KR20000012960A - Channel automation tracing apparatus of radio system and method for controlling the same - Google Patents

Abstract

PURPOSE: A radio system and automatic tracing apparatus is provided to always select the same frequency. CONSTITUTION: The channel automation tracing apparatus includes a navigation apparatus, an interface part(24), and a radio apparatus control part(25). The navigation apparatus is to exteriorly output an information for the present position of a vehicle exterior. The interface part is to be inputted an information for the present position which is outputted from the navigation apparatus and provide a broadcasting area information, which corresponds to the present position and is in advance established, to the radio apparatus. The radio apparatus control part is to confirm a present established broadcasting station, confirm the present broadcasting area being provided in the interface part using a present broadcasting area information, and tune to a frequency of the present established broadcasting of a changed broadcasting area when the present broadcasting area is changed.

Description

Channel automatic tracking device of radio system and its control method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuning system for a radio system, and more particularly, to a radio system and an automatic tracking method in which an apparatus for automatically tracking a specific broadcast channel having a different channel frequency in a predetermined region is provided.

Current broadcasts such as TV and radio broadcasts do not use the whole country as a frequency due to transmission output problems, and are divided into broadcast frequencies for each region. For example, broadcasting station A transmits the same broadcast program as the first frequency in the metropolitan area and the second frequency in the Yeongnam area. Therefore, if you move to the Yeongnam region while listening to A broadcast in the metropolitan area with a radio mounted on a moving object such as a vehicle, the radio in the vehicle must be tuned from the first frequency to the second frequency to continuously listen to the A broadcast.

Nowadays, if you don't know the broadcasting frequency of the new area after the move, you have to use the auto scan function to automatically scan the entire band of the radio. Even if you know, manual tuning while driving distracts the driver's attention. There was a problem that caused the risk of an accident. In addition, the method of using the auto-scan function when the broadcast channel is not caught due to the change of area also has to be inconvenient to use by repeatedly selecting the desired broadcast frequency.

Accordingly, an object of the present invention is to provide a radio system and an automatic tracking method for automatically tuning to a specific broadcast frequency by automatically tracking a specific broadcast having a different broadcast frequency for each predetermined region.

According to an aspect of the present invention, there is provided a channel automatic tracking device of a vehicle radio apparatus for storing information on a frequency set for each broadcasting station of each broadcasting region, the apparatus including: a navigation device for outputting information on a current position of a vehicle; An interface unit that receives information on the current location output from the navigation device and provides preset broadcasting area information corresponding to the current location to the radio device, and checks the currently set broadcasting station, and checks the current broadcasting area information provided by the interface unit. It is characterized in that it has a radio control unit for identifying the current broadcast area, and tunes to the frequency of the currently set broadcast station of the changed broadcast area when the current broadcast area is changed.

1 is a schematic overall block diagram of a device for automatically tracking channels of a radio system according to an embodiment of the present invention.

2 is a flow chart of a control unit for the radio control unit of the automatic channel tracking control process of the radio system according to an embodiment of the present invention

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific details such as specific components are shown, which are provided to help a more general understanding of the present invention, and it is understood that these specific details may be changed or changed within the scope of the present invention. It is self-evident to those of ordinary knowledge in Esau.

1 is a schematic block diagram of an apparatus for automatically tracking a channel of a radio system according to an exemplary embodiment of the present invention. Referring to FIG. 1, an apparatus according to an aspect of the present invention is largely comprised of a navigation device and a radio system of a vehicle.

The navigation device receives radio waves indicative of latitude, longitude, and altitude from a plurality of satellites belonging to the Global Positioning System (GPS), calculates the current position of the moving object, and provides the driver with map information including the current position. Mark it. That is, the conventional navigation device displays the current position of the moving object calculated using the information received from the GPS on the map displayed on the display screen. In addition, the driver provides various types of information necessary for driving such as displaying the moving direction of the moving object, the distance to the destination, the current moving speed of the moving object, the path set before the driver, the optimum path to the destination, and the like.

