KR20000038176A - Radio frequency automatic selecting method using satellite position measuring system - Google Patents

Abstract

PURPOSE: A radio frequency automatic selecting method using a satellite position measuring system is provided for users to successively listen to a radio broadcasting without an extra manipulation even though a frequency of the corresponding radio broadcasting is changed while the user is listening to a radio broadcasting. CONSTITUTION: Frequency of each broadcasting station is stored by regions. An automatic tuning function and its operating standby time are set. It is judged whether a radio broadcasting receiving device is operated in a radio broadcasting receiving mode, and when it is, the broadcast station is stored and then the automatic tuning function is selected. And, it is checked whether the set operating standby time has lapsed, if so, position information representing a current radio broadcasting listening region is obtained by using a GPS, and the current radio broadcasting listening region as obtained is compared with a previous listening region to confirm whether the two are identical(101-106). If they are not identical, a listening broadcasting station frequency of the current listening region is read from the broadcast station frequency data by regions as stored, so that the tuning frequency of the radio is changed to the frequency(107-109). And, the current listening region is changed to the previous listening region and is stored(110).

Description

Automatic radio frequency selection method using satellite positioning system

The present invention relates to a tuning frequency selection method in an apparatus for receiving a radio broadcast, and more particularly, even if the frequency of the radio broadcast is changed during the listening of any radio broadcast, the listener continues to listen to the radio broadcast without any manipulation. The present invention relates to a radio frequency automatic selection method using a satellite positioning system that can be enabled.

In general, radio broadcasting is allocated to each broadcasting station (for example, KBS2 FM, KBS2 AM, MBC FM, SBS Power FM, ...), and the broadcast signal (FM) through each assigned channel. Or AM modulated audio signal), and the listener receives and listens to the audio signal transmitted from each broadcasting station using a predetermined receiver.

The broadcast signal transmitted from each broadcasting station is propagated to each region through a transmission station that is set up at a predetermined distance. By the way, when the same frequency is used for each transmitting station, since interference may occur between transmitting stations relaying the broadcast signal, different transmitting frequencies are used for each channel.

For example, in case of KBS2 FM broadcasting, it transmits at 89.1MHz in Seoul, Incheon area, 91.4MHz in Gyeonggi area, and 85.3MHz in Gwangju area. Therefore, if you want to listen to the same KBS2 FM broadcast, the listener in the competition area should adjust the tuning frequency of the receiver to 89.1MHz and 85.3MHz in Gwangju.

However, if you are moving while listening to a radio station using a portable small cassette, or driving while listening to a radio station through the FM / AM tuner of the car audio, if you move to an area where the transmission station is changed, the station will broadcast the broadcast you are listening to. Since the frequency is different, the reception becomes impossible, and if the user wants to listen to the broadcast continuously, there is an inconvenience in that the tuning frequency of the receiver needs to be adjusted again so that the listener wants the broadcast.

The present invention has been made to solve the above problems, the object of which is that even if the frequency of the corresponding radio broadcast during listening to any radio broadcast, the listener can continue to listen to the radio broadcast without any additional operation To provide a radio frequency automatic selection method using a satellite positioning system.

1 is a flowchart showing a method for automatically selecting radio frequencies using a satellite positioning system according to the present invention.

FIG. 2 is a block diagram illustrating car audio to which an automatic radio frequency selection method according to an embodiment of the present invention is applied.

* Description of the symbols for the main parts of the drawings *

21: FM / AM tuner 22: Tape deck assembly

23: compact disc player (on C) 24: volume control unit

25: power amplifier 26: speaker

27: key input unit 28: memory

29: satellite positioning module (GPS) 30: micom

31: LCD driver 32: LCD

In order to achieve the above object, the present invention provides a radio frequency automatic selection method using a satellite positioning system applied to a device having a radio broadcast receiving function,

Storing the frequencies of each broadcasting station for each region;

Setting an automatic tuning function and an operation standby time;

The radio broadcasting receiver determines whether the radio broadcasting receiver is operating in the radio broadcasting reception mode, and when the radio broadcasting receiver is in operation, stores the receiving station, selects the automatic tuning function, checks whether the set operation waiting time has elapsed, and then the automatic tuning function. When the selected standby time has elapsed, the GPS information is used to acquire location information indicating the current radio broadcast listening area, and the current radio broadcasting listening area obtained above matches the previous listening area. Compare the steps,

If the current radio broadcast listening area does not match the previous radio listening area in this step, the stored broadcasting station frequency data is read from the stored broadcasting station frequency of the current listening area, the radio tuning frequency is changed to the frequency, and the current listening area is changed. Characterized in that it comprises the step of saving and changing to the previous listening area.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to attached drawing.

