JP3108214B2 - Traffic information receiving method in RDS tuner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to EON information (Enhanced Other Networks Information) in an RDS tuner.
The present invention relates to a method for receiving traffic information using the Internet.

[0002]

2. Description of the Related Art RDS (Radio Data System) is an international radio communication advisory committee (CCI).
This is an FM multiplex broadcasting system recommended in R), and provides various services mainly for car radios, such as displaying the name of a broadcasting station, automatically selecting a station, and automatically receiving traffic information.

[0003] In the conventional automatic reception of traffic information in the RDS tuner, a traffic program code TP of the 0A group, which is the own network information in the RDS data, and a traffic announcement code TA indicating that the traffic information is currently being broadcast.
I was going to use.

That is, for example, now the car stereo is C
While playing D or cassette tape,
The tuner is set to the receiving state of a certain FM station, and 0A in the RDS data sent from the set station is set.
Monitor group data at all times. Then, when the traffic program code TP = 1 and the traffic announcement code TA = 1 in the 0A group are detected, it is determined that the broadcast of the traffic information has started at the receiving station, and the reproduction source is a CD or a cassette tape. , And automatically switched to the RDS tuner side, and as shown in FIG. 5, the volume was raised from the normal level and the speaker was sounding while calling attention.

[0005]

In the conventional automatic reception of traffic information, only the traffic information of the receiving station preset in the RDS tuner and its affiliated stations, that is, the traffic information of its own network station, can be received. . For this reason, when a traffic information program is not broadcast on the own network, there is a problem that the traffic information cannot be heard forever.

The present invention has been made in view of the above circumstances, and uses newly established EON information as RDS data so that traffic information of another network station can be automatically received, and the traffic information of another network station can be automatically received. It is an object of the present invention to provide a traffic information receiving method of an RDS tuner that informs a driver of traffic information.

[0007]

In order to achieve the above object, according to the present invention, the R including the EON information is used.
An RDS tuner capable of receiving a DS broadcast wave includes a system controller for detecting the start of traffic information of another network based on the EON information and controlling the reproduction of the traffic information. When playing back, the volume of the traffic information output from the speaker is that of the own network.
Or a network of another network . To achieve the above object, according to the invention of claim 2,
In an RDS tuner capable of receiving an RDS broadcast wave including EON information and having a display,
A system controller for detecting the start of traffic information of the other network based on the N information and controlling the reproduction of the traffic information, wherein the system controller displays the display color of the display when reproducing the traffic information of the other network. Own
Network or another network
The control is performed so as to be changed so as to be distinguishable . In order to achieve the above object, according to the third aspect of the present invention, an RDS tuner including an EON information can be received, and an RDS tuner provided with a display device, based on the EON information, receives an RDS broadcast wave from another network. A system controller that detects the start of traffic information and controls the reproduction of the traffic information. When the system controller reproduces the traffic information of the other network, whether the display on the display is that of the own network or not. Other networks
It is controlled so that it blinks so that it can be identified as a lock. To achieve the above objective,
According to the invention described in claim 4, RDS including EON information
In the RDS tuner capable of receiving broadcast waves, the EO
A system controller for detecting the start of traffic information of the other network based on the N information and controlling the reproduction of the traffic information, wherein the system controller outputs the speaker output when reproducing the traffic information of the other network. der those frequency characteristic of the traffic information of its own network
Or a network of another network .

[0008]

[Operation] The RDS data contains undefined groups from 0 to 0.
It consists of 16 types of groups up to 15 groups. Recently, among the undefined groups of the RDS data, the 14A and 14B groups are newly established as EON information in a format as shown in FIG. 4, so that not only the own network information but also other network information can be transmitted. Was. The present invention is based on this newly enacted 1
Using the EON information consisting of 4A and 14B groups, while automatically receiving traffic information of other network stations,
This is to inform the driver that it is traffic information of another network station.

First, the data content of the EON information shown in FIG. 4 will be described. In FIG. 4, (T
N) indicates a code for the own network TN (This Network), and (ON) indicates a code for another network ON (Other Network).

