JP3082797B2 - Receiving machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver using RDS data.

[0002]

2. Description of the Related Art Some FM broadcasting stations in Europe add RDS data to an original audio signal. The RDS data is a collection of digital data related to broadcast stations, programs, and the like.
The data is PS data キ ャ ラ ク タ Character data indicating the name of the broadcasting station. PTY code @ Program content identification code. news,
The program contents such as light music, education, sports, and information are indicated by 5-bit codes. Such data is included.

The RDS data is subjected to an encoding process for error correction, and the RDS data subjected to the encoding process has a frequency of 57 kHz (which is three times the frequency of the stereo pilot signal of 19 kHz). The subcarrier signal is balanced-modulated, and the modulated signal is added to a monaural signal or a stereo composite signal and frequency-multiplexed, and the multiplexed signal is transmitted by an FM wave.

Therefore, by using the RDS data, it is possible to receive a specific broadcast station or a specific program,
Traffic information and the like can be obtained.

[0005]

By the way, if a PTY code is used, a program having a specific content, for example, a broadcast station broadcasting a sport is searched in order, and the searched broadcast station is stored in a memory in order. Thereafter, it is possible to select a desired content from the stored broadcast stations, for example, to select a soccer broadcast in sports (hereinafter, search and storage using the PTY code as described above). Is referred to as “PTY search”).

However, since the frequency band of FM broadcasting in Europe is 87.5 to 108 MHz and the frequency interval is 50 kHz, about 100 FM broadcasting can be received on average. Thus, for example, the P of a station broadcasting a sport
Even when performing a TY search, a considerable number of
As a result of the Y search, the result is stored in the memory, but it is impossible to predict the number of the stored broadcasting stations. Also, depending on the content and time of the program, PTY
The number of stations as a result of the search varies greatly.

Therefore, if the capacity of the memory for storing the result of the PTY search is set to, for example, 10 stations, when the PTY search is performed, the memory becomes full before the PTY search is performed on all the FM broadcast bands. is there. Moreover, there are cases where programs having exactly the same contents are broadcast at different frequencies, such as a main station and a satellite station. In such a case, if the program contents are the same but the frequencies are different, all the broadcasting stations Since each is stored in the memory as a result of the PTY search, the number of broadcast stations that can be stored in the memory apparently decreases.

[0008] Of course, if the capacity of the memory for storage is made sufficiently large, the results of all PTY searches can be stored in the memory, but the use efficiency of the memory will be reduced. Also, broadcasting stations with the same content but different frequencies,
Since all are stored, the same program may be selected when tuning is performed on the result of the PTY search, and the usability is deteriorated.

[0009] The present invention aims to eliminate the above problems.

[0010]

By the way, considering a synthesizer type receiver, this synthesizer type receiver is generally provided with a preset function. That is, the data of the reception frequency can be stored in the memory with respect to the broadcasting station which is usually received, and when a predetermined key is pressed, the broadcasting station of the stored data can be immediately selected. Have been.

[0011] Considering the PTY search, P
When performing a TY search, it is sufficient to perform the PTY search for a broadcasting station that normally receives signals, and it is not necessary to perform a PTY search for a broadcasting station that does not normally receive signals.

The present invention focuses on the above points, and performs a PTY search only on preset broadcast stations.

That is, in the present invention, a receiving circuit of a synthesizer system, a memory for storing frequency data for selecting a broadcasting station in a predetermined area, and RDS data from a broadcasting wave signal received by the receiving circuit are provided. A demodulation circuit for demodulating, a decoder circuit for performing decoding processing such as error correction on the RDS data output from the demodulation circuit, a page selection key, a plurality of tuning keys, and the RD
Selecting means for designating a program having a content corresponding to the PTY code included in the S data; and a control circuit for controlling channel selection, wherein the control circuit includes the page selection key and the channel selection key. When the operation is performed, the frequency data stored in the area specified by the page selection key and the tuning key is extracted from the area of the memory, and the extracted frequency data is supplied to the reception circuit. Then, when a broadcast station having a frequency according to the frequency data is selected and the content of the program is designated by the selection means, the broadcast stations having the frequency according to the frequency data stored in the memory are sequentially received. At the time of this reception, the PTY code included in the received RDS data and the PTY code When a match between the two PTY codes is detected, information on the reception frequency at this time is stored, and the above-mentioned information is obtained for all broadcast stations having a frequency according to the frequency data stored in the memory. When the detection of the coincidence of the PTY codes is completed, the reception frequency indicated by the stored information is sequentially selected, and a key input indicating whether or not the selection is possible is checked for each selection. When the input is negative at that time, the tuning of the receiving frequency is continued, and the tuning performed in the above order is continued, and when the key input is affirming the tuning of the receiving frequency at that time, The receiver is configured to continuously receive the reception frequency at that time.

