KR20060025416A - Method for setting radio channel in a radio system for a vehicle - Google Patents

Abstract

The present invention relates to a method for automatically setting a channel of a vehicle radio system configured to tune a broadcast wave of various frequencies received by an antenna to a tuner, amplify the amplifier, and output the same through a speaker. Process; A second step of sequentially assigning channel numbers to the broadcast frequencies tuned by the tuner and storing them in a memory together with voice information of the broadcast frequencies; A third step of determining whether a broadcast frequency having the same voice information as the voice information of the broadcast frequency newly tuned by the tuner is stored in the memory; A fourth step of comparing reception sensitivity of a newly tuned broadcast frequency with a broadcast frequency having the same voice information, if it is stored in the memory as a result of the determination; And a fifth process of selecting a broadcasting frequency having a relatively good reception sensitivity as a result of the comparison and storing the broadcast frequency together with the corresponding channel number. Accordingly, it is possible to prevent the heterogeneous frequencies of the same broadcast from being selected when performing the automatic frequency searching function of the vehicle radio system.

Vehicle, radio, auto, channel, settings

Description

Method for setting radio channel in a radio system for a vehicle}

1 is a block diagram schematically illustrating a general radio;

2 is a block diagram of a vehicle radio system according to the present invention;

3 is a flow chart of a channel automatic setting method of a radio system according to the present invention;

4 and 5 are flowcharts of a method for selecting channels in order of low frequency to high frequency in a radio system according to the present invention;

<Description of Symbols for Major Parts of Drawings>

2: receiving unit 3: tuning unit

4: demodulator 5: speaker

6: reception sensitivity comparison unit 7: memory

8: control unit 9: voice information comparison unit

The present invention relates to a vehicle radio system, and more particularly, to a method for automatically setting a channel of a vehicle radio system having a function of automatically setting a channel by searching for a radio frequency.

In a typical vehicle, an audio system is installed to receive a driver's comfortable driving state and various information. The audio system is equipped with a radio for listening to various information and music transmitted from a broadcasting station, and a cassette tape recorder or CD player for listening to a cassette tape or CD.

The radio receives a radio wave transmitted from a broadcasting station through an antenna and listens to various information.

1 is a block diagram schematically illustrating a general radio. As shown in FIG. 1, a receiver 102 for receiving radio waves transmitted from a broadcasting station, a tuning unit 103 for selecting only radio waves transmitted from a broadcast station to be listened to, and a tuning unit 103 are selected. A demodulator 104 for separating the carrier signal for transmitting the information data from the signal transmitted by the desired broadcast station by the desired signal, an amplifier 105 for amplifying the information data filtered by the demodulator 104, and an amplification unit. And a speaker 106 for converting the signal amplified by 105 into an audio signal and outputting the same.

The radio made as described above receives the signal radiated from the air by the receiver 102 and sets the channel of the broadcasting station that the user wants to listen to in the tuning unit 103 to receive only the signal transmitted by the set frequency to the carrier. By separating the received information data and amplifying only the separated signal and outputting the same to the speaker 106, the user can listen to the information data transmitted from the broadcasting station.                         

However, in the conventional vehicle, the radio frequency can be automatically searched for 6 channels using the BSM (Best Station Memory) function. When the same broadcast uses 2 frequencies, the same broadcast is selected for 2 channels among the 6 channels. Can happen. For example, if 2 channels of A broadcast frequency are 90.1MHz and 95.2MHz, if you set it to BSM automatically, 1 channel is 89.1MHz, 2 channels are 90.1MHz, 3 channels are 92.5MHz, 4 channels are 94.6MHz, 5 channels are set. 95.2 MHz and 6 channels are selected as 98.9 MHz. Of these selected channels, 2 and 5 channels are the same broadcast of A broadcaster. As described above, since the frequencies of the same broadcast are overlapped with each other, the driver has to repeatedly perform the automatic search until another broadcast is set in each of the six channels.

Accordingly, the present invention has been made to solve the above problems, to provide a method for automatically setting a channel of a vehicle radio system to prevent the heterogeneous frequency of the same broadcast is selected when the frequency automatic search function of the vehicle radio system is performed. There is this.

According to an aspect of the present invention, there is provided a channel automatic setting method for a vehicle radio system configured to tune a broadcast wave of various frequencies received from an antenna to a tuner, amplify the amplifier, and output the same through a speaker. A first process of tuning a broadcast frequency in the system; A second step of sequentially assigning channel numbers to the broadcast frequencies tuned by the tuner and storing them in a memory together with voice information of the broadcast frequencies; A third step of determining whether a broadcast frequency having the same voice information as the voice information of the broadcast frequency newly tuned by the tuner is stored in the memory; A fourth step of comparing reception sensitivity of a newly tuned broadcast frequency with a broadcast frequency having the same voice information, if it is stored in the memory as a result of the determination; As a result of the comparison, a fifth process of selecting a broadcasting frequency having a relatively good reception sensitivity and storing the same with the corresponding channel number is achieved.

