JPH0983303A - Digital voice broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital voice broadcast receiver which never retrieves the programs of undesired genres by means of the PTY that is multiplexed to a digital voice broadcast station. SOLUTION: The radio waves sent from a digital voie broadcast station are received by an antenna 1 and reduced down to the intermediate frequency at a tuner part 2, and the demodulation levels of the radio waves are detected. A signal processing part 3 demodulates the signals, detects the errors of the digital data, and outputs the corrected digital data to a voice part 4. At the same time, the PTY code is outputted to a system control part 6 as the additional information. The part 4 applies the audio decoding to the input digital data and generates the digital auido data. Furthermore, a D/A converter is added to convert the digital audio data into the analog audio data together a voice amplifier. In such a constitution, the voices are generated through a speaker 5. Then the part 6 controls the part 2 to retrieve the programs in response to the commands and requests given from a key group 7.

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 receiver compatible with a broadcasting system in which broadcast program content identification information is multiplexed with a digital audio broadcast signal, and more particularly to a search for audio broadcast programs.

[0002]

2. Description of the Related Art On the receiver side of a conventional analog FM audio broadcast or AM audio broadcast, it is unknown what kind of genre the broadcast program content is being broadcasted to, for example, jazz, classical music or rock. . Therefore, when searching for a desired program, manually tune to the next broadcasting station, listen to the contents of the program to see if it belongs to the desired genre, and if it is different, tune to the next broadcasting station again. I was doing the operation to distinguish the contents of the program.

In recent years, there is an RDS that multiplexes digital data for channel selection, broadcasting station display, etc. into FM audio broadcasting. The RDS has a program type (PTY), which is used to identify program content, such as news, light music, education, sports, and the like.

A method of using this PTY is disclosed in, for example, Japanese Patent Laid-Open No. 05-343955.
In this system, the PTY of the received program is stored in the preset key, and the PTY corresponding to the preset key can be searched.

[0005]

The above-mentioned conventional receivers for FM audio broadcasting and AM audio broadcasting cannot search by program content or skip a program of a genre unnecessary for the user. There was a problem.

Further, when using PTY, since only one specific PTY is searched at the time of searching, it takes a long time to search for a target PTY, and it is impossible to search for two or more PTYs at the same time. was there.

The present invention has been made in order to solve the above problems, and automatically skips a program of an undesired genre by using a PTY multiplexed as additional information in a digital audio broadcast. The purpose is to obtain a digital audio broadcasting receiver that can be searched and heard.

[0008]

In the digital audio broadcasting receiver according to the present invention, the P multiplexed in the received signal is used.
TY is taken out and a skip key is provided.

[0009] Further, the PTY being received is a non-search target PTY.
When is, the search is automatically restarted.

Further, the PTY codes stored by the revival key are released one by one.

Further, the stored PTY is cleared by a clear key.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the digital audio broadcast receiver according to the embodiment of the present invention, the skip key serves to store the PTY code of the broadcast program currently being received.

Further, the PT stored by the skip key
The Y code serves to compare with the PTY code being received.

The PTY stored by the skip key
It works to erase by the revive key.

Further, the PTY stored by the skip key
The clear key works to erase all the stored PTY codes.

The present invention will be specifically described below with reference to the drawings showing the embodiments thereof. Embodiment 1. 1 is a block diagram showing the configuration of a digital audio broadcast receiver according to a first embodiment of the present invention. In the figure, 1 is an antenna, 2 is a tuner section, and 3
Is a signal processing unit, 4 is a voice unit, 5 is a speaker, 6 is a system control unit, and 7 is a key group.

The operation of FIG. 1 will be described below.

Antenna 1 receives a radio wave from a digital audio broadcasting station, tuner unit 2 drops it to an intermediate frequency, and a demodulation level is detected. The digital data after signal demodulation, error detection, and error correction in the signal processing unit 3 is output to the voice unit 4
Output to Also, a PTY code is output to the system control unit 6 as additional information.

The audio section 4 audio-decodes the input digital data to generate digital audio data. Further, it is composed of a D / A converter for converting digital audio data into analog audio data and an amplifier for audio amplification, and the speaker 5 produces audio. The system control unit 6 controls the tuner unit 2 to perform a search in response to a request by the command of the key group 7.

