JP6831309B2 - Radio broadcast receiver - Google Patents

Description

The present invention relates to a technique for searching for a broadcast that can be received by a radio broadcast receiving device.

As a technique for searching for broadcasts that can be received by a radio broadcast receiver, radio broadcasts in which RDS (Radio Data System) data including PI (Program Identification), which indicates the identification of a program service, is multiplexed into audio and broadcast. In the receiving radio broadcast receiving device, a frequency channel whose received electric field strength is larger than a predetermined threshold value is searched as a receivable frequency channel, and a table in which the frequency of the searched frequency channel and the PI acquired from the frequency channel are registered is registered. The technique for producing is known (for example, Patent Document 1).

Here, in this technology, when entering an area where it is difficult to receive radio waves, the frequency and PI of each broadcast registered in the table are maintained and the table is maintained until the area where it is difficult to receive radio waves exits. The received electric field strength of the frequency channel of each broadcast frequency registered in is monitored without acquiring PI from the frequency channel, and the frequency whose received electric field strength registered in the table is larger than a predetermined threshold value. The broadcast frequency and PI of the channel are treated as the receivable broadcast frequency and PI, and the broadcast frequency and PI of the frequency channel whose received electric field strength is not larger than the predetermined threshold value are treated as the unreceivable broadcast frequency and PI. Treat as. Then, when leaving the area where it is difficult to receive radio waves, the broadcast frequency and PI of the frequency channel whose received electric field strength registered in the table is not larger than a predetermined threshold value are deleted.

According to such a technology, when a broadcast that is temporarily unreceivable due to entering an area where it is difficult to receive radio waves, such as an underground parking lot or a tunnel, is transitioned to a receivable state, the broadcast is transmitted. It will be possible to quickly return the registration to the table as a receivable broadcast.

Japanese Unexamined Patent Publication No. 2013-175967

The above-mentioned determination of the receivability of the frequency and PI broadcast registered in the table at the time of entering the area where it is difficult to receive radio waves is determined only from the reception electric field strength of the frequency channel of the broadcast without acquiring PI. According to the technique of determining and treating the broadcast frequency and PI as the receivable broadcast frequency and PI, the following problems may occur.

That is, when it becomes difficult to receive radio waves due to entering a long tunnel, different broadcasts may be received at the same frequency at the entrance and exit of the tunnel.
Then, in this case, according to the above-mentioned technique, the frequency and PI of the broadcast can be received only by checking the received electric field strength of the frequency channel of each broadcast frequency registered in the table at the time of entering the tunnel. Since it is treated as a broadcast frequency and PI, the wrong PI will be registered in the table as a receivable broadcast PI when leaving the tunnel.

Specifically, for example, when only broadcast A can be received as a broadcast of the frequency channel of frequency a at the entrance of the tunnel and only broadcast B can be received as a broadcast of frequency a at the entrance of the tunnel. When broadcast B becomes receivable at the exit of the tunnel, the PI of broadcast A is improperly displayed in the table as the PI of broadcast of frequency a, not the PI of broadcast B that can be received at frequency a at that time. It will be registered in.

Therefore, it is an object of the present invention to promptly and more appropriately restore the registration of a broadcast as a receivable broadcast when the temporarily unreceivable broadcast transitions to a receivable state. And.

In order to achieve the above object, the present invention receives a broadcast on a radio broadcast receiving device that receives a broadcast in which data including program identification information is multiplexed with audio, which is transmitted using a frequency channel, and the broadcast is performed. A reception output means that outputs the audio received in, a station list in which station information including frequency and program identification information is registered, and a frequency channel with good reception quality are searched, and the program identification information is obtained from the broadcast of the searched frequency channel. The frequency of the searched frequency channel and the program identification information acquired from the broadcast of the frequency channel are registered in the station list as the station information, and the station information including the frequency of the frequency channel having poor reception quality is registered in the station list. The station information registration means to be deleted from the station list, and when the deterioration of the reception environment of the broadcast radio wave is detected and the deterioration of the reception environment of the broadcast radio wave is detected, each station information registered in the station list immediately before the detection is registered. The shunt list saving means for saving the saved list as a shunt list and the shunt list saving means detect the improvement of the reception environment of the broadcast radio wave after the deterioration of the reception environment of the broadcast radio wave is detected, and the reception environment of the broadcast radio wave is improved. At that time, among the station information registered in the station list, all the station information registered in the station list after the save list saving means detects deterioration of the reception environment of the broadcast radio wave is saved. Checks whether or not it is registered in the shunting list, and if it is registered, at least each station information that is not registered in the station list among the station information registered in the shunting list is included in the station information. It is provided with a station information recovery means for checking whether or not the reception quality of the frequency channel of the included frequency is good, and if it is good, registering the station information in the station list.