The radio frequency automatic selection method using the satellite positioning system according to the present invention can be applied to any device that receives a radio broadcast and converts it into an audible sound wave. The satellite positioning system and the station frequency value of each region should be stored, and the method according to the present invention is performed according to the procedure shown in FIG. After the automatic frequency selection has been performed, the operation time in the following time becomes the wait time until the next automatic frequency selection.), The frequency automatic selection operation as shown in the flowchart shown in FIG. 1 is repeatedly performed for each set operation period.

Therefore, if only one cycle operation is described, first, it is checked whether the apparatus to which the radio frequency automatic selection method according to the present invention is applied operates in the radio reception mode (101), and also the waiting time corresponding to the set operation cycle. It is checked if this has elapsed (102). In the above, if the device is operating in the radio reception mode and the set waiting time has elapsed, it is checked whether the automatic frequency change mode is selected in the device (the device to which the automatic radio frequency selection method according to the present invention is applied) (103). When selected, location information indicating the current listening area is acquired (104) using the satellite positioning system (GPS). After storing the acquired location information as a NEW_AREA value indicating the changed listening area (105), the acquired current listening area NEW_AREA is compared with the previous listening area OLD_AREA (106). As a result, if the current listening area NEW_AREA does not match the previous listening area OLD_AREA, it is determined that the transmitting station has moved to another area, and the current listening area NEW_AREA value is stored as OLD_AREA representing the previous listening area, and then tuned in the previous listening area. The frequency value in the current listening area of the broadcasting station corresponding to one frequency is read (108), and the tuning frequency is changed to the read frequency (109).

In this manner, when the automatic change of the tuning frequency is completed, the operation of one cycle is completed by setting the waiting time until the next tuning frequency change. In the above, the waiting time setting may allow the listener to set arbitrarily according to the moving time to the next moving area. In the above, if the current operation mode of the device is not the radio mode (101), or if the waiting time has not elapsed (102), after setting only the waiting time and ending, if the automatic frequency change is not set in the above ( 103) It ends as it is.

2 is a block diagram showing car audio to which an automatic radio frequency selection method using a satellite positioning system is applied as an embodiment of the present invention.

The car audio is FM / AM tuner 21 for receiving and demodulating the tuned frequency signal under control of the microcomputer 30 and converting the signal to a baseband audio signal, and the tape of the tape under the control of the microcomputer 30. A tape deck assembly 22 for performing playback, a compact disc player (hereinafter referred to as CDP) 23 for reproducing audio signals recorded on a compact disc under the control of the microcomputer 30, and the microcomputer 30 A volume control unit 24 for adjusting an audio signal applied from the FM / AM tuner 21 or the tape deck assembly 22 or the CDP 23 to a set volume level according to the control of the control unit 24 and the volume control unit 24. A power amplifier 25 for power amplifying the audio signal level adjusted by the < RTI ID = 0.0 >), a speaker 26 for converting and outputting the audio signal output from the power amplifier 25 into sound waves, radio station, tape play / stop, Instructs play / stop and volume control of the CDP. A key input unit 27 for outputting a key signal according to a user's key operation by having an automatic tuning key for setting a function according to the present invention together with a plurality of keys, and a memory 28 storing frequencies of each broadcasting station for each region. And a satellite positioning module (hereinafter referred to as a GPS module) 29 which receives position information on a current radio listening area through transmission and reception with a satellite under control of the microcomputer 30, and the key input unit 27. When the automatic tuning key is operated from the control unit, the GPS module 29 is controlled to obtain location information on the current listening area when the operating time is reached. A microcomputer 30 which reads the frequency of the broadcasting station currently being received for the current listening area from the tuner and controls the tuning operation of the FM / AM tuner 21; and L which displays a predetermined character under the control of the microcomputer 20. FIG. A DC driver 21 and an LCD 22 are provided.