In the 14A group shown in FIG. 4A, the first block is provided with a program identification code PI (TN) of its own network. This PI (T
N) The code includes a country code (4 bits), a broadcast area code (4 bits), and a program reference number code (8 bits).
), Which is a code for searching for a station having the same code so that the same program can be continuously heard even while the vehicle is moving.

The second block of the 14A group includes a group type code (Group type code), a version bit B ₀ , a traffic program code TP (TN), a program type code PTY (TN), and a traffic program code TP (O
N), and an information classification code (Usage code).

The group type code is a 4-bit code for identifying what is transmitted to the data transmitted thereafter, and designates 16 groups from 0 to 15 using 4 bits. , The version A or B is designated by the version bit B ₀ (1 bit). B ₀ = 0 indicates the A version, and B ₀ = 1 indicates the B version. Therefore, the group type code of the 14A group is “1110” as shown in FIG.
0 ", while the group type code of the 14B group is" 11101 "as shown in FIG.
Given by

The traffic program station code TP (TN) is a 1-bit code indicating whether or not a traffic program station exists in its own network. Program type code PTY (T
N) are 32 program types (music programs,
5 for identifying news programs, sports programs, etc.)
This is a bit code, and a program type is assigned based on a predetermined rule.

The traffic program station code TP (ON) is a one-bit code indicating whether or not a traffic program station exists in another network. Therefore, by constantly monitoring the TP (ON) code, it is possible to know in real time whether or not a traffic program station exists in another network.

The information classification code (Usage code) is a 4-bit code indicating what kind of information is described in the third block. As shown in FIG.
Sixteen types of information from (0) to (15) are defined using the 4-bit codes “0000” to “1111”.

The character codes (char.1 to char.8) of the broadcast station name are described in (0) to (3) of the third block.
(4) Broadcast station frequency data AF (ON) of another network in the method A (Method A) format, and (5) to (9) mapped frequency (Mapppe).
d frequency) format, the broadcasting station frequency data (Tuning freq. (TN)) of the own network and the broadcasting station frequency data (Mapped FM freq. (ON)) of the other network are described. As the broadcast station frequency data of (4) or (5) to (9), one of the formats is selected in advance by each broadcast station, and the broadcast station frequency data is transmitted according to the selected format.

The third block (10) to (15)
Is not directly related to the present invention, and the description thereof will be omitted. The fourth block is provided with a program identification code PI (ON) of another network.

In the 14B group shown in FIG. 1B, the first block is provided with a program identification code PI (TN) of its own network. The second block includes a group identification code “11” indicating the 14B group.
101 ", traffic program code TP (TN), program type code PTY (TN), traffic program code TP
(ON), and a broadcast announcement code TA (ON). Therefore, by monitoring the broadcast announcement code TA (ON) of the other network, it is possible to know that traffic information is being broadcast at any station in the other network.

The third block of the 14B group is provided with a program identification code PI (TN) of its own network, and the fourth block is provided with a program identification code PI (ON) of another network.

The method of the present invention utilizes the EON information,
The broadcast station frequency data for the other network described in the 14A group is extracted and stored in the memory, and another network station broadcasting traffic information is searched based on the stored broadcast station frequency data of the other network. I do. When another network station broadcasting traffic information is detected, the received traffic information of the other network station is interrupted and received from the speaker instead of the currently reproduced source, and sounded from the speaker.

Further, simultaneously with the reception of the interrupt, the driver is notified of the switching of the receiving station to another network station by using a predetermined method such as an alarm sound. Thereby, the driver can surely know that the traffic information of another network station different from the preset receiving station has been interrupted and received.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an RD constructed by applying the method of the present invention.
It is a block diagram of one Example of an S tuner. In FIG. 1, portions indicated by reference numerals 1 to 6 are FM or FM / A
This is a so-called superheterodyne receiver for M reception, 1 is an antenna, 2 is a front end, 3 is a detection circuit, 4 is a source selector, 5 is an amplification circuit, and 6 is a speaker. The front end 2 is a system controller 7
By controlling the oscillation frequency of a built-in PLL circuit (not shown), a station desired to be tuned is tuned.

