EP0610313B1 - Systeme de radiodiffusion et recepteur de radiodiffusion - Google Patents

Systeme de radiodiffusion et recepteur de radiodiffusion Download PDF

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Publication number
EP0610313B1
EP0610313B1 EP92922255A EP92922255A EP0610313B1 EP 0610313 B1 EP0610313 B1 EP 0610313B1 EP 92922255 A EP92922255 A EP 92922255A EP 92922255 A EP92922255 A EP 92922255A EP 0610313 B1 EP0610313 B1 EP 0610313B1
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EP
European Patent Office
Prior art keywords
broadcast
dab
signal
data
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 - Lifetime
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EP92922255A
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German (de)
English (en)
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EP0610313A1 (fr
Inventor
Klaus Göken
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.)
Deutsche Thomson oHG
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Thomson Consumer Electronics Sales GmbH
Thomson Consumer Electronics Inc
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Priority claimed from DE4136068A external-priority patent/DE4136068A1/de
Application filed by Thomson Consumer Electronics Sales GmbH, Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Sales GmbH
Publication of EP0610313A1 publication Critical patent/EP0610313A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
    • 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]
    • 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

  • radio receivers with which in known way an analog FM radio and / or AM radio signal received, processed and the corresponding audio and / or video signals are reproduced in a suitable manner.
  • FM frequency modulation
  • DAB broadcast signals
  • DSR DSR
  • MAC MAC
  • DSR digital satellite broadcasting
  • DAB D igital A udio B roadcasting
  • the Satellite transmission in particular the terrestrial transmission in the VHF VHF range, is provided in a digitally operated single-wave network, the information from, for example, six stereo programs being interleaved and distributed over a total of 1536 carrier frequencies (multiple "digital" frequencies) of a 1.5 MHz multiplex signal.
  • Both DAB and DSR allow high-quality reproduction of the audio signals in CD quality.
  • Digital radio via broadcasting satellites and / or cable routes has been in the Federal Republic of Germany since 1986 introduced and e.g. from the brochure "Digital radio on broadcasting satellites ", information brochure of the Federal Minister for research and technology, known in 1982.
  • the DSR devices realized so far are only in the Able to receive and receive digitized radio broadcast signals to process.
  • An alternative reception of analog radio signals on the conventional wavebands FM, MW, KW and LW is due to the incompatibility between analog and digitized broadcast signals neither possible, nor intended.
  • DAB digital audio broadcast transmission system
  • DAB is generally used as an umbrella term for Broadcasting methods or systems in audio and / or Video area used where the sound and / or also Video signals (at least partially) digitally encoded is transmitted.
  • FM FM and / or AM broadcasting is below generally as an umbrella term for broadcasting processes or Systems are used in which the sound signals are at any Way frequency and / or amplitude modulated and / or the Video signals e.g. as with PAL or SECAM not in one Time division multiplex can be transmitted as with MAC.
  • the tuning takes place in the previous television (UHF) range lying multiple carrier frequencies every DAB radio signal as well as the special one DAB signal demodulation, whereas in the DAB decoder one Channel and only source decoding (with Error correction and concealment) of the digitized Broadcast signals is made.
  • UHF television
  • the DAB decoder one Channel and only source decoding (with Error correction and concealment) of the digitized Broadcast signals is made.
  • Retrofitting existing ones FM and / or AM radio receiver with DAB receiver and DAB decoder is possible in principle, but also cost-sensitive and with many difficulties e.g. Space problems connected.
  • Claim 19 describes one transmission arrangement according to the invention for an analog radio system
  • Claim 20 a transmission arrangement for a digital Broadcasting system e.g. DAB, MAC etc.
  • Claim 21 describes a data signal according to the invention.
  • a terrestrial cross-divisional broadcasting system for FM-FM and / or AM broadcast proposed that with a analog FM, FM and / or AM broadcast signal of a program a first control signal as a transmission specific Identification signal is transmitted, which from an FM and / or FM AM radio receiver with a suitable control signal decoder decoded when receiving the broadcast signal and is processed.
  • the first control signal is the same Program or program like the currently received program or another transmission system, e.g. DAB, assigned or destined for the VHF-FM transmission system in is in no way compatible. It also contains the first Control signal also optionally an information in which frequency range and / or which program position the corresponding DAB program can be received.
  • the first Control signal is used to control one with the FM-FM receiver combined or connectable radio receiver used for digital broadcasting (DAB, DSR, MAC). From the presence of the first control signal itself, it can already preferably to transfer the program DAB to be closed. With the first control signal thus information about a from the FM-FM / AM system technically fundamentally different broadcast transmission system such as. DAB, DSR or MAC, D2-MAC, HD-MAC, PAL PLUS etc. transferred.
  • the first control signal preferably contains all switching and / or control parameters for the one to be controlled Broadcast receiver for digital broadcasting (DAB, DSR, MAC), so that a quick switch to FM and / or FM AM reception on DAB reception is possible.
  • claim 2 is a solution similar to claim 1 using a second control signal for a digital one Broadcasting system e.g. DAB, DSR, MAC etc. and one for it suitable recipient described.
  • a digital one Broadcasting system e.g. DAB, DSR, MAC etc. and one for it suitable recipient described.
  • the first and / or second control signal is preferably only then broadcast, even if the same program or the same program in the other transmission system is transmitted.
  • a program is regionalized, if at least temporarily this condition is no longer met then the control signals are not transmitted.
  • FM radio and / or AM radio transmit the first control signal within the RDS data stream, so that the first control signal from the RDS decoder decoded and a digital radio receiver that works with the analog radio receiver connected in some way or coupled, is supplied.
