JPH11234224A - Receiver for digital audio broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver for digital audio broadcasting with which the time for visually confirming the desired audio program and displaying data can be shortened. SOLUTION: Concerning the receiver for digital audio broadcasting for receiving the broadcasting to which a plurality of audio services are multiplexed and multicarrier modulation is performed, this receiver is provided with an FIC decode part 52 for extracting FIC information, which is located at the header of data frames of the plurality of audio services, containing the control data of services, FIC analytic part 111. for analyzing control data and finding the program information of services contained in the control data, storage part 12 for registering the program information as a registered program, display operating part 14 for displaying the program information in order to select the desired program and outputting a registering instruction so as to define the desired program as the registered program, and control part 11 for receiving the registering instruction from the display operating part to the desired program, registering the program information provided by the FIC analytic part into the storage part, retrieving the registered program out of the programs of plural services received at present and outputting a program corresponding to the retrieved registered program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital audio broadcast (DAB) receiver suitable for mobile reception, and more particularly, to a service which utilizes service data provided by digital audio broadcast to select a favorite program or a program dealing with a recent topic. The present invention relates to a receiver that can be provided by a simple operation.

[0002]

2. Description of the Related Art As a receiver of the digital audio broadcasting, there is a receiver adopting an orthogonal frequency division multiplexing system (OFDM). In digital audio broadcasting, multicarrier modulation is performed to multiplex a plurality of audio programs. The receiver can select and listen to one favorite audio program from a plurality of audio programs transmitted collectively. In this case, like a regular radio receiver,
It is possible to sequentially switch the audio program and select a listening preference.

In a digital audio broadcast receiver, data describing the audio program is transmitted together with the audio program. It is possible to display this data, look at it, and directly select one audio program from among them without listening to the audio program.
Compared with the example of selecting and listening to the audio program as described above, it is not necessary to listen to the audio program one by one, which is advantageous in terms of time reduction.

[0004]

However, in the example in which the audio program is selected by directly looking at the data display, it is necessary to judge from the display whether the audio program is desired. If the contents of the audio program cannot be determined from this display, it is necessary to switch to the audio program after all, and there is a problem that the time cannot be reduced much.

[0005] Furthermore, although the display must be viewed in the judgment from the data display, when a mobile object such as an automobile is used, it is preferable that the visual recognition time of the data display be short. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a digital audio broadcast receiver in which a desired audio program is displayed in a short time and the data display time is short.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a digital audio broadcast receiver for receiving a broadcast in which a plurality of audio services are multiplexed and multicarrier modulated. F that extracts FIC information located in a header of the data frame of the plurality of audio services and including control data of the service
An IC decoding unit, an FIC analyzing unit for analyzing the control data obtained from the FIC decoding unit to obtain program information of the service included in the control data, and a storage unit for registering the program information as a registered program A display operation unit that displays the program information to select a desired program, and outputs a registration instruction of a registered program for a favorite program, and a display operation unit for the favorite program from the display operation unit. In response to a registration instruction, the program information obtained by the FIC analysis unit is registered in the storage unit, and a registered program is searched for among a plurality of currently received service programs, and a program corresponding to the searched registered program is output. And a control unit for causing the digital audio broadcast to be received. By this means, a favorite program can be automatically obtained by using the program information included in the FIC information, the operation becomes very simple, and the initial purpose can be achieved.