In the present invention, the navigation device is connected to the radio system of the vehicle, and the navigation device obtains information on the current position of the vehicle. Accordingly, the radio system is configured to track the frequency of the currently set broadcasting station even when the broadcasting area is changed. .

First, the navigation device will be described. Referring to FIG. 1, the GPS information receiver 10 receives radio waves from a plurality of satellites belonging to GPS through an antenna and calculates a pseudo coordinate value of a current position. The sensor unit 12 includes a gyro sensor and a speed sensor, and detects the rotation angle and the speed of the vehicle by the sensors. The current position calculation unit 11 calculates the current pseudo position of the vehicle based on the rotation angle and the speed of the vehicle transmitted from the sensor unit 12, and also among the pseudo coordinate values and the calculated pseudo position of the current position transmitted from the GPS information receiver 10. Choose one. At this time, the selection criterion follows the calculated value when the cumulative error is small from the sensor unit 12, and when the cumulative error is increased, the cumulative error is corrected by the value transmitted from the GPS information receiver 10. At this time, the current position calculator 11 calculates not only the current position of the vehicle but also driving information such as the speed of the vehicle and the traveling direction of the vehicle. The driving information of the vehicle finally calculated as described above is transmitted to the GPS controller 15.

The map information storage unit 13 stores map information and other additional information data. Since the map information is usually recorded on a CD, the map information storage unit 13 is mostly configured in the form of a CD driver. The display unit 16 composed of a TV or the like displays the map information read from the map information storage unit 13 and a state occurring during various executions. The GPS control unit 14 includes a plurality of keys to interface the driver and the navigation device. The GPS controller 15 reads the map data of the surrounding area from the map information storage unit 13 based on the driving information given by the current position calculation unit 11 and displays it on the display unit 16. The interface unit 24 displays information on the vehicle position according to the characteristics of the present invention. Will output As described above, the navigation device is constructed.

An interface unit 24 is configured between the navigation device and the radio device to receive information on the current vehicle location output from the navigation device and provide preset radio area information corresponding to the current location to the radio device.

Meanwhile, referring to FIG. 1, the radio apparatus includes a tuner 20, a radio operator 21, a signal separator 22, a decoder 23, an audio signal amplifier 27, a speaker 28, and a radio controller 25. The tuner 20 performs a tuning operation in response to the tuning signal provided from the radio controller 25, and receives and demodulates a signal having a corresponding frequency. The signal separator 22 separates and outputs the unique address signal and the audio signal of the corresponding broadcasting station from the signal output from the tuner 20.

The unique address of a broadcasting station is for identifying each broadcasting station, and transmits an address signal unique to each broadcasting station together with a voice signal. Such a station unique address is used even if the frequency of the local broadcast is different. For example, even if the broadcasting channel frequency of the metropolitan area of Broadcasting Station A is 89 MHz and the broadcasting channel frequency of the Yeongnam region is 108 MHz, the unique address of the broadcasting station is used the same.

The decoder 23 decodes the broadcast station unique address signal output from the signal separator 22 and outputs the signal to the radio controller 25. The voice signal amplifier 27 amplifies the input voice signal and outputs the audible sound through the speaker 28. The radio operator 21 includes a plurality of keys for selecting a broadcast channel and adjusting a volume, thereby interfacing the driver with the radio device.

The radio controller 25 outputs a tuning signal to the tuner 20 according to a channel selection signal according to the driver's operation of the radio operator 21, analyzes the output signal of the decoder 23, and recognizes a corresponding broadcasting station. The RAM 26 stores information on the frequency set for each broadcasting station in each broadcasting area in advance, and receives the information of the broadcasting area where the vehicle is currently located through the interface unit 24 to control the automatic channel tracking operation according to the characteristics of the present invention. do. Hereinafter, the operation of the radio controller 25 will be described in more detail with reference to FIG. 2.