[0014]

When a PTY search is instructed, the PTY search is executed only for broadcast stations registered in the memory. Therefore, the memory area required for the PTY search can be reduced even in an area where a large number of broadcast stations can be received.

[0015]

In FIG. 1, reference numeral 10 denotes an FM broadcast receiving circuit configured in a synthesizer system, and a reception signal of an antenna 11 is supplied to an antenna tuning circuit 12 of an electronic tuning system, and an FM of a target frequency f12 is supplied. The broadcast wave signal S12 is extracted.

The signal S12 is transmitted to the high-frequency amplifier 1
3 to the mixer circuit 14 and
An oscillation signal S21 having a frequency f21, for example, f21 = f12 + 10.7 [MHz] (1) is extracted from O21, and this signal S21 is supplied to the mixer circuit 14 as a local oscillation signal. The frequency is converted to a signal S14 (the intermediate frequency is 10.7 MHz). Then, the intermediate frequency signal S14 is supplied to the FM demodulation circuit 16 through the intermediate frequency amplifier 15, and an audio signal (monaural signal or stereo composite signal) S17 and a modulated signal S31 modulated by the RDS data are taken out. The signal S17 is the low-pass filter 1
7 and the speaker 19 through the low frequency amplifier 18.

At this time, the VCO 21 is connected to the circuit 2
Together with 2 to 25, the PLL 20 is configured. That is, the signal S21 from the VCO 21 is supplied to the variable frequency dividing circuit 22 and divided into a frequency of 1 / N, and this frequency-divided signal is supplied to the phase comparing circuit 23 and the oscillation circuit 24
An oscillation signal having a reference frequency, for example, a frequency of 50 kHz, is taken out from the control circuit 23, and the oscillation signal is supplied to the comparison circuit 23. The output voltage of the filter 25 is supplied to the tuning circuit 12 as a tuning voltage.

Therefore, in the steady state, the frequency of the frequency-divided signal from the frequency-dividing circuit 22 and the frequency of the oscillation signal of the oscillation circuit 24 are equal, and the frequency f21 of the oscillation signal S21 at this time is f21 = N × 50 [KHz] ‥‥‥ (2), and from equations (1) and (2), f12 = N × 0.05−10.7 [MHz].

Therefore, if the frequency division ratio N is changed by "1" between 1964 and 2374, the local oscillation frequency f
21 changes from 98.2 MHz to 118.7 MHz at intervals of 50 kHz, so that the reception frequency f12 changes the frequency band of 87.5 MHz to 108.0 MHz in a frequency step of 50 kHz and the frequency division ratio N
Will change correspondingly.

Reference numeral 40 denotes a microcomputer for system control, 41 denotes its CPU, 42
Is a ROM in which various processing routines and, for example, the processing routine 100 shown in FIGS. 2 and 3 are written, 43 is a RAM for a work area, and 44 is a memory for storing various data. Are connected to the CPU 41 through the system bus 49.

In this case, the memory 44 is a ROM that can be electrically erased and written, or a RAM (not shown) backed up by a battery,
That is, the memory 44 is a non-volatile memory, and can hold written data even when the power is turned off.

The memory 44 contains, for example, FIG.
A frequency table FTBL as shown in FIG. That is, this frequency table FTBL is entirely composed of pages A to
C is divided into three pages, and the pages A to C
Are divided into areas 0 to 9 for 10 stations.
In each of the areas 0 to 9, frequency data for receiving a broadcast of each frequency is registered. FIG.
In the example, the frequency division ratio N is registered as the frequency data. Note that N = 0 indicates unregistered.

Therefore, if a page and an area are designated in the frequency table FTBL, the frequency division ratio N registered therein can be read from the designated page area.

Further, 45 is an output port, 46 is an input port, 47 is a key interface circuit, 48 is a display controller, and these circuits 45 to 48 are connected to the CPU 41 through a system bus 49. The port 45 is connected to the frequency dividing circuit 22, and a program described later is executed to set the frequency dividing ratio N in the frequency dividing circuit 22.