  • the control signal is connected to the FM-FM receiver controlled digital radio receivers, e.g. switched on and to receive a certain program signal prompted.
  • the analog one Radio receiver controlled e.g. automatically muted, when the digital broadcast receiver is playing takes over.
  • RDS or the transmission of the first control signal with RDS serves surprisingly according to the invention as a crucial technological key or bridge link between the previous analog broadcasting and the future Broadcasting like DAB, although RDS is according to its actual Determination according to and only for the analog Broadcasting is provided.
  • DAB FM, FM and / or AM
  • first or second control signal e.g. also a pilot carrier known from the television transmission system or a signal similar to ARI (Driver Broadcasting Information) or a certain auxiliary frequency or a certain one Phase value are used, such a control signal preferably transmitted outside the RDS transmission channel becomes.
  • ARI Driver Broadcasting Information
  • For coordinating the digital and analog radio receiver are both receivers or receiving parts over at least a control line connected to each other. At least in one the two receivers is a control data evaluation circuit provided that the signals transmitted via the control line evaluates and controls both receivers.
  • Combination radio receiver to train a first Radio receiving section for reception, processing and playback of analog radio signals, e.g. FM-FM and / or AM, and a second radio receiving part for reception, Processing and reproduction of digitally coded Includes broadcast signals (DAB, DSR), being for both Radio reception parts one or more common assemblies, in particular, a common control unit is provided are. So one or more assemblies such as Antenna, HF / IF stage, controls, speakers, LF signal processing, additional data decoder, display, Power supply and other suitable circuit parts etc. are arranged once in the radio receiver, the however, are assigned to both parts of the radio reception. Thereby can be a compact design of the radio receiver achieve that as fully mobile, portable and stationary receiver the advantages of digital reception like DAB compared to the previous FM-FM reception impressive way to make it clear to the user.
  • DAB digitally coded Includes broadcast signals
  • the radio receiver according to the invention is not only in the Location, analog as well as digitally coded audio and / or video broadcast signals to receive and process, but is characterized in particular by the fact that individual suitable Components or assemblies only once in the radio receiver are formed, preferably several of the aforementioned Broadcast signals, e.g. PAL / MAC or FM-FM / DAB, can be received, processed and reproduced and no impairment in the playback quality of the received Audio signal arises. Due to the unique arrangement of individual components or assemblies for both sub-recipients can be an economical implementation of such a hybrid receiver be achieved, the consumption of material and Resources is limited to the essentials and the jointly intended assemblies or components in the best possible way be exploited.
  • Such a radio receiver according to the invention has in particular the advantage that when DAB is introduced, the analogue radio broadcasting on the classic wavebands can be received and played back, increasing comfort and the associated playback quality considerably improved.
  • the user is one of the invention Broadcast receiver does not depend on when DAB in what national or European scope is introduced and FM radio broadcasting gradually or completely abandoned becomes. Even after the complete abandonment of individuals or all analog FM radio signals is an inventive Radio receiver still usable.
  • FM-FM radio receiver for example FM-FM reception set and receives the NDR 2 program there at 99.8 MHz, it makes sense if the same program too is offered via DAB as another alternative frequency a "digital" multiple frequency of DAB broadcast with the value of the corresponding program position of the desired Program in the DAB data stream within the AF list of the To transmit FM-FM signal.
  • This "digital" AF and / or represents the value of the program position of the desired program represents the first control signal, which by means of a Control signal decoder, here an RDS decoder in analog Receiver decoded and in a data processing unit can be processed accordingly.
  • the analog / digital The radio receiver can then be operated using the data processing unit so that when receiving such first control signal is switched to DAB reception to achieve the best possible playback quality. It is also useful, also via a DAB additional signal channel of the digital program signal the data from alternative To transmit frequencies of the AM or FM radio broadcast signals.
  • the data format of the additional DAB data channel is preferred compatible with the RDS data format, so that an RDS data evaluation circuit also for the evaluation of additional DAB signals can be used.
  • a radio receiver 0 which is capable of DAB broadcast signals as well as FM FM / AM broadcast signals received, processed and reproduced in a suitable manner.
  • Individual modules are used for a digital receiver 5 as well as common for an FM FM / AM receiver section 6 utilized.
  • Such a radio receiver can be used as a hybrid receiver can be referred to as it is fundamentally different Receiving parts 5 and 6 or an analog and has a digital reception train, as many as possible Assemblies or circuit parts combined for both receiving trains or "married".
  • Such a radio receiver can also be a television receiver 80 according to FIG. 8, the combined circuits for reception and for processing analog as well as digital audio and / or video signals contained in one or more of the well-known standards such as PAL, SECAM, NTSC, PALPlus, MAC, D2-MAC, HD-MAC etc. are transmitted. Additional signals like the first or second control signals can also be in one Vertical blanking gaps like the VPS or television text signals transmitted separately or together with these.
  • the well-known standards such as PAL, SECAM, NTSC, PALPlus, MAC, D2-MAC, HD-MAC etc.
  • the analog as well as digitally coded are via an antenna 1 Broadcast signals received by the transmitters and one common HF / IF stage 2 supplied.
  • the DAB reception frequencies in the previous transmission spectrum for FM-FM / AM can a single RF / IF stage 2 suitable for the transmission spectrum Tuning unit or tuner can be used.
  • the reception frequency of the HF / IF level 2 can be extended to this or for both Receiving parts 5 and 6 are generally two or more separate HF / IF stages 2a and 2b according to FIG can be set to the required frequencies can.