According to such a radio broadcast receiving device, when the receiving environment of the broadcasting radio wave is improved after the receiving environment of the broadcasting radio wave is deteriorated, there is no difference in the broadcasting that can be received immediately before the reception environment of the broadcasting radio wave is deteriorated and at the present time. That is, among the station information registered in the station list, all the station information registered in the station list after detecting the deterioration of the reception environment of the broadcast radio wave is the station before the deterioration of the reception environment of the broadcast radio wave. If it can be estimated from whether or not the station information in the list is registered in the registered evacuation list and it can be estimated that there is no difference, the frequency channel of the frequency registered in each station information registered in the evacuation list The reception quality is investigated without acquiring the program identification information from the frequency channel, and the station information of the frequency with good reception quality is registered in the station list.

Therefore, the reception environment of broadcast radio waves deteriorates due to entering an area where it is difficult to receive radio waves, and the station information of each broadcast that is temporarily unreceivable is registered in the station list, that is, it is temporarily unreceivable. The return of the station information of the broadcast to the station list is promptly performed when the reception environment of the broadcast wave is restored.
Here, even if broadcasts with different program identification information are broadcast on the same frequency channel immediately before the reception environment of the broadcast radio wave deteriorates and when the reception environment of the broadcast radio wave improves, the station information of both broadcasts is Since it is different, it is not estimated that there is no difference between the broadcast that can be received immediately before the reception environment of the broadcast wave deteriorates and the broadcast that can be received at the present time, and the station information of the broadcast that can be received immediately before the reception environment of the broadcast wave deteriorates and cannot be received at present. Is prevented from accidentally returning from the save list to the station list.

Therefore, when a broadcast that is temporarily unreceivable transitions to a receivable state, it is possible to properly restore the registration of the station list of the broadcast.
Further, in order to achieve the above-mentioned problems, the present invention receives a broadcast on a radio broadcast receiving device that receives a broadcast in which data including program identification information is multiplexed with audio, which is transmitted using a frequency channel. A reception output means for outputting the audio received in the broadcast, a station list in which station information including frequency and program identification information is registered, a frequency channel with good reception quality is searched, and a program is searched from the broadcast of the searched frequency channel. The identification information is acquired, the frequency of the searched frequency channel and the program identification information acquired from the broadcast of the frequency channel are registered in the station list as the station information, and the station information including the frequency of the frequency channel having poor reception quality. The station information registration means for deleting from the station list, and each station information registered in the station list immediately before the detection when the deterioration of the reception environment of the broadcast radio wave is detected and the deterioration of the reception environment of the broadcast radio wave is detected. The shunt list saving means for saving the registered list as a shunt list, and the shunt list saving means for detecting the improvement of the broadcast radio reception environment after detecting the deterioration of the broadcast radio reception environment, and the broadcast radio reception environment. Of the station information registered in the station list, all of the station information registered in the station list after the save list storage means detects deterioration of the reception environment of the broadcast radio wave when the above is improved. It is checked whether or not it is registered in the saved evacuation list, and if it is registered, at least each station information that is not registered in the station list among the station information registered in the evacuation list is included in the station list. It is equipped with a means for returning station information to be registered in.

According to such a radio broadcast receiving device, when the receiving environment of the broadcast radio wave is improved after the reception environment of the broadcast radio wave is deteriorated, there is no difference between the broadcast immediately before the reception environment of the broadcast radio wave is deteriorated and the broadcast that can be received at the present time. That is, among the station information registered in the station list, all of the station information registered in the station list after detecting the deterioration of the reception environment of the broadcast radio wave is the station before the deterioration of the reception environment of the broadcast radio wave. If it can be estimated from whether or not the station information in the list is registered in the registered evacuation list and it can be estimated that there is no difference, each station information registered in the evacuation list is registered in the station list.