The signal S31 from the demodulation circuit 16 is supplied to the demodulation circuit 32 through the band-pass filter 31, and the RDS data S32 is demodulated. Supplied to Further, a part of the intermediate frequency signal S14 is supplied from the intermediate frequency amplifier 15 to the detection circuit 35, and the presence or absence of the intermediate frequency signal S14 is detected.
Is supplied to the port 46.

The key interface circuit 47 includes an up key KUP and a down key KD as operation keys.
W, a page key KPG, a memory key KMM, a PTY search key KPS, a direct key KDT, and numeric keys KN0 to KN9 of "0" to "9" are connected. Note that these keys KUP to KUP
Each of N9 is configured by a non-lock type push switch.

The display controller 48 has an LCD 51 as display means for displaying a reception state and the like.
Is connected.

Each operation of the receiver is controlled by the microcomputer 40 and executed as follows.

<PTY Search and Tuning Using the Result> When performing a PTY search, first, a PTY search key KPS is pressed. Then, the process of the CPU 41 starts from step 101 of the routine 100, and then waits for a key input in step 102. When the up key KUP or the down key KDW is pressed, the CPU 41
Proceeds from step 102 to step 103. In step 103, the key input in step 102 is checked. If the key input is the up key KUP or the down key KDW, the process proceeds from step 103 to step 104.

In step 104, the variable DSP is incremented or decremented by "1". In this case, the variable DSP is data for specifying a desired program when the listener selects a desired program from program contents that can be specified by the PTY code.
Among the program contents that can be specified by the TY code, the variable DSP
The program having the content indicated by the PTY code having a value equal to the above is selected as a result. When the value of the variable DSP is P
When the value exceeds the maximum value (= 31) or the minimum value (= 0) of the TY code, the value is set to the minimum value or the maximum value.

Subsequently, the processing of the CPU 41 is performed in step 10
Then, in step 105, the character data according to the variable DSP is supplied to the controller 48. For example, as shown in FIG.
Character 5 that specifies program content such as "NEWS" corresponding to SP
1A is displayed, and then the process returns to step 102.

Therefore, each time the up key KUP or the down key KDW is pressed, the variable DSP changes each time the key is pressed, and the LCD 5 corresponds to the value of the variable DSP.
The character 51A such as "NEWS" indicating the program content that can be designated by the PTY code displayed in 1 is changed to the next character or the previous character.

When characters 51A indicating the program contents desired for the PTY search are displayed on LCD 51, the PT
When the Y search key KPS is pressed again, the processing of the CPU 41 proceeds from step 103 to step 111. In this step 111, the variables ADRS and CNTR are set to ADRS = 0 and CNTR =
Set to 0. Here, the variable ADRS indicates the total start address for each area of pages A to C of the frequency table FTBL of the memory 44. ADRS = 0 is the start address of area 0 of page A. ADRS = 1 is that of page A. ADRS = 2 indicates the start address of area 2 of page A. ADRS = 29 indicates the start address of area 9 of page C. The variable CNTR is a counter for the number of broadcast stations that are broadcasting programs of the content desired by the listener at the time of the PTY search.

Then, in step 112, the frequency division ratio N written in the ADRS-th area of the frequency table FTBL is read out, and the read frequency division ratio N is read from the port 45. Through the variable frequency divider 2
2, the receiving circuit 10 is set to the receiving state of the frequency f12 corresponding to the frequency division ratio N.

Next, at step 113, it is checked whether or not the RDS data S33 can be obtained from the decoder 33. If not, the process proceeds from step 113 to step 117. Then, it is checked in step 118 whether ADRS <30. If ADRS <30, the process returns from step 118 to step 112.

When the RDS data S32 is obtained from the decoder 33 in step 113, the process proceeds from step 113 to step 114, and in this step 114, the PDS included in the RDS data S32 is
It is checked whether the TY code is equal to the variable DSP, that is, at this time, whether the program content of the received broadcast is the one desired by the listener. In the case of ≠ DSP), the process proceeds from step 114 to step 117.

However, if the received broadcast program content is the content desired by the listener in step 114 (when PTY code = DSP), the process proceeds from step 114 to step 115, and in this step 115 The address ADRS at this time is stored in the RAM 43.
At step 116.
In, the counter CNTR is incremented by “1”, and then the process proceeds to step 117.

Therefore, in steps 111 to 118, the broadcast stations having the division ratio N registered in the frequency table FTBL are sequentially tuned in, and the program contents of the tuned broadcast station are selected by the listener. In the case of the content of the broadcast station, the start address ADRS indicating the area of the frequency table FTBL in which the division ratio N of the broadcasting station is registered is stored in the RAM 43.
Are stacked in order. Further, a counter CNTR indicates the number of broadcast stations that are stacked.