  • each receiving train 5 and 6 optimized and adapted and / or standardized and interchangeable HF / IF stages or HF / IF modules, because hereby in particular the observability of the respective Can recipient trains improve. This can be done easily switching from various programs from DAB to FM-FM or vice versa without delay in switching and thus reach without playback pauses. Will the Redistributed frequency range of DAB or FM-FM, only has to a replacement of the corresponding HF / IF stages or modules made that are designed for it.
  • the HF / IF stage 2 is coordinated by a joint body central control circuit or control unit (microprocessor) 3 realized.
  • a common one is also advantageous Housing the receiver shown in Fig. 1 in a single housing, so that a compact design is guaranteed is hardly about the space required by previous analog receivers goes out.
  • the received digitally coded but analogue transmitted audio signals are digitized by means of an A / D converter.
  • the HF / IF stage 2 as a digital HF / IF stage or HF demodulator, the digitization of the received signals can already be carried out there.
  • the actual digital signal processing is handled by at least two highly integrated circuits, an IF signal processor and an audio signal processor in the DAB receiving section (both not shown).
  • COFDM method described in "Advanced digital techniques for UHF satellite sound broadcasting", EBU Technical Center, September 1988
  • transmitted digital broadcasting signals comprising a channel decode
  • MUSICAM is a method for baseband coding of audio signals. Achieved through the use of psychoacoustic phenomena it towards e.g. a linear coding with 16bit / 48kHz data reduction per mono signal 96kbit / sec, i.e. a reduction by a factor of 8.
  • COFDM represents the channel coding in DAB and essentially solves that Problem of multipath terrestrial reception. Echo signals even contribute positively to the useful signal.
  • the key to this is the distribution of the data stream over many e.g. 1536, Carrier with 4-PSK modulation of the individual carrier, orthogonal Carrier arrangement, the introduction of a guard interval for using the multi-way signals and interleaving the program signals in the time plane.
  • A is used to select the program DAB tuner on each of the COFDM frequency ranges (all in a frequency range, e.g. TV channel 12) can be tuned, the COFDM decoder from this multiplex signal a stereo signal selects.
  • the HF / IF part 2 delivers a signal from which the IF signal processor extracted the data stream contained in the DAB circuit 5.
  • the data stream is structured as a frame (frames), each frame first a so-called headboard Header that contains the status information of the frame includes.
  • Another part of the framework includes data, which are suitable for error detection.
  • a The next part of the frame represents the actual digitized ones Audio data or audio samples.
  • Another Part of the frame the so-called stuffing bits placed between the audio data and scale factor protection bits.
  • the decoder can display the information of the protection bits, which are called parity bits or CRC words (Cyclic Redundancy Code) are designed for scale factor error correction or -Use concealment.
  • Another part of the framework are Additional signals so-called "program associated data" which also partially arranged in the head part and on the transmission side are defined.
  • FM-FM / AM receiving part 6 is known from the pre-filtered VHF FM / AM signal from the HF / IF preamplifier using Mixing in a mixing stage, demodulation in a demodulator and reinforcement and NF processing in one NF stage etc. obtained an LF signal and at the output of the circuit 6 made available.
  • Both receiving parts 5 and 6 are with a central control unit 3 or data and audio signal processor via uni and / or bidirectional control lines connected and are controlled by this or switched on / off. It can over an operating device 9 each the desired program in the desired setting individually for each receiving train can be set.
  • the central control unit 3 which is designed as a microprocessor, is now each one of the signal outputs 7 or 8 of the circuits 6 or 5 muted and thus the desired audio signal played on the speakers 16.
  • the of the is also suitable for LF signal processing central control circuit 3 controlled output control amplifier circuit 11, which has inputs that match the outputs 7 and 8 of the two receiving parts 5 and 6 are connected. Shielding means (not shown) are where necessary provided that prevent individual assemblies be disturbed by other modules.
  • the central Control unit 3 appropriate operation and programming of the two receiving parts of the hybrid receiver will.
  • a common display 10 or screen 80 the desired information such as program name and / or area name via digital or analog Broadcast reception as well as operating and / or program steps displayed.
  • cross-divisional control signal transmission is a quick display of all of the area names possible via which the desired program can be received can.
  • the DAB-specific digital signal processing circuit 5 has a digital output 12, via the digitally coded Additional and / or user data and / or control signals output and with one on the hybrid radio receiver connected recording and / or playback device such as DAT, DCC, MOD can be recorded and played back.
  • the digital output 12 with the output of the Channel decoders connected, so that in a to the output 12th connected DAB recorder with a DAB source decoder data-reduced data and recorded as 16-bit PCM signals can be played.
  • the hybrid radio receiver a first analog output 13, its analog values essentially in terms of information content the digitized values at output 12 of the DAB-specific digital signal processing circuit 5 correspond. The Signals from this output can also be transmitted using a connected recording and / or playback device be included.
  • the hybrid radio receiver also has a second one analog output 14 on that with the output of the FM / AM signal processing circuit 6 is connected. Both analog Outputs can also physically act as a single output be carried out on which always the NF signal to be reproduced or there is a first or second control signal and e.g. from a comparison measuring device is checked. It can be useful, also for the control unit 3, a separate unidirectional and / or bidirectional data input and / or output line 35 to be provided, via which e.g. Control data of the control device available at an output of the receiver and / or tax data, e.g. Details like a CT code known from RDS (Clock-Time and Date) or information about the type of transmission, for programming the Control device are fed, which are then stored can be or a recording / playback device for Control this can be fed.