Therefore, the reception environment of broadcast radio waves deteriorates due to entering an area where it is difficult to receive radio waves, and the station information of each broadcast that is temporarily unreceivable is registered in the station list, that is, it is temporarily unreceivable. The return of the broadcast station information to the station list is promptly performed when the reception environment of the broadcast radio wave is restored.
Here, even if broadcasts with different program identification information are broadcast on the same frequency channel immediately before the reception environment of the broadcast radio wave deteriorates and when the reception environment of the broadcast radio wave improves, the station information of both broadcasts is Since it is different, it is not estimated that there is no difference between the broadcast that can be received immediately before the reception environment of the broadcast wave deteriorates and the broadcast that can be received at the present time, and the station information of the broadcast that can be received immediately before the reception environment of the broadcast wave deteriorates and cannot be received at present. Is prevented from accidentally returning from the save list to the station list.

Therefore, when a broadcast that is temporarily unreceivable transitions to a receivable state, it is possible to properly restore the registration of the station list of the broadcast.
Here, the radio broadcast receiving device as described above detects deterioration of the receiving environment of the broadcast radio wave when the number of registered station information in the station list changes significantly by a predetermined level or more in the save list storage means. It may be configured to do so.

Further, in the above radio broadcast receiving device, when a predetermined number of station information is registered in the station list after the save list saving means detects deterioration of the reception environment of the broadcast radio wave in the station information returning means. , The improvement of the reception environment of the broadcast radio wave may be detected.

Further, in the above radio broadcast receiving device, the broadcast is an FM broadcast in which data is multiplexed into audio by an RDS (Radio Data System), and the program identification information is data multiplexed into the FM broadcast. It may be PI (Program Identification) included in.

Further, in the above radio broadcast receiving device, the station information is registered in the station list of the selected broadcast in the receiving output means according to the user's selection of the broadcast in which the station information is registered in the station list. The reception control means for starting the reception of the frequency channel of the frequency included in the station information and the output of the voice received on the frequency channel may be provided.
Further, the above radio broadcast receiving device may be an in-vehicle radio broadcasting receiving device mounted on an automobile.

As described above, according to the present invention, when a broadcast that is temporarily unreceivable transitions to a receivable state, the restoration of the registration of the broadcast as a receivable broadcast is promptly and more appropriate. Can be done.

It is a block diagram which shows the structure of the radio broadcasting receiving apparatus which concerns on embodiment of this invention. It is a figure which shows the station list stored in the memory of the radio broadcast receiving apparatus which concerns on embodiment of this invention. It is a figure which shows the display example of the radio broadcasting receiving apparatus which concerns on embodiment of this invention. It is a flowchart which shows the station registration operation control processing which concerns on embodiment of this invention. It is a flowchart which shows the station registration process which concerns on embodiment of this invention. It is a flowchart which shows the station return processing which concerns on embodiment of this invention. It is a figure which shows the operation example of the radio broadcasting receiving apparatus which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows the configuration of the radio broadcast receiving device according to the present embodiment.
Here, the radio broadcast receiving device according to the present embodiment is a radio broadcast receiving device whose position changes, such as a car radio mounted on an automobile or a portable radio receiver.
As shown in the figure, the radio broadcast receiving device includes two receiving units 1, a selector 2, an audio signal processing unit 3, a speaker 4, a control unit 5, a memory 6, an operation unit 7, and a display unit 8.

Each of the two receiving units 1 is a receiving device that receives FM broadcasts in which data is multiplexed into audio by RDS (Radio Data System) and broadcast, and each receiving unit 1 has an antenna 11 and a tuner 12. It is composed of. Further, the tuner 12 of each receiving unit 1 includes an FM front end 121 (FM F / E121), an FM demodulation unit 122, and an RDS decoder 123.