The autotuning operation in the car audio having the above-described configuration is as follows.

That is, the automatic tuning operation cycle is set in the microcomputer 30, which can be set by the listener to an arbitrary value by manipulating the keys of the key input unit 27. (i.e., set to the time it takes for the user to go to another listening area. And, the frequency of each broadcasting station for each region is stored in the memory 28, and the corresponding data is output under the control of the microcomputer 30. In addition, when the car audio operates in the radio reception mode, the microcomputer 30 stores the broadcast station name for the frequency received by the FM / AM tuner 21. This can be seen by searching the data in the memory 28 by combining the listening area information obtained from the GPS module 29 and the tuning frequency of the FM / AM tuner 21.

In this state, if the automatic tuning key of the key input unit 27 is turned on, the microcomputer 30 operates the GPS module 29 when the set waiting time has elapsed, and the GPS module 29 transmits and receives the satellite. The location data indicating the current listening area is obtained and applied to the microcomputer 30. The approved microcomputer 30 compares the previous listening area (listening area before operating the GPS module 29) stored therein with the current listening area authorized from the GPS module 29, and matches the same. If not, all the operating conditions of the auto-tuning mode are satisfied, and thus, the current listening area data obtained from the GPS module 29 and the broadcasting station data corresponding to the frequencies tuned by the current FM / AM tuner 21 are stored in advance. Are combined to read the frequency of the corresponding broadcasting station of the current listening area from the memory 28, and adjust the FM / AM tuner 21 so that this frequency is the tuning frequency.

For example, when Seoul is the departure area and Busan is the arrival area, the listener sets the waiting time to about 30 minutes, turns on the automatic tuning key of the key input unit 27, and listens to the KBS2 FM broadcast. In the microcomputer 30, KBS2 FM is stored as a listening station, and every 30 minutes, the listening area moved from the GPS module 29 is input, and the previous listening area (previous listening area data is selected by the GPS module 29). Whenever it is input, it is changed to a newly input listening area, and when it does not match, the frequency of the corresponding area is read from the memory 28 to control the tuning of the FM / AM tuner 21. That is, if the listening area is changed in the order of "Seoul-Gyeonggi-Daejeon-Daegu-Busan", the tuning frequency of the FM / AM tuner 21 is "89.1MHz-89.3MHz-by the automatic tuning function of the present invention. 88.1MHz-89.9MHz .. "In this order, the listener will continue to listen to radio stations of the same station, KBS2 FM, without any key operation.

As described above, the present invention obtains the current listening area by using a GPS system, and if the reception area of the corresponding radio broadcast is changed during the listening of the radio broadcast, the radio frequency is automatically changed according to the changed area. Even if the listener is listening to a radio broadcast and is moving to another area, the listener can listen to the same broadcast continuously without any key operation, so that the listener can have more convenience.

Claims (1)

In the radio frequency automatic selection method using a satellite positioning system applied to a device having a radio broadcasting reception function, Storing the frequencies of each broadcasting station for each region; Setting an automatic tuning function and an operation standby time; The radio broadcasting receiver determines whether the radio broadcasting receiver is operating in the radio broadcasting reception mode, and when the radio broadcasting receiver is in operation, stores the receiving station, selects the automatic tuning function, checks whether the set operation waiting time has elapsed, and then the automatic tuning function. When the selected standby time has elapsed, the GPS information is used to acquire location information indicating the current radio broadcast listening area, and the current radio broadcasting listening area obtained above matches the previous listening area. Compare the steps, If the current radio broadcast listening area does not match the previous radio listening area in this step, the stored broadcasting station frequency data is read from the stored broadcasting station frequency of the current listening area, the radio tuning frequency is changed to the frequency, and the current listening area is changed. Automatic radio frequency selection method using a satellite positioning system characterized in that it comprises the step of changing and saving the previous listening area.