The present invention also provides a digital audio broadcast receiver for receiving a broadcast in which a plurality of audio services are multiplexed and subjected to multi-carrier modulation, wherein the receiver is provided in a header of a data frame of the plurality of audio services. An FIC decoding unit for extracting FIC information including control data of the service; an FIC analysis unit for analyzing the control data obtained from the FIC decoding unit to obtain program information included in the control data; A PAD including data associated with audio data associated with audio data of each of a plurality of sub-channels following FIC information of a data frame of an audio service.
A PAD analysis unit that analyzes information and obtains topics included in the PAD information; and stores program information obtained by the FIC analysis unit and topics obtained by the PAD analysis unit.
Sorting of topics by topic appearance frequency, storage unit for storing topic appearance frequency, and topics stored in the storage unit were sorted and displayed by appearance frequency within a certain time span and sorted. A display operation unit for storing topics in the storage unit; and a topic stored in the storage unit and sorted by topics obtained by the PAD analysis unit from programs of a plurality of services currently being received, to search for a top-ranked topic. And a control unit for outputting a program of the corresponding topic when the topic coincides with the topic. By this means, it becomes possible to automatically obtain a program in which the frequency of appearance of the topic of the program included in the PAD information is high, and it is possible to know what is the top information at present.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a digital audio broadcast receiver according to the present invention. As shown in the figure, an orthogonal frequency division multiplexing (OFDM) digital audio broadcast receiver includes an antenna 1 for receiving a digital audio broadcast, and a base station that is connected to the antenna 1 and performs down conversion of a transmission frequency of a received signal. A high-frequency unit (RF) 2 for converting into an band and selecting any one ensemble from a plurality of ensembles, and an A / D connected to the high-frequency unit 2 for converting an analog signal into a digital signal
A converter 3 (Analog to Digital Converter), a demodulation unit 4 connected to the A / D converter 3 for performing a fast Fourier transform on the digital signal and demodulating the digital signal, and a plurality of data obtained by decoding the data obtained from the demodulation unit 4. Channel decoding unit 5 for selecting any one channel from service channels
An audio decoding unit 6 for decoding audio data compressed for the channel selected by the channel decoding unit 5; and a D / A converter 7 (Digital) connected to the audio decoding unit 6 and converting a digital signal to an analog signal. to an analog converter), an adder 8 for adding a beep sound signal described later to the output signal of the D / A converter 7, and a power amplifier 9 for amplifying the output signal of the adder 8.
And a speaker 10 connected to the power amplifier 9 for reproducing an audio signal into sound.

A channel decoding unit 5 performs decoding such as error correction as decoding of data obtained from the demodulation unit 4, and selects a service of any one channel from a plurality of service channels.
An FIC decoding unit 52 is provided for decoding FIC (high-speed information channel) data present in the header of the data obtained from the demodulation unit 4.

[0010] The control unit 11 is a microcomputer, and includes a FIC analysis unit 111 that analyzes data from the FIC decoding unit 52 to identify a service and the like, and is included in the data decoded by the decoding / selection unit 51. P
A PAD analysis unit 112 that analyzes AD information (program-related data) and identifies a topic is provided. Control unit 1
1 controls the decoding / selection unit 51 to select any one channel, and further controls the high frequency unit 2 to select any one channel.
Control to select one ensemble.

The storage unit 12 has a random access memory (RAM).
y), the FIC analysis unit 111 of the control unit 11 and the PA
The result obtained by the D analysis unit 112 or the like is stored. The beep generator 13 adds a beep signal to the adder 8 and outputs a beep from the speaker 10. As will be described later, for example, the control unit 11 controls the beep sound generation unit 13 to output a beep sound when a favorite program is being broadcast.

The display operation unit 14 allows the user to select an ensemble and a service based on the output results of the FIC analysis unit 111 and the PAD analysis unit 112 of the control unit 11.
The display and the operation are performed so that the setting operation and the like of the selection condition of the favorite program can be performed. FIG. 2 is a diagram illustrating an operation example of selecting an ensemble on the display operation unit 14. As shown in the figure, operation buttons A, B, C, and D are displayed on the ensemble selection display of the display operation unit 14 before reception. An ensemble is selected by pressing an arbitrary operation button, for example, the operation button B, by a touch switch.
In this case, the operation button B is displayed bright, and the other operation buttons are displayed dark.

FIG. 3 is a diagram for explaining an operation example of selecting a service on the display / operation unit 14. After the ensemble is set by the display operation unit 14, when a forward button at the bottom of the display screen is pressed, the service selection display shown in the figure is performed. For example, it is displayed that the programs of the radio station a, the radio station b, the radio station c, the radio station d, the radio station e, and the radio station f can be provided as the types of services included in the selected ensemble B. The user can select any one of these
The service of one radio station can be selected by a touch switch. Further, by pressing a radio station program registration button, information on a radio station program currently being listened to is stored in the storage unit 12.

