JP2013115797A - Traffic information receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traffic information receiving device which enables a user to receive traffic information in a language comprehensible for the user without performing a special operation.SOLUTION: A radio receiver comprises: a front end 12 for receiving a broadcast signal: a demodulation part 20; a broadcasting country specifying part 44 for determining countries which have broadcasted the broadcast signal on the basis of the broadcast signals having been received in past and specifying a broadcasting country in which the broadcast signal has been broadcasted with the highest frequency of broadcasts; an operation part 62 operated by a user to accept a reception instruction of traffic information which is multiplexed on the broadcast signal; and a traffic information selection part 48 for selectively receiving the traffic information which is broadcasted in the broadcasting country specified by the broadcasting country specifying part 44 when the user gives the reception instruction.

Description

  The present invention relates to a traffic information receiving apparatus that receives and outputs traffic information multiplexed on a broadcast signal.

  Conventionally, when a language is specified by the user and an announcement broadcast such as traffic information is generated, the language of the announcement broadcast is checked, and if the language matches the specified language, the announcement broadcast is interrupted. There is known a digital broadcast receiver that allows the above-mentioned (see, for example, Patent Document 1). This makes it possible to selectively receive announcement broadcasts in a language that the user can understand.

JP 2001-211091 A (page 3-5, FIG. 1-10)

  By the way, in the digital broadcast receiver disclosed in Patent Document 1, it is necessary for the user to specify a language in advance, and there is a problem that the operation becomes complicated. In addition, recently, the operation manual describing the operation method may become enormous due to the multi-functionality of the receiver and the fact that one in-vehicle device has the reception function and other functions. If an attempt is made to look for a place where a specific operation method such as language designation is described from the operation manual, the operation becomes very complicated. In addition, if the user does not know that the language has a function of selectively receiving the announcement broadcast of the specified language, this function cannot be used.

  The present invention was created in view of the above points, and an object of the present invention is to provide a traffic information receiving apparatus that can receive traffic information in a language that a user can understand without performing a special operation. It is to provide.

  In order to solve the above-described problem, the traffic information receiving apparatus of the present invention determines a country that broadcasts a broadcast signal, and a broadcast signal receiving unit that receives the broadcast signal, and the broadcast signal received in the past, Broadcast country identification means for identifying the most frequent broadcast country, operation means for receiving a traffic information reception instruction that is operated by a user and multiplexed on a broadcast signal, and when a reception instruction is given by the user And traffic information receiving means for selecting and receiving traffic information broadcasted in the broadcasting country specified by the broadcasting country specifying means.

  By identifying the most frequent broadcast country for broadcast signals received in the past, the country in which the user receives the broadcast most frequently, that is, the broadcast in the language used in the broadcast country By selecting traffic information that is broadcast in the same country as this broadcasting country, you can receive traffic information in a language that users can understand without performing any special operations. Is possible. In addition, it is easier to specify the broadcasting country than the process of identifying the traffic information language itself, and the traffic information process can be simplified.

  The broadcasting country specifying unit further includes a channel selection unit that switches the program corresponding to the broadcast signal described above, and the broadcast country specifying unit changes the broadcast country of the broadcast signal corresponding to the program each time the program is switched by the channel selection unit. It is desirable to update the frequency for each broadcasting country by increasing the cumulative number of broadcasts. By accumulating the broadcasting country every time the program is switched, it is possible to accurately know the broadcasting country having the highest frequency.

  In addition, the traffic information described above corresponds to information indicating the country where the traffic information is broadcast and information indicating whether the traffic information is currently being broadcast. It is desirable to select the traffic information broadcast in the broadcasting country specified by the broadcasting country specifying means from the information. Thereby, the traffic information in which broadcasting countries correspond can be selected reliably.

  The traffic information receiving means further includes a reception history storage means for storing the past reception history of the traffic information described above, and the traffic information receiving means receives the reception information stored in the reception history storage means when there are a plurality of traffic information to be selected. It is desirable to preferentially select traffic information that has been received in the past based on the history. Thus, by referring to the past reception history in addition to the match of the broadcasting countries, it is possible to reliably receive traffic information in a language that the user can understand.

  In addition, when the traffic information selected by the traffic information receiving means described above further includes an operation means for accepting a user switching instruction, the traffic information receiving means has a plurality of traffic information to be selected. Then, when a switching instruction is accepted by the operation means, it is desirable to switch the traffic information being received at that time to other traffic information included in the selection target. As a result, when multiple languages are used in one country, even if traffic information in a language that the user cannot understand is selected, the traffic information can be switched with a simple operation. It is possible to reduce time and effort required for a person to receive and output traffic information in an understandable language.