2 is a flowchart illustrating a control process of a radio controller of a channel automatic tracking control process of a radio system according to an embodiment of the present invention. First, when the driver initially operates the radio device or performs a channel selection operation, the radio controller 25 outputs a tuning signal according to the channel selection signal to the tuner 20 to start the operation. Subsequently, the radio controller 25 receives the unique station signal of the corresponding broadcaster of the signal received through the tuner 20 by the tuner 20, the signal separator 22, and the decoder 23.

In step 30 of FIG. 2, the radio controller 25 identifies the broadcast station currently selected by the broadcast station unique address signal. Thereafter, in step 32, the current broadcasting region provided through the interface unit 24 is checked. In step 34, it is determined whether there is a change in the broadcasting area. This determination is performed by storing the information on the broadcasting area identified in step 32 in one register, and then comparing the current broadcasting area provided through the interface unit 24 with the information periodically stored in the register in step 34. This can be done by checking for a match.

If it is determined in step 34 that there is no change in the broadcast area, the process returns to step 32 and repeats the above process. If it is determined that there is a change in the broadcast area, the process proceeds to step 36 in which the radio controller 25 changes the broadcast area. In step 30, the tuner 20 outputs a tuning signal to tuner 20 to tune to the preset frequency of the currently selected channel. Thereafter, the process proceeds to step 32 to repeat the above process.

The above process will be described in more detail with reference to Table 1 below.

Channel＼ Area A area B area ... n area CH1 88 MHz 89 MHz ... 91 MHz CH2 92 MHz 93 MHz ... 95 MHz CH3 96 MHz 97 MHz ... 99 MHz :: :: :: :: :: CHn 104 MHz 105 MHz ... 107 MHz

As shown in Table 1, information on a corresponding frequency of a channel versus a region is previously stored in the internal RAM 26 of the radio controller 25.

In step 30 and 32 of FIG. 2, it is assumed that the broadcasting region currently identified is 'region A', and the checked channel is 'CH3'. When the vehicle moves to 'region B' of Table 1, the radio controller 25 determines this. After checking in step 34 and in step 36 it is tuned to the frequency of 'CH3' in the 'B region', that is, 97MHz as illustrated in Table 1 above.

By the above-described process and operation, an apparatus for automatically tracking a channel of a radio system and a method of controlling the same according to an aspect of the present invention can be achieved.

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 present invention should not be defined by the described embodiments, but by the equivalents of the claims and claims.

As described above, the present invention provides a channel automatic tracking device of a vehicle radio apparatus for storing information on a frequency set for each broadcasting station of each broadcasting area, including: a navigation device for outputting information on a current position of a vehicle to the outside; The interface unit which receives information on the current position output from the device and provides preset broadcasting region information corresponding to the current position to the radio device, and checks the currently set broadcasting station, and by the current broadcasting region information provided by the interface unit It has a radio control unit that checks the current broadcasting area and tunes to the frequency of the currently set broadcasting station of the changed broadcasting area when the current broadcasting area is changed. The broadcast frequency can be tuned.

Claims (2)

In the channel automatic tracking device of a vehicle radio device for storing information about the frequency set for each broadcasting station of each broadcasting area, A navigation device for outputting information on the current location of the vehicle to the outside; An interface unit for receiving information on a current location output from the navigation device and providing preset broadcasting area information corresponding to the current location to the radio device; It checks the currently set broadcasting station, and checks the current broadcasting region by the current broadcasting region information provided by the interface unit, and has a radio device controller for tuning to the frequency of the currently set broadcasting station of the changed broadcasting region when the current broadcasting region is changed. Channel automatic tracking device, characterized in that. In the method for automatically tracking a broadcast channel in a radio device receiving information on the current position of the vehicle from the navigation device, and stores information about the frequency set for each broadcasting station of each broadcasting area, Checking the currently set stations and broadcasting regions; Determining whether there is a change in the broadcasting area; And a step of tuning to a frequency of the identified broadcasting station preset in the changed broadcasting area when the broadcasting area is changed.