JPH0715364A - Receiver - Google Patents

Abstract

PURPOSE:To reduce the time till a desired RDS station is selected. CONSTITUTION:The receiver is provided with a demodulation circuit 32 demodulating identification data and frequency data from a broadcast wave signal received by a synthesizer system reception circuit 10, a detection circuit 35 detecting a reception level of the broadcast wave signal received by the reception circuit 10, a memory 44 storing the identification data and the frequency data, and a channel selection key KTN. The memory 44 stores the frequency data for each of the identification data. When the channel selection key KTN is operated, the reception state of the broadcast is sequentially checked as to the frequency represented by the frequency data for each of the frequency data for each of identification data in the order of the identification data. As a result of the check, when the broadcast is received by the frequency of the corresponding frequency data, the broadcast for the frequency is received.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to receivers utilizing RDS data.

[0002]

2. Description of the Related Art Some FM broadcasting stations in Europe provide RDS services. This RDS
The service adds RDS data to the original audio signal and broadcasts it. The RDS data is a collection of digital data related to broadcasting stations and programs, and the RDS data includes PI code ... Broadcasting station identification code (program identification code) PTY code ... Program content. Identification code PS data ・ ・ ・ Character data showing broadcasting station name AF list ・ ・ ・ Data such as a list of alternative frequencies is included.

Here, the PI code is 16-bit data having a country code, a program code, etc., and is transmitted at a rate of 11 times / second. The PTY code is a code indicating the content or type of program such as news, pops, education, sports, information, etc. in 5 bits. Further, the AF list is a list of frequencies of broadcasting stations broadcasting the same program as the currently received program, and has data for up to 25 stations.

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

Therefore, if this RDS data is used, even if the receiving state of a broadcasting station which is being received is deteriorated while moving, for example, in a car, another broadcast having a good receiving state in the same program is used. Stations can be selected easily or automatically. It is also possible to select only sports programs, for example.

[0006] In the following description, a broadcasting station that provides RDS service is called "RDS station".

[0007]

By the way, when selecting a channel using RDS data, for example, a PTY code, the channel can be selected as follows.

1. The reception frequency is sequentially scanned from the lower limit frequency to the upper limit frequency of the reception band. 2. If the broadcast is received during the scan in the above 1., RDS
Check from the data whether the broadcast is the intended broadcast. 3. As a result of the check in item 2 above, if the received broadcast is the desired broadcast, the scan is stopped and the tuning status of that broadcast is retained thereafter. 4. As a result of the check in section 2 above, if the received broadcast is not the intended broadcast, continue scanning.

However, when performing the above-mentioned channel selection,
For example, even if the check in item 2 can be done in 1 second for one frequency, it takes 20 seconds to find the target broadcast.
It takes 20 seconds to check the frequency of the station.

Moreover, in reality, there are cases where there is no corresponding broadcast, and in that case, it will be understood that the intended broadcast cannot be received until it takes a longer time.

The present invention is intended to solve the above problems.

[0012]

For this reason, in the present invention, when the reference numerals of the respective parts correspond to the embodiments described later, the identification data for identifying the broadcasting station and the frequency of the broadcasting station broadcasting the same program are provided. In a broadcast receiver adapted to transmit together with the main signal, the identification data and the frequency data from the synthesizer type receiving circuit 10 and the broadcast wave signal received by the receiving circuit 10. The demodulation circuit 32, the detection circuit 35 that detects the reception level of the broadcast wave signal received by the reception circuit 10, the memory 44 that holds the identification data and the frequency data, and the tuning key KTN. Holds frequency data for each identification data, and when the tuning key KTN is operated, this frequency is set in the order of the identification data and for each frequency data in each identification data. For the frequency indicated by the data, check the broadcast reception status in order, and as a result of this check,
When the broadcast can be received at the frequency of the corresponding frequency data, the reception at that frequency is performed.

[0013]

The frequency data stored in the memory 44 is
The identification data is sequentially used for channel selection, and when a broadcasting station suitable for reception is selected, its reception state is held.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a receiving circuit 10 is constructed in a synthesizer system, and a received signal of an antenna 11 is supplied to an antenna tuning circuit 12 of an electronic tuning system so that an FM broadcast wave signal of a target frequency f12 can be obtained. S12 is taken out.

