EP2627017A1 - Récepteur radio pour éviter de mettre à jour des listes de fréquence stockées dans des tunnels. - Google Patents

Récepteur radio pour éviter de mettre à jour des listes de fréquence stockées dans des tunnels. Download PDF

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Publication number
EP2627017A1
EP2627017A1 EP13153048.7A EP13153048A EP2627017A1 EP 2627017 A1 EP2627017 A1 EP 2627017A1 EP 13153048 A EP13153048 A EP 13153048A EP 2627017 A1 EP2627017 A1 EP 2627017A1
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EP
European Patent Office
Prior art keywords
broadcasting
broadcasting station
radio receiver
station list
broadcasting signal
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.)
Granted
Application number
EP13153048.7A
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German (de)
English (en)
Other versions
EP2627017B1 (fr
Inventor
Shizuto Arita
Tomoya Hamaguchi
Takanobu NAGASHIMA
Satoru Nagayama
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Alpine Electronics Inc
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Alpine Electronics Inc
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Filing date
Publication date
Application filed by Alpine Electronics Inc filed Critical Alpine Electronics Inc
Publication of EP2627017A1 publication Critical patent/EP2627017A1/fr
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Publication of EP2627017B1 publication Critical patent/EP2627017B1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
    • 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
    • H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
    • 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]

Definitions

  • the present invention relates to a radio receiver such as a radio data system (RDS).
  • RDS radio data system
  • Receivers that create a list of receivable broadcasting stations have been known (for example, JP 2010-268333 A ).
  • a movable body in which a receiver is mounted determines, with the use of a position detector such as a global positioning system (GPS), whether or not the movable body has entered an area where reception is difficult, such as an underground facility.
  • GPS global positioning system
  • the broadcasting station list is not updated. Accordingly, a situation in which the number of broadcasting stations registered in the broadcasting station list is reduced when the movable body enters the area where reception is difficult can be avoided.
  • Receivers that automatically update preset contents have also been known (for example, see JP 6 334 490 A ).
  • the receivers update the preset contents by replacing the preset plurality of broadcasting stations with broadcasting stations whose reception levels are equal to or greater than the reference value.
  • a second configuration which is provided for searching for a broadcasting station and is arranged separately from a first configuration provided for listening to broadcasts, such receivers detect the reception levels of the plurality of preset broadcasting stations.
  • the preset contents are not updated. Accordingly, updating of the preset contents is avoided in the case of entry to a tunnel or the like.
  • a radio receiver includes a broadcasting signal receiving unit that receives a broadcasting signal; a sound output unit that outputs sound corresponding to the broadcasting signal; a broadcasting station list creating unit that creates a broadcasting station list representing broadcasting signals receivable by the broadcasting signal receiving unit; an entry determining unit that determines, on the basis of a reception state of the broadcasting signal, whether or not the radio receiver has entered an area where it is difficult to receive the broadcasting signal; an exit determining unit that determines, on the basis of the reception state of the broadcasting signal, whether or not the radio receiver has exited from the area where it is difficult to receive the broadcasting signal; a list holding unit that holds contents of the broadcasting station list when the entry determining unit determines that the radio receiver has entered the area where it is difficult to receive the broadcasting signal; an operating unit that receives a frequency sweeping instruction by a user; a frequency sweep processing unit that sweeps a receive frequency of the broadcasting signal receiving unit in one direction when the
  • the list holding determining unit determines that the contents of the broadcasting station list should continue to be held when the exit determining unit determines that the radio receiver has not exited from the area where it is difficult to receive the broadcasting signal, and determines that holding of the contents of the broadcasting station list should be ceased when the exit determining unit determines that the radio receiver has exited from the area where it is difficult to receive the broadcasting signal.
  • the broadcasting signal receiving unit has a single-tuner configuration that receives one broadcasting signal.
  • the area where it is difficult to receive the broadcasting signal is an area inside a tunnel or inside a building.