  • RDS Lock-Time and Date
  • the hybrid receiver also has a central memory 15 in which the with the analog broadcast signals like also with the additional signals transmitted with the digital radio signals as well as first and / or second control signals be saved and appropriately coordinated or signal processing or control of the individual circuits or circuit parts can be used. Furthermore 15 other data processing programs are in the memory and / or data for controlling voting, program setting, Playback, operation, display etc. saved.
  • the RDS signals, additional DAB signals and / or the first and second Control signals are generated by the central control unit 3 processed and evaluated. A pre-evaluation of the above Signals with separate data processing and control circuits (not shown) in the FM-FM receiver section 6 and DAB receiving part 5 is also possible and can also be advantageous be.
  • GT is four bits long Group type code, in this example for group two.
  • PI code program chain identifier
  • PI code program chain identifier
  • the PI code is not for direct viewing provided that it is individual to each radio program assigned and is used to identify FM radio stations that broadcast the same program. This will Receiving part 6 in connection with one contained therein RDS decoder and the central control unit 3 in the position to an alternative FM frequency looking for, in the event that the tuned station becomes too bad.
  • the AF code consists of a code (8 bits), which is an alternative carrier frequency of the contains the program listed in the PI code.
  • Fig. 2b shows that around a first control signal or second Identification date (claim 8) or control information extended data format 2a which from an FM FM / AM transmitter 60th 6 is broadcast.
  • 2c shows a data format, in which the length of the data format according to FIG. 2a is obtained remains, however an AF code through an 8 bit information about a DAB program channel is replaced. While in data format 2b the block length of the format is expanded and the Number of AF codes compared to Fig. 2a is preserved, true in Fig. 2c the block length with the data format in Fig. 2a matches, but with one AF code word less.
  • the 2c may possibly some advantages with the To have data processing with conventional RDS decoders.
  • the digitized first control signal becomes a safe transmission with its own error protection or special provided error-correcting data.
  • DAB codes in the Broadcast receiver 0 with RDS decoder primarily examined in itself the radio receiver can already quickly determine that the program currently being received via FM-FM or the program is also transmitted and received via DAB is.
  • the DAB code optionally contains next to the information the frequency range to which the multiple limits are distributed, including the information at which program point the program in one of several program positions
  • Data frame with several programs is arranged.
  • a DAB code in the list of AF codes can also use other tags in the RDS data office be made e.g. a typical one for DAB broadcasting Group type number GT, which for previous VHF-FM broadcasting none Applies or is not intended. Because the group type number is always present at the beginning of each block, is such a mark with DAB's own GT, e.g. one more GT number not assigned between the numbers 8 - 14, possibly For a quick evaluation is very advantageous, especially if if after the DAB-own GT also the corresponding to the current program or radio broadcast corresponding Program position is in the DAB area, so the corresponding immediately Program position can be called. Furthermore do not occur when using a DAB-own GT number Compatibility problems for the previous ones RDS decoder / receiver and their evaluation circuits on there ignore a GT number not defined for them.
  • an RDS signal according to FIG. 2b or 2c is received, it is registered the RDS decoder or the data processing assigned to it and control circuit (Fig. 5), e.g. the central Control unit 3, based on the evaluation of the first control signal, that a particular program or program, for example NDR 2, can also be received via DAB.
  • a particular program or program for example NDR 2
  • the hybrid radio receiver switches automatically or after Operation of a button 30 for DAB reception by means of the DAB reception part 5 and switches the FM-FM receiver off or in a stand-by mode or continues to receive the set one FM-FM program, which is muted.
  • a alternative frequency may no longer be called. The best possible reproduction quality is thus achieved.
  • Switching from FM reception to DAB reception can thus can be realized as quickly as possible without the user itself must make such a switch. Is this first control signal or the DAB code after one or more times Try not to be decodable or evaluate, so it will desired program via the preset FM-FM frequency called or based on a known PI and / or AF code evaluation sought an alternative frequency with which the best reception is possible.
  • the PI code in the Control unit 3 assigned to the RDS decoder is evaluated.
  • the transmitter identification of the PI code e.g. "NDR 2" as binary Value.
  • the station IDs of the Contains stations that your program also via DAB or DSR broadcast and by means of a comparison of the current received station identifier and the comparison list, can the switching criterion to DAB or within a very short time DSR reception can be determined.
  • the Comparison list saved until it is replaced by a new one Comparison list is replaced.
  • the program identification signal SK-PI for NDR 2 matches with one of the program identification signals listed in the comparison list SK-DAB 0 ... n either opens automatically DAB reception of the desired program switched or the User displayed, so that switching by pressing a specific key e.g. the button 30 of the operating device 9 (Fig. 3) can be made.
  • a control signal for Activation of a specific program in the DAB reception section In this case, the PI code of the RDS signal used as the first control part signal and evaluated accordingly. Instead of the PI code, you can also other radio data information such as Identification of the traffic radio station TP the PS code (station name or name of the program chain) evaluated as a switchover criterion will.
  • an input unit 9 provided therefor (e.g. a speech recognition system that uses the human voice converted into electrical operating commands) in a simple way the best reception of the desired program is guaranteed will.
  • the radio receiver is a television receiver e.g. 8, when receiving one of one Broadcast studio 83 originating program via PAL a corresponding first control signal sent if the same program e.g. is also transmitted via MAC with a satellite and on the TV screen e.g. "MAC" is displayed.
  • a TV receiver 80 which receives PAL as well as MAC TV signals and can process, when receiving such Program automatically or after operating a "MAC / PAL" key 81 on the remote control 82 for MAC reception e.g. D2-MAC or HD-MAC switched and thus the user the television signal offered with the technically best audio / video quality.