The method may further include a sixth process of resetting the channel numbers by arranging the broadcast frequencies stored in the memory in the order of low frequency to high frequency, and assigning the channel numbers sequentially increasing in the order of the broadcast frequencies.

The fourth step may further include setting a channel number newly assigned to the tuned broadcast frequency if the same broadcast information as the voice information of the broadcast frequency newly tuned by the tuner is not stored in the memory. desirable.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a vehicle radio system according to the present invention. As shown in FIG. 2, a receiver 2 for receiving a high frequency signal through an antenna, a tuning unit 3 for tuning a frequency, and a signal of a frequency tuned in the tuning unit 3 are demodulated into a voice signal. A demodulator 4, a speaker 5 for outputting a voice signal, a voice information comparator 9 for comparing the demodulated voice information 4, and a frequency tuned by the tuner 3 A control section 8 for storing the received sensitivity comparison section 6, the memory 7, and the tuner 3, which compares the reception sensitivities, by assigning channel numbers in descending order of frequency and storing them in the memory 7; It consists of.

The apparatus further includes an input button (not shown) for performing a BSM function.

When the input button for performing the BSM function is selected, the control unit 8 controls the tuning unit 3 to tune the frequency, and the voice information of the predetermined frequency currently tuned by the tuning unit 3 is stored in the memory 7. If there is a frequency having the same voice information as compared with the voice information of the stored frequencies, the reception sensitivity of the frequency having the same voice information as the tuned frequency is compared by the reception sensitivity comparison section 6, and the reception sensitivity is a relatively good frequency To the channel number. Then, the controller 8 sorts the frequencies of the channel number set as described above in order from the low frequency to the high frequency, and re-applies the channel number to register it in the memory 7.

Here, since the specific configuration of the reception sensitivity comparison unit 6 is a known technique, detailed description thereof will be omitted.

3 is a flowchart of a method for automatically setting a channel of a radio system according to the present invention. As shown in FIG. 3, in step S1, the tuning unit 3 is controlled to search from the lowest frequency. In step S3, the address number of the memory 7 is set. In step S5 to increase the frequency of the tuning unit (3). In step S7, the reception sensitivity comparison section 6 checks whether the broadcast tuned by the tuning section 3 is clear. In step S9, it is determined whether the same broadcast is stored in addresses 1 to (N-1). If the same broadcast is not stored, the frequency and the voice information of the broadcast tuned to the N address of the memory 7 are stored in step S11. In step S13, the address number of the memory 7 is increased by '1'. In step S15, it is checked whether all the addresses of the memory 7 are stored and whether all channels are tuned. If it is determined in step S15 that all addresses are stored, in step S17, the controller 8 stores the addresses in the memory 7 in a sorted order from low frequency to high frequency.

On the other hand, if it is determined in step S9 that the same broadcast as the currently tuned broadcast is present at the addresses 1 to (N-1), the controller 8 receives the currently tuned broadcast in step S10 than the same broadcast stored in the memory 7. Check if the sensitivity is good. As a result of the determination in step S10, if the currently tuned in broadcast is clearer, in step S12, the currently tuned broadcast frequency is stored in the address of the same broadcast stored in the memory 7. However, if the same broadcast stored in the memory 7 is clearer as a result of the determination in step S10, the frequency of the same broadcast is maintained in step S14, and the process returns to step S5.

4 and 5 are flowcharts of a method for setting channels in order of low frequency to high frequency in a radio system according to the present invention. Before describing the drawings, the frequencies of broadcaster A are 89.1MHz and 95.2MHz (sharp broadcast), the broadcaster B's frequencies are 92.1MHz (sharp broadcast) and 97.6MHz, and the broadcaster C's frequencies are 94.2MHz and 102.4 (clear). Broadcasting), the frequency of broadcaster D is 87.7MHz, the frequency of broadcaster E is 93.6MHz, and the frequency of broadcaster F is 107.7MHz.