  • the reception states of individual broadcasting signals are detected when a frequency sweep operation is performed in accordance with an instruction by a user, the individual broadcasting signals can be examined without affecting a normal operation for receiving a broadcasting signal (sound output).
  • a simpler configuration can be achieved.
  • a determination as to whether the contents of a broadcasting station list should continue to be held or holding of the contents of the broadcasting station list should be ceased is performed in accordance with whether or not the radio receiver has exited from a tunnel or the like, updating of the contents of the broadcasting station list during traveling inside the tunnel or the like can be avoided.
  • the list holding determining unit determines that the contents of the broadcasting station list should continue to be held or that holding of the contents of the broadcasting station list should be ceased before the frequency sweep processing unit starts the frequency sweeping or after the frequency sweep processing unit ends the frequency sweeping.
  • the determination as to whether the contents of the broadcasting station list should continue to be held or that holding of the contents of the broadcasting station list should be ceased can be made without giving an unnatural feeling to a user.
  • the exit determining unit detects reception states of the broadcasting signals in the broadcasting station list. Alternatively, preferably, the exit determining unit detects reception states of all the broadcasting signals within a receive frequency band. Since the number of receivable broadcasting signals is reduced when the radio receiver enters a tunnel or a building, detection of entry to the tunnel or the building can be ensured on the basis of a detection result regarding the reception state.
  • the mute processing unit keeps the output in the non-sound state during the operation of the list holding determining unit.
  • the determination as to whether the contents of a broadcasting station list should continue to be held or holding of the contents of the broadcasting station list should be ceased can be performed using a non-sound state at the time of the frequency sweep operation, and a situation in which an unnatural feeling is given to a user can be avoided.
  • the radio receiver further includes a tuning processing unit that instructs the broadcasting signal receiving unit to perform switching of a broadcasting signal; and a broadcasting station list updating unit that updates the contents of the broadcasting station list on the basis of a reception state of the broadcasting signal switched by the tuning processing unit.
  • the broadcasting station list updating unit holds the contents of the broadcasting station list, irrespective of the reception state of the broadcasting signal, when the list holding determining unit determines that the contents of the broadcasting station list should continue to be held.
  • the tuning processing unit issues an instruction to perform switching to a broadcasting signal in the broadcasting station list.
  • the reception state of the broadcasting signal of the broadcasting station tuned in is bad, if the reason for the bad reception state is entry to a tunnel or the like, the contents of the broadcasting station list can be maintained. Accordingly, a situation in which the contents of the broadcasting station list are updated because of the temporary deterioration in the reception station can be avoided.
  • the entry determining unit determines, on the basis of a reception state of a broadcasting signal being received by the broadcasting signal receiving unit, whether or not the radio receiver has entered the area where it is difficult to receive the broadcasting signal. Unlike the case where the radio receiver moves away from a receivable area, the reception state of a broadcasting signal suddenly changes (deteriorates) when the radio receiver enters a tunnel. Thus, by examining the reception state, detection of entry to a tunnel or a building can be ensured.
  • Fig. 1 illustrates the configuration of a radio receiver according to an embodiment of the present invention.
  • the radio receiver illustrated in Fig. 1 is mounted in a vehicle and receives RDS broadcasts.
  • the radio receiver includes an antenna 10, a front end (F/E) 12, an intermediate frequency amplifier (IFA) 14, an S meter (signal meter) 16, a demodulator 20, an amplifier 22, a speaker 24, an RDS decoder 30, a controller 40, a broadcasting station list storing unit 50, a display unit 60, and an operation unit 62.
  • the radio receiver has a single-tuner configuration that receives one broadcasting signal.
  • Radio data system is a communications protocol standard, e.g. defined in IEC RDS standard version IEC 62106, for embedding small amounts of digital information in conventional FM radio broadcast signals.
  • Radio Broadcast Data System defined in NRSC-4-B, "United States RBDS Standard -- Specification of the Radio Broadcast Data System (RBDS)", is the official name used for the U.S. version of RDS; the two standards are only slightly different and the NRSC-4-B standard includes only those sections that differ from the European version of the Standard, IEC 62106, Specification of the Radio Data System (RDS) for VHF/FM sound broadcasting in the frequency range from 87.5 to 108.0MHz.