Further, in each tuner 12, the FM front end 121 receives the frequency channel of the frequency set as the reception frequency from the control unit 5 and sends the received signal to the FM demodulation unit 122, and the FM demodulation unit 122 hears from the received signal. The signal is demodulated and sent to selector 2. Further, when the received signal includes a data signal multiplexed into an audio signal by RDS (Radio Data System) and transmitted, the FM demodulator 122 sends this to the RDS decoder 123 and sends it to the RDS decoder 123. 123 decodes the data from the data signal and sends it to the control unit 5. Here, the data sent by the RDS decoder 123 to the control unit 5 includes PI (Program Identification), which is an identifier of a program (program) broadcast on the frequency channel of the set reception frequency, and the program (program). ) PTY (Program Type) representing the genre, AF which is a list of alternative frequencies which are the frequencies of other FM broadcasts broadcasting the same PI program as the program, and the frequency channel of the set reception frequency. Includes PS (Program Service), which represents the name of the broadcasting station that is broadcasting.

Further, in each tuner 12, the FM front end 121 calculates and controls the reception quality Qr of FM broadcasting of the frequency channel of the set reception frequency from the reception electric field strength and the SN ratio of the frequency channel of the set reception frequency. Notify department 5.

Here, the control unit 5 uses the tuner 12 of one of the two receiving units 1 as a foreground tuner and the tuner 12 of the other receiving unit 1 as a background tuner, and uses the foreground tuner as the selector 2. The audio signal input from the FM demodulation unit 122 of the above is output to the audio signal processing unit 3. The audio processing unit adjusts and amplifies the frequency characteristics of the voice signal input from the selector 2 and outputs the sound signal to the speaker 4.

Next, in the present embodiment, the station list is stored in the memory 6.
The station list is a list in which currently receivable frequency channels are registered, and as shown in FIG. 2, the station list includes entries (each line in the figure) provided corresponding to each of the currently receivable frequency channels. The broadcast frequency, PI, PS, etc. of the frequency channel corresponding to each entry are registered as station information.

Here, the operation of registering station information in this station list will be described later.
By the way, in the configuration of such a radio broadcast receiving device, as shown in FIG. 3, the control unit 5 displays a list of the frequencies and PS (broadcasting station names) of the broadcasting stations registered in the station list on the display unit 8. The frequency received by the foreground tuner by displaying and accepting the selection of the broadcasting station from the list of users via the operation unit 7 and setting the frequency of the broadcasting station that accepted the selection as the reception frequency in the foreground tuner. Performs processing such as switching channels.

The operation of registering the frequency channel in the station list will be described below.
When the radio broadcast receiving device is activated, the control unit 5 performs station registration operation control processing.
FIG. 4 shows the procedure of this station registration operation control process.
As shown in the figure, the control unit 5 first starts the station list registration process in the station registration operation control process (step 402).
FIG. 5 shows the procedure of this station list registration process.
As shown in the figure, in the station list registration process, the control unit 5 first sets the reception frequency Fr of the background tuner to the minimum frequency in the frequency range in which FM broadcasting can be performed (step 502).

Then, the reception quality Qr of the frequency channel of the reception frequency Fr is acquired from the background tuner (step 504).
Then, it is examined whether the reception quality Qr is better than the predetermined threshold value Th (step 506), and if not, the process proceeds to step 514.
Here, the value of the threshold value Th is set to a value that can guarantee that the sound received on the frequency channel can be output satisfactorily if the reception quality is a frequency channel better than the threshold value Th.

On the other hand, when the reception quality Qr is better than the threshold value Th (step 506), the PI, PS, etc. received in the frequency channel of the reception frequency Fr are acquired from the RDS decoder 123 of the background tuner (step 508). .. Here, it takes a relatively long time to acquire PI, PS, etc. from the frequency channel.

Then, a new entry is created in the station list, and the reception frequencies Fr, PI, PS, etc. are registered as station information in the created entry (step 510). Then, the process proceeds to step 512.

Then, when the process proceeds to step 512, the reception quality of the frequency channel of the frequency of each station information registered in the station list is investigated by having the background tuner receive each frequency channel, and the reception quality is the threshold value. Remove station information entries from the station list that include frequencies that are not better than Th. Then, the process proceeds to step 514.

