KR20010001797A - Apparatus and method for switching car radio frequency and car tv channel automatically by using gps and navigation - Google Patents

Abstract

PURPOSE: A method for automatically changing frequencies of a radio and TV channels in a car using a GPS(Global Positioning System) and a navigation system is provided to link regional information of the navigation system by GPS data with a database of radio frequencies and TV channels according to regions, so as to automatically change the frequencies or channels in boundaries of regions. CONSTITUTION: A radio system and a TV system of a car set up initial values of channel frequencies of the radio and channels of the TV according to regions, and turns the initial values into database.(S1) A navigation system receives coordinate data and time data of a GPS(Global Positioning System) satellite, to calculate a present position of the car and output regional information to the radio system and the TV system.(S2) The radio system and the TV system receive the regional information to decide whether the change of a region is detected.(S3) If the change of a region is detected, the radio system and the TV system search the set database, to search a database corresponding to a moved region.(S4) The radio system and the TV system compare a present receiving frequency and channel field intensity with a receiving frequency and channel field intensity of the moved region. If the present frequency and channel field intensity is larger, the S3 step is returned.(S5) If the receiving frequency and channel field intensity of the moved region is larger, the radio system and the TV system update the present receiving frequency and channel field intensity with the searched database.

Description

APPARATUS AND METHOD FOR SWITCHING CAR RADIO FREQUENCY AND CAR TV CHANNEL AUTOMATICALLY BY USING GPS AND NAVIGATION}

The present invention relates to an apparatus and method for automatically switching between radio frequency and TV channels of a vehicle using a global positioning system (GPS) and navigation, and in particular, local information of a navigation system using GPS data for a vehicle radio frequency. And an apparatus and method for automatically switching a radio frequency and a TV channel of a vehicle using GPS and navigation for automatically switching frequencies and channels in a boundary area of a region in association with a regional database of TV channels.

As is well known, GPS orbits the earth twice a day at 20,183km and coordinates 3 GPS satellites in 6 orbits, each of which transmits the signal for the current position and the time when the coordinate signal is transmitted. Dogs (24 in total, including spare satellites for each orbit) are arranged at equal intervals, and then the GPS receiver can be used to detect and process the position where the GPS receiver can be located by receiving and processing the signals transmitted from the GPS satellites. It is a device capable of detecting the position of a person by detecting a signal transmitted from three or more GPS satellites by using a GPS receiver composed of a GPS antenna and a GPS receiver circuit. GPS satellite signal is required).

As shown in FIG. 1, a conventional vehicle radio apparatus includes a key operation unit 10 for a user to manually convert a radio frequency and output a frequency converted signal; A control unit (20) connected to the signal output terminal of the key operation unit (10) to input a frequency conversion signal output from the key operation unit (10) to output a frequency conversion control signal and an audio control signal; Is connected to the signal output terminal of the control unit 20, converts the frequency by the frequency conversion control signal output from the control unit 20, receives a voice signal through the antenna, the voice control output from the control unit 20 A first radio tuner unit 30 for converting the received voice signal into voice data and outputting the received voice signal; An amplifier 40 connected to the signal output terminal of the first radio tuner unit 30 to amplify the voice data output from the first radio tuner unit 30; It comprises a first speaker (SPEA KER) (50) for receiving the amplified voice data amplified by the amplification unit 40 and outputs a voice that can be heard by the user.

That is, in the operation process of the conventional vehicle radio apparatus, first, when the user converts the radio frequency through the key operation unit 10, the control unit 20 inputs the frequency conversion signal output from the key operation unit 10 And outputs a voice control signal for controlling the operation of converting the voice signal received through the first radio tuner unit 30 into voice data to the first radio tuner unit 30.

Meanwhile, the first radio tuner unit 30 receives a voice signal through an antenna, converts the received voice signal into voice data by the voice control signal output from the controller 20, and amplifies the voice signal 40. )

In addition, the amplifier 40 amplifies by inputting the audio data output from the first radio tuner unit 30.

Meanwhile, the first speaker receives the voice data amplified by the amplifier 40 and outputs the voice data that can be heard by the user.

In addition, the conventional vehicle TV apparatus, as shown in Figure 2, the user manually converts the TV broadcast channel, and outputs a channel conversion signal and the channel control unit (100); A first TV connected to a signal output terminal of the key manipulation unit 100, inputting a channel conversion signal output from the key manipulation unit 100, converting a TV broadcasting channel, and receiving and outputting a TV image signal through an antenna A tuner unit 200; It is connected to the signal output terminal of the first TV tuner unit 200, and receives a TV video signal output from the first TV tuner unit 200 so that the user can view it. It is configured to include a first display unit 300 to make.

