KR19990084479A - Broadcasting frequency automatic switching device and method according to local movement - Google Patents

Abstract

The present invention provides an apparatus and method for automatically switching to a frequency corresponding to a broadcast set when a region is changed. The present invention is a region detection unit for detecting the current location as a local recognition frequency, a control unit for storing the broadcasting frequency for each region and controlling to receive the detected broadcast frequency according to the set broadcast, and set according to the control of the controller Characterized in that it comprises a broadcast receiving unit for receiving a broadcast frequency of the area corresponding to the broadcast. In another aspect, the present invention is characterized in that the radio system for storing the frequency of each broadcast according to the region detects the currently located region and the set broadcast channel, and receives a broadcast frequency corresponding to the detected region. Accordingly, the present invention is convenient because the driver does not need to operate separately to find a broadcast frequency that the driver wants to listen to while driving.

Description

Broadcasting frequency automatic switching device and method according to local movement

The present invention relates to an apparatus and method for automatically switching broadcast frequencies, and more particularly, to an apparatus and method for automatically switching to a broadcast frequency of a region providing a broadcast set when a region is moved.

In general, TV and radio broadcasts do not use the whole country as a frequency due to problems in transmission output, and broadcast programs are divided into regional broadcast frequencies. For example, broadcasting station A transmits the same broadcast program at A1 frequency in the first region and A2 frequency in the second region.

Therefore, when the vehicle moves to the second region while listening to the A broadcast in the first region by the radio receiver of the audio system provided in the vehicle, the A broadcast can be continuously listened only by tuning from the A1 frequency to the A2 frequency.

In general, when a radio receiver does not know the broadcasting frequency of a new region after moving to a region, the radio receiver may automatically scan the entire band of the radio broadcasting frequency using an auto scan function. However, this automatic scan takes time because the radio broadcast listener has to scan the entire band of the radio broadcast frequency in order to find the broadcast frequency to be listened to. In addition, when the area is changed and the broadcast channel is not captured, the method of using the auto-scan function also has to be repeatedly selected until the broadcast frequency to be listened to is tuned.

On the other hand, even if the driver knows the broadcasting frequency according to the area change, manually tuning the desired broadcast through the radio receiver in the vehicle while driving is at risk of an accident.

Accordingly, an object of the present invention is to provide an apparatus and method for automatically tracing a particular broadcast by automatically tracking a specific broadcast having a different broadcast frequency when a region change is detected.

Another object of the present invention is to provide an apparatus and a method for identifying a set broadcast and a moved region and automatically receiving a broadcast frequency of the region corresponding to the set broadcast.

Another object of the present invention is to provide an apparatus and a method for notifying a changed region and a broadcasting frequency serviced in the region whenever the region is changed.

According to an aspect of the present invention, there is provided a region detection unit for detecting a region in which a radio system is currently located, a controller for storing a broadcasting frequency corresponding to each region and setting a channel to a broadcasting frequency of the region detected according to a set channel. And a broadcast receiver configured to receive a broadcast channel frequency of a region corresponding to a channel set under the control of the controller. In addition, the present invention detects the area currently located in the radio system that stores the area recognition frequency and the broadcast frequency of each area, and displays the broadcast frequency serviced in the area, and the broadcast frequency of the detected area that provides the broadcast set by the user It provides a method for receiving a.

1 is a block diagram of a broadcast frequency automatic switching device according to the present invention.

2A is a diagram illustrating a region and a region recognition frequency in accordance with the present invention.

Figure 2b is a view showing the broadcasting frequency for each region according to the present invention.

3 is a diagram illustrating a process of automatically switching broadcast frequencies when a region is changed in an apparatus 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 of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

FIG. 1 is a block diagram of an apparatus for automatically switching broadcast frequencies according to an embodiment of the present invention, and includes a control unit 100, a memory 110, a display unit 120, a key input unit 130, a receiver 140, and a broadcast unit 150.