This signal S12 is the high frequency amplifier 1
3 to the mixer circuit 14 and VC
A frequency f21 from O21 is, for example, f21 = f12 + f14 (1) f14 is an intermediate frequency, and an oscillation signal S21 of f14 = 10.7 MHz is taken out, and this signal S21 is supplied to the mixer circuit 14 as a local oscillation signal. Then, the signal S12 is frequency-converted into the intermediate frequency signal S14 having the intermediate frequency f14.

Then, the intermediate frequency signal S14 is supplied to the FM demodulation circuit 16 through the intermediate frequency amplifier 15 so that the audio signal (monaural signal or stereo composite signal) S17 and the modulated signal S31 modulated by the RDS data are obtained. The signal S17 taken out is supplied to the speaker 19 through the low-pass filter 17 and the low-frequency amplifier 18.

Further, the modulated signal S31 from the demodulation circuit 16
Is supplied to the demodulation circuit 32 through the bandpass filter 31 to demodulate the RDS data S32, and this RDS data S32 is supplied to the decoder circuit 33, and the decoder circuit 3
The RDS data S32 for which error correction has been performed is taken out from No. 3.

Further, the FM demodulation output from the demodulation circuit 16 and a part of the intermediate frequency signal S14 are supplied to the detection circuit 35, and a signal S35 indicating the reception level (reception electric field strength) of the reception signal S12 is taken out. The detection signal S35 is supplied to the A / D converter 36 so that the digital detection signal S35 becomes A
/ D converted.

At this time, the VCO 21 has the circuit 2
The PLL 20 is configured with 2 to 25. 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 comparison circuit 23. Further, an oscillation signal of a reference frequency, for example, a frequency of 50 kHz is taken out from the oscillation circuit 24, and this oscillation signal is supplied to the comparison circuit 23. Then, the comparison output is passed through the low pass filter 25 to VC.
It is supplied to O21 as its control voltage. Further, 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-divided signal from the frequency-dividing circuit 22 and the oscillating signal of the oscillating circuit 24 have the same frequency. Therefore, the frequency f21 of the oscillating signal S21 at this time is f21 = N × 50. [KHz] = N × 0.05 [MHz] (2), and from the equations (1) and (2), f12 = f21−f14 = N × 0.05-10.7 [MHz] (3).

Therefore, if the frequency division ratio N is changed by "1" between 1964 and 2374, the local oscillation frequency f21
However, since the frequency varies from 98.2 MHz to 118.7 MHz at 50 kHz intervals, the reception frequency f12 varies in the frequency band of 87.5 MHz to 108.0 MHz in frequency steps of 50 kHz and corresponding to the frequency division ratio N. It will be.

Further, 40 is a microcomputer for system control, 41 is its CPU, 42
Is a ROM in which various processing routines are written, 43
Is a work area RAM, 44 is a memory for storing various data, and these memories 42 to 44 are connected to the CPU 41 through a system bus 49.

In this case, the processing routine 100 shown in FIG. 2, for example, is written in the ROM 42. The memory 44 is a ROM capable of electrically erasing and writing data, or a RAM backed up by a battery (not shown),
That is, the memory 44 is a non-volatile memory, and can hold the written data even when the power is turned off. An example of data in the memory 44 will be described later.

Further, 51 is an output port, 52 and 53 are input ports, 54 is a key interface circuit, and these circuits 51 to 54 are the CPU 41 through the system bus 49.
It is connected to the. Then, the port 51 is the frequency divider 22
The frequency division ratio N is set in the frequency dividing circuit 22 by executing the program described later. Further, the detection signal S35 of the reception level from the A / D converter 36 is transmitted to the port 52
RDS from the decoder circuit 33
The data S32 is supplied to the port 53.

Further, the interface circuit 54 includes
Various operation keys such as a tuning key KTN and a PTY key KPTY are connected. Each of these operation keys is composed of a non-lock type push switch.

Further, 55 is a display controller,
Reference numeral 61 is a display element, and the display element 61 digitally displays a broadcasting station name, a reception frequency, and the like.

FIG. 3 shows the data table DTBL of the memory 44.
An example is shown. That is, this data table DTBL is
As shown in the vertical direction, data areas A1 to A32 for 32 stations
Have. Then, the data area A1 to A3 for that one station
Each of 2 has a PI code data area, a PTY code area, a PS data area, and an AF list area, as shown in the horizontal direction. Further, the area of the AF list is divided into areas AF1 to AF25, and each of the frequency data for 25 stations of the AF list can be accessed to these areas AF1 to AF25.

