KR0168994B1 - Channel automatic setting up method by using multi-picture function - Google Patents

Abstract

The present invention relates to a channel automatic setting method using a multi-screen function. In order to perform a channel automatic setting function using a sub-screen even when a user watches the main screen, the present invention is provided with a first and second tuners. A channel automatic setting method using a multi-screen function of a television having a screen function, comprising: tuning a main broadcast signal through the first tuner and then displaying the main screen; Sequentially tuning sub-broadcast signals from the current channel displayed on the main screen through the second tuner and displaying them on the sub-screen; When the sub-broadcast signal is detected by detecting the signal level of the sub-broadcast signal sequentially tuned from the second tuner, the current channel where the broadcast signal is detected is stored.

Description

Channel auto setting method using multi screen function

1 is a schematic block diagram for performing a channel automatic setting method using a multi-screen function according to the present invention.

2 is a flowchart of the operation of the microcomputer shown in FIG.

* Explanation of symbols for main parts of the drawings

1 antenna 2,3 tuner

4: luminance and color signal separation unit 5: luminance signal processing unit

6 color signal processor 7 synthesizer

8: monitor 9: on-screen display

10: microcomputer

The present invention relates to a method for automatically setting a channel using a picture in picture (PIP) function. More particularly, in a television having a plurality of tuners, a main screen is displayed using one tuner and the other The present invention relates to a channel automatic setting method using a multi-screen function for displaying a broadcast signal received through a tuner on a sub screen and automatically setting a channel through which a broadcast signal is received.

In general, the channel setting method of a television is as follows. That is, when the user key-ins the channel automatic setting key, the tuner sequentially increases the channel from the lowest channel, checks whether a broadcast signal is received, and stores the corresponding channel when the broadcast signal is received. .

In addition, in the case of a television having a multi-screen function, a plurality of tuners for receiving a main video signal and a sub video signal are built in. A tuner for receiving a dual video signal is used only when performing a multi-screen function. It is set to. Therefore, when the multi-screen function is not performed, a separate tuner has a problem that its use range is very inefficient.

Accordingly, an object of the present invention is to solve the aforementioned problem, and an object of the present invention is to perform a channel automatic setting function by using a tuner for receiving a sub-picture signal, thereby enabling multiple tuners to be used more efficiently. It is to provide a channel automatic setting method using the screen function.

Another object of the present invention is to provide a channel automatic setting method using a multi-screen function to provide a better service to the user by allowing the user to automatically set the channel using the sub screen while watching the main screen. .

According to an aspect of the present invention, there is provided a method for automatically setting a channel using a multi-screen function of a television having a multi-screen function by including a first and a second tuner. After tuning the broadcast signal, display the main screen; Sequentially tuning sub-broadcast signals from the current channel displayed on the main screen through the second tuner and displaying them on the sub-screen; The present invention provides a method for automatically setting a channel using a multi-screen function that detects a signal level of a sub-broadcast signal sequentially tuned from the second tuner and stores a current channel from which a broadcast signal is detected.

In the above-described aspect of the present invention, if the automatic channel setting function is selected, turning on the sub-screen; Controlling a second tuner to detect a broadcast signal from a current channel on which a main screen is displayed, and then displaying the broadcast signal on a sub screen; Checking whether a broadcast signal is detected in the current channel displayed on the sub-screen, storing the current channel when the broadcast signal is detected, and sequentially increasing the channel by one channel from the current channel; And if the broadcasting channel of the main screen and the broadcasting channel of the subscreen are the same, and if the broadcasting channel of the main screen and the broadcasting channel of the subscreen are the same, the automatic channel setting function is stopped and the subscreen is turned off. It is desirable to perform the step of making.

Hereinafter, exemplary embodiments of an automatic channel setting method using a multi-screen function according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram for performing a channel automatic setting method using a multi-screen function according to the present invention.

Referring to FIG. 1, the luminance of the first and second tuners 2 and 3 for tuning the video signal received from the antenna 1 and the video signals tuned by the first and second tuners 2 and 3 is shown. In the luminance and color signal separation unit 4 for separating the signal and the color signal, the luminance signal processing unit 5 for signal processing the luminance signal separated in the luminance and color signal separation unit 4, and the luminance and color signal separation unit 4 A color signal processor 6 for signal-processing the separated color signal, a synthesizer 7 for synthesizing the luminance signal signal-processed by the luminance signal processor 5 and the color signal signal-processed by the color signal processor 6, and a synthesizer 7 And a monitor 8 for displaying the video signal synthesized by the above.