1 to 2B, the controller 100 controls the overall operation of the apparatus for automatically switching broadcast frequencies according to an embodiment of the present invention. The memory 110 stores regional recognition frequencies for each region as shown in FIG. 2A and a broadcast frequency capable of tuning for each region as shown in FIG. 2B. The display unit 120 displays a broadcast frequency currently being received under the control of the controller 100, or displays a broadcast frequency of a region changed when the region is changed. The key input unit 130 includes a function key for the user to select a broadcast, and transmits key data corresponding to the key input by the user to the control unit 100. The controller 100 sets a broadcast that the user wants to listen to using key data input from the key input unit 130, and controls the broadcast unit 150 to receive a set broadcast frequency corresponding to the region as the region moves. The receiving unit 140 receives a predetermined signal from the antenna Ant1, amplifies the amplifier 141, and transmits the signals of the PLL144 and the amplifier 141 to the control unit 100 through the mixer 142. That is, the receiver 140 receives a signal of a different frequency in each region as a signal received through the antenna Ant1 and transmits the signal to the controller 100. The area recognition frequency is for informing the current location by transmitting signals of different frequencies for each area. This area recognition frequency is a specific frequency caused by transmitting signals of different frequencies from each region's transmitting station as a wide area wireless paging service is performed. In addition, the local recognition frequency may be provided by transmitting a signal of a specific frequency in order to inform the current region from each local broadcasting station. Then, the controller 100 detects a region currently located by the region recognition frequency received from the receiver 140, retrieves a broadcast frequency corresponding to the detected region from the memory 110, and controls the broadcast unit 150 to receive a broadcast frequency set by the user. Do it. Therefore, the broadcaster 150 receives the broadcast of the set broadcast frequency provided by the region currently located through the antenna Ant2 under the control of the controller 100.

3 is a diagram illustrating a process of automatically searching for a specific broadcast according to local movement and automatically switching broadcast frequencies according to an embodiment of the present invention.

1 to 3, a method for automatically listening to a specific broadcast regardless of local movement will be described in the apparatus for automatically switching broadcast frequencies according to an embodiment of the present invention. In step 310, the controller 100 receives key data corresponding to the broadcast set by the user from the key input unit 130 and sets the broadcast that the user wants to listen to. In step 320, the controller 100 controls the broadcaster 130 to receive the broadcast frequency set in the above step. In step 330, the control unit 100 receives the area recognition signal through the receiving unit 140, and determines whether or not the area has been moved by the electric field strength of the received signal. That is, if the received electric field strength of the area recognition signal falls below a predetermined level, the controller 100 determines that the area has been moved to another area. If the area is not moved, the controller 100 continues to receive the broadcast frequency set in the step through the broadcast unit 130.

In contrast, if it is determined in step 330 that the area has been moved, in step 340, the control unit 100 sets the area recognized by the received area recognition frequency stored in the memory 110 as a signal of the area recognition frequency received from the receiver 140. Search for broadcast frequencies. That is, the controller 100 searches for an area corresponding to the received area recognition frequency from the memory 110 and searches for a set broadcast frequency corresponding to the area. In step 350, the controller 100 controls the broadcaster 150 to receive the set broadcast frequency provided in the searched area. The controller 100 continuously detects the received electric field strength of the region recognition frequency received through the receiver 140 and controls the broadcaster 150 to receive the broadcast frequency according to the moved region when the region moves.

In other words, when the broadcasting channel switching apparatus according to the present invention moves through an area, it receives an area recognition frequency and accurately finds the area. If the apparatus for switching broadcast channels according to the present invention does not detect an area and the electric field strength is lower than the standard, the apparatus for shifting a channel according to the present invention moves to the channel having the strongest electric field strength and performs a process of searching for a corresponding area. When the search for the moved area is completed, the broadcast channel switching apparatus according to the present invention outputs the broadcast frequency serviced in the moved area to the display unit 120 so that the user can know the area movement, and corresponds to the broadcast set by the user. Receive local broadcast frequencies automatically.

On the other hand, when the user does not move the area, the broadcast channel switching apparatus according to the present invention ignores this process if the user sets a desired region manually, and continues to receive the set broadcast frequency.