It is a figure which shows the structure of the radio receiver of one Embodiment. It is explanatory drawing of the basic baseband coding structure of RDS data. It is a flowchart which shows the operation | movement procedure which switches to traffic information during reception of normal FM broadcasts, such as a music program. It is a flowchart which shows the operation | movement procedure which switches traffic information by a user's instruction | indication.

  Hereinafter, a radio receiver according to an embodiment to which the traffic information receiving apparatus of the present invention is applied will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of a radio receiver according to an embodiment. The radio receiver shown in FIG. 1 is for receiving an RDS broadcast, and includes an antenna 10, a front end (F / E) 12, a demodulator 20, an amplifier 22, a speaker 24, an RS decoder 30, a controller 40, The reception history storage unit 50, the display unit 60, and the operation unit 62 are included.

  RDS broadcasting uses 57 kHz, which is the third harmonic of the 19 kHz stereo pilot signal, as a subcarrier, and the amplitude of the subcarrier is determined by a data signal indicating program-related information and traffic information related data that has been filtered and two-phase encoded. Radio data (RDS data) is modulated and the amplitude-modulated subcarrier is frequency-modulated to the main carrier and broadcast.

  FIG. 2 is an explanatory diagram of a basic baseband coding structure of RDS data. As shown in FIG. 2, the RDS data is composed of groups of 104 bits as one group, and each group is composed of 4 blocks (A, B, C, D), and each block is a 16-bit information word. (M0 to m15) and 10-bit check words and offset words (C′0 to C′9).

  In block A, program identification data (PI code: Program Identification Code) indicating a network including country name data and program data is arranged. In block B, traffic information broadcasting station identification data (TP code: Traffic program Identification code) indicating that it is a traffic information broadcasting station that broadcasts a traffic information program, and whether or not a broadcast program related to this traffic information is being broadcast Traffic announcement identification data (TA code: Traffic Announcement code) indicating that is arranged. In block C, data relating to the frequency of each station in the network station group that broadcasts the same program, that is, alternative station frequency data (AF data: Alternative Frequency code) is arranged. In the block D, broadcasting station name data (PS data: Program Service code) such as a broadcasting station name and a network name is arranged.

  Each group is divided into 16 types of types 0 to 15 according to the contents, and two versions (A and B) are defined corresponding to each type (0 to 15). The identification code is arranged in the block B.

  The front end 12 extracts a desired broadcast signal from broadcast signals received via the antenna 10 and performs frequency conversion to generate an IF signal (intermediate frequency signal) corresponding to the broadcast wave. The demodulator 20 performs FM demodulation processing and stereo demodulation processing based on the input IF signal. RDS data including predetermined message data is superimposed on the data after FM demodulation. The message data includes the following contents.

(1) Program identification code (PI)
(2) Traffic information broadcasting station identification data (TP code)
(3) Traffic announcement identification data (TA code)
The audio signal stereo-demodulated by the demodulator 20 is amplified by the amplifier 22 and output from the speaker 24.

  The RDS decoder 30 performs a predetermined decoding process on the data demodulated by the demodulator 20 and restores the RDS data. Further, the RDS decoder 30 performs an operation of detecting an error in the RDS data while maintaining block synchronization and correcting the error. Normally, RDS data error detection and correction operations are separate from the RDS data decoding process, and a separate error detection / correction unit is provided.

  The control unit 40 controls the entire radio receiver. For example, a tuning operation for selecting and receiving a program, an operation for selecting and receiving specific traffic information from receivable traffic information, and the like are performed under the control of the control unit 40. For this purpose, the control unit 40 includes a channel selection processing unit 42, a broadcasting country identification unit 44, a reception history storage processing unit 46, and a traffic information selection unit 48.

  When the received program is designated by the user using the operation unit 62, the channel selection processing unit 42 sets the reception frequency corresponding to the received program to the front end 12. The broadcast country specifying unit 44 determines the country in which the received program is broadcast based on the PI code included in the RDS data of the received program, and totals the broadcast countries of the programs received in the past to obtain the highest reception frequency. Identify high broadcast countries. The reception history storage processing unit 46 performs a process of totaling history information (program broadcast country history information) regarding broadcast countries of programs received in the past and history information (traffic information history information) of traffic information received in the past. The history information is stored in the reception history storage unit 50. Further, the broadcasting country specifying unit 44 described above specifies the broadcasting country having the highest frequency using the program broadcasting country history information. Specifically, every time a program switching is performed by the channel selection processing unit 42, if the broadcasting country of the program after the switching is determined by the broadcasting country specifying unit 44, the reception history storage processing unit 46 displays the program broadcasting country history. The cumulative number corresponding to the determined broadcasting country included in the information is increased by one. By performing these processes each time the program is switched, the cumulative number of broadcast countries increases, so the broadcast country identification unit 44 identifies the broadcast country having the largest cumulative number as the broadcast country with the highest reception frequency. can do.

