JP3336565B2 - Radio receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is, "Radio of data
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio receiver for receiving a radio broadcast in which broadcast-related information data is superimposed on a broadcast signal, such as a multiplex broadcast system , and more particularly to a radio receiver capable of searching for a program content .

[0002]

2. Description of the Related Art An RDS broadcast is a radio broadcast in which broadcast-related information data is superimposed on a broadcast signal and transmitted. On the other hand, in FM broadcasting in Europe and the United States, where broadcasting is becoming increasingly crowded, it is desired to easily tune to a program of a target genre. Therefore, non-audible digital data for each program genre is superimposed on a normal VHF-FM broadcast radio wave, and the receiver analyzes the data to automatically select a program of a target genre. I have. This automatic tuning is PTY
(Program Type) search, which is a receiver capable of demodulating non-audible digital data, is called an RDS (Radi
o Date System) receiver. A broadcasting station that broadcasts by superimposing digital data on a normal FM signal is called an RDS broadcasting station.

FIG. 4 shows a conventional RDS receiver in which P
Shows the correspondence between the genre of the program that can be specified at the time of TY search and the key number of the key input unit, for example, “1”
When the number key is turned on, "news" is designated and a PTY search for the news program can be performed. When the "2" key is turned on, "information" is designated and the information program can be PTY searched.
Thereafter, by turning on a key of a predetermined number in the same manner, a desired genre corresponding to the key number can be designated, and a PTY search for a program of the desired genre can be performed.

FIG. 5 is a flowchart showing a case where a conventional RDS receiver actually performs a PTY search.
In this example, the lock program is set to P
Perform TY search. First, in step S11, the PTY key is turned on to set the PTY selection mode, and then the key "5", that is, the lock key is turned on as shown in step S12. Then, the genre to be searched is set to "lock" as shown in step S13, and the PTY scan is started as shown in step S14. Then, in this scan, an RDS broadcast station is detected (step S1).
6) If the genre of the program is further locked (step S17), the PTY scan is terminated at that point (step S19), and the detected RDS broadcast station is received. On the other hand, if the RDS broadcast station is not detected,
If the genre of the program is not locked even if a broadcast station is detected, the next frequency is scanned (step S1).
8) Until the scanning of all the frequencies is completed (step S15), the detection of the RDS broadcast station and the analysis of whether the genre of the program is locked are continued.

[0005]

However, in the above-mentioned conventional RDS receiver, as shown in FIG. 4, a method in which twenty or more kinds of program genres are designated one by one by a key operation, When it is desired to search a plurality of genres of the same system widely, it is necessary to repeatedly specify each genre in the same system one by one by key operation and search, which is very troublesome.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention analyzes program-specific genre data superimposed on a broadcast wave and automatically selects a program of a desired genre. In a searchable radio receiver, program genres can be classified by system, program content identification search genres can be specified by system , and program content identification search genres can be classified by system.
After specifying, specify each genre in the specified system
You can specify the genre for each system by operating the numeric keys.
The genre within the specified system.
A radio receiver characterized by being operated by a push key or a down key . In another embodiment, the present invention
Is the genre of the program superimposed on the broadcast wave.
Program to automatically select the program of the desired genre.
Radio receiver that can search for program contents
And categorize program genres by system, and by system
You can specify the genre of the program content identification search, and
After specifying the genre of the set content identification search by system,
Each genre within the specified system can be specified.
To specify another genre, use the numeric keys.
Use the same numeric keys to specify individual genres in the system
Radio receiver.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a radio receiver according to the present invention will be described in detail with reference to the accompanying drawings. The embodiment is a case where the present invention is applied to an RDS receiver. FIG. 3 is a block diagram showing an RDS receiver according to an embodiment of the present invention. In this figure, reference numeral 21 denotes an antenna, and an FM radio wave (FM signal) received by the antenna 21 is supplied to an FM tuner circuit 22, where channel selection, amplification, and demodulation are performed. The demodulated signal output from the FM tuner circuit 22 is supplied to the MPX circuit 23,
After being separated into signals, the R and L signals are amplified by the amplifier 24 and then converted into sound by the speakers 25 ₁ and 25 ₂ . The demodulated signal is supplied to the RDS decoder 26,
The RDS demodulated signal (R
DS data) is supplied to a microprocessor (MPU) 28 to analyze PTY data, that is, data representing a program genre. Then, at the time of the PTY search, the analyzed data is compared with the data designating the genre of the reception program read out in the MPU 28 according to the operation state of the key input unit 27, and the MPU 28 compares the data.
If they match, the signal from the MPU 28 stops the frequency scan (tuning) in the tuner circuit 22. In addition,
The key input unit 27 includes a numeric keypad 29, an up / down key 30, and a PTY key 31 as numeric keys. Reference numeral 32 denotes a display connected to the MPU 28, which displays the genre, reception frequency, and the like of the program input from the key input unit 27.