In the following description, it is assumed that RDS data is written in the data table DTBL as shown in FIG.

According to such a configuration, the CPU 41 causes the R
By executing the program of the OM 42, the following operation or processing is performed.

<< Update of data table DTBL >> Arbitrary RD
When the S station is being received, the audio signal S17 is supplied to the speaker 19 and the decoder circuit 33 outputs the R signal to the microcomputer 40 through the port 53 as described above.
The DS data S32 is supplied.

Now, as an RDS station, for example, "A
"BC station" is received, its RDS data S
By 32, the PTY code and AF list of "ABC station" in the data area A1 of the data table DTBL are updated.

Similarly, when another RDS station is selected,
The PTY code and AF list of the RDS station are updated. Also, when the RDS station is performing the EON service, the PT of the RDS station corresponding to the EON service is
Y code and AF list are also updated (EON service is a data service that is upward compatible with RDS service, and
A broadcasting station that is implementing the ON service transmits some of the RDS data of other stations related to the own station together with the RDS data of the own station).

However, in this case, one type of PI code (equal PI code) occupies one of the data areas A1 to A32 of the data table DTBL. That is, even if the frequencies are different, the same PI code is prevented from being registered in a plurality of data areas A1 to A32.

Thus, while the RDS station is receiving, the RD
The data table DTBL is constantly updated by the S service (and the EON service).

<< Channel Selection by PI Code >> Arbitrary RDS
When a station, for example, a "PQR station" having a frequency of 93 MHz in the data area A2 of the data table DTBL is received and the tuning key KTN is pressed, the processing of the routine 100 starts from step 101, and then At step 102, the data indicating the frequency of the currently received RDS station and the PI code are saved from the data area of the RAM 43 to the save area. In this case, the frequency and PI code of the “PQR station” are 93 MHz and “1234”, so these are saved.

Next, at step 103, among the PI codes of the data table DTBL, the RD currently received
The next largest PI code after the S station PI code is selected. In this case, the currently receiving RDS station is "PQR
Station ”and its PI code is“ 1234 ”.
The next largest PI code after the I code is the data area A4
This PI code “1256” is selected because it is “1256” of “LMN station”.

In step 103, when the PTY code is "31", the next largest PTY code is "0".
And In the following description, the data area A
Of 1 to A32, the data area in which the PI code selected in step 103 is written is the data area A
Let m. In the present example, since the corresponding data area is the data area A4, m = 4 and Am = A4.

Subsequently, in step 104, the PI code selection in step 103 is the data table.
It is checked whether all the PI codes written in the DTBL have been done.

The selection of the PI code in step 103 is the P code written in the data table DTBL.
When not executed for all the I-codes, the process proceeds from step 104 to step 105, and in this step 105, among the data areas A1 to A32 of the data table DTBL (P selected in step 103 is selected).
It is checked whether the AF list is written in the data area Am (of I code).

Then, when the AF list is written in the data area Am, the process proceeds from step 105 to step 111, and in this step 111,
Variable n that specifies areas AF1 to AF25 in the AF list
Is set to n = 1.

Next, in step 112, it is checked whether or not there is frequency data in the nth area AFn of the AF list of the data area Am. If there is, the process proceeds from step 112 to step 113. In step 113, the frequency data written therein is read from the area AFn checked in step 112. In this case, the PI code “1256” of the data area A4 is selected, and n = 1, so in step 113, the value 90 is obtained as the frequency data from the area AF1 of the data area A4.
MHz is read.

Then, in step 114, the frequency data read in step 113 is used for the port 5
1 is set in the PLL 22 through the reception frequency f12
Is set to the value indicated by the frequency data read from the area AFn. In the present case, f12 = 90 MHz is set.

Then, in step 115, the reception level detection signal S35 from the A / D converter 36 is taken into the microcomputer 40 through the port 52, and the reception level at the current reception frequency is checked.

When the reception level is less than the predetermined value, the process proceeds from step 115 to step 116, the variable n is incremented at step 116, and then at step 117, it is determined whether n ≦ 25. If it is checked and n ≦ 25, the process returns to step 112.

Therefore, in this case, since n = 2,
By the steps 112 to 114, the frequency 94 MHz written in the second area AF2 of the data area A4.
Will be selected.

Thus, thereafter, steps 112 to 117 are performed.
Is repeated, and the areas AF1 to
The frequency data written in the AF 25 is sequentially read, and the reception level at the read frequency is checked.