That is, referring to FIG. 2, an operation process of a conventional vehicle TV apparatus will be described. First, when a user converts a TV broadcast channel through the key manipulation unit 100, the key manipulation unit 100 outputs a channel conversion signal. 1 outputs to the TV tuner unit 200.

Meanwhile, the first TV tuner 200 inputs a channel conversion signal output from the key manipulation unit 100, converts a TV broadcast channel, receives TV image data through an antenna, and receives the first display unit ( 300).

In addition, the first display unit 300 inputs TV image data output from the first TV tuner unit 200 and displays the image for viewing by a user.

However, the conventional car radio and TV device as described above, when the driver, for example, while driving in the Seoul area while listening to the 89.1 MHz KBS (Korea Broadcasting System) radio broadcast, and moved to the Chungcheong region, If the radio broadcasting frequency is different according to the region, the radio broadcasting cannot be heard, and if the driver wants to continue to listen to the radio broadcasting of the channel that the driver is listening to, the radio frequency must be changed manually. There was a problem that a safety accident inadvertently occurred.

Accordingly, the present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a user with a local information of a navigation system and a broadcast currently being received from a database of a frequency and a channel of each local broadcast. You can watch or listen continuously without the need of operation, and you can set the broadcasting frequency and channel of each region in advance so that you do not need to operate the frequency and channel. It is to provide a switching device and method.

In order to achieve the above object, an apparatus for automatically switching between radio frequency and TV channels of a vehicle using GPS and navigation according to the present invention includes a GPS antenna and a GPS receiver circuit, and coordinate data and time of GPS satellites transmitted from a GPS satellite. A navigation system unit 55 for receiving data to calculate a current position of the vehicle and output local information; It holds a database of relevant broadcasting frequencies for each region, receives regional information from the navigation system 55, searches a database according to the region, and calculates electric field strength of a broadcast currently being received and electric field strength of a broadcasting frequency to be moved. A car radio system unit 65 which automatically makes a transition; A second radio tuner unit for inputting a frequency update signal from a database output from the vehicle radio system unit 65 to set a radio frequency corresponding to the current vehicle position and receiving voice data corresponding to the current vehicle frequency; 75; An amplifying unit 85 for receiving and amplifying and outputting voice data output from the second radio tuner unit 75; And a second speaker 95 for receiving the amplified voice data amplified by the amplifying unit 85 and outputting the voice data audible to the user.

In addition, the present invention, the automatic switching device of the radio frequency and TV channels of the vehicle using GPS and navigation, the GPS antenna and the GPS receiver circuit, and receives the GPS satellite coordinate data and time data transmitted from the GPS satellites of the vehicle A navigation system unit 350 for calculating a current position and outputting local information; It holds a database of relevant broadcasting channels for each region, receives regional information from the navigation system 350, searches a database according to the region, and measures the electric field strength of the broadcast currently being received and the electric field strength of the broadcasting channel to be moved. An automobile TV system unit 450 which automatically compares with each other; A second TV that receives a channel update signal from a database output from the vehicle TV system unit 450, sets a TV channel according to the current vehicle position, and receives and outputs image data corresponding to the channel of the current vehicle A tuner unit 550; The second TV tuner 550 receives the image data, and comprises a second display unit 650 configured to display the user for viewing.

On the other hand, the present invention provides a method for automatically switching between radio frequency and TV channels of a vehicle using GPS and navigation, comprising: a first step of setting an initial value of a radio frequency and a TV channel of each channel according to a region; Receiving coordinate data and time data of the GPS satellites transmitted from the GPS satellites, calculating a current position of the vehicle, and outputting local information; The third step of determining whether there is a regional change by receiving the regional information output in the second step and searching whether there is a regional change if there is no regional change, and proceeding to the fourth step if a regional change is detected. Wow; A fourth step of finding a database corresponding to the moving area by searching the database set in the first step; By comparing the current reception frequency and channel field strength with the reception frequency and channel field strength of the moving area, if the current reception frequency channel field strength is large, the process proceeds to the third step; Proceeding to the fifth step; And a sixth step of updating the current reception broadcast frequency and channel with the database found in the fourth step.

