiver with a level of approx. 50 - 70 dB ⁇ V to the FM RDS receiver.
  • the LF (low frequency) outputs of the FM RDS receiver are digitized, or the IF signal (intermediate frequency signal) of the FM RDS receiver is digitized using the FM RDS Demodulator decodable and can be given to the software decoder for the return channel.
  • the intermediate frequency is output by the radio and evaluated by the IRB.
  • the MPX [Multiplex] signal is assigned a unique identifier in the audio frequency range, which can be evaluated by the IRB at the output stage outputs.
  • the name of the audio source is calculated as PS code in the MPX signal without audio signal, frequency modulated and transmitted to the FM RDS receiver.
  • the resulting channel list displays all PS codes - the names of the audio sources - as "senders" in the FM RDS receiver.
  • the FM-RDS receiver first receives the station without an audio signal (silence) and at the same time - depending on the variant - the IF signal or the audio identification is made available to the IRB the IRB switches a PS code which is identical to a currently active transmitter with a corresponding PS code, switches the IRB to the selected audio source or executes the corresponding menu function.
  • the IRB need not interpret control commands but is based on conceptually static control information given by the operator.
  • the communication between IRB and operator is thereby clear and stable.
  • the IRB operating concept is also vendor-independent in every FM RDS receiver feasible - for example, in the domestic and mobile consumer electronics.
  • no CAN [Controller Area Network] is required for carrying out the IRB concept according to the invention, and further, no software adjustments are required with regard to the various vehicle manufacturers.
  • the steering wheel remote control keeps its original functions in the car.
  • the remote controls in consumer electronics are also fully usable.
  • the device according to the invention or the method according to the invention requires no restriction to a fixed number of favorites or memory locations.
  • station selection by scrolling and scrolling is still possible and requires no lazy or annoying for the operator switching from station to station.
  • the station change can rather take place without loss of time in any order.
  • Fig. 1 shows the technical realization / concept of a retrofit DAB tuner using FM RDS receiver with the "Interactive RDS Broadcast” media concept again.
  • the DAB station list must expediently be sorted by relevance. The longer a station is listened to, the further forward the station appears in the station list, and the statistics must also include stations not yet received, which is important, for example, for commuters or when traveling on holiday.
  • the transmitter management determines the first n transmitters on the basis of the DAB transmitter list and the statistics and allocates a frequency to each transmitter, which should preferably always be the same.
  • an MPX signal without audio is calculated by each of the first n transmitters.
  • the RDS protocol is reduced so that only the station name is transmitted.
  • the RDS data stream has a fixed length and duration (e.g., about 500 ms).
  • the MPX signals are frequency-modulated at the specified frequencies and stored in memory as "samples.” As background activity, more samples can be stored in memory than are currently output (switching performance).
  • a real-time process calculates an MPX signal with the DAB audio data including the RDS signal.
  • This RDS signal is intended to include radio text and selected data services as TMC (Traffic Message Channel) information.
  • TMC Traffic Message Channel
  • the thus generated live MPX signal is also frequency modulated at the fixed frequency and added to the sum signal of the samples from the memory in real time.
  • a DAC Digital Analog Converter
  • the mirror frequencies of the mixer are due to the system outside the FM band.
  • the calculated FM signal is mixed with the received FM band and fed to the PAG head unit via the FM input.
  • u.U. requires an amplifier that can also compensate for the attenuation of the combiner whose function is only needed to mix the sample "- DAB-" in previous FM operation.
  • the FM tuner in FM mode must return the IF in the same FM antenna cable back to the antenna diversity (antenna diversity) of the vehicle.
  • this IF signal can be evaluated.
  • the RDS information is provided by a simple tuner again.
  • this RDS information corresponds exactly to a transmitted RDS information, in which way the DAB module is informed which transmitter the operator wants to hear in each case.
  • the transmitter management sets the DAB tuner to this DAB transmitter and provides the audio signal and the data services to the real-time MPX coder without cracking Available. Up to this point, a new sum signal has already been calculated from the samples in the memory without the currently active transmitter.
  • the operator now hears the selected station. For example, if the operator selects the station "- NEXT-", the frequency of the active audio path changes to the "NEXT" frequency so that the audio heard by the last station can still be heard Samples a new sum signal calculated and used.
  • the PLL (phase locked loop) of the tuner mentioned above should preferably be dimensioned so that both the IF and the complete FM band can be received by the software.
  • the FM antenna should be used as a DAB antenna.
  • the antenna diversity of the vehicle should be integrated using a 10.7 MHz variable amplitude oscillator.