If there is no frequency data in the n-th area AFn in step 112, the process proceeds from step 112 to step 113 to step 115.
And skip to step 116.

If the reception level is equal to or higher than the predetermined value at a certain reception frequency f12, the process proceeds from step 115 to step 123, and this step 123 is performed.
Then, the routine 100 is ended.

Therefore, thereafter, the RDS station finally selected in step 114 is directly received.

In this way, when receiving an arbitrary RDS station, if the tuning key KTN is pressed, the R received until then is received.
Next to the DS station, an RDS station with a large PI code and a good reception state is selected.

However, even if n = 25, if an RDS station with a good reception state is not selected, step 116
At n = 26, this is step 11
7, the process proceeds from step 117 to step 103. In this step 103, as described above, the next largest PI code is selected, and thereafter, the process after step 104 is repeated. .

Therefore, when an RDS station in a good reception state cannot be received for a certain PI code, the next largest P
The I code is changed, and the reception status of the PI code is sequentially checked from n = 1 of the AF list. When an RDS station having a good reception state can be received, the reception state of that RDS station is held thereafter.

However, even if the reception status is checked for all the registered PI codes in the data areas A1 to A32 of the data table DTBL, if the RDS station in the good reception status cannot receive the data, the data table DT
The selection of PI code in BL is completed.

Then, this is detected in step 104, and the process proceeds from step 104 to step 121. In this step 121, in step 102, R
The data indicating the frequency of the previously received RDS station and the PI code saved in the save area of the AM 43 are RA
The data area is restored from the save area of M43. In the present case, the frequency of the "PQR station" is 93 MHz in step 102.
Since the PI code “1234” and the PI code “1234” have been saved from the data area of the RAM 43 to the save area, the frequency 93 MHz and the PI code “1234” are restored from the save area of the RAM 43 to the data area.

Then, in step 122, channel selection is performed according to the data returned in step 121, and channel selection is performed before the channel selection key KTN is pressed, that is, before this routine 100 is executed. The selected RDS station is selected again. Then, after that, in step 123, the routine 100 ends.

Therefore, if the RDS station suitable for reception is not found by pressing the tuning key KTN, the station returns to the RDS station that has been receiving until then.

In this way, when the tuning key KTN is pressed, tuning is performed in units of PI code, that is, PI
Even if there are RDS stations having the same code, from the listener's point of view, it is possible to select each RDS station having a different program. Also, the selected RDS station becomes a station with a good reception state.

Moreover, since the tuning process is performed only on the RDS stations which are registered in the data table DTBL in advance, the tuning can be performed quickly. Further, even when the RDS station suitable for reception cannot be selected, it can be known in a short time.

<< Channel Selection by PTY Code >> The above-described routine 100 is an example of selecting a station according to the PI code. The routine 200 shown in FIG. 4 is an example of selecting a station by the PTY code. Is.

That is, an arbitrary RDS station, for example, the frequency in the data area A2 of the data table DTBL is 93.
When receiving "PQR station" of MHz, PTY key K
When PTY is pressed, the processing of the routine 200 is step 201.
Then, in step 202, the data indicating the frequency of the currently received RDS station and the PI code are saved from the data area of the RAM 43 to the save area. In this case, the frequency and PI code of the “PQR station” are 93 MHz and “1234”, so these are saved.

Next, in step 203, it is checked whether or not the data table DTBL has another PI code with the same PTY code as the program currently being received. If there is a corresponding PI code, the process proceeds to step 20.
From 3 to step 204. In this case, RD being received
S station has PTY code "14" and PI code "123".
4 ”, but the PTY code is“ 1 ”in the data area A5.
Since there is another PI code “3456” in “4”, the process proceeds from step 203 to step 204.

Then, in step 204, the corresponding PI code is selected, and then the process proceeds to step 206. In this case, in step 204, "3456" is selected as the PI code, and the process proceeds to step 206. Note that when there are different PI codes even if the PTY codes are the same, the PI code is selected, for example, even if the PTY code indicates sports as a program, one RDS station is baseball, This is because the other RDS station may be like soccer.

If there is no corresponding PI code in step 203, the process proceeds from step 203 to step 205, and in step 205,
The next largest PT after the PTY code of the program currently being received
The PI code of the RDS station giving the Y code is selected. In this case, the PTY code is "14", so if the process proceeds to step 205, the PTY code is "15".
The RDS station whose PTY code is "15", that is, "UVW" in the data area A6 of the data table DTBL
The PI code “4321” of “station” is selected. And
Thereafter, the process proceeds to step 206.