1 is a functional block diagram showing a configuration of a conventional vehicle radio apparatus;

2 is a functional block diagram showing a configuration of a conventional vehicle TV device;

3 is a functional block diagram showing a configuration of a radio of a vehicle having an automatic switching device of a radio frequency of the vehicle using GPS and navigation according to the present invention;

4 is a functional block diagram illustrating a configuration of a TV of a vehicle having an automatic switching device of a TV channel of the vehicle using GPS and navigation according to the present invention;

5 is an operation flowchart illustrating a method for automatically switching radio frequencies and TV channels of a vehicle using GPS and navigation according to the present invention.

<Explanation of symbols for main parts of drawing>

10: key control unit 20: control unit

30: first radio tuner unit 40: amplification unit

50: first speaker 55: navigation system unit

65: car radio system unit 75: the second radio tuner unit

85: amplifier 95: second speaker

100: key operation unit 200: first TV tuner unit

300: first display unit 350: navigation system unit

450: car TV system unit 550: second TV tuner unit

650: second display unit

Hereinafter, an apparatus and method for automatically switching radio frequencies and TV channels of a vehicle using GPS and navigation according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a functional block diagram showing the configuration of a device for automatically switching radio frequencies of a vehicle using GPS and navigation according to the present invention, wherein the vehicle is provided with an apparatus for automatically switching radio frequencies of a vehicle using GPS and navigation according to the present invention. The radio is composed of a navigation system unit 55, a car radio system unit 65, a second radio tuner unit 75, an amplifier 85, and a second speaker 95.

The navigation system 55 includes a GPS antenna and a GPS receiver circuit, and receives coordinate data and time data of the GPS satellites transmitted from the GPS satellites to calculate a current position of the vehicle and output local information.

Meanwhile, the car radio system unit 65 has a database of relevant broadcasting frequencies for each region, receives regional information from the navigation system 55, searches a database according to the region, and retrieves the currently received broadcast. It compares the electric field strength with the electric field strength of the broadcasting frequency to move and automatically transitions. An example of the database format used at this time is shown in Table 1 below.

KBS FM1 MBC FM EBS FM · Seoul 89.1MHZ 91.9MHZ 104.5MHZ · Chungju 90.3MHZ 99.9MHZ 105.7MHZ · Rice wine 92.5MHZ 97.3MHZ 107.9MHZ · · · · · ·

In addition, the second radio tuner unit 75 inputs a frequency update signal based on a database output from the vehicle radio system unit 65, sets the radio frequency corresponding to the current vehicle position, and sets the frequency of the current vehicle. Receives the voice data to fit and serves to output to the amplifier 85 to be described later.

On the other hand, the amplifying unit 85 receives and amplifies the voice data output from the second radio tuner unit 75, and then outputs the second speaker 95 to be described later.

In addition, the second speaker 95 receives voice data amplified by the amplifier 85 and outputs the voice data that can be heard by the user.

4 is a functional block diagram showing a configuration of an automatic switching device of a TV channel of a vehicle using GPS and navigation according to the present invention, and is provided with an automatic switching device of a TV channel of a vehicle using GPS and navigation according to the present invention. The TV of a vehicle includes a navigation system 350, an automobile TV system 450, a second TV tuner 550, and a second display 650.

The navigation system 350 includes a GPS antenna and a GPS receiver circuit, and receives coordinate data and time data of the GPS satellites transmitted from the GPS satellites to calculate a current position of the vehicle and output local information.

On the other hand, the car TV system 450 has a database of relevant broadcasting channels for each region, receives the region information from the navigation system 350 to search the database according to the region, and It compares the electric field strength with the electric field strength of the broadcasting channel to be moved to automatically transition.

In addition, the second TV tuner unit 550 inputs a channel update signal from a database output from the vehicle TV system unit 450, sets the TV channel according to the current vehicle position, and sets the channel of the current vehicle. Receives the image data corresponding to the output to the second display unit 650 to be described later.

Meanwhile, the second display unit 650 receives image data from the second TV tuner unit 550 and displays the image data for the user to watch.

Then, in the radio and TV of the vehicle having an automatic switching device of the radio frequency and TV channels of the vehicle using the GPS and navigation having the above configuration, the vehicle using the GPS and navigation according to an embodiment of the present invention A method of automatically switching between radio frequencies and TV channels will be described.