  • a possibility should be provided to operate the DAB tuner without ZF evaluation can.
  • a quiet identifier in the audio band can be sampled, which is determined when switching over to the power amplifier outputs.
  • Fig. 2 shows a block diagram of a DAB receiver having an FM connection to a head unit.
  • the DAB module for the aftermarket consists essentially of a DAB receiver, a powerful Digital Signal Processor [DSP], an FM tuner for the head unit coming intermediate frequency (IF) and an AC adapter according to the Automotive Standard.
  • DSP Digital Signal Processor
  • the use of additional hardware is not required because the operation of the receiver by existing control units - such as the control unit of the head unit - takes place.
  • the IF information available at the antenna input of many head units is used as feedback information channel.
  • an identifier on the audio signal can be used as the return channel, as a result of which the "interactive RDS broadcast" communication according to the invention can likewise be realized.
  • the head unit To switch to DAB, the head unit must be in FM mode.
  • the DAB module mixes to the FM antenna signal at a free frequency an FM signal without audio with the RDS information e.g. "- DAB-.”
  • This station appears first in the FM station list of the head unit because it has a higher transmission power compared to the FM station received through the antenna - or has a special character at the beginning in the case of alphabetical order.
  • the selected transmitter is included as RDS information in the IF provided by the head unit at the antenna input and is available to the DSP via an IF filter and the tuner.
  • the module switches to the DAB mode.
  • the FM antenna is switched off and n stations are sent from the DAB station list without audio with a defined frequency and DAB information (station name from the DAB tuner) to the head unit.
  • the DSP gets the feedback on which transmitter is selected via the IF and activates the audio signal for this transmitter. The operator is given the impression that the head unit in DAB mode behaves exactly as it had previously behaved in FM mode.
  • Fig. 3 shows "-DAB-" as a station in the FM station list according to a control concept, and the operator finds another station in the FM station list-DAB--, which switches to DAB mode when this station is selected ,
  • n e.g. 10
  • the transmitters that are offered in the station list can, in a preferred embodiment, continue to be stored on station buttons as in FM mode.
  • the use of the operating concept is manifold. Any analog or digital audio module (such as SDARS tuner, MP3 player, etc.) can be used instead of the DAB receiver.
  • the present invention relates to a method for displaying, preferably for receiving, transmitting and displaying digital received signals, preferably DAB received signals, on a first receiving device provided for receiving analog receiver signals, comprising the following steps: a) providing at least an additional receiving channel in a transmitter list of the first receiving device, wherein the additional receiving channel is associated with the digital received signals; b) generating the additional receiving channel by a second receiving device provided in addition to the first receiving device, which receives digital received signals and provides analogue received signals for the first receiving device; and c) selecting the digital received signals at the first receiving device.
  • the present invention preferably relates to a method in which, after selecting the additional receiving channel on the first receiving device, a plurality of analog receiving channels are generated by the second receiving device for the first receiving device.
  • the present invention preferably relates to a variant of the method of the above second variant, in which of the plurality of analog reception channels a reception channel contains the audio information and the other analog reception channels are displayed without audio information in the transmitter bar of the first reception channel.
  • the present invention particularly preferably relates to a method according to one of the second or the third method variant, in which the plurality of analog receiving channels generated by the second receiving device correspond to the digital input channels.
  • the present invention relates to a method according to one of the aforementioned of the first embodiment or all listed variants of the method in which the first receiving device is an FM RDS radio receiver and the second receiving device is a DAB receiving device and / or another digital audio source.
  • the present invention relates to an apparatus for representing, preferably for receiving, transmitting and displaying digital received signals, preferably using the method according to a variant or embodiment described above, consisting of a first receiving device for selecting receiving channels, a second receiving device for receiving of digital receiving channels supplied to the first receiving device for selecting the receiving channels.
  • the present invention preferably relates to the device described above, in which a switching device, preferably in the second receiving device is provided which switches after receiving the additional receiving channel, the reception of the analog received signals to the reception of digital received signals and / or vice versa and / or from the first receiving device to the second receiving device and vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

L'invention concerne un dispositif et un procédé de reproduction de signaux de réception numériques. La présente invention met à la disposition de l'utilisateur d'un récepteur radio classique un concept d'utilisateur universel et confortable pour la reproduction de signaux de réception numériques.
EP14772283.9A 2013-09-13 2014-09-15 Dispositif et procédé de reproduction de signaux de réception numériques Withdrawn EP3044890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013015101.5A DE102013015101A1 (de) 2013-09-13 2013-09-13 Verfahren zur Darstellung von digitalen Empfangssignalen sowie geeignete Vorrichtung hierfür
PCT/EP2014/002488 WO2015036126A1 (fr) 2013-09-13 2014-09-15 Dispositif et procédé de reproduction de signaux de réception numériques

Publications (1)

Publication Number Publication Date
EP3044890A1 true EP3044890A1 (fr) 2016-07-20

Family

ID=51619142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14772283.9A Withdrawn EP3044890A1 (fr) 2013-09-13 2014-09-15 Dispositif et procédé de reproduction de signaux de réception numériques

Country Status (7)

Country Link
US (1) US20160226609A1 (fr)
EP (1) EP3044890A1 (fr)
JP (1) JP2016535546A (fr)
KR (1) KR20160058839A (fr)
CN (1) CN105874731A (fr)
DE (1) DE102013015101A1 (fr)
WO (1) WO2015036126A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017202096A1 (de) 2017-02-09 2018-08-09 Bayerische Motoren Werke Aktiengesellschaft Empfangskonverter für digitale Radiosender

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2760552B2 (ja) 1988-03-17 1998-06-04 三洋電機株式会社 受信機
US6493546B2 (en) * 1999-03-05 2002-12-10 Xm Satellite Radio Inc. System for providing signals from an auxiliary audio source to a radio receiver using a wireless link
US6549774B1 (en) * 1999-11-04 2003-04-15 Xm Satellite Radio Inc. Digital audio service satellite receiver having switchable operating modes for stationary or mobile use
WO2005086394A1 (fr) * 2004-02-24 2005-09-15 Koninklijke Philips Electronics N.V. Appareil destine a convertir des signaux de radiodiffusion numerique (ran)
US7260356B2 (en) * 2004-03-18 2007-08-21 Xm Satellite Radio, Inc. Method and apparatus for wirelessly coupling a source signal to a radio frequency receiver
US20060126716A1 (en) * 2004-12-15 2006-06-15 Xm Satellite Radio, Inc. Digital remodulation
DE102005023091A1 (de) * 2005-05-13 2006-11-16 Dr. Stefan Ludewig und Johannes von Weyssenhof GbR, Vertretungsberechtigter Gesellschafter Dr. Stefan Ludewig, 30169 Hannover Vorrichtung und Verfahren zum Empfangen und Ausgeben von Rundfunksignalen
US7587167B2 (en) * 2006-03-08 2009-09-08 Visteon Global Technologies, Inc. Integrated digital radio module
US20080062053A1 (en) * 2006-08-31 2008-03-13 Xm Satellite Radio, Inc. Remote fm modulation antenna arrangement
US7822380B2 (en) * 2006-10-13 2010-10-26 Alpine Electronics, Inc. Interference prevention for receiver system incorporating RDS-TMC receiver and FM modulator
US7773938B2 (en) * 2006-11-28 2010-08-10 Delphi Technologies, Inc. Apparatus and method for FM wireless vehicle system interface
TWI437827B (zh) * 2009-08-03 2014-05-11 Wistron Neweb Corp 無線訊號發射器及相關多媒體系統
TW201220724A (en) * 2010-11-09 2012-05-16 Grandex Internat Corp Apparatus and method for automatic wireless link replacement
ITAT20110001A1 (it) * 2011-03-02 2012-09-03 Paser Srl Dispositivo elettronico dab-fm per l'acquisizione di dati audio in radiodiffusione digitale (dab) e loro conversione in dati audio in radiodiffusione fm (frequency modulation) stereo, pilotabile attraverso comandi al volante
GB2490145A (en) * 2011-04-20 2012-10-24 Frontier Silicon Ltd A DAB (RTM) receiver module, including tuneable impedance matching circuitry, for retrofitting DAB radio to a car

Also Published As

Publication number Publication date
WO2015036126A1 (fr) 2015-03-19
KR20160058839A (ko) 2016-05-25
CN105874731A (zh) 2016-08-17
JP2016535546A (ja) 2016-11-10
DE102013015101A1 (de) 2015-04-02
US20160226609A1 (en) 2016-08-04

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