Reference numeral 8 denotes a band-pass filter (BPF) having a center frequency of 57 KHz for extracting only the RDS signal from the output of the detection circuit 3. Reference numeral 9 denotes an RDS data demodulation circuit for demodulating the RDS signal sent from the band pass filter 7 to original data. 10 is the demodulated R
A memory (RAM) for storing DS data, 11 an operation unit, 12 a display such as a liquid crystal display,
Reference numeral 13 denotes an alarm that includes a piezoelectric buzzer or the like.

The operation of the above embodiment will be described below with reference to the flowchart of FIG. In the following description of the operation, the information classification code (Usage code) of the second block in the 14A group (FIG. 4A) is 0100 = (4), and the information classification code = It is assumed that the broadcast station frequency data AF (ON) of another network is described in a method A (Method A) format corresponding to (4).

Now, the power of the car stereo including the RDS tuner of FIG. 1 is turned on (step S1), and the selector 4
Selects, for example, a CD as a reproduction source (step S
2) It is assumed that the reproduction sound of the CD is being output from the speaker 5 (step S3). In this state, the RDS
The front end 2 of the tuner is set to the FM station previously listened to or the preset FM station, and constantly receives the radio wave of the set FM station (step S).
4).

The received FM radio wave is detected by the detection circuit 3, and a 57 KHz RD
Only the S signal is extracted and demodulated to the original data by the RDS data demodulation circuit 9 (step S5). The system controller 7 constantly monitors the traffic program code TP (TN) and the traffic announcement code TA (TN) in the 0A group of the demodulated RDS data (step S).
6).

When the traffic program code TP (TN) and the traffic announcement code TA (TN) are TP (TN) = 0 and TA (TN) = 1, the system controller 7
Determines that there is a traffic information program station in another network (step S7), and the subsequently transmitted 14A
Monitor the data of the group (FIG. 4A) (step S
8), the traffic program station code TP (O
When N) = 1 (step S9), the broadcast station frequency data AF (ON) of the other network described in the third block in the 14A group is collected and stored in the memory 10 (step S10).

Next, the system controller 7
The data of the B group (FIG. 4B) is monitored (step S11), and the traffic announcement code T in the 14B group is monitored.
When A (ON) = 1, it is determined that the broadcast of the traffic information has started at any of the broadcasting stations of another network (step S12), and the reception frequency of the front end 2 is stored in the memory 10. It is set in another network station in accordance with the set broadcast station frequency data AF of the other network (step S13).

Then, the reception state is determined based on the reception signal level of the set station (step S14). If the reception state is good, the station is received as it is. If the reception state is bad, the broadcast station frequency is used. The next station is set based on the data AF, and the same search is repeated (steps S13 and S14).

When a station in a good reception state is received, the RDS data of the receiving station is monitored (step S15), and the transport program station code TP (TN) in the 0A group of the RDS data sent from the receiving station is monitored. And the traffic announcement code TA (TN) is monitored (step S16). TP
If (TN) = 1 and TA = 1 are not satisfied, it is determined that the receiving station is not currently broadcasting the traffic information, and step S
Returning to step 13, the search is repeated.

On the other hand, in step S16, the 0A group of the receiving station has TP (TN) = 1 and TA (T
If N) = 1, the system controller 7 determines that the receiving station is currently broadcasting traffic information, and starts interrupt reception of the traffic information of the receiving station (step S1).
7).

That is, the source selector 4 is switched from the CD side to the detection circuit 3 side, and a notification sound indicating that the receiving station has been switched to another network station is emitted from the piezoelectric buzzer 13 (step S18) and reproduced up to that time. Instead of the CD, the received traffic information of another network station is output from the speaker 6 via the amplifier 5 (step S19).

The notification sound from the piezoelectric buzzer 13 is:
A driver listening to a broadcast can reliably identify whether the traffic information for which interrupt reception has started is from a preset station or another network station received by EON information. For example, in the case of traffic information of a receiving station set in advance, the piezoelectric buzzer 1
3 beeps only once, while the piezoelectric buzzer 1 in the case of traffic information of another network station by EON information.
3 sounds "Pee, Pee" twice.