In such an RDS receiver, the genre of the program in the PTY search is specified by the key input section 27 as described above. At this time, the genre of the program is set in the RDS receiver. By categorizing by system, the genre can be specified by system. That is, there are more than twenty genres of PTY search programs as shown in FIG. 4, and among them, for example, "rock", "classic rock", and "soft rock" are used as one system, and As the genre, for example, “1” of the numeric keypad 29 of the key input unit 27 in FIG.
Number key. “Classic rock” and “classic” can be designated as one system, and a classic genre can be designated by a tenth key, for example, a “2” key. Furthermore, "religious music" and "religious talk" are used as religious genres, for example, the "3" key of the numeric keypad 29,
"R &B" and "soft R &B" are used as R & B genres, for example, the "4" key of the numeric keypad 29, and "talk" and "religion talk" are used as the genre.
For example, each key can be designated by a “5” key. The genres that are not classified into the system are numeric keys 2 for each genre.
Specify with the number key of 9. Here, the relationship between the key number and the genre is unique to this embodiment, and is different from the relationship in FIG.

FIG. 1 is a flowchart showing a case where a PTY search is actually performed by designating a rock genre. First, in step S41, the PTY key 31 of FIG. 3 is turned on to enter the PTY selection mode, and then the "1" key of the ten keys 29 is turned on as shown in step S42. Then, the genre to be searched is set to "rock genre" as shown in step S43, and the PTY scan is started as shown in step S44. Then, in this scan, an RDS broadcast station is detected (step S46),
Further, it is determined in step S that the genre of the program is “rock”, “classic rock”, or “soft rock”.
If analyzed at 47, S48, S49 (the PTY data (PTY code) decoded by the RDS decoder 26 is "lock", "classic lock" or "soft lock"
If), you end the PTY scan at that time (step S51) to receive the detected RDS broadcast station. On the other hand, if the genre of the program is not a rock genre even if the RDS broadcast station is not detected or the RDS broadcast station is detected, the next frequency is scanned (step S).
50), detection of the RDS broadcast station and analysis of whether the genre of the program is the rock genre are continued until the scanning of all the frequencies is completed (step S45).

In the above example, a rock genre is specified. However, the same applies to a case where another system genre is specified. When a PTY scan is started, a broadcasting station of a genre in the specified system is found. The PTY scan is terminated at that point, and the detected broadcast station (program) is received.

According to such an RDS receiver, the genre of the PTY search can be designated for each system, so that the operation can be made very simple when it is desired to search a plurality of genres of the same system widely. it can.

[0012] Such a search is performed, for example, when the "1" key of the numeric keypad 29 for designating a rock genre is turned on, the three data "rock", "classic rock" and "soft rock". Is read out in the MPU 28, and the MPU 28 can easily realize this by simply comparing each of the three data with the received genre data.