  • the radio receiver described above as a MAC / PAL video recorder or DAB / FM FM recording device, so a recording of a broadcasting contribution in the operating mode e.g. MAC performed at the best sound and / or video quality can be guaranteed.
  • a switching criterion for one PAL or MAC recording of a transmitted via PAL and MAC The program can also use the first or second control signal be used.
  • a quick one Switching the receiving parts 5 and 6 on or off by means of the central control unit is easy, especially then if the receiving part is switched off in one Stand-by mode or the muted receiver 5 or 6 receives the same program as it does not muted receiving part 6 or 5.
  • addressable buffer (not shown) can also be easily achieved that switching between the receiving parts is not a short one or longer disturbing playback pause.
  • the bit error rate BER Bit error rate
  • the bit error rate exceeds a predetermined value i.e. the reception quality drops below a predetermined one Value
  • the Radio receiver anyway on FM FM reception of a particular one Program is coordinated and reproduces this is on Playback of the DAB receiving train 5, preferably at the same time Muted the analog reception train 6 switched, if a signal from the bit error measurement / correction circuit there is enough DAB reception quality is a predetermined value.
  • a signal from the bit error measurement / correction circuit there is enough DAB reception quality is a predetermined value.
  • the operating device 9 has range selection buttons 17, programmable memory location selection buttons 18, a "Order Quality "button 30, a receive frequency input and Program entry 19 with numeric keyboard and a Transmit memory 20 on.
  • the buttons 17, 18 are with the Memory 20 as well as connected to a control unit 24, which is identical to the control unit 3 or separately in the Broadcast receiver is designed.
  • the input unit 19 is connected to the control unit 24.
  • the memory selection buttons 18 as well as the program position input 19 are for setting the operation of FM-FM reception as well as DAB suitable.
  • At Programming the memory location selection buttons 17 registers the Control unit, whether that assigned to a program key Y Program in area X can also be received via DAB.
  • the Button 30 or the DAB range selection button 17 of the same program button 18 the corresponding program position for the DAB area assigned and the corresponding data for program setting stored in the corresponding location in the transmit memory 20. This can simplify programming. This type of programming can also be reversed from DAB area offices to other reception area locations will.
  • Fig. 3 is from the control unit determined by evaluating the first control signals, that the NDR2 and FFN programs can also be received via DAB are.
  • the control unit determines the memory locations for the corresponding keys 18 (one and four) in the DAB area.
  • the control device is that the user one of selected program always in the best playback quality is offered. He may only notice the Playback quality and the display unit 10 that when called an FM FM or other analog program that Receiver changes independently to DAB or DSR reception.
  • the control unit switches the receiver automatically when the memory selection buttons one and four are called or only after pressing button 30 "Best quality" DAB reception at. If you then press button two is switched back to FM reception and the assigned one Program WDR1 set (see also Fig. 5).
  • the one Range selection button selected FM-FM range, but not that The selected program is therefore activated when the buttons 18 are pressed leave if the selected program is too is received via DAB.
  • the display unit 10 shows when called Program other than the program name (here NDR 2) and the current area names (here DAB) also the alternative ones Area names (here FM and AM), via the NDR 2 too is received. For switching to the alternative areas FM or AM becomes the corresponding range selection button 17 operated.
  • Program other than the program name here NDR 2
  • DAB current area names
  • FM and AM alternative ones Area names
  • the reception frequency input unit or numeric keypad 19 is for direct selection of a program via DAB as well FM-FM / AM suitable. Since the program point for DAB or DSR programs but also regularly for television programs is a two-digit number, it differs fundamentally from a selected frequency value that is always more than two Has digits. With an evaluation circuit in the control unit 3 can be entered after entering two digits can be determined whether DAB reception with the selected range is called or not. This is a selection of all receivable Programs even without pressing the area selection buttons 17 and / or memory location selection buttons 18 possible.
  • the input unit 19 has a data release key DFÜ with enter function.
  • the number for the program position can also be reached through the Button 30 or the DAB button. It is advantageous if each program has its own numerical program position identifier having.
  • the numeric keypad 19 with a decimal / binary converter in connected to the control unit, which is entered from a Number between 0 ... 255 generates an 8 bit binary word, where the association between a decimal number and a Binary value can also be set individually by the user can.
  • FM or AM or DAB / DSR operation the binary Value of the entered decimal number then from the control unit evaluated as program reference number.
  • the program reference number is part of the PI code transmitted with RDS (bits 9 to 16) of the desired program and is stored in the station memory 20 saved.
  • each program is individual Program reference number or typeface data are assigned So the call of a program also by entering the Numeric keypad possible without the user having the respective Receiving frequency knows.
  • the recipient provides PI codes or the program reference numbers the required reception frequency or the desired one Program. It may be necessary to save the PI codes first start a station search so that the receiver receives the transmitters receivable in its area such as also "got to know" their program reference numbers.
  • the radio receiver in Fig. 1 already has circuitry a very compact design, since many modules for both reception parts can be used together. In individual cases it is quite conceivable to separate some assemblies for to provide both receiver trains, but to use them jointly for both.
  • a separate FM FM receiver with a separate DAB or DSR receiver e.g. for the purpose of retrofitting only a few modules can be interconnected be used jointly for both receivers.
  • 4 is shown how such a retrofit for one FM FM receiver 21 can look like.
  • the key is here a common interface 22, via the control data such as also user data from the DAB receiving part 23 to VHF receiver and vice versa.
  • the interfaces are in particular the inputs and outputs of both Receiving parts as well as the corresponding lines between the entrances and exits.
  • the FM-FM receiver 21 points an antenna 1 and speakers 16 for playback and all for reception, processing and playback Circuit parts for analog audio signals.