Then, when the above processing is performed for all the broadcasting stations registered in the frequency table FTBL,
At this time, since ADRS is set to 31 in step 117, the process of the CPU 41 proceeds from step 118 to step 121. In the state where the process proceeds to step 121, the RAM 43 stores P
The start address ADRS of the area in which the TY searched broadcast stations are registered in series is sequentially stacked, and the counter CNTR indicates the number of the stacked broadcast stations. Until the process proceeds to step 121, the PTY search is performed.

Then, in step 121, the second counter n is set to n = 1.
At 22, the n-th address ADRS stacked on the RAM 43 is extracted, and the frequency division ratio N registered here is extracted from the area indicated by the extracted address ADRS among the areas of the frequency table FTBL. The frequency dividing ratio N thus taken out is set in the variable frequency dividing circuit 22 through the port 45. Therefore, from this point, the RAM 43
The broadcast station having the division ratio N in the area indicated by the start address ADRS stacked on the n-th is selected.

Subsequently, in step 123, PS data indicating the broadcast station name is extracted from the RDS data D32 of the decoder 33, and this PS data is supplied to the controller 48, and all the addresses ADRS stacked in the RAM 43 are read. Supplied to the controller 48,
On the CD 51, for example, as shown in FIG. 6A, a result of the PTY search is displayed.

That is, the characters 51B indicating the station name of the broadcasting station selected in step 122 are displayed by the PS data supplied to the controller 48. In addition, based on the address ADRS, a character 51C indicating a page and an area of the memory 44 in which a station whose name is displayed by the character 51B is registered is displayed.
The page and area of the memory 44 indicated by the address ADRS stacked on the AM 43 are displayed by characters 51D. In this case, the display of the characters 51A to 51D is a blinking display.

Therefore, in this case, step 122,
By 123, the first broadcast station is selected from among the broadcast stations broadcasting the program contents desired by the listener, and information on the broadcast station is displayed.

Further, the processing of the CPU 41 is performed in step 12
After step 3, the process proceeds to step 124, and this step 124
In step, it is checked whether, for example, 4 seconds have elapsed since the execution of step 123. If not, the processing of the CPU 41 proceeds from step to step 125, and in this step 125, the key K
It is checked whether UP has been pressed, and if not, the process returns from step 125 to step 124. When the step 123 is executed, the key KUP is monitored for 4 seconds in steps 124 and 125.

If the key KUP is depressed during the four seconds, the process proceeds from step 125 to step 126, in which the counter n is set to "1".
Is incremented by one, and then in step 127 it is checked whether n ≦ CNTR, and n ≦ CNTR
In the case of, the processing is performed from step 127 to step 122.
Return to

Therefore, in this case, in step 122, the second broadcast station as a result of the PTY search is selected, and in step 123, the second broadcast station is displayed on the LCD 51 as shown in FIG. 5B, for example. Information about the broadcast station etc. is displayed blinking.

In step 127, n> CNTR
, The process proceeds from step 127 to step 121, where n = 1.

Therefore, within 4 seconds after the channel selection and display are performed in steps 122 and 123 (at this time,
When the key KUP is pressed when the key KUP is pressed, the broadcasting stations PTY searched in steps 111 to 117 are sequentially and repeatedly selected according to the address ADRS stacked in the RAM 43. .

In this way, if a certain broadcasting station is selected and the key KUP is not pressed, the process proceeds from step 124 to step 131 when four seconds have elapsed since step 123 was executed. At this time, a predetermined command is supplied from the CPU 41 to the controller 48, whereby the display on the LCD 51 is changed from the blinking display up to that point to a continuous display without changing the display content, for example, as shown in FIG. 5C. After that, the routine 100 is ended in a step 132.

Therefore, after the PTY search, the LCD 51
When the key KUP is pressed while is blinking, PTY
A broadcast station of a program desired by the listener can be further selected from among the broadcast stations obtained as a result of the search. For example, a PTY search for a broadcasting station that broadcasts sports,
Among them, a broadcast station broadcasting soccer can be selected. Then, after the channel selection, if the key KUP is left without being pressed, the channel selection state is determined.

Thus, the PTY search key KPS is pressed. A desired program content is selected by the key KUP or KDW. Press the PTY search key KPS again. Is performed, the frequency table FTBL of the memory 44 is
A PTY search is executed for the broadcasting stations registered in. Then, press the key KUP. With this operation, every time the key KUP is pressed, the broadcast station of the program content selected by the key can be further selected to select the broadcast station of the desired broadcast content.