Next, if the process proceeds from step 506 or step 512 to step 514 as described above, the reception frequency Fr for which the reception quality Qr was acquired in the previous step 504 is the maximum frequency in the frequency range in which FM broadcasting can be performed. Whether or not it is checked (step 514), and if it is the maximum frequency, the process returns from step 502.

On the other hand, when the reception frequency Fr is not the maximum frequency in the frequency range in which FM broadcasting can be performed (step 514), the minimum frequency interval between frequency channels in which FM broadcasting can be performed (for example, 100 kHz) is set as one step. , The reception frequency Fr set in the background tuner is increased by one step (step 516), and the process returns to the process from step 504.

The station list registration process that the control unit 5 starts in step 402 of the station registration operation control process has been described above.
Returning to FIG. 4, when such a station list registration process is started (step 402), the control unit 5 monitors the occurrence of deterioration of the radio wave reception environment (step 404). Here, the detection of deterioration of the radio wave reception environment is performed, for example, when the number of station information registered in the station list decreases more than a predetermined number during a predetermined unit period, the deterioration of the radio wave reception environment is detected. It is done by detecting.

Then, when the deterioration of the radio wave reception environment occurs (step 404), the station list immediately before the deterioration of the radio wave reception environment is saved as a save list and saved in the memory 6 (step 406). Here, the control unit 5 holds the station list at each time point as the history of the station list for a certain period of time, and in step 406, the reception environment of the radio wave detected in step 404, which is held as the history of the station list. The station list immediately before the occurrence of deterioration, that is, immediately before the number of station information registered in the station list decreases by more than a predetermined number during a predetermined unit period is saved in the memory 6.

Then, if the save list is saved in the memory 6 (step 406), then it waits for n (for example, 3) station information to be added to the station list (step 408). Here, the occurrence of n additions of station information to the station list represents the recovery of the radio wave reception environment.

Then, when n station information is added to the station list (step 408), it is checked whether all of the added n station information are registered in the escape list (step 410), and any one of them is used. If it is not registered, the process returns from step 404.

On the other hand, when all of the added n station information is registered in the escape list (step 410), the station registration process shown in FIG. 5 is stopped (step 412), and then the station is restored. When the process is executed (step 414) and the station return process is completed, the station registration process is restarted (step 416), and the process returns to the process from step 404.

Here, FIG. 6 shows the procedure of the station return process executed in step 414.
As shown in the figure, in the station return process, the control unit 5 sequentially uses each station information registered in the escape list as the station information to be processed (steps 602, 614, 616), and the following station information to be processed is described. Perform processing.

That is, first, it is checked whether or not the same station information as the station information processed this time in the escape list is registered in the station list (step 604), and if it is registered, the station information processed this time is processed. To finish.

On the other hand, if the same station information as the station information processed this time in the escape list is not registered in the station list (step 604), the reception frequency Fr of the background tuner is set as the station processed this time in the escape list. Set to the frequency registered in the information (step 606).

Then, the reception quality Qr of the frequency channel of the reception frequency Fr is acquired from the background tuner (step 608).
Then, it is examined whether the reception quality Qr is better than the threshold value Th (step 610), and if it is not good, the processing for the station information to be processed this time is terminated.

On the other hand, when the reception quality Qr is better than the threshold value Th (step 610), a new entry is created in the station list, and the station information to be processed this time is registered in the entry created in the station list. (Step 612). Then, the processing of the station information to be processed this time is completed.

The station registration operation control process performed by the control unit 5 has been described above.
Hereinafter, an operation example when the reception environment of the broadcast radio wave is deteriorated by such a station registration operation control process will be shown.
Now, the reception environment of broadcast radio waves is good, and the station information of broadcasts that can be received by the station registration process that accompanies the acquisition of PI etc. is registered in the station list, and the station information of station information that cannot be received is registered. As a result of the deletion, it is assumed that 16 station information is registered in the station list as shown in FIG. 7a. Then, in this state, when a car enters an area where it is difficult to receive radio waves, such as a tunnel or an underground parking lot, the station information in the station list sharply decreases due to the station registration process, and deterioration of the radio wave reception environment is detected. Then, the station list of FIG. 7a immediately before the detection is saved as the escape list shown in FIG. 7b.