  • the one at the FM FM receiver connected via an interface 22 DAB receiver 23, like receiver 21, has its own Control device, display and LF signal processing circuit (not shown). over the interface 22 is the DAB receiver 23 directly with the Antenna output connectable. Furthermore is one bidirectional control line provided in the interface, via which the first or second control signals each other receivers for control purposes. Means the interface is also a common power supply both recipients possible.
  • the NF signals at the output the DAB-NF level are directly through the interface supplied to the speakers 16.
  • the setting of the playback parameters like volume, balance, stereo / mono, etc. optionally with the controls of both receivers or a recipient possible.
  • the corresponding operator control signals from the DAB receiver are also via the Interface 22 fed to the FM-FM receiver and processed there.
  • the FM-FM receiver 20 points like the receiver 6 shows an RDS decoder and a suitable RDS signal processing circuit on. Is a transmitted with an RDS signal the first control signal is received by the DAB receiver a switching pulse is supplied, which turns on the DAB receiver and the one currently received via FM-FM Calls the program assigned to the program position.
  • the transmitter arrangement 60 receives the program signals P1 from fed to a broadcasting studio (not shown).
  • the Control signal encoder outputs the first via an output 66 Control signal to an input 67 of the mixer 64, which the first control signal with the radio broadcast signal from the VHF-FM modulator unit 62 mixes and modulates with it.
  • the first control signal is in the present example in the VHF-FM broadcast signal a pilot carrier or one Auxiliary frequency, which M times 19kHz from the carrier frequency away. M is a natural number e.g. Four.
  • a transmission arrangement S2 (not shown) according to claim 17 can be generated with a second control signal encoder build up the second control signal accordingly, the second control signal or first characteristic data (see claim 8) inserted as additional signals in the digital signal stream are.
  • DAB provides several, preferably six, stereo programs one inside the other nested on a multitude according to the COFDM method to transmit carrier frequencies.
  • one DAB transmission are the audio signals but also the program-accompanying signals from e.g. six programs included.
  • Data bits which information about the number of programs transmitted programs transmitted in a COFDM multiplex frame.
  • a signal accompanying the program is also the transmitter identification or the station name e.g. NDR 2, FFN etc., which on the Display 10 as shown in Fig. 3 can be displayed.
  • a So DAB receiver that receives a data frame receives then always six programs at the same time, of which only one is played.
  • the station buttons 30 so that Allocate a display field that calls up the desired one Program is clear.
  • Such an arrangement of the keys is in an analog radio receiver known from the DE-PS-2758034. There you have to call up a desired one However, the transmitter always first receives the corresponding reception frequency be reset. They are also on the display a variety of channels appear that are not receivable at all are. 9 also shows the number of station buttons 30 the number of programs transmitted in a multiplex signal adapted and limited to it.
  • the transmission channel e.g. FM, AM, DSR etc. to receive a displayed program otherwise is, provided that there are corresponding second control signals are also broadcast over the DAB transmission channel.
  • Farther can also contain division information assigned to a transmitter News, pop, culture, etc. are displayed when broadcast by the broadcaster is carried over.
  • an indicator that indicates which station is currently being played can be a suitable one Marking e.g. Font size change, bold, Background changes etc. in the display field at the corresponding Channel name or a special marking of this channel name assigned button 40, e.g. by lighting up an in the button arranged LED, serve.
  • the full one Channel names of all channels can also be a one-digit number Characters per station that can be received on the display are displayed, so that the display itself in its size is compact and takes up less space as shown in FIG. 9.
  • the keys 40 can also be omitted if that Display field has a "tip-in” function or as a "touch screen "is executed, so that only one position in the display field must be touched where the desired transmitter is located. After touching the display field at the point, a signal will be given transferred to the control unit and the desired setting performed.
  • a display unit as shown in FIG. 9 or display 10 can be used for any DAB receiver use, even if the second control signals are not transmitted and the receiver is not using an FM radio receiver connected is.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Claims (23)

  1. Procédé pour la transmission de signaux radio UKW-FM et/ou AM, caractérisé en ce que, avec ce signal radio UKW-FM et/ou AM, est transmis temporairement ou en permanence un premier signal de commande (code DAB, DAB-GT), qui contient une information de commande sur un autre système de radiodiffusion d'une autre espèce (DAB, DSR, MAC) et est utilisé pour l'enclenchement et la commande d'un récepteur radio (5) pour radiodiffusion numérique (DAB, DSR, MAC) et/ou la mise à l'état muet d'un récepteur radio (6) pour signaux radio UKW-FM et/ou AM.
  2. Procédé pour la transmission de signaux radio codés numérique (DAB, DSR, MAC), caractérisé en ce que, avec le signal radio codé numérique, est transmis temporairement ou en permanence un second signal de commande qui contient une information de commande sur un autre système de radiodiffusion d'une autre espèce (UKW-FM et/ou AM) et est utilisé pour l'enclenchement et la commande d'un récepteur radio (6) UKW-FM et /ou AM et/ou la mise l'état muet d'un récepteur radio (5) pour signaux radio codés numérique.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le premier ou le second signal de commande est alors transmis avec le signal de programme seulement lorsque le même programme est aussi transmis dans le système de transmission auquel le premier ou le second système de commande est affecté.
  4. Procédé selon la revendication 1 ou 3, caractérisé en ce que, avec un signal radio émis en UKW-FM et/ou AM, un signal de données radio (RDS) est transmis, qui est décodé par un récepteur radio FM et/ou AM avec un décodeur de signaux de données radio comme premier décodeur de signal de commande à la réception du signal radio et est utilisé d'une manière appropriée dans le récepteur radio FM/AM p.ex. pour l'accord, l'affichage, etc... et en ce que le premier signal de commande (code DAB) est transmis avec le signal de données radio.