FIG. 4 is a diagram for explaining the received ensemble. As shown in the figure, the ensemble is, for example, in a 190 to 230 MHz band or 1452 to 1492 M band.
In the Hz band, ensembles A, B, C, and D are provided, and correspond to the operation buttons A, B, C, and D.
Each ensemble is located at a fixed frequency interval, and each ensemble is composed of a number of modulated multicarriers in one symbol having a 1.5 MHz band.

FIG. 5 is a diagram showing an example of the relationship between digital audio broadcasting services and data frames. As shown in the figure, for example, one ensemble B includes services such as a radio station a, a radio station b, and a radio station c as a plurality of services. Each service includes at least one or more service components, and in this case, the radio station a includes audio a ′, data b ′, and TMCe ′ as service components.
Here, for example, the data b 'is weather forecast data and the like, and the TMC is traffic message (traffic congestion) channel data. Note that the data b 'and TMCe' are displayed on the display operation unit 14.

The radio station b has audio a 'or b' as service components, data b ',
TMCe ′. The radio station c includes audio d 'and TMCe' as service components. The same applies to other radio stations (omitted).
Next, the data frame of the digital audio broadcast has an FIC (high-speed information channel) in the header and an MSC
(Main service channel). The FIC has a hierarchical structure and is composed of a plurality of FIBs (high-speed information blocks). The data field of the FIB is composed of a plurality of FIGs (high-speed information groups), and the FIGs are composed of a header and a FIG data field. The FIG data field includes time, date, type, label, data arrangement, traffic message (TMC) control, and the like. These also include identification labels for radio station programs.

Although the FIC is not interleaved,
The MSC is divided into a plurality of CIFs (common interleave frames) and interleaved. MSC has many S
ubCh (sub-channel), and each SubC
h corresponds to the one symbol described above. Each of the service components described above is composed of each SubCh. For example, the audio sub-component is S for music, compared to speech (conversation) for news, weather forecast, etc.
The number of subChs increases, and the number of SubChs increases in the case of music as well as in the case of stereo compared to monaural.

The structure of a data frame in digital audio broadcasting differs depending on the transmission mode as shown in the following table.

[0019]

[Table 1]

FIG. 6 is a diagram showing a configuration example of the SubCh of FIG. As shown in the figure, SubCh has a header, CR
C (Cyclic Redundancy Check Code), audio data, length adjustment stuff, X-PAD, scale factor (SCF) CRC, and F-PAD are provided. Here, F-PAD (program related data) is
h is data relating to dynamic range control. X
-PAD (program-related data) includes data of the outline of contents such as music titles, singer names, news incident names (robbery incident names, sports names, etc.) as topics included in SubCh.

Next, as shown in FIG. 3, when the button for registering a radio station program is pressed on the display of the display / operation unit 14, the control unit 11 stores the number information obtained from the FIC analysis unit 111 in the storage unit 12. Start registering. FIG. 7 is a view for explaining an example of initial condition setting in the automatic program selection mode. When a forward button at the bottom of FIG. 3 is pressed, a display for setting initial conditions of the automatic program selection mode shown in FIG. This display includes a notification on / off button and automatic output on
/ Off button, priority setting on / off button, return on / off button, and reset on /
There is an off button. These on / off buttons are pressed as desired.

When the notification on / off button is on, the control section 11 outputs a beep every time a registered program is started. When the automatic output on / off button is on, the control unit 11 listens to a different program and switches to a radio station broadcasting the registered program when the broadcast of the registered program is started. The control unit 11 sets the priority order on
When the / off button is on, when a plurality of registered programs are broadcast at the same time, the radio station is switched to a radio station which is broadcasting a registered program with a higher priority among them. When the return on / off button is on, the control unit 11 returns from the end program to the broadcasting station that was broadcasting the original program after the end of the selected registered program. When the reset on / off button is on, the control unit 11 switches the button set to on to off. Further, the control unit 1
1 prohibits the above operations when the above buttons are off.

FIG. 8 is a diagram for explaining registered programs and their priorities. As shown on the left side of the figure, each time a radio station program registration button is pressed on the display operation unit 14 shown in FIG. 3, the program currently being listened to is registered and stored in the storage unit 12.
Then, the control unit 11 searches these registered programs for the programs of the plurality of services currently received, and selects a program of the service corresponding to the searched registered program (for example, “Program 2” in the figure). Output. Specifically, the search by the control unit 11 is performed by searching for radio stations a, b, c, d,
The programs e and f are a ₀ , b ₀ , c ₀ , d ₀ , e ₀ , f
₀ , and registered programs 1, 2,... N, and the programs are a ₀ , b ₀ , c
₀ , d ₀ , e ₀ , or f ₀ is one of the registered programs 1 and 2
... searching either matches one of n, for example, program a ₀ is if they match with the registered program 2, program a ₀ is output.

When the priority setting on / off button in FIG. 7 is turned on, the display operation unit 14 displays the registered programs as shown on the right side of FIG.
p) is blinked and the user is given a priority to the registration numbers. In this case, the priority of the program k is set to the first place,
Is set to the second priority. When there are search results or two or more registered programs, the control unit 11 outputs a program corresponding to a registered program (program k) having a higher priority. Note that if this setting is off, 2
When there is the above program, the program may be manually selected.

FIG. 9 is a flowchart for explaining a series of operations of the control unit 11. As shown in FIG.
In the control section 11, the display on / off section 14 has a notification on / off button, an automatic output on / off button, a priority setting on / off button, and a return on.
The initial setting conditions of the / off button and the reset on / off button are monitored.

At step S2, the control unit 11
Character string program information is input from the analysis result of the C analysis unit 111. In step S3, the control unit 11 searches whether or not the currently received program includes a registered program, and if not, proceeds to step S4. In steps S4 and S5, it is determined whether the program currently being listened to is the user's preference, and if it is, the program is registered and the registered program is stored. When the button for registering a program of a radio station shown in FIG. 3 is pressed, the control unit 11 determines that the program currently being listened to is a favorite program, and causes the storage unit 12 to register this program. If the user does not like the program currently being listened to, the user may press a button of another service (radio station) in FIG. 3 to search for a favorite program.

In steps S6 and S7, if the reset on / off button is on, the control section 11 resets the program registered in the recording section 12 in step S5. Thereby, even when the user's preference changes or the user itself changes, the initial condition setting can be newly performed, and it is possible to flexibly respond. In steps S8 and S9, if they match in step S3, the control unit 11 sends a notification on /
If the off button is on, a beep sound is output to notify the start of the registered program. Thus, it is possible to notify that the user's favorite program has started. It is effective even if the program is delayed for some reason.

In steps S10, S11, S12, if the automatic output on / off button is on,
Output the registered program. The operation of manually switching by the user is not required. It is effective even if the program is delayed for some reason. In steps S13, S14, and S15, the control unit 11
If the button of priority setting on / off is on, when there are a plurality of favorite programs at the same time, a program with a higher priority determined by the user is output. Even if the preferences conflict, the user does not need to manually switch.

In steps S16, S17 and S18, the control section 11 returns to the radio station of the original program immediately before the automatic switching after the end of the registered program. Even if the radio station before automatic switching is not the best, it is often the next best radio station, so this is returned to reduce the manual operation of switching. As described above, according to the present embodiment, it is possible for a user to listen to a favorite voice program in a short time and with a short visual recognition time of data display, so that a complicated operation is unnecessary and a user's selection range is expanded. .

FIG. 10 is a diagram for explaining another example of the initial condition setting in the automatic program selection mode in FIG. As shown in the figure, when a button for storing PAD (program related data) information is pressed when displaying the selection of a service on the display operation unit 14, the topics of X-PAD and the X-PAD for each of SubCh described in FIG. The appearance frequency is stored in the storage unit 12.

FIG. 11 is a diagram for explaining an example of setting initial conditions in the automatic program selection mode based on PAD information. When the forward button at the bottom of FIG. 10 is pressed, a display for setting the initial conditions of the automatic program selection mode based on the PAD information shown in FIG. The display includes a button for setting a time span, a button for setting a threshold value for a sort order, a button for setting a sort on / off, a button for a notification on / off, a button for an automatic output on / off, and a button for a return on / o.
There is an ff button and a reset on / off button. These on / off buttons are pressed according to the user's preference.