Then, after the station information registered in the station list is reduced to two station information as shown in FIG. 7c, the automobile leaves the area where it is difficult to receive radio waves, and the station registration process is performed in the station list. When n station information is added, it is determined whether or not all of the added n station information is registered in the shunting list shown in FIG. 7b.

That is, when n is 3, the station information registered in the station list is reduced to two station information as shown in FIG. 7c, and then 3 is displayed in the station list as shown in FIGS. 7d1 and 7d2. When one station information is added and the number of station information registered in the station list is 5, it is determined whether or not all the three added station information are registered in the escape list shown in FIG. 7b. ..

Here, if the area where it is difficult to receive radio waves when the car leaves is an underground parking lot or a relatively short tunnel, it is difficult to receive the radio waves and the position of the car just before entering the area where it is difficult to receive radio waves. Since the positions where you have left the area are not far apart, there is no difference in the broadcasts that can be received at both positions. Therefore, in this case, as shown in FIG. 7d1, all the three station information added to the station list is also registered in the escape list. In other words, if all of the three station information added to the station list is registered in the escape list, it can be estimated that there is no difference between the broadcasts that can be received immediately before the radio wave reception environment deteriorates and at the present time.

Then, when all of the three station information added to the station list are registered in the shunt list, the station return process receives the frequency channel of the frequency registered in each station information registered in the shunt list. The quality is investigated without acquiring PI or the like from the frequency channel, and station information of the frequency having good reception quality is registered in the station list as shown in FIG. 7e. As a result, the station information of each broadcast that was temporarily unreceivable due to entering an area where it was difficult to receive radio waves was registered in the station list, that is, the station list of the station information of the broadcast that was temporarily unreceivable. Return to is completed quickly.

After that, the station information is registered in the station list by the station registration process accompanied by the acquisition of PI and the like, and the station information that cannot be received is continuously deleted from the station list.

On the other hand, when the area where it is difficult to receive radio waves is a relatively long tunnel, the position of the car immediately before entering the area where it is difficult to receive radio waves and the area where it is difficult to receive radio waves have left. Since the positions are so far apart, there may be differences in the broadcasts that can be received at both positions. Therefore, in this case, as shown in FIG. 7d2, it is highly probable that the three station information added to the station list includes station information not registered in the escape list. In other words, if all three station information added to the station list is not registered in the escape list, it can be determined that there is a difference between the broadcasts that can be received immediately before the radio wave reception environment deteriorates and at the present time. ..

In this way, if it can be determined that there is a difference between the broadcast that can be received immediately before the radio wave reception environment deteriorates and the broadcast that can be received at the present time, the station information is not restored from the escape list by the station restoration process, and the PI etc. The station registration process that accompanies the acquisition is continuously performed.
Here, even if different broadcasts can be received at the same frequency depending on the position of the car immediately before entering the area where it is difficult to receive radio waves and the position where it exits from the area where it is difficult to receive radio waves, both broadcasts. Since the PI values of are different, the station information will be different. Therefore, even in this case, the station information of the broadcast that could not be received at the present time, which could be received at the position of the car immediately before entering the area where it is difficult to receive radio waves, will not be accidentally returned to the station list. ..

The embodiment of the present invention has been described above.
In the above embodiment, the station return process shown in FIG. 6 is replaced with a process of registering the station information not registered in the station list among the station information registered in the escape list in the station list. It may be carried out.

By doing so, when all the n station information added to the station list is registered in the shunting list, that is, there is no difference between the broadcasts that can be received immediately before the radio wave reception environment deteriorates and at the present time. If it can be estimated, the station information of the broadcast that is temporarily unreceivable can be returned to the station list more quickly.

1 ... Receiver, 2 ... Selector, 3 ... Audio signal processing, 4 ... Speaker, 5 ... Control, 6 ... Memory, 7 ... Operation, 8 ... Display, 11 ... Antenna, 12 ... Tuner, 121 ... Front End, 122 ... Demodulator, 123 ... RDS decoder.

