KR20030016511A - auto search device of audio frequency for vehicle - Google Patents

Abstract

According to the present invention, the driver can select a good quality frequency by selecting a broadcaster who wants to listen in any area, and when the user enters another area while listening to a broadcast program, the driver searches for and executes an already set broadcast frequency in another area. Audio frequency automatic search device that searches and tracks broadcasting stations or listening frequencies stored in the memory and provides them to car audio when receiving rate drops, so that the driver can always hear a certain quality sound. will be.

Description

Automatic search device of audio frequency for vehicle}

The present invention relates to an audio frequency automatic search apparatus, and more specifically, the driver can select a good quality frequency by selecting a broadcaster who wants to listen in any region, and when entering a different region while listening to a broadcast program, the broadcasting is already set up in another region. If the reception rate of the received broadcasting frequency is reduced, the search and tracking of the broadcasting station or listening frequency stored in the memory is searched or provided to the car audio so that the driver always has a constant sound quality. The present invention relates to an audio frequency automatic search device that can listen to the sound.

In general, the car is equipped with audio as a standard for providing a comfortable driving environment and information to the driver and passengers.However, the driver can use the audio installed in the car to make room in the car's interior space and road traffic conditions. Allows you to listen to information about

Such a conventional conventional car is such that a mobile unit equipped with a radio continuously listens to the broadcast of a broadcasting station which is currently being received even if the listening area is changed, and the channel of the radio, which is Korean Patent Application Publication No. 95-13081 (95.5.17) Automatic holding device ", as shown in " a radio receiver 2 for receiving and amplifying high frequency induced by the antenna, and a local oscillating part for generating and outputting a local oscillation frequency in order to convert the output of the radio receiver 2 into an intermediate frequency. 3) and an audio processor 4 for demodulating and outputting the original audio signal through a speaker after obtaining and amplifying a difference between the output of the wireless receiver 2 and the output of the local oscillator 3 and amplifying the original audio signal. The carrier detecting unit 5 which measures a current value and detects a carrier, the channel information unit 7 which stores all local frequencies of each broadcasting station, and the moving object Outside the region, the audio output circuit is provided with a control unit 6 which converts the local oscillation frequency stored in the channel information unit 7 to detect the local broadcasting frequency corresponding to the current channel and automatically changes the frequency. Doing.

In the conventional vehicle configured as described above, when the listening area is changed while moving, the frequency of the radio broadcasting program currently being listened is changed according to each local frequency stored in the channel information unit 7, so that the driver can enter the same area even if the driver enters another area. To listen to the broadcast.

However, in the conventional vehicle, when the driver enters another area, the channel information unit 7 storing the radio broadcast frequency currently being listened to is changed to the set local frequency so that the driver can listen to the same broadcast program. (7) makes it possible to receive radio waves at fixed frequencies when entering other areas, so that radio broadcasting is smoothly when the characteristics of the area are low, such as on the highways or main roads bordering each area, or when the broadcast signal is small. I have a problem that I can't listen to the program.

The present invention is to solve such a conventional problem, its purpose is to input the respective broadcaster's region or management corresponding frequency in the car audio and to automatically search or track the same radio broadcast to automatically change the reception rate is good By continuously listening to the broadcast and automatically changing and receiving the radio frequency, each broadcasting company can make a local change to the boundary area of each region so that the driver can select a frequency or change the frequency while driving. The accident can be prevented in advance, and the driver traveling to the border area can receive the desired broadcast.

1 is a block diagram of a conventional audio frequency automatic search apparatus.

2 is a block diagram of another region audio frequency search apparatus according to an embodiment of the present invention.

Code descriptions for the main parts of the drawings

2; athlete free play 3; local oscillator

4; audio processing unit 5; carrier detection unit

6; control unit 7; channel information unit

10; unbridled bride 20; car audio

30; sound detection unit 40; listening frequency unit

50; frequency selection control unit 60; memory unit

70; broadcasting company selection unit

Hereinafter, the technical configuration of the present invention with reference to the accompanying drawings in detail.

2 is a block diagram of another region audio frequency search apparatus according to an embodiment of the present invention.

The present invention relates to an apparatus for converting a stored local broadcast signal into a predetermined signal so that the broadcast signal of another region can be received smoothly, and converting the received broadcast signal into an appropriate signal. A radio receiver 10 for receiving an over-the-air broadcast frequency signal, and the broadcast frequency received by the radio receiver 10 through the internal circuit to the broadcast signal to the audio amplification means to output the sound in the audio amplification means Sound detection unit 30 for detecting the sound state of the broadcast frequency output from the amplifying means has a configuration that is connected.