The notification method is not limited to the method using the piezoelectric buzzer 13. For example, as shown in FIG. 3, the volume of the traffic information broadcast from the speaker 6 may be changed in two steps. You may. If the display 12 can change the display color, the display color may be changed according to the receiving station, or if the display color cannot be changed, the display may blink. I just need. Further, various methods can be adopted, such as changing the frequency characteristic of the amplifier 5 to switch the reproduced sound from the speaker 6 to a special tone. The point is that it is only necessary to be able to identify whether the currently received traffic information belongs to the own network or to another network based on the EON information.

After a predetermined period of time, when the broadcast of the traffic information ends, 0A transmitted from the other network station being received.
Traffic announcement code TA (T
N) becomes 0 (step S20). By detecting this, the system controller 7 knows that the broadcast of the traffic information has ended (step S21).

Then, the source selector 4 is switched to the original CD side, and the reception frequency of the front end 3 is switched to the original reception station before the traffic information interruption (step S22). (Step S3) and the R of the original receiving station.
The monitoring of the DS data is continued again (step S4).

In the above-described embodiment, the traffic information is interrupted and received during the reproduction of the CD.
Only the DS tuner may be set in the traffic information receiving state and kept on standby, and the traffic information may be automatically broadcast from the speaker when the traffic information is received. The interrupt reception according to the present invention includes this case.

As is clear from the above description,
According to the traffic information receiving method of the present invention, it is possible to receive traffic information of another network using newly established EON information, and whether the traffic information being reproduced is of the own network, or It is possible to reliably notify the driver of the other network based on the EON information.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an RDS tuner configured by applying the method of the present invention.

FIG. 2 is a flowchart of the operation of the embodiment.

FIG. 3 is a diagram illustrating an example of a notification method based on a change in volume according to the present invention.

FIG. 4 is a diagram showing a data format of EON information.

FIG. 5 is a diagram showing a conventional notification method based on a volume change.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Front end 3 Detection circuit 4 Source selector 5 Amplification circuit 6 Speaker 7 System controller 8 Band pass filter 9 RDS data demodulation circuit 10 Memory 11 Operation part 12 Display 13 Piezoelectric buzzer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B 1/16 H03J 7/18

Claims (4)

(57) [Claims] 1. An RDS tuner capable of receiving an RDS broadcast wave including EON information, comprising: a system controller configured to detect start of traffic information of another network based on the EON information and to control reproduction of the traffic information. When reproducing the traffic information of the other network, the controller determines whether the volume of the traffic information output from the speaker is of the own network or not.
A method of receiving traffic information in an RDS tuner, wherein the traffic information is controlled so as to be changed stepwise so that the work can be identified . 2. An RDS tuner capable of receiving an RDS broadcast wave including EON information and having a display, detecting a start of traffic information of another network based on the EON information and reproducing the detected traffic information. The system controller, when reproducing the traffic information of the other network, the display color of the display unit to the own network
Whether it belongs to a network or another network
A traffic information receiving method in an RDS tuner, wherein the traffic information is controlled so that the traffic information can be changed. 3. An RDS tuner capable of receiving an RDS broadcast wave including EON information and having a display, detecting a start of traffic information of another network based on the EON information and reproducing the detected traffic information. The system controller, when reproducing the traffic information of the other network, displays the display of the display unit on the own network.
Network or another network
Traffic information receiving method in RDS tuner and controls so as to blink as possible. 4. An RDS tuner capable of receiving an RDS broadcast wave including EON information, comprising: a system controller configured to detect start of traffic information of another network based on the EON information and to control reproduction of the traffic information. When reproducing the traffic information of the other network, the controller determines whether the frequency characteristic of the traffic information output from the speaker is that of the own network or not.
A method for receiving traffic information in an RDS tuner, wherein the method is controlled so that the traffic information can be identified as belonging to a network .