After the genre for each system is specified as described above, the up / down key 30 of the key input unit 27
By operating, individual genres within the specified system can also be specified. This point will be described with reference to FIG. 2 using a rock genre.
When the TY key 31 is turned on (step S61) and the "1" key of the numeric keypad 29 is turned on (step S62), a rock genre is designated. Thereafter, as shown in step S64 within a certain period of time in step S63. When one of the up / down keys 30 (up key or down key) of the key input section 27 is operated, the selection is switched from the designation of the rock genre to the designation of each genre in the rock genre, and further designated. As shown in step S65, each genre to be performed is "rock" → "classic rock" → "soft rock" → "rock" ...
・ Circulates and switches. This state is indicated by the display 32 in FIG.
Is displayed with. Therefore, when the desired genre is displayed, the up-down key 3 is pressed as shown in step S66.
By terminating the operation of 0, it is possible to specify the genre desired in the lock system as shown in step S67. With such an operation, as shown in step S64, the "1" key of the numeric keypad 29 specifying the lock genre is repeatedly turned on in place of the up / down key 30, thereby changing the lock genre to the lock system genre. It is also possible to switch to individual genres, and further circulate the individual genres to different ones and switch sequentially. After the lock genre is designated by the “1” key of the numeric keypad 29, the up / down key 30 and the “1” key (the same numeric key) of the numeric keypad 29 are kept over a certain period of time as shown in step S63. If the operation is not performed, the lock genre (genre by system) is designated as shown in step S68, and the search for the lock genre is started. In addition, after moving to the individual genre designation, "1" of the up / down key 30 or the numeric keypad 29 is continued within a predetermined time.
If turn key is not being operated, immediately before the individual genre is determined that the genre of choice of the individual genre search is started.

In the above embodiment, the PT
As the Y scan, a frequency scan for scanning all frequencies in the band has been performed, but a preset channel scan for scanning only preset channels may be performed. Further, the present invention can be similarly performed not only in RDS broadcasting but also in multiplex broadcasting in which information other than ordinary information is superimposed and broadcast.

[0015]

As described in detail above, according to the radio receiver of the present invention, the genre of the program content identification search can be specified for each system, so that it is possible to search a plurality of genres of the same system widely. Operation can be very simple.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a PTY search by the RDS receiver of FIG. 3;

FIG. 2 is a flowchart illustrating another operation of the RDS receiver in FIG. 3;

FIG. 3 is a block diagram showing an RDS receiver as an embodiment of a radio receiver according to the present invention.

FIG. 4 is a diagram showing a correspondence relationship between a program genre that can be designated at the time of a PTY search and a key number of a key input unit in a conventional RDS receiver.

FIG. 5 is a flowchart showing a PTY search in a conventional RDS receiver.

[Explanation of symbols]

 Reference Signs List 21 antenna 22 FM tuner circuit 26 RDS decoder 27 key input unit 28 microcomputer 29 numeric keypad 30 up / down key 31 PTY key

Claims (2)

(57) [Claims] 1. A radio receiver capable of analyzing program genre data superimposed on a broadcast wave and automatically selecting a program of a desired genre in a program content identification search. The genre of the program content identification search can be specified for each system , and the genre of the program content identification search can be specified for each system.
After that, you can specify individual genres in the specified system
Come, the designation of the branch-by-branch of the genre is carried out in the operation of the numeric keys,
Up key is used to specify each genre in the specified system
Or a radio receiver characterized by being operated by a down key . 2. The program of a program superimposed on a broadcast wave.
Analyze the data for each channel to program the desired genre.
Radio reception that allows program content identification search to automatically select channels
At Shinki, program genres are classified by system, and programs are classified by system.
Can specify the genre of the content identification search, moreover, after specifying the genre of program content identification search in another system, can specify individual genre in a given system, the designation of the of another system genre in the operation of the numeric keys Do
Specify each genre within the specified system with the same numeric key.
Radio receiver characterized by the following operations: