KR20050056569A - Car audio system for changing radio receiving frequency according to region and method thereof - Google Patents

Abstract

The present invention relates to a radio channel automatic tuning apparatus in a vehicle using GPS. That is, in the present invention, when listening to a radio while moving between vehicles having different radio broadcast channel frequencies by vehicle, the radio broadcast channel frequency of each region is stored in advance in the in-vehicle radio receiver and the same radio broadcast in the corresponding region when the vehicle moves. By automatically switching to the frequency of the channel, it is possible for the driver moving between vehicles to the area automatically and stably receive the same radio broadcast signal stably without a separate frequency adjustment operation, thereby greatly increasing user convenience.

Description

Car audio device and method having automatic switching function of radio broadcasting channel frequency by region {CAR AUDIO SYSTEM FOR CHANGING RADIO RECEIVING FREQUENCY ACCORDING TO REGION AND METHOD THEREOF}

The present invention relates to a radio channel automatic tuning device, and more particularly, to a radio channel automatic tuning device in a vehicle using a GPS (Global Positioning System).

Typically, the vehicle is equipped with most radio devices that enable the driver to listen to the radio broadcast while the vehicle is running. The radio receiver receives a broadcast signal through an antenna installed outside the vehicle and outputs a corresponding radio broadcast signal through a speaker so that the driver of the vehicle can listen to the tuned radio broadcast.

However, the radio receiver of the vehicle stably provides a radio broadcast of a channel tuned by the driver of the vehicle when the vehicle does not leave a certain area, but the vehicle travels a long distance to operate between radio stations having different radio channels. In this case, in order to receive the same radio broadcast because the radio channel frequencies are different for each region, the driver has to set radio channel frequencies that are differently set for each region.

That is, for example, as shown in Figure 1 showing the radio broadcasting channel frequency for each region, KBS1 FM broadcasting is transmitted at 90MHz in Seoul / Gyeonggi area, 105MHz is transmitted in Gangwon / Yeongdong area, Kangwon in Seoul area The driver of the vehicle moving to the area had to adjust the tuning frequency back to 105 MHz in order to listen to the same KBS1 FM broadcast.

Accordingly, an object of the present invention is to provide a vehicle audio apparatus and method having an automatic regional broadcasting channel frequency automatic telephone function, which enables a driver moving between regions to continuously receive the same radio broadcasting signal without a separate frequency adjustment operation. In providing.

The present invention for achieving the above object, the vehicle audio device having a radio frequency automatic switching function according to the region, GPS module for providing a current position information of the moving vehicle to determine whether the vehicle is moved between regions, the driver The tuner unit for receiving the frequency of the radio broadcast channel tuned by the memory unit, the memory unit for storing the radio broadcast channel frequency information for each region, and the radio broadcast reception frequency of the tuner unit when determining the movement between the region via the GPS module And a controller for automatically switching to the same radio broadcast channel frequency of a corresponding region according to the location information of the vehicle stored in the memory unit and controlling the same radio broadcast signal to be received.

In another aspect, the present invention provides a method for automatically switching to a radio broadcasting channel frequency for each region using a GPS in an audio device of a vehicle, comprising the steps of: (a) receiving and outputting a radio broadcasting signal of a channel tuned frequency by a vehicle driver; (C) checking whether the vehicle moves to an area in which the radio broadcasting channel frequency is set differently; and (c) if the vehicle moves to an area in which the radio broadcasting channel frequency is different, the same radio broadcasting channel frequency of the corresponding area is determined. And (d) switching the reception frequency to the same radio broadcast channel frequency of the searched corresponding region so as to be able to receive the same radio broadcast signal.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

2 is a block diagram of a radio receiver 200 of a vehicle using GPS according to an embodiment of the present invention. Referring to FIG. 1,

The tuner 202 selects and receives a broadcast signal of a specific frequency from among radio broadcast signals of each channel received by the antenna AT under predetermined control from the tuner controller 208. The amplifier 204 amplifies the channel tuned broadcast signal received and applied from the tuner 202 and outputs the audible sound through the speaker 206.

The memory unit 218 stores the operation program of the control unit 210, stores the frequency of each radio channel as shown in FIG. 1 according to an embodiment of the present invention, and also the operation program of the control unit 210. Temporarily store data generated by execution. The key input unit 216 includes a plurality of function keys, and generates key data for the corresponding key when the user inputs the key to the controller 210.