Notification on / off button, automatic output on
The description of the / off button, the return on / off button, and the reset on / off button are the same as those in FIG. FIG. 12 is a view for explaining an example of setting the time span of FIG. When the time span setting button is pressed in FIG.
A time span setting display shown in FIG. In this display, for example, a time span can be set for each day, week, or month. In this example, the time span is set to two weeks.

FIG. 13 is a diagram for explaining an example of setting a threshold value for the sort order. When the button for setting the threshold of the sort order in FIG. 11 is pressed, the display of the threshold setting of the sort order shown in FIG. The sort order threshold is a threshold for selecting a topic having a higher frequency of appearance of topics appearing in the PAD. In this example, the threshold is set to 5, and the topics are narrowed down to the top 5 topics.

FIG. 14 is a diagram for explaining the appearance frequency of topics. When the PAD information storage button is pressed on the display of the display operation unit 14 in FIG.
The PAD information of the character string is input from 12 and stored in the storage unit 12 as a topic, and the frequency of appearance of the topic within the set time span is stored as shown in FIG. FIG. 15 is a diagram illustrating an example of sorting topics. As shown in FIG. 4A, the display operation unit 14 assigns the appearance order to the topics in the storage unit 12 and the topics based on the appearance frequency. When the sort setting button is pressed on the display operation unit 14 in FIG. 11, the topics are sorted based on the order of appearance, as shown in FIG. Further, when a button for setting a threshold value of the sort order is pressed on the display operation unit 14 in FIG. 11, a topic having a threshold value or more is selected as shown in FIG. The selected topic is used by the control unit 11 to search for a program. That is, if there is a program that matches the selected topic, the program is switched to the program corresponding to the selected topic even when listening to another program. Also, the reason why a threshold is set in the order of the sorted topics and the topics having the highest appearance frequency are narrowed down is that the current top information can be heard with priority. Another reason is to prevent the program from being frequently switched to a lower topic.

FIG. 16 is a flowchart for explaining another series of operations of the control unit 11. As shown in the figure, steps S21 and S22 are the same as steps S1 and S2 in FIG. In step S23, the PAD analysis unit 112 of the control unit 11 performs an analysis for inputting the PAD information of the character string and extracting a topic. In step S24, the control unit 1
1 judges whether the topic of the currently received program matches the sorted topic, and if not, proceeds to step S25.

In steps S25, S26 and S27, the control section 11 causes the storage section 12 to store topics within the time span. In the storage unit 12, the topics are sorted based on the appearance frequency, and the sorted topics are narrowed down to the top topics. As a result, programs such as recent music (song name) and news are preferentially selected. Steps S29 and S30 are the same as steps S6 and S7 in FIG.

Steps 31, 32, 33, 34, 35,
38, 39, and 40 correspond to steps S8, 9, 10, 1 in FIG.
The same as 1, 12, 16, 17, and 18. Step S
At 36 and 37, it is determined whether the current topic is higher than the sorted topic, and if it is higher, the program of the higher-ranked topic is output. For example, if the user listens to the sports B program currently having the fourth appearance frequency and the program with the song title A having the first appearance frequency starts, the program is switched to this program. In order to select a program with a high topic in this way, the user does not need to manually switch.

As a result, the most recent audio program
Program in a short time and with a short data-viewing time.
Which eliminates the need for complicated operations.
The user's selection range expands. Figure 17 sorts topics
It is a figure explaining other examples of. As shown in this figure, the control unit
14, the storage unit 12 causes the radio stations a, b, c, d,
Topics are sorted for each of e and f, and the sorted
Picks are narrowed down to those with the highest appearance frequency. in this way
Topics focused on each radio station are the radio
Of stations from other radio stations
Judge whether the topic ranks high and become a radio station with high rank
Used to switch. For example, the current radio station a
No program a _FourAnd listening to the program b on another radio station b_TwoStarts
Mari, program b_TwoAppears in the program a_FourHigher than
Is program b_TwoSwitch to.