Claims (7)

A radio broadcast receiver that receives broadcasts in which data including program identification information, which is transmitted using a frequency channel, is multiplexed into audio.
A reception output means that receives a broadcast and outputs the audio received in the broadcast,
A station list in which station information including frequency and program identification information is registered, and
The station searches for a frequency channel with good reception quality, acquires program identification information from the broadcast of the searched frequency channel, and uses the frequency of the searched frequency channel and the program identification information acquired from the broadcast of the frequency channel as the station information. A station information registration means for registering in the list and deleting station information including frequencies of frequency channels having poor reception quality from the station list.
When the deterioration of the reception environment of the broadcast radio wave is detected and the deterioration of the reception environment of the broadcast radio wave is detected, the list in which each station information registered in the station list immediately before the detection is registered is saved as a save list. Means and
When the save list storage means detects an improvement in the reception environment of the broadcast radio wave after detecting the deterioration of the reception environment of the broadcast radio wave and the reception environment of the broadcast radio wave is improved, the station information registered in the station list Of these, after the save list saving means detects deterioration of the reception environment of the broadcast radio wave, it is checked whether all the station information registered in the station list is registered in the saved save list and registered. If so, is the reception quality of the frequency channel of the frequency included in the station information good for at least each station information not registered in the station list among the station information registered in the save list? A radio broadcast receiving device comprising a station information return means for registering the station information in the station list when the condition is good. A radio broadcast receiver that receives broadcasts in which data including program identification information, which is transmitted using a frequency channel, is multiplexed into audio.
A reception output means that receives a broadcast and outputs the audio received in the broadcast,
A station list in which station information including frequency and program identification information is registered, and
The station searches for a frequency channel with good reception quality, acquires program identification information from the broadcast of the searched frequency channel, and uses the frequency of the searched frequency channel and the program identification information acquired from the broadcast of the frequency channel as the station information. A station information registration means for registering in the list and deleting station information including frequencies of frequency channels having poor reception quality from the station list.
When the deterioration of the reception environment of the broadcast radio wave is detected and the deterioration of the reception environment of the broadcast radio wave is detected, the list in which each station information registered in the station list immediately before the detection is registered is saved as a save list. Means and
When the save list storage means detects an improvement in the reception environment of the broadcast radio wave after detecting the deterioration of the reception environment of the broadcast radio wave and the reception environment of the broadcast radio wave is improved, the station information registered in the station list Of these, after the save list saving means detects deterioration of the reception environment of the broadcast radio wave, it is checked whether all the station information registered in the station list is registered in the saved save list and registered. When the radio wave is set, the radio wave has a station information return means for registering at least each station information not registered in the station list among the station information registered in the evacuation list in the station list. Broadcast receiver. The radio broadcast receiving device according to claim 1 or 2.
The escape list storage means is a radio broadcast receiving device characterized in that when the number of registered station information in the station list changes significantly in a decreasing direction by a predetermined level or more, the deterioration of the receiving environment of the broadcast radio wave is detected. The radio broadcast receiving device according to claim 1, 2 or 3.
The station information recovery means improves the reception environment of the broadcast radio wave when a predetermined number of station information is registered in the station list after the save list storage means detects deterioration of the reception environment of the broadcast radio wave. A radio broadcast receiver characterized by detecting. The radio broadcast receiving device according to claim 1, 2, 3 or 4.
The broadcast is an FM broadcast in which data is multiplexed into audio by RDS (Radio Data System), and the program identification information is PI (Program Identification) included in the data multiplexed in the FM broadcast. A radio broadcast receiver characterized by that. The radio broadcast receiving device according to claim 1, 2, 3, 4 or 5.
In response to the user's selection of a broadcast whose station information is registered in the station list, the frequency channel of the frequency included in the station information registered in the station list of the selected broadcast is selected by the reception output means. A radio broadcast receiving device characterized by having a reception control means for initiating reception and output of audio received on the frequency channel. The radio broadcast receiving device according to claim 1, 2, 3, 4, 5 or 6.
The radio broadcast receiving device is an in-vehicle radio broadcasting receiving device mounted on an automobile.