In step 205, when the PTY code is "31", the next largest PTY code is "0".
And In the following description, the data area A
Of 1 to A32, the data area in which the PI code selected in step 204 or 205 is written,
Data area Am.

Subsequently, in step 206, the PI code selection in step 204 or 205
It is checked whether all the PI codes written in the data table DTBL have been executed.

If the PI code selection in step 204 or 205 is not performed for all the PI codes written in the data table DTBL, the process proceeds from step 206 to step 207.
Then, in step 207, the data table
Of the DTBL data areas A1 to A32, (step 20
It is checked whether or not the AF list is written in the data area Am of the PI code selected in 4 or 205.

Then, when the AF list is written in the data area Am, the process proceeds from step 207 to step 111, and thereafter, steps 111 to 117 are executed as in the case of << channel selection by PI code >>. RD of frequency in AF list of data area Am
Station S is selected in order.

If the reception frequency f12 is a certain frequency and the reception level is equal to or higher than the predetermined value, the process proceeds from step 115 to step 118. In step 118, it is determined whether the PTY key KPTY is pressed. If it is checked and not pressed, the process proceeds from step 118 to step 119. And
In this step 119, it is checked whether or not a predetermined time, for example, 5 seconds has elapsed since step 115 was executed after step 115. If 5 seconds has not elapsed, the process proceeds from step 119 to step 11
Return to 8.

Accordingly, steps 118 and 119 are repeated for 5 seconds after the RDS station having a predetermined reception level or higher is selected in step 114, and the PTY key KPTY is monitored.

Then, within the 5 seconds, the PTY key KPTY
When is not pressed, that is, when 5 seconds have elapsed, the process proceeds from step 219 to step 123, and the routine 200 is ended by this step 123.

Therefore, thereafter, the RDS station finally selected in step 114 is directly received.

Thus, when the PTY key KPTY is pressed while receiving an arbitrary broadcast, the RDS of the program of the same type as the broadcast received up to that time but different in content or another type of program is received. The station is selected.

However, if the PTY key KPTY is pressed while steps 218 and 219 are repeated, this is detected in step 218, and the processing is performed in step 2
The process proceeds from step 18 to step 203, and the next PI code is selected by step 204 or 205 as described above, and thereafter, the processing of step 206 and the subsequent steps is repeated to select the next RDS station.

Further, even if the reception status is checked for all the registered PI codes in the data areas A1 to A32 of the data table DTBL, if the RDS station in the good reception status cannot receive the data, the data table DTBL
The selection of the PI code in is completed.

Then, this is detected in step 206, and thereafter, in the same manner as << tuning by PI code >>, by steps 121 to 123, the RDS station which was selected before the PTY key KPTY was pressed is selected again. After that, this routine 200 ends. Therefore, PT
When the Y key KPTY is pressed but the target RDS station cannot be found, the RDS station which has been receiving until then is returned to.

In this way, when the PTY key KPTY is pressed, from the listener's point of view, it is possible to tune to each RDS station having a different program content. Also, the selected RDS station becomes a station with a good reception state.

<< Others >> In the above description, when the PI code or PTY code is changed, the PI code is changed so that the PI code becomes larger, but it may be changed so as to decrease. Also in routine 100,
Steps 218 and 219 may be provided following step 115. Further, in step 218, +
It is also possible to check the key and-key so that if the + key is pressed, it goes to the next RDS station, and if the-key is pressed, it goes back to the previous RDS station.

[0078]

According to the present invention, from the viewpoint of the listener,
Channel selection can be performed for each RDS station having a different program.
Furthermore, the selected RDS station becomes a station with a good reception state.

Moreover, since the tuning process is performed only on the RDS stations which are registered in the data table DTBL in advance, the tuning can be performed quickly. Further, even when the RDS station suitable for channel selection cannot be received, it can be known in a short time.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing an example of processing in the receiver of FIG.

FIG. 3 is a diagram showing an example of a data table in the receiver of FIG.

FIG. 4 is a flowchart showing an example of another process in the receiver of FIG.