FIG. 18 is a flowchart illustrating the sorting of topics in FIG. As shown in the figure, the difference from FIG. 16 is that steps S57 and S58 and steps S66 and S6 are performed.
7 and the other steps are the same. Step S
At 57 and 58, the storage unit 12 sorts radio stations, and narrows down the top topics for each radio station.

In steps S66 and S67, the control unit 1
1 determines whether a topic of another radio station has a higher rank than the current topic and outputs a program of a radio station of a topic with a higher rank. As described above, even when a high topic program is selected for each radio station, as described above, the same operation and effect can be obtained even when a high topic program is selected for the entire radio station.

[0041]

As described above, according to the present invention, the FI
By using the program information included in the C information, a favorite program can be automatically obtained, the operation becomes very simple, and the program in which the topic of the program included in the PAD information has a high appearance frequency is automatically selected. Now you can know what is the top information.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a digital audio broadcast receiver according to the present invention.

FIG. 2 is a diagram illustrating an operation example of selecting an ensemble on a display operation unit.

FIG. 3 is a diagram illustrating an operation example of service selection on a display operation unit.

FIG. 4 is a diagram illustrating an ensemble received.

FIG. 5 is a diagram illustrating an example of the relationship between digital audio broadcast services and data frames.

6 is a diagram illustrating a configuration example of a SubCh of FIG. 5;

FIG. 7 is a diagram illustrating an example of initial condition setting in a program automatic selection mode.

FIG. 8 is a diagram illustrating the priority order of registered programs.

FIG. 9 is a flowchart illustrating a series of operations of the control unit 11.

FIG. 10 is a diagram illustrating another example of initial condition setting in the automatic program selection mode in FIG. 7;

FIG. 11 is a diagram illustrating an example of initial condition setting in a program automatic selection mode based on PAD information.

FIG. 12 is a diagram illustrating an example of setting of a time span in FIG. 11;

FIG. 13 is a diagram illustrating an example of setting a threshold value of a sort order.

FIG. 14 is a diagram illustrating the appearance frequency of topics.

FIG. 15 is a diagram illustrating an example of sorting topics.

FIG. 16 is a flowchart illustrating another series of operations of the control unit 11;

FIG. 17 is a diagram illustrating another example of sorting topics.

18 is a flowchart illustrating sorting of topics in FIG. 17;

[Explanation of symbols]

 Reference Signs List 5 ... Channel decoding unit 8 ... Addition unit 11 ... Control unit 12 ... Storage unit 13 ... Beep sound formation unit 14 ... Display operation unit 51 ... Decoding / selection unit 52 ... FIC decoding unit 111 ... FIC analysis unit 112 ... PAD analysis unit

Claims (22)

[Claims] 1. A digital audio broadcast receiver for receiving a broadcast in which a plurality of audio services are multiplexed and subjected to multicarrier modulation, wherein the receiver is located in a data frame header of the plurality of audio services. An FIC decoding unit for extracting FIC information including control data; an FIC analyzing unit for analyzing the control data obtained from the FIC decoding unit to obtain program information of the service included in the control data; A storage unit for registering as a registered program, a display operation unit for displaying the program information for selecting a desired program, and outputting a registration instruction of a registered program for a favorite program, Upon receiving a registration instruction for the favorite program from the display operation unit, the program information obtained by the FIC analysis unit is registered in the storage unit. Is allowed, the receiver of digital audio broadcasting, characterized in that it comprises a control unit for outputting a program corresponding to the current searching registered programs on a plurality of service programs is being received retrieved registered program. 2. The apparatus according to claim 1, further comprising a notification sound forming unit for forming a notification sound, wherein the control unit simultaneously outputs the notification sound via the notification forming unit when the output of the program corresponding to the registered program is started. The digital audio broadcast receiver according to claim 1, wherein: 3. The digital audio broadcast receiver according to claim 2, wherein the control unit controls output permission or prohibition of the notification sound. 4. The digital audio broadcast receiver according to claim 1, wherein the control unit controls output permission or prohibition of a program corresponding to a registered program. 5. The display operation unit, when there are a plurality of registered programs at the same time, stores the priority order together with the registered programs in the storage unit, and the control unit outputs the program corresponding to the higher priority order. The digital audio broadcast receiver according to claim 1, wherein: 6. The digital audio broadcast receiver according to claim 5, wherein the control unit controls output permission or prohibition based on priority. 7. The digital audio broadcast according to claim 1, wherein the control unit returns to an original program before outputting the program corresponding to the registered program when the program corresponding to the registered program ends. Receiver. 8. The method according to claim 1, wherein the control unit performs control to permit or prohibit returning to the original program at the end of the program corresponding to the registered program. A digital audio broadcast receiver according to claim 7. 9. The digital audio broadcast receiver according to claim 1, wherein the control unit performs control for resetting a registered program registered in the storage unit. 10. A digital audio broadcast receiver for receiving a broadcast in which a plurality of audio services are multiplexed and subjected to multi-carrier modulation, wherein the receiver is located in a header of a data frame of the plurality of audio services. An FIC decoding unit for extracting FIC information including control data; an FIC analysis unit for analyzing the control data obtained from the FIC decoding unit to obtain program information included in the control data; F of data frame
A PAD analysis unit for analyzing PAD information including data related to the audio data accompanying each audio data of a plurality of sub-channels following the IC information to obtain topics included in the PAD information; A storage unit for storing the obtained program information and the topics obtained by the PAD analysis unit, and the frequency of appearance of the topics; and sorting the topics stored in the storage unit by the frequency of appearance within a certain time span. A display operation unit for storing the displayed and sorted topics in the storage unit; and a PAD from a plurality of currently received service programs.
A control unit that searches for topics stored in the storage unit and sorted by the topics obtained by the analysis unit, and outputs a program of the corresponding topic when the searched topic matches the top topic. Audio broadcast receiver. 11. The control unit searches for a topic obtained from the PAD analysis unit from programs of a plurality of services currently received and stored in the storage unit and sorts the topics. 11. The digital audio broadcast receiver according to claim 10, wherein, when? Matches, a program corresponding to a topic having a higher sort order is output. 12. The digital audio broadcast receiver according to claim 11, wherein the control unit controls output permission or prohibition of a program corresponding to the topic of the sort order. 13. The digital audio broadcast receiver according to claim 12, wherein the time span is arbitrarily set from outside. 14. The digital audio broadcast according to claim 10, wherein the display operation unit is configured to arbitrarily set an appearance frequency ranking threshold for narrowing the sorted topics to the top topics from the outside. Receiver. 15. A notifying sound forming unit for forming a notifying sound, wherein the control unit notifies via the notifying unit when the output of the program corresponding to the stored and sorted topic is started. The digital audio broadcast receiver according to claim 10, wherein the sound is output simultaneously. 16. The digital audio broadcast receiver according to claim 15, wherein the control unit controls output permission or prohibition of the notification sound. 17. The digital audio broadcast receiver according to claim 10, wherein the control unit controls output permission or prohibition of a program corresponding to the stored and sorted topics. 18. The control unit according to claim 10, wherein the control unit returns an original program before outputting the corresponding program when the program corresponding to the stored and sorted topic ends. Digital audio broadcast receiver. 19. The apparatus according to claim 19, wherein the control unit performs control to permit or prohibit returning to the original program at the end of the program corresponding to the stored and sorted topics. The digital audio broadcast receiver according to claim 18. 20. The digital audio broadcast receiver according to claim 10, wherein the control unit performs control for resetting the stored and sorted topics. 21. The storage unit stores program information obtained by the FIC analysis unit and a topic obtained by the PAD analysis unit for each of a plurality of services, and the display operation unit stores the topic information for each of a plurality of services. The topics are sorted by the frequency of appearance, and the control unit searches the topics obtained from the PAD analysis unit for each of a plurality of services and stored in the storage unit and sorts the topics. The digital audio broadcast receiver according to claim 10, wherein the program outputs a program of a corresponding topic. 22. The control unit searches for a topic obtained from the PAD analysis unit for each of a plurality of services and searches for a sorted topic stored in the storage unit. 22. A program of a topic having a higher sort order is output.
A digital audio broadcast receiver according to claim 1.