KR100268379B1 - Channel setting method and apparatus of using sub picture - Google Patents

Abstract

PURPOSE: An apparatus for setting a channel using a sub-screen is provided to identify contents prestored in a present set channel through the sub-screen, before a user sets up a program channel and stores the program channel. CONSTITUTION: A channel setting device decides whether tuning data are prestored in a setting-target program channel(207). If so, the channel setting device tunes broadcasting signals of the prestored tuning data through the second tuner. The channel setting devices displays the tuned broadcasting signals on a sub-screen(209), and informs a user of contents prestored in the program channel. The channel setting device stores one among present tuning data of the first tuner and the prestored tuning data of the second tuner in the program channel, according to a user identification result(211). If the channel setting device stores the prestored tuning data of the second tuner, the channel setting device changes a setting-target program channel of the present tuning data.

Description

Channel setting method and device using sub-screen

The present invention relates to a multimedia product having a sub-screen function, and more particularly, to a channel setting method and apparatus using a sub-screen which can check data previously stored in a corresponding channel through a sub-screen before setting and storing a program channel. It is about.

Generally, multimedia products with sub picture (PIP, POP, multi-window) functions include TVCR, TV with CDP, and TV with DVD. In a conventional multimedia product having a sub-screen function, a manual search was performed to tune a frequency having a broadcast signal, and the user could set and store the tuning data at an arbitrary program channel.

However, in setting and storing the program channel as described above, it is inconvenient to set the program channel more preferably because the contents of the corresponding channel cannot be checked before storing.

Accordingly, an object of the present invention is to provide a channel setting method using a sub-screen which allows a user to check whether or not to save the contents previously stored in the currently set channel before setting and storing the program channel so as to solve the above problems. Is in.

Another object of the present invention is to provide a channel setting apparatus for implementing a channel setting method using a sub-screen.

1 is a block diagram showing the structure of a channel setting apparatus for explaining an embodiment of the present invention;

2 is a flowchart illustrating a channel setting method using the apparatus of FIG. 1;

※ Explanation of code for main part of drawing

11: key input unit 12: first tuner

13: mother screen image signal processor 14: control unit

15: storage unit 16: the second tuner

17: sub-screen image signal processing unit 18: switching unit

19: OSD signal processing unit 20: Synthesis unit

21: CRT

The channel setting method according to the present invention for achieving the above object comprises the first step of setting the tuning data to the desired program channel by searching for a frequency in which a broadcast signal exists through a first tuner of a plurality of tuners; If any tuning data is pre-stored in the program channel set in step 1, the second step of tuning the broadcast signal of the pre-stored tuning data through the second tuner of the plurality of tuners, and the broadcast signal of the first step On the first screen of the screen, the second step of displaying the broadcast signal of the second step on the second screen of the two screens to confirm the contents stored in the program channel to the user, and the user confirmation result of the third step According to the fourth step of maintaining the tuning data previously stored in the program channel as it is or changing to the current tuning data of the first tuner set therein It includes.

According to another aspect of the present invention, there is provided a channel setting apparatus including a plurality of tuners, a key input unit for applying a key input signal for executing a manual search, and pre-stored contents of a currently set program channel. A control unit controlling to store the program channel, a video signal processing unit for processing a broadcast signal input from each tuner under control of the control unit, and outputting a broadcast signal received from each video signal processing unit under control of the control unit on the screen It includes a display unit for.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the structure of a channel setting apparatus for explaining an embodiment of the present invention. As shown, the channel setting apparatus according to the present invention includes a key input unit 11 for generating a key input signal such as a channel setting signal, and the like, and the key input unit 11 controls the respective components according to the key input signal as a whole. The control unit 14 is connected. The control unit 14 is connected to the control unit 14 and the storage unit 15 to enable input and output. On the other hand, the present channel setting apparatus is provided with a first tuner 12 which receives the broadcast signal of the mother screen under the control of the control unit 12. The mother screen image signal processor 13 is connected to the first tuner 12. The apparatus further includes a second tuner 16 which receives the broadcast signal of the sub picture under the control of the control unit 14. The sub-screen image signal processor 17 is connected to the second tuner 16. On the other hand, the apparatus includes an OSD signal processing unit 19 for signal processing to display the OSD screen under the control of the control unit 14, among the signals input from the sub-screen image signal processing unit 17 and the OSD signal processing unit 19 It is provided with a switching unit 18 for selecting one and outputting to the synthesis unit 20. The synthesis unit 20 connected to the output terminal of the switching unit 18 synthesizes the mother screen input from the mother screen image signal processing unit 13 and the sub screen and OSD screen input from the switching unit 18, and the synthesis unit 20. The broadcast signal synthesized in FIG. 9 is configured to be displayed on the CRT 21.

The operation of the channel setting apparatus according to the present invention configured as described above will be described in detail with reference to FIG.

2 is a flowchart illustrating a channel setting method using the apparatus of FIG. 1. Here, the dotted line portion shows the channel setting method according to the present invention.