In addition, the on-screen display unit 9 for generating an on-screen display character, and the driving state of the first and second tuners (2, 3) in accordance with the control signal applied from the outside, and The on-screen display character is generated by controlling the screen display unit 9, and the brightness signal processor 4 is controlled to synthesize the broadcast signals tuned by the first and second tuners 2 and 3 in a multi-screen manner. At the same time, it is composed of a microcomputer 10 for synthesizing the on-screen display molecules generated by the on-screen display unit 9 and the luminance signals processed by the luminance signal processing unit 4.

The operation of the present invention having the configuration as described above will be described with reference to FIG.

First, in the function of a conventional television, the image signal received by the antenna 1 is tuned by either one of the first and second tuners 3, 3 and then by the luminance and color signal separation section 4. It is separated into a luminance signal and a color signal, respectively. The separated luminance and color signals are signal processed by the respective signal processing units 5 and 6, and then applied to the synthesizer 7 to be synthesized. Then, the video signal synthesized by the synthesizer 7 is displayed on the monitor 8, so that the user can view the video information.

On the other hand, the microcomputer 10 checks whether the channel automatic setting function is selected (S1). If it is determined in this step S1 that the channel automatic setting function has not been selected, the flow returns to the above-described step S1 to continuously check whether the channel automatic setting function has been selected.

If it is determined in step S1 that the automatic channel setting function is selected, the microcomputer 10 controls the second tuner 3 to display the sub-screen (S2). However, it is assumed here that the first tuner 2 is a tuner for tuning the main broadcast signal, and the second tuner 3 is a tuner for tuning the sub broadcast signal.

Thereafter, the microcomputer 10 outputs a control signal to the second tuner 3 to detect a broadcast signal from the current channel on which the main screen is displayed (S3), and then controls the luminance signal processor 5 to control the second tuner. The broadcast signal of the current channel received at (3) is displayed on the sub screen (S4).

Thereafter, the microcomputer 10 checks whether a broadcast signal is detected in the tuned current channel (S5), and if it is determined that the broadcast signal is detected, stores the current channel in memory (not shown) (S6). In addition, the microcomputer 10 controls the on-screen display unit 9 to display the current channel stored in the memory on the screen so that the user can easily identify the set channel.

On the other hand, after performing the above-described step S6 or if it is determined that the broadcast signal is not detected in the above-described step S5, the microcomputer 10 outputs a control signal to the second tuner 3 to the second tuner. After increasing one channel from the current channel tuned in step (3) (S7), the broadcast channel of the main picture tuned by the first tuner 2 and the broadcast channel of the sub picture tuned by the second tuner 3 Check whether it is the same (S8). If it is determined in step S8 that the broadcasting channel of the main screen and the broadcasting channel of the sub screen are different from each other, this indicates that the channel automatic setting function for the entire channel has not been completed, and therefore, the microcomputer 10 has been described above. The process returns to step S3 to repeat the whole process after step S3.

If it is determined in step S8 that the broadcasting channel of the main screen and the broadcasting channel of the sub screen are the same, this indicates that the channel automatic setting function for all channels is completed, and thus the microcomputer 10 automatically sets the channel. The setting function is stopped (S9), the second tuner 3 is turned off, the brightness signal processor 5 is controlled to stop the display state of the sub screen (S10), and all the processes are finished.

Accordingly, while the user watches the main screen, the user can perform the automatic channel setting function through the sub screen.

As described above, according to the channel automatic setting method using the multi screen according to the present invention, the channel automatic setting function is performed by displaying the main broadcasting signal through the main screen and performing the channel automatic setting function through the sub screen. There is an advantage that the user can watch the main screen during.

In addition, by using a separate tuner for performing a multi-screen function to perform the automatic channel setting function, there is an advantage that can use a plurality of tuners efficiently.

Claims (2)

A channel automatic setting method using a multi-screen function of a television having a multi-screen function with first and second tuners; After tuning the main broadcast signal through the first tuner, displaying the main screen; Sequentially tuning sub-broadcast signals from the current channel displayed on the main screen through the second tuner and displaying them on the sub-screen; And detecting a signal level of the sub-broadcast signal sequentially tuned from the second tuner, and when the sub-broadcast signal is detected, storing the current channel from which the broadcast signal is detected. The method of claim 1, further comprising: turning on the sub-screen when the channel automatic setting function is selected; Controlling the second tuner to detect a broadcast signal from a current channel on which a main screen is displayed, and then displaying the broadcast signal on a sub screen; Checking whether a broadcast signal is detected in the current channel displayed on the sub-screen, storing the current channel when the broadcast signal is detected, and sequentially increasing the channel by one channel from the current channel; And if the broadcasting channel of the main screen and the broadcasting channel of the subscreen are the same, and if the broadcasting channel of the main screen and the broadcasting channel of the subscreen are the same, the automatic channel setting function is stopped and the subscreen is turned off. Automatic channel setting method using a multi-screen function, characterized in that to perform the step.