The GPS module 214 receives and provides location information of a vehicle with respect to a current radio listening area through transmission and reception with a satellite under the control of the controller 210. The display unit 212 displays various states of the radio receiver installed in the vehicle under the control of the controller 210.

The control unit 210 controls the overall operation of the radio device, and controls the tuner control unit 208 composed of a phase locked loop (PLL) to control the radio broadcast signal channel selection operation of the tuner unit 202. In addition, when the vehicle moves between regions having different radio broadcast channel frequencies according to an embodiment of the present invention, the position of the vehicle is checked through the GPS module 214, and the region-specific frequency information of the radio channel stored in the memory unit 218 is determined. It automatically switches to the radio channel frequency of the area where the vehicle is located.

3 is a flowchart illustrating a control flow of automatic switching of radio channels for each region in an in-vehicle radio receiver using GPS according to an exemplary embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1, 2, and 3.

First, when the driver of the vehicle turns on the radio receiver in the vehicle to listen to the radio broadcast while driving, and then tunes in a radio channel to be listened to, the control unit 210 of the radio apparatus responds thereto (S300). In step S302, the radio channel tuned by the driver is input, and in step S304, the radio broadcast signal of the channel tuned by the driver is received and output through the speaker.

In this case, the radio broadcast of the tuned channel frequency is impossible to receive when the vehicle moves to another region where frequencies are set differently as shown in FIG. 1.

Therefore, the controller 210 checks whether the vehicle moves between regions in which the frequencies are set differently through the GPS module in step S306, and if it is determined that the vehicle moves to the region in which the frequencies are set differently, in step S308. Proceed to check the area where the vehicle is located through the GPS module 214, and searches the same radio broadcast reception frequency of the area with reference to the memory unit 218.

Subsequently, the control unit 210 automatically proceeds to step S310 to automatically convert the frequency of the currently tuned radio channel to the searched radio channel frequency, and then, in step S312, receives a broadcast signal of the same radio channel converted to the frequency. By outputting through the speaker, the driver can listen to the same radio channel even without additional frequency adjustment.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

As described above, according to the present invention, when listening to radio while moving between regions having different radio broadcasting channel frequencies by vehicle, the radio broadcasting channel frequency of each region is stored in advance in the in-vehicle radio receiver, and the region is moved when the vehicle moves. By automatically switching to the frequency of the same radio broadcast channel of the driver, the driver who moves between vehicles to the area automatically and stably receive the same radio broadcast signal without a separate frequency adjustment operation so that the user's convenience is greatly increased. There is an advantage.

1 is a diagram illustrating a conventional radio broadcasting channel frequency by region;

2 is a block diagram of a vehicle audio receiver according to an embodiment of the present invention;

3 is a flowchart illustrating a process for automatically switching a radio broadcast channel frequency according to an embodiment of the present invention.

Claims (2)

A vehicle audio receiver having an automatic radio frequency switching function according to a region, A GPS module for providing current location information of a moving vehicle to check whether the vehicle has moved between regions; A tuner unit for receiving a frequency of a radio broadcasting channel tuned by a driver, A memory unit for storing radio broadcasting channel frequency information for each region; In the case of determining the movement between regions of the vehicle through the GPS module, the same radio broadcast signal is received by automatically converting the radio broadcast reception frequency of the tuner unit to the same radio broadcast channel frequency of the corresponding region according to the location information of the vehicle stored in the memory unit. A control unit for controlling the Vehicle audio device having a radio broadcasting channel frequency automatic switching function for each region comprising a. A method of automatically converting radio broadcasting channel frequencies by region using GPS in a vehicle audio device, (a) receiving and outputting a radio broadcast signal of a channel tuned by a vehicle driver; (b) checking whether the vehicle moves to a region where the radio broadcasting channel frequency is different; (c) searching for the same radio broadcasting channel frequency of the region when the vehicle moves to an area where the radio broadcasting channel frequency is set differently as a result of the inspection; (d) converting a reception frequency into the same radio broadcast channel frequency of the searched local area to allow the same radio broadcast signal to be received; Radio broadcasting channel frequency automatic switching method for each region comprising a.