  5. Procédé selon la revendication 2 ou 3, caractérisé en ce que, avec le signal radio codé numérique (DAB, DSR, MAC) émis, un signal supplémentaire est transmis, qui est décodé par un récepteur radio pour radiodiffusion numérique (DAB, DSR, MAC) a la réception du signal radio et est utilisé d'une manière appropriée p.ex. pour le réglage du programme, l'affichage, etc... et en ce que le second signal de commande est transmis avec le signal supplémentaire.
  6. Procédé selon la revendication 1 ou 3, caractérisé en ce que le premier signal de commande est transmis sur un canal séparé du canal de transmission des données radio.
  7. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, à la réception du premier et/ou du second signal de commande, le récepteur radio UKW-FM et/ou AM et/ou le récepteur numérique (DAB, DSR, MAC) traite ce signal dans un circuit (3) d'évaluation des données de commande, le stocke dans une mémoire (15) et/ou l'affiche sur un dispositif de présentation.
  8. Récepteur radio avec un premier élément de réception radio (6, 21) pour la réception et le traitement des signaux radio UKW-FM et/ou AM et avec un second élément de réception radio (5, 23) pour la réception et le traitement des signaux audio codés numérique (DAB, DSR, MAC) selon l'une des revendications précédentes, pouvant être muni d'un ou plusieurs blocs communs aux deux éléments de réception radio, tels que p. ex. antenne (1), élément de commande (9), haut-parleurs (16), alimentation en tension, décodeurs de données supplémentaires, etc... caractérisé en ce que le récepteur radio (O) comporte une unité de commande centrale (3) dans laquelle des premières données caractéristiques assignées à un programme sont comparées avec des secondes données caractéristiques assignées à un programme (code PI, code AF), les premières données caractéristiques étant affectées à un système de radio codée numérique (DAB, DSR, MAC) et les secondes données caractéristiques étant affectées à un système de radio UKW-FM et/ou AM, et en ce que le récepteur radio (O) et les premier et/ou second éléments de réception radio (5, 6) respectivement sont commandés en fonction du résultat de la comparaison.
  9. Récepteur radio selon la revendication 8, caractérisé en ce que le récepteur radio (O) comporte une mémoire (15) connectée à l'unité centrale de commande (3), dans laquelle sont stockées de premières données caractéristiques de ceux des programmes qui peuvent être reçus sur la radiodiffusion numérique (DAB, DSR, MAC), l'unité de commande (3) étant formée comme circuit de traitement et d'évaluation de donnés.
  10. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que seulement après l'actionnement d'une touche (30) du dispositif de commande (9), ou bien automatiquement, la réception/reproduction est basculée de UKW-FM et/ou AM sur la radio codée numérique (DAB, DSR, MAC) lorsque le circuit de traitement et d'évaluation de données et/ou l'unité de commande (3) constate, au moyen de l'évaluation du signal de commande, que le programme reçu en UKW-FM et/ou AM est aussi transmis sur la radiodiffusion numérique (DAB, DSR, MAC) et/ou peut être reçu avec une qualité suffisante.
  11. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, comme premier signal de commande pour la commande du second élément de réception (5), on utilise le signal RDS ou une partie de celui-ci (code PI, code AF, GT, code DAB)
  12. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le récepteur radio UKW-FM (6) et/ou le récepteur radio numérique (5) présente une sortie de commande (35) uni- ou bidirectionnelle, à laquelle on peut prélever le premier et/ou le second signal de commande.
  13. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le récepteur radio comporte un unique décodeur et/ou un unique circuit d'évaluation de données (3), qui décode et/ou traite le premier signal de commande et/ou les signaux de données radio (RDS) de même que les signaux radio numérisés (DAB, DSR) et/ou leurs signaux supplémentaires.
  14. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'on bascule automatiquement ou après actionnement d'une touche (30) de la réception DAB d'un programme P1 sur la réception en UKW-FM ou AM du programme P1 correspondant lorsque le récepteur arrive à la limite de rayonnement de la zone de diffusion DAB et/ou une correction d'erreur des données audio codées numérique dans un circuit de correction d'erreurs ne fonctionne plus dans le second élément de réception (5).
  15. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, pour la commande du récepteur radio (O) sont prévues des touches (18) programmables de numérotage des adresses de mémoire, une touche (17) de numérotage de gamme et une mémoire d'émetteur (20), qui sont connectées avec l'unité de commande (24, 3), que le même programme (P1) pour UKW-FM et pour la radio codée numérique (DAB, DSR, MAC) est automatiquement assigné à une touche (18) de numérotage des adresses dans la mémoire d'émetteur (20), lorsque ce programme (P1) peut être reçu sur UKW-FM et aussi sur la radio codée numérique.
  16. Récepteur radio, en particulier récepteur radio DAB selon l'une des revendications précédentes, caractérisé en ce que le récepteur radio (5, 23) présente des moyens pour le traitement de signaux codés numérique, que les signaux codés numérique sont répartis en une quantité de cadres, que chaque cadre présente au moins trois segments, à savoir un segment pour l'affichage du début du cadre (header), un segment avec les informations de contrôle (control bits) et un segment qui contient l'information audio, que chaque cadre et/ou les cadres successifs présente(nt) les informations audio et les informations supplémentaires de plusieurs programmes radio, que les informations supplémentaires présentent une identification de programme et/ou d'émetteur de chacun des programmes transmis sur le canal de transmission ou dans le cadre, p.ex. NDR2, FFN, SFB, etc... et/ou que le récepteur radio présente une unité d'affichage (10) sur laquelle sont affichés tous les noms d'émetteurs du programme qui émettent sur un canal de transmission DAB dans plusieurs cadres et/ou dans un cadre DAB.