  The traffic information selection unit 48 broadcasts in the broadcasting country (the broadcasting country with the highest reception frequency) specified by the broadcasting country specifying unit 44 when the user instructs to receive the traffic information using the operation unit 62. The selected traffic information is selected, and control (frequency switching or the like) necessary for receiving the selected traffic information is performed.

  When the display target data is included in the RDS data, the display unit 60 displays this data or displays channel selection information necessary for the control of the control unit 40. The operation unit 62 is for receiving instructions from the user, and includes various input keys and operation knobs.

  The antenna 10, front end 12, demodulator 20, amplifier 22, and speaker 24 described above are broadcast signal receiving means, the broadcasting country specifying unit 44 is broadcasting country specifying means, the operating unit 62 is operating means, and the traffic information selecting unit 48. Corresponds to the traffic information receiving means, the channel selection processing section 42 corresponds to the channel selection means, and the reception history storage section 50 corresponds to the reception history storage means.

  The radio receiver of this embodiment has such a configuration, and the operation thereof will be described next. FIG. 3 is a flowchart showing an operation procedure for switching to traffic information during reception of a normal FM broadcast such as a music program. When the reception operation of a music program or the like is started (step 100), the channel selection processing unit 42 determines whether there is a program switching instruction from the user (step 102). When the user gives a program switching instruction using the operation unit 62, an affirmative determination is made. Next, the channel selection processing unit 42 performs control for changing the received program in accordance with this instruction, and selects the program. Switching (step 104). The broadcast country specifying unit 44 determines the broadcast country of the program after switching (step 106), and the reception history storage processing unit 46 updates the program broadcast country history information stored in the reception history storage unit 50. Specifically, the cumulative number of times of the determined broadcasting country is increased by 1 (step 108). Thereafter, the process returns to step 100 to perform the program receiving operation after switching.

  If there is no program switching instruction, a negative determination is made in the determination in step 102. Next, the traffic information selection unit 48 determines whether or not an instruction to receive traffic information has been given by the user (step 110). If there is no traffic information reception instruction, a negative determination is made, and the process returns to step 100 to maintain the program reception operation.

  If a traffic information reception instruction is issued, an affirmative determination is made in the determination in step 110. Next, based on the program broadcast country history information stored in the reception history storage unit 50, the broadcast country identification unit 44 identifies the broadcast country with the highest reception frequency at that time (step 112). It is determined whether there is traffic information broadcast in the same broadcasting country as the broadcasting country (step 114). By using the RDS data, it is possible to identify the traffic information broadcasting station according to the TP code and to identify that the traffic information program is being performed according to the TA code. The determination in step 114 is performed on traffic information that is currently being broadcast and can be received. If the corresponding traffic information exists, an affirmative determination is made in the determination of step 114, and the traffic information selection unit 48 selects this traffic information and performs processing necessary for reception (step 116). When there are a plurality of traffic information broadcast in the same broadcasting country as the specified broadcasting country, one is selected from them. For example, based on the traffic information history information stored in the reception history storage unit 50, when preferentially selecting traffic information that has been received in the past, when receiving traffic information received most recently, etc. Can be considered. In addition, when there is no traffic information that has been received in the past, traffic information may be selected at random, or the traffic information with the best reception state may be selected by examining the reception state. Thereafter, the traffic information selection unit 48 determines whether or not the reception of traffic information has ended (step 118). If not, a negative determination is made, and the process returns to step 116 to maintain the traffic information receiving operation. Further, for example, when the user instructs to end the reception of traffic information using the operation unit 62, an affirmative determination is made in the determination of step 118. In this case, the process returns to step 100 to perform a normal program receiving operation.

  If there is no broadcast country that is broadcast in the same broadcast country as the specified broadcast country, a negative determination is made in the determination of step 114. In this case, the traffic information selection unit 48 displays a notification to that effect, for example, on the display unit 60 (step 120).

  As described above, in the radio receiver according to the present embodiment, by specifying a broadcasting country having the highest frequency for broadcast signals (programs) received in the past, the country in which the user receives the broadcast most frequently. In other words, since it is possible to know in which broadcast country the broadcast in the language used is received, a special operation is performed by selecting traffic information broadcast in the same country as this broadcast country. It is possible to receive traffic information in a language that the user can understand without any problem. In addition, it is easier to specify the broadcasting country than the process of identifying the traffic information language itself, and the traffic information process can be simplified.