5 is an operation flowchart showing a method for automatically switching radio frequencies and TV channels of a vehicle using GPS and navigation according to the present invention, where S represents a step.

First, the car radio system unit 65 and the car TV system unit 450 set a radio frequency and an initial value of a TV channel of each channel according to the region, and make a database (S1).

Subsequently, the navigation system units 55 and 350 receive coordinate data and time data of the GPS satellites transmitted from the GPS satellites, calculate a current position of the vehicle, and provide local information to the car radio system unit 65 and Output to the car TV system unit 450 (S2).

Thereafter, the car radio system unit 65 and the car TV system unit 450 receive the region information output from the navigation system units 55 and 350 to determine whether there is a region change. If not, it continues to search whether there is a regional change, and if a regional change is detected, the process proceeds to the following fourth step (S3).

Thereafter, the car radio system unit 65 and the car TV system unit 450 search the database set in the first step to find a database corresponding to the moving area (S4).

Then, the car radio system unit 65 and the car TV system unit 450 compare the current reception frequency and the channel electric field strength with the reception frequency and the channel electric field strength of the moving area, and if the current reception frequency channel electric field strength is large, On the other hand, if the received frequency channel electric field strength of the moving area is large, the process proceeds to the following sixth step (S5).

Thereafter, the car radio system unit 65 and the car TV system unit 450 update the current reception broadcast frequency and channel to the database found in the fourth step (S6).

As described above, according to the apparatus and method for automatically switching between radio frequency and TV channels of a vehicle using GPS and navigation according to the present invention, a broadcast currently being received from a database of area information of a navigation system and a frequency and channel of each local broadcast. Even if the area is changed, it can be seen or heard continuously without user's operation, and there is no need to operate the frequency and channel by presetting the broadcasting frequency and channel of each area, so that the driver's convenience is excellent.

Claims (3)

A navigation system (55) having a GPS antenna and a GPS receiver circuit for receiving coordinate data and time data of the GPS satellites transmitted from the GPS satellites, calculating a current position of the vehicle, and outputting local information; It holds a database of relevant broadcasting frequencies for each region, receives regional information from the navigation system 55, searches a database according to the region, and calculates electric field strength of a broadcast currently being received and electric field strength of a broadcasting frequency to be moved. A car radio system unit 65 which automatically makes a transition; A second radio tuner unit for inputting a frequency update signal from a database output from the vehicle radio system unit 65 to set a radio frequency corresponding to the current vehicle position and receiving voice data corresponding to the current vehicle frequency; 75; An amplifying unit 85 for receiving and amplifying and outputting voice data output from the second radio tuner unit 75; Radio frequency and TV channel of the vehicle using GPS and navigation, characterized in that it comprises a second speaker (95) for receiving the amplified voice data amplified by the amplification unit 85, and outputs the voice audible to the user Automatic switching device. A navigation system unit (350) having a GPS antenna and a GPS receiver circuit for receiving coordinate data and time data of the GPS satellites transmitted from the GPS satellites, calculating a current position of the vehicle, and outputting local information; It holds a database of relevant broadcasting channels for each region, receives regional information from the navigation system 350, searches a database according to the region, and measures the electric field strength of the broadcast currently being received and the electric field strength of the broadcasting channel to be moved. An automobile TV system unit 450 which automatically compares with each other; A second TV that receives a channel update signal from a database output from the vehicle TV system unit 450, sets a TV channel according to the current vehicle position, and receives and outputs image data corresponding to the channel of the current vehicle A tuner unit 550; Radio frequency and TV channel of the vehicle using GPS and navigation, characterized in that it comprises a second display unit 650 for receiving the image data from the second TV tuner unit 550 to display for the user to watch. Automatic switching device. A first step of setting radio frequency and TV channel initial value of each channel according to region; Receiving coordinate data and time data of the GPS satellites transmitted from the GPS satellites, calculating a current position of the vehicle, and outputting local information; The third step of determining whether there is a regional change by receiving the regional information output in the second step and searching whether there is a regional change if there is no regional change, and proceeding to the fourth step if a regional change is detected. Wow; A fourth step of finding a database corresponding to the moving area by searching the database set in the first step; By comparing the current reception frequency and channel field strength with the reception frequency and channel field strength of the moving area, if the current reception frequency channel field strength is large, the process proceeds to the third step; Proceeding to the fifth step; And a sixth step of updating the current received broadcast frequency and channel with the database found in the fourth step.