[Explanation of symbols]

 10 reception circuit 12 antenna tuning circuit 14 mixer circuit 16 FM demodulation circuit 19 speaker 20 PLL 21 VCO 22 variable frequency divider circuit 32 demodulation circuit 33 decoder circuit 35 detection circuit 36 A / D converter 40 microcomputer 41 CPU 42 ROM 43 RAM 44 memory 100 Tuning routine 200 Tuning routine KTN Tuning key KPTY PTY key A1 to A32 Data area DTBL Data table

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

The tail, in the following description, among the data areas A1 to A32, was selected in step 103 PI
The data area in which the code is written is referred to as data area Am. In this example, the corresponding data area is
Since it is the data area A4, m = 4 and Am = A4
Is.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

That is, an arbitrary RDS station, for example, the frequency in the data area A2 of the data table DTBL is 93.
When receiving "PQR station" of MHz, PTY key K
When PTY is pressed, the processing of the routine 200 is step 201.
Then, in step 202, data indicating the frequency of the currently received RDS station , PI code
And the PTY code are saved from the data area of the RAM 43 to the save area. In the present case, the frequency of the "PQR station" , the PI code and the PTY code are 93 MHz , "123".
4 ” and“ 14 ”, but these are saved.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0063

[Correction method] Change

[Correction content]

If there is no corresponding PI code in step 203, the process proceeds from step 203 to step 205, and in step 205,
The next largest PT after the PTY code of the program currently being received
The PI code of the RDS station giving the Y code is selected. In this case, the PTY code is "14", so if the process proceeds to step 205, the PTY code is "15".
The RDS station whose PTY code is "15", that is, "UVW" in the data area A6 of the data table DTBL
The PI code “4321” of “station” is selected. And
Thereafter, the process proceeds to Step 20 4.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Change

[Correction content]

[0065] Subsequently, in step 206, the selection of PI codes definitive Step 20 4, a data table
It is checked whether all the PI codes written in the DTBL have been done.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0068

[Correction method] Change

[Correction content]

[0068] Then, when a certain frequency receiving frequency f12, the reception level is assumed to be equal to or greater than the predetermined value, the process proceeds from step 115 to step 2 18, in the step 2 18, or PTY key KPTY is pressed is checked whether, when not depressed, the process proceeds from step 2 18 step 2 19. And
In step 2 19, next to the step 2 18 is given since the execution time of step 115, checks whether example 5 seconds have elapsed, the time has not elapsed 5 seconds, the process from Step 2 19 Step 2 1
Return to 8.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0069

[Correction method] Change

[Correction content]

[0069] Thus, a predetermined reception level or higher RDS stations since the channel selection in step 114, for 5 seconds, Step 2 18, 2 19 are repeated, so that the PTY key KPTY is monitored.

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (4)

[Claims] 1. Identification data for identifying a broadcasting station and frequency data indicating a frequency of a broadcasting station broadcasting the same program,
In a broadcast receiver adapted to transmit together with a main signal, a synthesizer type reception circuit, a demodulation circuit for demodulating the identification data and the frequency data from a broadcast wave signal received by the reception circuit, and the reception A detection circuit for detecting the reception level of the broadcast wave signal received by the circuit; a memory for holding the identification data and the frequency data; and a tuning key. Holds frequency data, and when the tuning key is operated, in the order of identification data,
And, for each frequency data in each identification data,
A receiver that sequentially checks the broadcast reception status for the frequency indicated by this frequency data, and if the result of this check is that the broadcast can be received at the frequency of the corresponding frequency data, reception is performed at that frequency. 2. Identification data for identifying a broadcasting station, program data indicating a type of program, and frequency data indicating a frequency of a broadcasting station broadcasting the same program are transmitted together with a main signal. In a broadcast receiver, a synthesizer type reception circuit, a demodulation circuit for demodulating the identification data and the frequency data from the broadcast wave signal received by the reception circuit, and reception of the broadcast wave signal received by the reception circuit It has a detection circuit for detecting a level, a memory for holding the identification data and the frequency data, and a tuning key. The memory holds the frequency data for each identification data, and the tuning key Is operated, for each of the program data and for each of the frequency data in each of the identification data, regarding the frequency indicated by the frequency data. Sequentially checks the reception state of the broadcast, the result of this check, when it receives the broadcast frequency of the corresponding frequency data, receiver to perform the reception at that frequency. 3. The receiver according to claim 1, wherein the identification data is a PI code of an RDS service, and the frequency data is an AF list of the RDS service. 4. The receiver according to claim 2, wherein the identification data is an RDS service PI code, the frequency data is an RDS service AF list, and the program data is an RDS service PTY code. Is a receiver.