The car audio 20 is connected to a listening frequency unit 40 connected to an internal circuit so as to select and provide a local broadcasting frequency again when a local broadcasting frequency selected by a user exceeds a local boundary while driving.

The listening frequency unit 40 identifies a broadcaster with respect to the broadcast frequency being listened to, and then selects and outputs a broadcaster broadcasting frequency in another region, a broadcaster selecting unit 70, a broadcaster selecting unit 60, and a listening frequency unit 40. Memory unit 60 is connected to store the listening frequency of the broadcaster for each region that can be selected) and to modify or add new information to the input terminal.

In addition, according to the acoustic state detected by the sound detection unit 30, the listening frequency unit 40, the broadcaster selection unit 70 and the memory unit 60 exchanges signal information with each other to the driver who was driving the boundary area. It has a configuration that the frequency selection control unit 50 for searching for a good quality frequency so as to listen to a good sound broadcast.

Referring to the effects of the present invention configured in this way in detail as follows.

The present invention allows to listen to a broadcast that is continuously listening after searching, tracking, and converting a stored local broadcast signal so that a broadcast signal of another region can be received smoothly. As shown in FIG. 2, the driver is operating while listening to a broadcast. The broadcast reception rate of the car audio 20 decreases due to different broadcasting frequency bands in different regions, that is, regions.

In order to improve the broadcasting reception rate, the present invention outputs the sound signal output from the car audio 20 to the frequency selection controller 50 by detecting the degree of noise included in the sound signal.

The frequency selection controller 50 determines the reception stable state or the reception unstable state from the degree of noise of the sound currently output from the car audio 20, and then determines the broadcast frequency output from the car audio 20 when it is determined that the reception is unsafe. The broadcaster selector 70 outputs the broadcaster to confirm the broadcaster. At this time, the user can check the name of the broadcaster running in the car audio 20 and received through the display means.

In addition, the frequency selection controller 50 checks the data of the listening frequency unit 40 so as to convert the listening frequency of the selected broadcaster to a listening frequency corresponding to another region and then outputs the audio data 20 to convert the listening frequency. The frequency conversion signal is output so that the user can listen to the same listening broadcast.

In addition, the frequency selection controller 50 converts the broadcaster or broadcast frequency mainly used by the user according to the region and converts it to a local listening frequency based on the broadcast frequency of the broadcaster or listening to provide it to the car radio.

Therefore, the car audio 20 searches for the memory unit 60 storing the frequency of a specific broadcaster or the broadcaster selecting unit 70 for selecting a general broadcaster and a high quality frequency when driving in another region having a different broadcasting frequency. Since the high-quality broadcast frequency input through the frequency selection control unit 50 is executed, even if the broadcaster's frequency is driving in another area, the driver automatically searches for the specific broadcast frequency selected by the driver.

According to the present invention, the driver can select a good quality frequency by selecting a broadcaster who wants to listen in any area, and when the user enters another area while listening to a broadcast program, the driver searches for and executes an already set broadcasting frequency in another area. When the reception rate of the broadcast frequency drops, the broadcaster or listening frequency stored in the memory is searched or tracked based on the received broadcast frequency or broadcaster and provided to the car audio so that the driver can always hear a certain quality sound. .

Claims (1)

A radio receiver 10 mounted on a vehicle and receiving an air wave broadcasting frequency signal, and a broadcast signal received from the radio receiver 10 are output from the amplification means in the car audio 20 so that the broadcast signal received from the radio receiver 10 can be output to the sound amplifier. A sound detection unit 30 for detecting a sound state of the broadcasting frequency to be received, a listening frequency unit 40 connected to an internal circuit of the car audio 20, and selectively providing a broadcasting frequency to be received by the user; When the frequency selected by the listening frequency unit 40 enters a different boundary area, a broadcasting station selecting unit 70 which provides a listening frequency corresponding to the broadcasting station of the listening frequency that is being listened to automatically, and the readings by the broadcasting station selecting unit 70 Listening frequency according to the sound state detected by the memory unit 60 and the sound detection unit 30, the corresponding frequency information related to the broadcaster of each region for the listening frequency Audio frequency automatic search device that is connected to the frequency selection control unit 50 for automatically searching the broadcast frequency selected by the unit 40 and the broadcast station selector 70 with a high-quality broadcaster frequency corresponding to the listening area.