  17. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'un récepteur séparé UKW-FM est connecté avec un récepteur séparé pour radio codée numérique (DAB, DSR, MAC) par une ou plusieurs lignes pilotes (35) uni- et/ou bidirectionnelles et/ou avec une unité de commande (3).
  18. Récepteur radio selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le récepteur radio UKW-FM (6) présente un microprocesseur (3) pour l'évaluation des données RDS décodées, que le microprocesseur compare les données d'identification des chaínes de programme (code PS) et/ou les données d'identification d'émetteurs (code PI) et/ou une autre donnée de référence correspondante du programme UKW-FM (P1) reçu actuellement avec des données d'une liste de comparaison stockée dans la mémoire, que la liste de comparaison contient des informations sur le programme à recevoir par la radio codée numérique (DAB, DSR, MAC), que, lors de la concordance de données de la liste de comparaison avec les données RDS, un signal de commande et/ou des données de commande sont envoyés à une sortie de commande du récepteur radio et/ou la concordance est affichée sur le dispositif d'affichage et/ou un récepteur radio numérique (DAB, DSR, MAC) connecté avec l'élément de réception UKW est enclenché et/ou commandé.
  19. Emetteur (60) pour un système de radiodiffusion UKW-FM et/ou AM selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'émetteur (60) présente un premier codeur (63) de signal de commande pour l'émission d'un premier signal de commande (SS1), que l'émetteur (60) émet, simultanément avec un signal radio UKW-FM et/ou AM d'un programme de radio et/ou de télévision (P1), le premier signal de commande lorsque le même émetteur (60) et/ou un autre émetteur (68) diffuse aussi le même programme de radio et/ou de télévision (P1) sur la radio codée numérique (DAB, DSR, MAC), et/ou que le premier signal de commande est affecté à un système de radiodiffusion (DAB, DSR, MAC) non compatible avec le système de radiodiffusion UKW-FM et/ou AM.
  20. Emetteur (68) pour un système de radiodiffusion numérique (DAB, DSR, MAC) selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'émetteur (68) présente un second codeur de signal de commande pour l'émission d'un second signal de commande, que l'émetteur émet le second signal de commande avec un signal radio codé numérique (DAB, DSR, MAC) d'un programme de radio et/ou de télévision (P2) lorsque le même émetteur (68) et/ou un autre émetteur (60) diffuse aussi le même programme de radio et/ou de télévision sur la radio UKW-FM et/ou AM, et/ou que le second signal de commande est affecté à un système de radiodiffusion UKW-FM non compatible avec le système de radiodiffusion numérique.
  21. Signal de données numériques accompagnant un programme de radio, qui est divisé en au moins deux segments de données/informations, dans lequel:
    le premier segment (code PI-/AF) présente des premières données/informations de commande qui sont affectées à un premier système de radiodiffusion (UKW-FM/AM, PAL),
    le second segment (code DAB) présente des secondes données/informations de commande qui sont affectées à un second système de radiodiffusion (DAB, DSR, MAC) non compatible avec le premier, et
    le signal de données est transmis sur un canal de transmission (RDS) du premier et/ou du second système de radiodiffusion.
  22. Signal de commande selon la revendication 21, caractérisé en ce que le premier et/ou le second segment n'est alors contenu que dans le signal de données, même si le programme qui les accompagne est transmis dans le système de radiodiffusion auquel les premières et/ou secondes données/informations de commande sont affectées.
  23. Utilisation du signal de données selon la revendication 21 ou 22 pour la commande d'un récepteur radio.
EP92922255A 1991-11-01 1992-10-26 Systeme de radiodiffusion et recepteur de radiodiffusion Expired - Lifetime EP0610313B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4136068A DE4136068A1 (de) 1991-11-01 1991-11-01 Rundfunkuebertragungssystem und rundfunkempfaenger fuer ukw-fm und digitalen rundfunk (dab)
DE4136068 1991-11-01
DE4139264 1991-11-29
DE4139264 1991-11-29
PCT/EP1992/002448 WO1993009615A1 (fr) 1991-11-01 1992-10-26 Systeme de radiodiffusion et recepteur de radiodiffusion

Publications (2)

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EP0610313A1 EP0610313A1 (fr) 1994-08-17
EP0610313B1 true EP0610313B1 (fr) 1998-02-04

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US (1) US5584051A (fr)
EP (1) EP0610313B1 (fr)
JP (1) JP3520307B2 (fr)
KR (1) KR100255884B1 (fr)
CN (1) CN1052594C (fr)
AT (1) ATE163114T1 (fr)
AU (1) AU2892492A (fr)
DE (1) DE59209190D1 (fr)
ES (1) ES2113959T3 (fr)
TW (1) TW213525B (fr)
WO (1) WO1993009615A1 (fr)

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AU2892492A (en) 1993-06-07
WO1993009615A1 (fr) 1993-05-13
KR100255884B1 (ko) 2000-05-01
US5584051A (en) 1996-12-10
CN1072300A (zh) 1993-05-19
ES2113959T3 (es) 1998-05-16
JP3520307B2 (ja) 2004-04-19
EP0610313A1 (fr) 1994-08-17
DE59209190D1 (de) 1998-03-12
TW213525B (fr) 1993-09-21
CN1052594C (zh) 2000-05-17
ATE163114T1 (de) 1998-02-15

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