First, the user inputs the key of the manual search mode for setting the program channel through the key input unit 11 (step 201). The control unit 14 presets the minimum and maximum values of the frequency initial values in advance in order to detect broadcast frequencies from the lowest frequency to the highest frequency band. Therefore, the control unit 14 which has received the key input of the manual search mode from the key input unit 11 first supplies the manual search signal corresponding to the initial value to the first tuner 12. The first tuner 12 starts the search of the broadcast frequency based on the manual search signal from the control unit 14 (step 202). As the control unit 14 outputs the tuning signal for detecting the program channel, the first tuner 12 changes the frequency for setting the program channel while increasing the frequency (step 203). The first tuner 12 determines whether a synchronization signal is detected at the corresponding frequency (step 204). The first tuner 12 detects the frequency signal by stopping the frequency at which the synchronization signal is detected (step 205). The first tuner 12 outputs a broadcast signal (for example, KBS 1) corresponding to the frequency signal detected in step 205 to the mother screen image signal processor 13. The mother screen video signal processor 13 processes the video signal to display the broadcast signal on the mother screen and outputs the broadcast signal to the CRT 21 through the synthesizer 20. The CRT 21 displays the input mother screen video signal for the user to see. At this time, the broadcast signal of KBS 1 is displayed on the CRT 21. The user sets a program channel through the key input unit 11 (step 206). Here, when the user sets the broadcasting signal of KBS 1 currently displayed on the mother screen to program channel 1, the controller 14 transmits the tuning data of program channel 1 previously stored in the storage unit 15 to the second tuner 16. Output (step 207). For example, if the tuning data of KBS 2 is pre-stored as the program channel 1 in the storage unit 15, the second tuner 16 tunes the channel of the tuning data received from the control unit 14, that is, KBS 2, and the sub-screen image. The signal is output to the signal processor 17. The sub-screen video signal processor 17 processes the video signal to display the broadcast signal on the sub-screen, and outputs the video signal to the synthesizer 20 through the switching unit 18. Here, the switching unit 18 selectively switches the signal input from the sub-screen image signal processing unit 17 and the input signal from the OSD signal processing unit 19 for outputting the OSD screen to the synthesizing unit 20. Play a role. The synthesizing unit 20 synthesizes the mother screen and the sub-screen through the normal synthesis process and outputs the synthesized picture to the CRT 21. As a result, the KBS 1 broadcast to be set to the current program channel 1 is output on the mother screen of the CRT 21, and the KBS 2 broadcast of the program channel 1 that is previously stored is output on the sub screen (step 208). If the user wants to change the setting contents to the tuning data of the channel corresponding to the mother screen after checking the preset contents of the previously stored program channel 1 through the sub screen, or if the sub channel does not have the setting contents of the program channel 1, the key input unit Input channel storage key through (11). The controller 14 determines whether the current tuning data is stored according to the key input signal from the key input unit 11 (step 209). When the controller 14 stores the tuning data corresponding to the current KBS 1 as the program channel 1 as a result of the determination, the controller 14 issues a storage command to the storage unit 15. Accordingly, the storage unit 15 stores corresponding tuning data of KBS 1 in the program channel 1 (step 210). If the user wants to maintain the previous program channel and stores it under another channel number, the control unit 14 returns to step 206 of the program channel setting and controls to perform the same process again.

As described above, the present invention displays the contents of the program channel to be stored through the sub-screen, so that the user can check the previously stored contents, thereby providing an effect of easily setting the program channel.

Claims (4)

A method of setting a tuning channel at a time by searching a frequency in which a broadcast signal exists through a first tuner and setting the tuning data to a desired program channel, wherein the tuning data is pre-stored in the target program channel. The first step to do; A second step of tuning a broadcast signal of previously stored tuning data through a second tuner of the plurality of tuners when the predetermined tuning data is pre-stored in the setting target program channel as a result of the first step; A third step of confirming contents previously stored in the program channel by displaying the broadcast signal tuned from the second tuner on a sub-screen; A fourth step of storing one of the current tuning data of the first tuner and pre-stored tuning data of the second tuner in the program channel according to the user confirmation result of the third step; And storing the previously stored tuning data of the second tuner in the fourth step, changing the program target channel of the currently tuned data of the first tuner to return to the first step. Channel setting method using. The channel setting using the sub-screen according to claim 1, wherein if the tuning data is not stored in the setting target program channel, the tuning data is stored in the setting target program channel. Way. A multimedia apparatus having a sub picture function, comprising: a first tuner; A second tuner; A key input unit for applying a key input signal for setting a program channel; And when tuning data is pre-stored in a program channel to be set when a key signal for setting the tuning data of the first tuner as a program channel is input, the preset tune data is controlled to be tuned by the second tuner. And a control unit for controlling one of the tuning data of the first tuner and the previously stored tuning data to be programmed as a program channel by outputting the broadcast signal to the sub-screen. 5. The channel setting apparatus of claim 4, wherein the first and second tuners have the same tuning characteristics to tune the same broadcast signal to the same tuning data.

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