A case in which a vehicle equipped with an automatic broadcast switching device according to the present invention wants to continue to listen to the broadcast A even when the vehicle moves from the first region to the second region will be described as an example. First, the user sets a broadcast A to which he / she wants to continue listening by pressing a predetermined function key. Then, the apparatus for automatically switching broadcasts according to the present invention receives the broadcast frequency A1 corresponding to the broadcast A in the currently located first region. However, as the vehicle moves from the first region to the second region, the reception sensitivity of the broadcast received at the broadcast frequency A1 gradually decreases. In addition, the apparatus for automatically switching broadcasts according to the present invention continuously receives an area recognition frequency to search for an area currently located. That is, the apparatus for automatically switching broadcasts according to the present invention receives the local recognition frequency, and when the electric field strength falls below the reference value, determines that the area has been moved and finds the moving area as the local recognition frequency of the moved area. When the vehicle moves from the first region to the second region, the electric field strength of the region recognition frequency F1 of the first region is gradually decreased, and the electric field strength of the region recognition frequency F2 of the second region is gradually increased. As such, the apparatus for automatically switching broadcasting according to the present invention moves from the first region to the second region when the electric field strength of the region recognition frequency F2 in the second region is greater than the field strength of the region recognition frequency F1 in the first region. It is considered to be in the second area. Accordingly, the apparatus for automatically switching broadcasts according to the present invention receives the broadcast frequency A2 for providing the broadcast A set in the second region currently located.

As described above, the present invention can search for a moved area, recognize the broadcasting frequency of the area, and automatically switch to automatically change the area so that the user can listen to the desired broadcast. Therefore, since the present invention is provided as a car audio system in a car, a separate operation is not required to find a broadcasting frequency that a driver wants to listen to while driving while driving in a region, and thus can operate safely.

Claims (5)

In the apparatus for automatically switching the broadcast frequency in accordance with the regional movement, A memory for storing a region recognition frequency indicating a predetermined region and a broadcasting frequency for each region; A region detector which detects a region recognition frequency of the region currently moved when the region is moved; A broadcast receiver for receiving a predetermined broadcast frequency; And a controller configured to search for an area corresponding to the detected area recognition frequency stored in the memory using the area recognition frequency detected by the area detection unit, and control the broadcast receiving unit to receive a broadcast frequency of the found area corresponding to the set broadcast. Apparatus characterized in that the. The apparatus of claim 1, further comprising a display unit which displays a broadcast frequency for providing a broadcast set in the searched area. Claims [1] A method for automatically switching to a broadcast channel set when moving a region in a broadcast receiving device including a region storing a local recognition frequency indicating a predetermined region and a broadcasting frequency serviced by each region, and at least a region detecting unit detecting the region recognition frequency. A first step of determining that the area is moved when the electric field strength of the area recognition frequency is lower than a reference value; If it is determined that the area is moved in the first step, a second step of detecting a current area recognition frequency through the area detection unit; A third step of identifying a current area using the local frequency detected in the second step and searching for a broadcast frequency corresponding to the identified area in the memory; And receiving a frequency corresponding to a broadcast set by the user from the found broadcast frequencies. 4. The method of claim 3, further comprising the step of displaying a broadcast frequency for providing broadcast set in the changed area. Claims [1] A method for automatically switching to a broadcast channel set when moving a region in a broadcast receiving device including a memory for storing a region recognition frequency and a region-specific broadcasting frequency representing a predetermined region and a receiver receiving the region recognition frequency. A first step of receiving an electric field strength of a predetermined area recognition frequency from the receiving unit; A second process of re-receiving a current region recognition frequency by determining that the region is changed when the electric field strength received in the first process is less than the reference value; A third step of identifying a current location by comparing the area recognition frequency re-received in the second step with the area recognition frequency stored in the memory; A fourth process of searching for a broadcast frequency corresponding to the identified region in the memory and displaying a broadcast frequency serviced in the identified region; And a fifth process of receiving a frequency corresponding to a broadcast set by the user among broadcasting frequencies of the region searched in the fourth process.