<< Tuning of Preset Station >> This is a general tuning, and the frequency table of the memory 44 is selected.
This is a case where a broadcasting station registered in the FTBL is selected. And this is the page key KPG and the number keys KN0 to KN9.
Performed by

That is, each time the page key KPG is pressed, the page of the memory 44 is changed from A → B → C → A →
As shown in B →..., The pages are sequentially selected one by one and cyclically, and at this time, characters indicating the selected page are displayed on the LCD 51.

Then, when the page in which the division ratio N of the desired broadcast station is written is selected, the numeric keys KN0 to KN
Numeric key K of N9 corresponding to the desired broadcasting station
Press Ni (i = 0-9). In this case, as shown in FIG. 4, the numeric keys KN0 to KN9 correspond to the frequency table FTBL.
Of the selected page, the pressed numeric key K of the selected page is pressed.
From the area specified by Ni, the frequency division ratio N written in that area is read, and the read frequency division ratio N is set in the variable frequency dividing circuit 22 through the port 45.

Further, when the selected broadcasting station is transmitting RDS data, the RDS data D
32, the PS data indicating the name of the broadcasting station is extracted.
The S data is supplied to the controller 48, and the name of the broadcasting station is displayed on the LCD 51.

Therefore, the broadcast station registered in the memory 44 can be selected by the page key KPG and the numeric keys KN0 to KN9.

<< Direct Tuning >> This is the reception frequency f
This is a case where the number f12 is directly input to select the frequency f12. In this case, first, the direct key KDT is pressed, and then the number indicating the frequency f12 to be received is directly input from the numeric keys KN0 to KN9, and then the direct key KDT is pressed again. For example, if you want to receive 90 MHz, use the direct key KDT, “9” key KN9,
Press the "0" key KN0 and the direct key KDT in order.

When such a key operation is performed, the frequency f12 indicated by the numerical value input by the numeric keys KN0 to KN9 is converted into a frequency division ratio N, and the frequency division ratio N is set to the port 4
5 is set in the variable frequency dividing circuit 22.

Therefore, an arbitrary frequency f12 can be directly designated by using the direct key KDT and the numeric keys KN0 to KN9 to select a channel. Also, if the selected broadcasting station is R
When DS data is being transmitted, R
PS data indicating a broadcast station name is extracted from the DS data D32, and the PS data is supplied to the controller 48.
The LCD 51 displays the broadcast station name.

<< Scan Reception >> This is a case where the FM broadcast wave band is scanned, and if a broadcast wave signal is received, the reception is continued. Then, in this case, the up key KUP or the down key KDW is pressed.

Then, the frequency dividing ratio N of the variable frequency dividing circuit 22 becomes
The value at that time is incremented or decremented by “1” at a time.
Increase or decrease by Hz. When the broadcast wave signal S12 is received at a certain reception frequency f12, an intermediate frequency signal S15 is obtained, and the microcomputer 40 is notified by the detection signal S35 that the signal S12 has been received. Then, the scan at the reception frequency f12 is stopped at the reception frequency f12 at which the intermediate frequency signal S15 is obtained, and thereafter, the reception state at the frequency f12 at which the scan is stopped is continued.

When the reception frequency f12 reaches the upper limit or the lower limit, the scanning stops there.

Therefore, scan reception can be performed by the up key KUP or the down key KDW.

<< Preset of Receiving Frequency >> This is a case where an arbitrary receiving frequency f12 is registered in an arbitrary area of an arbitrary page of the frequency table FTBL.

In this case, the frequency f12 to be registered is selected by the above method. Further, a page to be registered is selected by a page key KPG. Note that the order of the channel selection and the selection of the page to be registered is arbitrary.

Then, the user presses the numeric key KNi (i = 0-9) while holding down the memory key KMM.

Then, the frequency division ratio N indicating the reception frequency f12 at this time is obtained from the frequency table FTBL of the RAM 44.
The selected page is written in the area corresponding to the pressed numeric key KNi.

Thus, the presetting of the reception frequency f12 is performed, and the broadcasting station of the preset frequency is hereinafter referred to as the “selection of the preset station”.
You can tune in. The “PTY search and tuning using the result” is executed for the preset broadcast station.