Next, the operation of the main part will be described in more detail with reference to FIGS. 2, 3 and 4. FIG. 2 is a diagram showing a main key group of the present invention. In the figure, 70
Is a skip key, 71 is a revival key, and 72 is a clear key. FIG. 3 is an explanatory diagram showing an example of broadcast program content identification information. In the figure, "01100" is for classical music, "01101" is for jazz, and "0101" is for popular rock.
It can be seen that it is "0". FIG. 4 is an explanatory diagram showing the case where the program contents and the content identification information for each broadcasting station are sent, so to speak, the broadcasting program sent from each broadcasting station in the current time zone is sent together with the content identification information. The following shows an example of the case where it is coming. Currently the receiver is PTY of station a
Is broadcasting the classic "01100".
By pressing the skip key 70 in this state, the system control unit 6 first stores “01100” as the PTY code that is not the search target. Then, the tuner unit 2 is controlled to select station b as the next station and PTY is detected.
Since the PTY is “01100” and is not a search target, the next station c is selected. The PTY is "01010", which does not match the input PTY, so that station c is continuously received. Next, when the skip key is pressed again, PTY
"01010" is also stored as a non-search target, and in the search, stations d, e, and f are skipped and PTY "0110" of station g is skipped.
"1" is selected.

Embodiment 2 FIG. Embodiment 1. At
Currently, I am listening to PTY “01101” from station g, but the program content has changed, for example, PTY “0111”
When it becomes a fork of “0”, PTY is not included in the search target, and therefore the search is not performed and the PTY is set to “0”.
In the case of the classic "1100", the system control unit 6 controls the tuner unit 2 to search for the next station because PTY is not included in the search target. That is, the broadcasted PTY "01100" is compared with the "01100" and "01010" stored as non-search target PTYs, and since "01100" matches, the next station is searched.

Embodiment 3 FIG. Embodiment 1. And 2.
In, the PTY is restored by inputting the revival key by the revival key 71 of the key group 7 and setting the PTY that is the most recent non-search target PTY with the skip key as the PTY to be searched. FIG. 5 shows a state in which the current non-search target PTY is stored in the system control unit 6. That is, PTY is "01100" and "0101".
0 ”is stored, and here PTY“ 01010 ”is stored.
Since it is stored as the non-search target PTY, when the revival key is input, the PTY of "01010" is deleted and the non-search target PTY is "01" as shown in FIG.
100 ". In addition, for example, it is possible to correct the original by pressing the revival key immediately after pressing the skip key by mistake.

Embodiment 4 Embodiment 1. And 2.
When the clear key 72 is input to the key group 7 with the clear key 72, all the PTY codes recognized and stored by the system control unit 6 are cleared. That is, the PTY code stored by pressing the skip key inside the system control unit 6, here,
“01100” and “01010” are deleted.

[0024]

Since the present invention is constructed as described above, it has the following effects.

Since the search method using the PTY multiplexed in the digital audio broadcast is adopted, the content of the genre can be judged on the receiver side. Therefore, by automatically skipping and searching for a program of an undesired genre. , You can listen only to the programs you want to listen to.

Also, the PTY being received is a PT that is not a search target.
When it becomes Y, the search is automatically restarted and the program of the desired genre is automatically searched, so that the listener can always keep listening to the desired program.

Further, by the revival key, the PTY not searched
You can easily revive programs of the genre
Further, the clear key allows the PTY of the memory to be erased at a time, so that a very convenient receiver can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a digital audio broadcast receiver that is Embodiments 1 to 4 of the present invention.

FIG. 2 is a diagram showing a main key group of the present invention.

FIG. 3 is an explanatory diagram showing an example of broadcast program content identification information.

FIG. 4 is an explanatory diagram showing a case where program content and content identification information for each broadcasting station are sent.

FIG. 5 is a diagram showing a state in which a non-search target PTY is stored in the system control unit 6.

FIG. 6 is a diagram showing how a non-search target PTY is stored in a system control unit 6.

[Explanation of symbols]

1 antenna, 2 tuner section, 3 signal processing section, 4
Audio section, 5 speakers, 6 System control section, 7
Key group.

Claims (4)

[Claims] 1. A program type (PTY) multiplexed in a digital audio broadcast is taken out, and a skip key is provided. By inputting the skip key at the current reception, the received PTY code is stored and at the time of retrieval. A digital audio broadcasting receiver characterized in that the stored PTY code is excluded from the search target. 2. The digital audio broadcast receiver according to claim 1, wherein the search is automatically restarted when a PTY that is not a search target is received while receiving the digital audio broadcast. 3. A revival key is provided, and by pressing the revival key, the stored PTY codes are released one by one in a new order.
A digital audio broadcast receiver as described. 4. The digital audio broadcast receiver according to claim 1, further comprising a clear key, and by pressing the clear key, all the stored PTY codes are released. .