As shown in Figure 4, in step S1, the driver selects the BSM (Best Station Memory) function of the radio system. In step S2, the lowest frequency, 87.7 MHz, is selected as channel 1. In step S3, channel 2 is selected as 89.1 MHz, which is higher than 87.7 MHz. In operation S4, the voice information of the channel 1 and the channel 2 is compared by the voice information comparison unit 9, and if not the same broadcast, 89.1 MHz is registered as the channel 2. In step S5, 92.1 MHz, a frequency higher than 89.1 MHz, is temporarily selected as channel 3. In step S6, if the same broadcast is not compared by comparing the voice information of channels 1,2 and 3, 92.1 MHz is registered as channel 3. In step S7, a frequency higher than 92.1 MHz is selected as channel 4. In step S8, if the same broadcast is not compared by comparing voice information of channels 1,2, 3, and 4, 93.6 MHz is registered as channel 4. In step S9, the frequency higher than 93.6 MHz is set to channel 5. In operation S10, if the same broadcast is not performed by comparing voice information of channels 1,2,3,4,5, 94.2 MHz is registered as channel 5. In step S11, the frequency 95.2MHz higher than 94.2MHz is selected as the channel 6. In step S12, the voice information of the channels 1,2,3,4,5,6 is compared to determine whether there is the same broadcast.

As a result of the determination, if the currently received frequency is the same broadcast as that of channel 2, as shown in FIG. 5, the reception sensitivity comparison unit 6 compares channel 2 with the currently received frequency 95.2 MHz in step S13. Reset the high frequency 95.2 MHz to channel 2. In step S14, the frequency is scanned again and 97.6MHz is selected as the channel 6. In step S15, the voice information of the channels 1,2,3,4,5,6 is compared to determine whether there is the same broadcast. As a result of the determination, if the currently received frequency is the same broadcast as that of channel 3, in step S16, channel 3 and the currently received frequency of 97.6 MHz are compared by the reception sensitivity comparator 6 so that the frequency of channel 3 having a relatively good reception sensitivity is 92.1 MHz. Keep it. In step S17, the frequency is scanned again to select 102.4MHz as channel 6. In step S18, the voice information of the channels 1,2,3,4,5,6 is compared to determine whether there is the same broadcast. As a result of the determination, if the currently received frequency is the same broadcast as that of channel 5, in step S19, the channel 5 and the currently received frequency 102.4 MHz are compared by the reception sensitivity comparing unit 6 to convert the frequency 102.4 MHz, which has a relatively good reception sensitivity, to channel 5. Reset. In step S20, scan the frequency again and select 107.7MHz as the channel 6. In operation S21, the voice information of the channels 1,2,3,4,5,6 is compared to compare whether the same broadcast exists. If there is no broadcast, 107.7 MHz is registered as the channel 6, thereby completing the selection of six channels. The channel numbers are reset by arranging the frequencies of the six channels set in step S22 from low to high frequency in order. That is, the last set channel 1 is 87.7 MHz, channel 2 is 92.1 MHz, channel 3 is 93.6 MHz, channel 4 is 95.2 MHz, channel 5 is 102.4 MHz, and channel 6 is 107.7 MHz.

According to this configuration, when the radio of the vehicle is automatically searched and the channel is set, the stations are tuned in the order of low frequency, the channel numbers are assigned to the tuned broadcasts, and the voice information of the tuned broadcasts is stored in the memory. If the same broadcasting frequency as the voice information of the broadcasted broadcast is stored in the memory, a broadcast having good reception sensitivity among the currently tuned broadcast and the broadcast stored in the memory is selected and registered as the corresponding channel, so that the same broadcast using heterogeneous frequencies is duplicated and set. Can be prevented.

As described above, according to the present invention, it is possible to prevent the heterogeneous frequencies of the same broadcast from being selected when the frequency automatic search function of the vehicle radio system is performed.

Claims (3)

In the channel automatic setting method of a vehicle radio system configured to tune the broadcast wave received at the antenna of various frequencies with a tuner, amplified by the amplifier and output through the speaker, A first step of tuning a broadcast frequency in the tuner; A second step of sequentially assigning channel numbers to the broadcast frequencies tuned by the tuner and storing them in a memory together with voice information of the broadcast frequencies; A third step of determining whether a broadcast frequency having the same voice information as the voice information of the broadcast frequency newly tuned by the tuner is stored in the memory; A fourth step of comparing reception sensitivity of a newly tuned broadcast frequency with a broadcast frequency having the same voice information, if it is stored in the memory as a result of the determination; And a fifth process of selecting a broadcast frequency having a relatively high reception sensitivity as a result of the comparison and storing the broadcast frequency with a corresponding channel number. The method of claim 1, And a sixth step of resetting the channel number by arranging the broadcast frequencies stored in the memory in the order of the low frequency to the high frequency. The method of claim 1, The fourth step may further include setting a channel number newly assigned to the tuned broadcast frequency if the same broadcast information as the voice information of the broadcast frequency newly tuned by the tuner is not stored in the memory. A method for automatically setting channels in a vehicle radio system.

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