  In addition, every time a program is switched, the frequency of each broadcast country is updated by increasing the cumulative number of broadcast countries corresponding to this program, so that the most frequently broadcast country can be known accurately. Can do.

  In addition, the traffic information described above corresponds to information (TP code, PI code) indicating the country where the traffic information is broadcast and information (TA code) indicating whether the traffic information is currently being broadcast. The traffic information selection unit 48 selects traffic information broadcast in the broadcasting country specified by the broadcasting country specifying unit 44 from the traffic information currently being broadcast. Thereby, the traffic information in which broadcasting countries correspond can be selected reliably.

  In addition, the past reception history of traffic information (traffic information history information) is stored, and based on this reception history, the user can preferentially select the traffic information that has been received in the past, so that the user can Traffic information in an understandable language can be reliably received.

  By the way, in the above-mentioned embodiment, since traffic information is received focusing on the broadcasting country, traffic in a language that the user does not want to receive when traffic information in multiple languages is broadcast in one country. Information can be received. In such a case, it is desirable to be able to switch to other traffic information broadcast in the same country with a simple operation by the user.

  FIG. 4 is a flowchart showing an operation procedure for switching traffic information according to a user instruction. The flowchart shown in FIG. 4 is different from the flowchart shown in FIG. 3 in that the operations of Step 200 and Step 202 are added between Step 116 and Step 118. Hereinafter, the description will be given focusing on these added steps.

  After reception of traffic information is started (step 116), the traffic information selection unit 48 determines whether or not the user has instructed switching of traffic information using the operation unit 62 (step 200). If no switching instruction is given, a negative determination is made, and the process proceeds to step 118 to determine whether traffic information has been received. In addition, when the traffic information switching instruction is given by the user, an affirmative determination is made in the determination of step 200. Next, the traffic information selection unit 48 switches to other traffic information broadcast in the same broadcasting country as the broadcasting country with the highest reception frequency (step 202), and then returns to step 116 to receive traffic information. Is done.

  In this way, by switching to other traffic information broadcast in the same broadcasting country, traffic information in a language that the user cannot understand is selected when using multiple languages in one country. Even in such a case, the traffic information can be switched by a simple operation, and the time required for receiving and outputting the traffic information in a language understandable by the user can be reduced.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the radio receiver that receives RDS broadcasting has been described. However, the present invention can also be applied to other radio receivers such as a DBA (Digital Audio Broadcasting) receiver.

  As described above, according to the present invention, by specifying a broadcasting country having the highest frequency for broadcast signals received in the past, which country the user receives the most frequently, that is, which broadcasting Since it is possible to know whether the broadcast of the language used in the country is received, the user can select the traffic information broadcast in the same country as the broadcast country without performing any special operation. It is possible to receive traffic information in an understandable language.

10 Antenna 12 Front end (F / E)
DESCRIPTION OF SYMBOLS 20 Demodulation part 30 RS decoder 40 Control part 42 Channel selection process part 44 Broadcasting country specific part 46 Reception history storage process part 48 Traffic information selection part 50 Reception history storage part 60 Display part 62 Operation part

Claims (5)

Broadcast signal receiving means for receiving a broadcast signal;
About the broadcast signal received in the past, a country that broadcasts the broadcast signal is determined, a broadcast country specifying means for specifying the most frequent broadcast country,
An operation means that is operated by a user and receives an instruction to receive traffic information multiplexed on the broadcast signal;
Traffic information receiving means for selecting and receiving traffic information broadcast in the broadcasting country specified by the broadcasting country specifying means when the reception instruction is made by the user;
A traffic information receiving apparatus comprising: In claim 1,
It further comprises channel selection means for switching the program corresponding to the broadcast signal,
The broadcasting country specifying means updates the frequency for each broadcasting country by increasing the cumulative number of broadcasting countries corresponding to the program every time the program is switched by the channel selection means. A featured traffic information receiver. In claim 1 or 2,
The traffic information corresponds to information indicating the country where the traffic information is broadcast and information indicating whether the traffic information is currently being broadcast.
The traffic information receiving means selects the traffic information broadcast in the broadcasting country specified by the broadcasting country specifying means from the traffic information currently being broadcast. In claim 3,
A reception history storage means for storing a past reception history of the traffic information;
The traffic information receiving means gives priority to the traffic information that has been received in the past based on the reception history stored in the reception history storage means when there are a plurality of the traffic information to be selected. A traffic information receiving apparatus characterized by selecting. In claim 3,
The operation means accepts a switching instruction of a user for the traffic information selected and received by the traffic information receiving means,
When the traffic information receiving means includes a plurality of the traffic information to be selected and the switching instruction is received by the operation means, the traffic information currently being received is selected as the selection target. A traffic information receiving apparatus characterized by switching to other traffic information included.

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