<< Other >> When the down key KDW is pressed in step 125, the counter n is decremented in step 126,
It is also possible to reverse the channel selection and display in 2, 123. Further, a dial and a rotary encoder may be used instead of the keys KUP and KDW, and the same processing as the case of the keys KUP and KDW may be performed by the encoder output. Further, a plurality of similar tuning keys may be provided separately from the numeric keys KN0 to KN9, and the broadcasting station of the page selected by the page key KPG may be selected by the tuning keys.

In step 115, the address
Instead of stacking the ADRS in the RAM 43, a flag is set in the area indicated by the address ADRS, and the reception frequency f12 (division ratio N) of the area in which the flag is set is set.
, The processing after step 121 can be executed. Furthermore, if the AM broadcast can be received and preset, for example, the reception band is F
A step of checking whether the broadcast is an M broadcast or an AM broadcast is provided.
6 can be skipped. Also, a character code indicating the name of the corresponding broadcasting station may be registered in the frequency table FTBL together with the frequency division ratio N, and the broadcasting station name may be displayed on the LCD 51 using the character code.

[0071]

According to the present invention, when a PTY search is performed, it is sufficient to perform the PTY search for a broadcasting station that normally receives signals. It is not necessary to perform a PTY search for a broadcasting station that does not receive signals normally. Noting that there is no
Since the PTY search is performed for the broadcast stations registered in the memory 44, the memory area required for the PTY search can be reduced even in an area where a large number of broadcast stations can be received.

Furthermore, even if a large number of broadcast stations are found as a result of the PTY search, all the broadcast stations can be sequentially received and the change of the broadcast station can be performed automatically. Thus, the listener is
When a Y search is instructed, the user only has to wait until a program having a desired content is selected, and the operation is extremely simple. Further, all the results of the PTY search can be obtained, and no search omission occurs. Further, a broadcast station having the same program content but a different frequency is not stored as a result of the PTY search, which is convenient.

Further, for example, as shown in FIG.
Since the search results can be displayed on the LCD 51, the usability is improved from this point, and the display can be easily realized. Also, since the PTY search is performed for the broadcasting stations registered in the memory 44, the FM
Compared to the case where PTY search is performed on the entire broadcast wave band, PTY
The search ends quickly, so that a desired program can be quickly selected.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an example of the present invention.

FIG. 2 is a flowchart showing a part of an example of the present invention.

FIG. 3 is a flowchart showing an example continued from FIG. 2;

FIG. 4 is a diagram showing an example of a data table.

FIG. 5 is a diagram illustrating an example of a display state.

FIG. 6 is a diagram illustrating an example of a display state.

[Explanation of symbols]

 Reference Signs List 12 antenna tuning circuit 14 mixer circuit 16 FM demodulation circuit 19 speaker 20 PLL 21 VCO 22 variable frequency dividing circuit 32 demodulation circuit 33 decoder circuit 35 detection circuit 40 microcomputer 41 CPU 42 ROM 43 RAM 44 non-volatile memory 48 display controller 51 LCD 100 Processing routine KUP to KN9 Operation keys

Claims (1)

(57) [Claims] 1. A receiving circuit of a synthesizer system, a memory for storing frequency data for selecting a broadcasting station in a predetermined area, and a demodulating circuit for demodulating RDS data from a broadcast wave signal received by the receiving circuit. A decoder circuit for performing decoding processing such as error correction on the RDS data output from the demodulation circuit; a page selection key; a plurality of tuning keys; and a content corresponding to the PTY code included in the RDS data. Selecting means for designating a program; and a control circuit for controlling channel selection. The control circuit, when operating the page selection key and the channel selection key, comprises: From the area specified by the page selection key and the channel selection key, frequency data stored in that area is extracted, and the extracted When the wave number data is supplied to the receiving circuit, a broadcast station having a frequency according to the frequency data is selected, and when the content of the program is designated by the selecting means, the frequency data stored in the memory is followed. Receiving the broadcast stations of the frequency in sequence, and at this reception, the PT included in the received RDS data.
A match between the Y code and the PTY code of the content of the program specified by the selection means is detected. When a match between the two PTY codes is detected, information on the reception frequency at this time is stored and stored in the memory. When the detection of the coincidence of the PTY codes is completed for all the broadcasting stations of the frequency according to the frequency data set, the reception frequencies indicated by the stored information are sequentially selected, and for each of the selections, Check the key input indicating whether or not the channel can be selected. If the key input denies the selection of the reception frequency at that time, the channel selection performed in the above order is continued. A receiver which is configured to continuously receive the reception frequency at that time when the selection of the reception frequency at that time is affirmed.