  • the amplitude of a subcarrier at 57 kHz which is a third harmonic of a stereo pilot signal at 19 kHz, is modulated using a data signal representing data, such as filtered and two-phase coded program related information and traffic information, to obtain radio data (RDS data), and the amplitude-modulated subcarrier is frequency-modulated into a main carrier and is broadcasted.
  • a data signal representing data such as filtered and two-phase coded program related information and traffic information
  • Fig. 2 is an explanatory diagram of the basic baseband coding configuration of RDS data.
  • RDS data is configured in units of groups each including 104 bits.
  • Each group includes four blocks (A, B, C, and D).
  • One block includes an information word (m0 to m15) of 16 bits and a test word and an offset word (C'0 to C'9) of 10 bits.
  • program identification data representing a network including country name data and program data
  • program identification code program identification code (PI code)
  • program identification code program identification code
  • TP code traffic program identification code
  • PTY code program contents identification data
  • PS code broadcasting station name data
  • PS code program service code
  • the front end 12 extracts a desired broadcasting signal from among broadcasting signals received via the antenna 10, and performs frequency conversion to generate an intermediate frequency signal (IF signal) corresponding to the broadcasting wave.
  • the intermediate frequency amplifier 14 amplifies the IF signal output from the front end 12.
  • the S meter 16 detects the signal intensity of the IF signal output from the intermediate frequency amplifier 14, that is, the field intensity of the broadcasting signal received by the front end 12.
  • the demodulator 20 performs FM demodulation processing and stereo demodulation processing on the basis of the IF signal input from the intermediate frequency amplifier 14.
  • RDS data including program identification data (PI code) and program contents identification data (PTY code) is superimposed on FM-demodulated data.
  • An audio signal that is stereo-demodulated by the demodulator 20 is amplified by the amplifier 22, and audio sound is output from the speaker 24.
  • the RDS decoder 30 performs specific decoding processing for the data that is FM-demodulated by the demodulator 20 to restore RDS data.
  • the RDS decoder 30 also performs an operation for detecting an error of the RDS data while achieving block synchronization and for correcting the error. Normally, the operation for error detection and error correction of RDS data is performed independently of decoding processing for RDS data, and a unit for detecting and correcting an error is provided separately.
  • the controller 40 controls the entire radio receiver.
  • the controller 40 includes a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), and the like and performs various operations by executing a specific program. For example, a tuning operation for selecting a program and receiving the program, a seek operation for performing frequency sweeping in one direction to search for a receivable broadcasting signal, an operation for creating a broadcasting station list representing receivable broadcasting signals, and the like are performed under the control of the controller 40.
  • CPU central processing unit
  • RAM random access memory
  • ROM read only memory
  • the controller 40 includes a tuning processing unit 41, a broadcasting station list creating unit 42, an entry determining unit 43, an exit determining unit 44, a list holding unit 45, a seek processing unit 46, a mute processing unit 47, a list holding determining unit 48, and a broadcasting station list updating unit 49.
  • the tuning processing unit 41 When a tuning instruction (instruction to perform switching of a program to be received) is issued using the operation unit 62 by a user, the tuning processing unit 41 performs, for the front end 12, setting of a receive frequency corresponding to a program to be received after switching.
  • the broadcasting station list creating unit 42 creates a broadcasting station list representing receivable broadcasting signals.
  • the broadcasting station list includes at least program identification data (PI code) and receive frequencies corresponding to broadcasting signals of individual broadcasting stations.
  • the broadcasting station list may be created at various times. For example, the broadcasting station list may be created at the time when a user issues an instruction using the operation unit 62, at the time when the radio receiver is activated, or at specific time intervals.
  • the created broadcasting station list is stored in the broadcasting station list storing unit 50, which is a semiconductor memory, a hard disk device, or the like.
  • the entry determining unit 43 determines, on the basis of the reception state of a broadcasting signal, whether or not the vehicle has entered an area where it is difficult to receive the broadcasting signal. Specifically, the entry determining unit 43 determines, on the basis of the degree of a change in the reception state of a broadcasting signal being received (output level of the S meter 16), whether or not the vehicle has entered the area where it is difficult to receive the broadcasting signal.
  • output level of the S meter 16 When a traveling vehicle moves away from a reception area of a broadcasting station, the output level of the S meter 16 gradually declines. However, when the vehicle enters a tunnel or a car park inside a building, the output level of the S meter 16 suddenly declines. Thus, when the rate of decline in the output level of the S meter 16 reaches a specific reference value or more, it is determined that the vehicle has entered a tunnel or the like.
  • the exit determining unit 44 determines, on the basis of the reception state of a broadcasting signal, whether or not the vehicle has exited from the area where it is difficult to receive the broadcasting signal.
  • the "area where it is difficult to receive a broadcasting signal" which is used for the determinations performed by the exit determining unit 44 and the entry determining unit 43, is assumed to be an area inside a tunnel or inside a building.
  • the exit determining unit 44 determines, on the basis of the reception states of individual broadcasting signals included in a broadcasting station list (output level of the S meter 16), whether or not the vehicle has entered the area where it is difficult to receive the broadcasting signals.
  • the list holding unit 45 holds the contents of the broadcasting station list stored in the broadcasting station list storing unit 50.
  • a frequency sweeping instruction (seek instruction) is issued using the operation unit 62 by a user
  • the seek processing unit 46 sweeps a receive frequency of the front end 12 in one direction.
  • the output level of the S meter 16 reaches a specific value or more and a broadcasting signal is detected
  • the seek processing unit 46 stop the sweeping of the receive frequency.
  • the mute processing unit 47 issues an instruction to the demodulator 20, and causes audio sound output from the speaker 24 to enter a non-sound state.
  • the list holding determining unit 48 determines that the list holding unit 45 should continue to hold the broadcasting station list. In the other case (in the case where it is determined that the vehicle has exited from a tunnel or the like), the list holding determining unit 48 determines that list holding unit 45 should cease holding the broadcasting station list.
  • the broadcasting station list updating unit 49 detects the reception state of a received broadcasting signal (output level of the S meter 16) in a tuning operation or the like using a broadcasting station list, and updates the contents of the broadcasting station list stored in the broadcasting station list storing unit 50, on the basis of the result of the detection.
  • the display unit 60 displays the data, and displays tuning information, the contents of a broadcasting station list, and the like necessary for control by the controller 40.
  • the operation unit 62 receives instructions from a user.
  • the operation unit 62 includes various input keys, operation tabs, and the like.
  • the antenna 10 and the front end 12 correspond to broadcasting signal receiving means
  • the intermediate frequency amplifier 14, the demodulator 20, the amplifier 22, and the speaker 24 correspond to sound output means
  • the broadcasting station list creating unit 42 corresponds to broadcasting station list creating means
  • the entry determining unit 43 corresponds to entry determining means
  • the exit determining unit 44 corresponds to exit determining means
  • the list holding unit 45 corresponds to list holding means
  • the operation unit 62 corresponds to operating means
  • the seek processing unit 46 corresponds to frequency sweep processing means
  • the mute processing unit 47 corresponds to mute processing means
  • the list holding determining unit 48 corresponds to list holding determining means
  • the tuning processing unit 41 corresponds to tuning processing means
  • the broadcasting station list updating unit 49 corresponds to broadcasting station list updating means.
  • Fig. 3 is a flowchart illustrating a process for performing switching of the holding state of the contents of a created broadcasting station list in accordance with whether or not the vehicle has exited from a tunnel or the like.
  • a tunnel and an area inside a building are referred to as a "tunnel”.
  • the entry determining unit 43 determines whether or not the vehicle has entered a tunnel (step 102). When the vehicle has not entered a tunnel, a negative determination is made and the determination in step 102 is repeated. When the vehicle has entered a tunnel, an affirmative determination is made in step 102. Then, the seek processing unit 46 determines whether or not a seek instruction has been issued by a user (step 106). When a seek instruction has not been issued, a negative determination is made, and the determination in step 106 is repeated.
  • step 106 When a seek instruction has been issued by a user, an affirmative determination is made in step 106. Then, the mute processing unit 47 issues a mute instruction to the demodulator 20, and causes audio sound output from the speaker 24 to enter a non-sound state (step 108). The seek processing unit 46 issues an instruction to the front end 12, and starts a seek operation for sweeping a frequency in one direction from the current receive frequency (step 110).
  • the seek processing unit 46 monitors the output level of the S meter 16, and determines whether or not a broadcasting signal whose reception state is good (output level is equal to or greater than a specific value) exists (step 112). When no broadcasting signal is detected, a negative determination is made. Then, the seek processing unit 46 determines whether or not all the frequencies have been swept through (for example, when a swept frequency reaches the upper limit (or lower limit) of a reception band, the frequency is switched to the lower limit (or upper limit) to continue frequency sweeping) (step 114). A negative determination is made and the process returns to step 112 to perform the determination as to whether or not all the frequencies have been swept through until all the frequencies have been swept through.
  • step 112 When the affirmative determination is made in step 112 or after all the frequencies have been swept through and an affirmative determination is made in step 114, the seek processing unit 46 terminates the seek operation (step 116). In this state, a broadcasting signal corresponding to a new receive frequency after the seek operation is performed (the same receive frequency as that before the seek operation is performed in the case where all the frequencies have been swept through) is received, and corresponding audio sound is output.
  • the exit determining unit 44 detects the reception states of individual broadcasting signals of a plurality of broadcasting stations in the broadcasting station list (output level of the S meter 16) in a specific order (for example, in a registered order in the broadcasting station list or in ascending or descending order of receive frequencies) (step 118).
  • the exit determining unit 44 also determines whether or not the vehicle has exited from the tunnel (step 120). When the vehicle is traveling inside the tunnel and has not exited from the tunnel, a negative determination is made. Then, the list holding determining unit 48 determines that the broadcasting station list should continue to be held (step 122). Meanwhile, when the vehicle has exited from the tunnel, an affirmative determination is made in step 120. Then, the list holding determining unit 48 determines that holding of the broadcasting station list should be ceased (step 124).
  • step 126 a broadcasting signal detected in step 112 or the original broadcasting signal at the time of start of the seek operation when it is determined in step 114 that all the frequencies have been swept through starts to be received (step 126), and the mute processing unit 47 terminates the mute processing (step 128). Then, the process returns to step 106 to repeat the determination as to whether or not a seek instruction has been issued.
  • step 122 In the case where it is determined in step 122 that the broadcasting station list should continue to be held, when a tuning instruction for performing switching to a broadcasting station in the broadcasting station list is issued after the determination in step 122 is made and switching to a broadcasting signal of the broadcasting station is actually performed, even if the reception state of the broadcasting signal is bad, the contents of the broadcasting station list are maintained without deleting the broadcasting station from the broadcasting station list.
  • step 124 In the case where it is determined in step 124 that holding of the broadcasting station list should be ceased, when a tuning instruction for performing switching to a broadcasting station in the broadcasting station list is issued after the determination in step 124 is made and switching to a broadcasting signal of the broadcasting station is actually performed, if the reception state of the broadcasting signal is bad, the contents of the broadcasting station list are updated by deleting the broadcasting station from the broadcasting station list.
  • Fig. 4 is a flowchart illustrating the process of a tuning operation which reflects the result of a determination as to whether or not the broadcasting station list should be held.
  • the tuning processing unit 41 determines whether or not a tuning instruction has been issued (step 202). When a tuning instruction is not issued, a negative determination is made. Then, the process returns to step 200 and the current broadcasting signal continues to be received.
  • a tuning instruction is issued, an affirmative determination is made in step 202.
  • the tuning processing unit 41 performs switching of a broadcasting station (broadcasting signal) (step 204). Specifically, the tuning instruction is issued by selecting a broadcasting station registered in the broadcasting station list.
  • the tuning processing unit 41 performs switching of a broadcasting signal by performing setting of a receive frequency corresponding to the selected broadcasting station (broadcasting signal) for the front end 12.
  • the broadcasting station list updating unit 49 detects the reception state of the broadcasting signal after switching is performed (output level of the S meter 16), and determines whether or not the detected reception state is good (step 206). When the reception state is good, an affirmative determination is made. Then, the process returns to step 200 and the broadcasting signal after switching is performed continues to be received.
  • step 206 When the reception state is bad, a negative determination is made in step 206. Then, the broadcasting station list updating unit 49 determines whether or not the list holding determining unit 48 has determined that the broadcasting station list should continue to be held (step 208). When the determination that the broadcasting station list should continue to be held is made in step 122 of Fig. 3 , an affirmative determination is made. Then, the process returns to step 200 and the broadcasting signal after switching is performed continues to be received. Meanwhile, when the determination that holding of the broadcasting station list should be ceased is made in step 124 of Fig. 3 , a negative determination is made in step 208.
  • the broadcasting station list updating unit 49 deletes the broadcasting signal (broadcasting station) in the bad reception state after switching is performed from the broadcasting station list (step 210). Then, the process returns to step 200 to continue to receive a broadcasting signal. Since the reception state of the broadcasting signal is bad, a tuning instruction or the like for performing switching to a different broadcasting station is normally issued.
  • Fig. 5 is an explanatory diagram of a tuning operation performed in the case where the vehicle enters a tunnel while being traveling and a broadcasting station list continues to be held.
  • the broadcasting station list includes three broadcasting stations, that is, a station A, a station B, and a station C. Apart from the stations A, B, and C, a broadcasting station for broadcasting inside a tunnel, which is separately represented as station D, exists.
  • step 104 of Fig. 3 the contents of a broadcasting station list created and stored in advance in the broadcasting station list storing unit 50 are held. Then, when a seek operation is performed and the broadcasting station D for broadcasting inside a tunnel is detected, a determination as to whether or not the vehicle has exited from the tunnel is performed (step 120 of Fig. 3 ). When the vehicle has not exited from the tunnel, the determination that the broadcasting station list should continue to be held is made (step 122).
  • a tuning operation for each of the broadcasting stations A, B, and C in the broadcasting station list is performed (since the vehicle is located inside the tunnel, the reception states of broadcasting signals of the broadcasting stations A, B, C are bad). Since the determination that the broadcasting station list should continue to be held is made, the broadcasting stations A, B, C are not deleted from the broadcasting station list. Accordingly, the contents of the broadcasting station list are held.
  • tuning for each of the broadcasting stations A, B, and C is performed. If the reception state of a broadcasting signal for a broadcasting station is bad, the broadcasting station is deleted from the broadcasting station list.
  • the radio receiver since the radio receiver according to this embodiment detects the reception states of individual broadcasting signals when a seek operation is performed in accordance with an instruction by a user, the details of the individual broadcasting signals can be examined without affecting a normal operation for receiving a broadcasting signal (audio sound output). In addition, there is no need to add a different configuration for detecting a reception state and to use a navigation system or the like. Thus, a simpler configuration can be achieved.
  • the determination as to whether the contents of a broadcasting station list should continue to be held or that holding of the contents of the broadcasting station list should be ceased can be performed without giving an unnatural feeling to a user.
  • detecting the reception state of a broadcasting signal in a broadcasting station list and determining whether or not the vehicle has exited from an area such as a tunnel where it is difficult to receive the broadcasting signal detection of exit from a tunnel or building can be ensured. Furthermore, by determining whether the contents of a broadcasting station list should continue to be held or holding of the contents of the broadcasting station list should be ceased by using a non-sound state (mute state) at the time of a seek operation, a situation in which an unnatural feeling is given to a user can be avoided.
  • mute state non-sound state
  • reception states of broadcasting signals of broadcasting stations in a broadcasting station list are detected in step 118 of Fig. 3 in the embodiment described above, the reception states of all the broadcasting signals within a receive frequency band may be detected.
  • reception state of a broadcasting signal is detected after a seek operation finishes and the determination that the contents of a broadcasting station list should continue to be held or that holding of the contents of the broadcasting station list should be ceased is made (steps 120, 122, and 124 of Fig. 3 ) in the embodiment described above, these operations may be performed before the seek operation starts (between step 108 and step 110 of Fig. 3 ).
  • radio receiver that receives RDS broadcasts has been explained in the embodiment described above, the present invention may also be applied to various radio receivers, such as digital audio broadcasting (DAB) receivers, AM receivers, and FM receivers.
  • DAB digital audio broadcasting
  • a radio receiver since a radio receiver according to an embodiment of the present invention detects the reception states of individual broadcasting signals when a frequency sweep operation is performed in accordance with an instruction by a user, the details of the individual broadcasting signals can be examined without affecting a normal operation for receiving a broadcasting signal (sound output). In addition, there is no need to add a different configuration for detecting a reception state and to use a navigation system or the like. Thus, a simpler configuration can be achieved.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
EP13153048.7A 2012-02-07 2013-01-29 Récepteur radio pour éviter de mettre à jour des listes de fréquence stockées dans des tunnels. Active EP2627017B1 (fr)

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Application Number Priority Date Filing Date Title
JP2012023887A JP5808035B2 (ja) 2012-02-07 2012-02-07 ラジオ受信機

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EP2627017A1 true EP2627017A1 (fr) 2013-08-14
EP2627017B1 EP2627017B1 (fr) 2019-12-04

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938268C1 (fr) * 1989-11-17 1991-01-31 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De
JPH06334490A (ja) 1993-05-24 1994-12-02 Fujitsu Ten Ltd 受信装置
DE19531527A1 (de) * 1995-08-26 1997-02-27 Grundig Emv Verfahren und Schaltungsanordnung zum Programmwechsel bei kurzzeitigem Signalausfall
EP2073391A1 (fr) * 2007-12-21 2009-06-24 Fujitsu Ten Limited Procédé de fonctionnement syntoniseur pour détecter et répondre aux effets des situations de tunnel sur la réception radio par un récepteur radio embarqué
US20100197255A1 (en) * 2009-02-05 2010-08-05 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Method and apparatus for dynamic station preset configuration in a radio
JP2010268333A (ja) 2009-05-18 2010-11-25 Clarion Co Ltd 受信装置、及び、受信制御方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6439124A (en) * 1987-08-03 1989-02-09 Mazda Motor Radio receiver for vehicle
JP2745825B2 (ja) * 1991-01-10 1998-04-28 三菱電機株式会社 Ｒｄｓ受信機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938268C1 (fr) * 1989-11-17 1991-01-31 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De
JPH06334490A (ja) 1993-05-24 1994-12-02 Fujitsu Ten Ltd 受信装置
DE19531527A1 (de) * 1995-08-26 1997-02-27 Grundig Emv Verfahren und Schaltungsanordnung zum Programmwechsel bei kurzzeitigem Signalausfall
EP2073391A1 (fr) * 2007-12-21 2009-06-24 Fujitsu Ten Limited Procédé de fonctionnement syntoniseur pour détecter et répondre aux effets des situations de tunnel sur la réception radio par un récepteur radio embarqué
US20100197255A1 (en) * 2009-02-05 2010-08-05 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Method and apparatus for dynamic station preset configuration in a radio
JP2010268333A (ja) 2009-05-18 2010-11-25 Clarion Co Ltd 受信装置、及び、受信制御方法

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JP2013162383A (ja) 2013-08-19
EP2627017B1 (fr) 2019-12-04

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