KR19990019215A - Sub-screen Position Correction Device in Cinema Mode for Multi-Screen Televisions - Google Patents

Abstract

According to the present invention, when the cinema mode for the wide screen is executed in the wide / television with the multi-screen playback function, the position of the sub-screen is automatically corrected to the original proper screen position. It provides a sub-screen position correction device in the cinema mode of a multi-screen television.

To this end, according to the present invention, the first and second video signal processing units 12 and 14 process the television broadcast signals of the multiple broadcast channels tuned from the plurality of tuning means 2 and 4 to process the 16: 9 video signals. Cinema mode is executed in a wide television having a multi-screen playback function for simultaneously playing through a main screen and a sub-screen in which a wide screen with a wide screen is formed, and executing a cinema mode for the wide screen so that the vertical screen is played horizontally. The video playback position of the video signal according to the sub-screen processed by the second video signal processor 14 with respect to the video signal according to the main screen processed by the first video signal processor 12 during the video signal processing. Multi-screen position adjusting means 16 for adjusting in accordance with the position correction value, and deflector for performing horizontal / vertical deflection driving for the horizontal deflection screen in addition to the horizontal deflection screen in the cinema mode. Means (24), PIP blanking position changing means (26) for changing the position of the screen reproduction position of the blanking screen for screen display of the sub-screen formed on the main screen in accordance with the execution of the cinema mode based on the position correction value, and the function setting When the cinema mode is selected under the multi-screen playback mode by the means 28, the PIP blanking position changing means 26 controls the position adjustment operation of the multi-screen position adjusting means 16 according to a preset position correction value. It characterized in that it comprises a control means 30 for performing a control for changing the position of the blanking screen.

Description

Sub-screen Position Correction Device in Cinema Mode for Multi-Screen Televisions

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sub-screen position correcting apparatus in a cinema mode of a multi-screen television, and more particularly to a wide screen having a 16: 9 aspect ratio in a multi-screen mode for reproducing a picture in picture (PIP) screen of a multi-screen television. The present invention relates to a sub-screen position correcting apparatus in a cinema mode of a multi-screen television for correcting the position of a sub-screen moving to an inappropriate screen position when a cinema mode is executed.

As is well known, in a general television, a result of processing a video / audio signal by selecting a desired single channel television broadcast signal from a plurality of television broadcast signals transmitted from a plurality of television broadcast stations through a single tuner. Since the video signal is reproduced as a single screen through a CRT (Cathode Ray Tube) device that reproduces one screen, the audio signal is output through a speaker that reproduces the audio of a single channel. If you want to watch the TV broadcasts of the channel you were watching now was not able to watch.

As a result, PIP (Picture In Picture), which allows sub-screens (multi-screens) consisting of multiple screens to be inserted on the main screen (main screen), which is reproduced in one CRT device, to solve such viewing disadvantages. The multi-screen TV with the PIP function allows multiple channels of TV broadcast signals to be tuned and processed simultaneously through the main and sub-screens. The video can be played back.

Through the main / sub picture reproducing function of the multi-screen television, simultaneous channel selection is performed on the multi-channel broadcast program so that the screen can be reproduced simultaneously. It has the advantage of being able to meet simultaneously.

In addition, in such a multi-screen television, a wide television having a 16: 9 aspect ratio is applied to a typical screen having a 4: 3 aspect ratio in order to play the video horizontally with respect to the main screen with more sub-screen reproduction. In this wide television, a cinema function is employed to obtain the same cinema effect as that of a movie theater.

However, when the cinema function is performed in the main / sub picture playback state on a wide television equipped with such a multi screen play function, the sub picture is moved from the original screen position to an inappropriate position by the horizontal deflection state. There is a disadvantage that the viewing effect is halved.

Accordingly, the present invention has been made in view of the above-described circumstances, and when the cinema mode for the wide screen is executed in the wide / television with the multi-screen playback function in the main / sub-screen playback mode, the position of the sub-screen is set to the original position. It is an object of the present invention to provide a sub-screen position correcting apparatus in a cinema mode of a multi-screen television that automatically corrects the position to an appropriate screen position.

According to the cinema mode sub-screen position correcting apparatus of a multi-screen television according to the present invention for achieving the above object, the first and second video signal processing unit transmits a television broadcast signal of a plurality of broadcast channels tuned from a plurality of tuning means. Multi-screen playback function to play the main / sub picture signal and play simultaneously through the main / sub picture with 16: 9 wide screen, and to run the cinema mode for the wide screen so that the vertical screen is played horizontally. In a wide television equipped with a video signal, the video signal according to the sub-screen processed by the second video signal processor with respect to the video signal according to the main signal processed by the first video signal processor when the cinema mode is executed. Multi-screen position adjusting means for adjusting the screen play position of the screen in accordance with the position correction value, and horizontal and horizontal screens in cinema mode. Deflection driving means for performing horizontal / vertical deflection driving for the horizontal and horizontal deflection of the vertical deflection screen, and the screen reproduction position of the blanking screen for screen display of the sub-screen formed on the main screen according to the execution of the cinema mode based on the position correction value. When the cinema mode is selected under the multi-screen playback mode by the PIP blanking position changing means for changing the position and the function setting means, the position adjustment operation of the multi-screen position adjusting means is controlled in accordance with a preset position correction value. Provided is a sub-screen position correcting apparatus in a cinema mode of a multi-screen television, comprising control means for performing control for changing the position of the blanking screen of the blanking position changing means.

According to the present invention configured as described above, when the cinema mode is executed in the state that the main / sub-screen is reproduced according to the multi-screen playback mode in a wide television with a multi-screen playback function, the sub-movement is moved to an inappropriate screen position The screen position is changed based on a preset correction value so that the screen can be played back.

1 is a block diagram showing a sub-screen position correction apparatus in the cinema mode of a multi-screen television according to the present invention;

2 is a view showing a state in which the position of the sub-screen is corrected during mode switching to the cinema mode according to a preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2, 4: tuner, 6, 8: video IF section,

10: multi-screen mode switching unit, 12: first video signal processing unit,

14: second video signal blocking unit, 16: multi-screen positioning unit,

18: signal output unit, 20: CRT,

22: main synchronous separation unit, 24: deflection driving unit,

26: PIP blanking position changing section, 28: function setting section,

30: control unit.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a sub-screen position correcting apparatus in a cinema mode of a multi-screen television according to the present invention. In the apparatus of the present invention, reference numerals 2 and 4 denote multi-screen reproduction from the controller 30 to be described later. Depending on the mode, a plurality of channel channel data for reproducing the main / sub picture are respectively received, and the corresponding broadcast channel is tuned among the plurality of broadcast channels in the receiving antenna, and the RF signal of the tuned broadcast channel is channel tuned. The first and second tuners which are mixed with the local oscillation frequency signal generated by the data and converted into the intermediate frequency signal are output.

Also, reference numerals 6 and 8 denote first and second image IF units which receive intermediate frequency amplification processing by receiving television broadcast signals in the form of intermediate frequency signals tuned through the first and second tuners 2 and 4, respectively. Indicates.

Further, reference numeral 10 denotes a multi-screen playback mode for reproducing the main / sub picture or a mode switching operation for single screen reproducing mode for reproducing a normal single screen under mode control of the controller 30 described later. Represents a multi-screen mode switching unit that provides a reproduction path of a main / sub picture or a signal path for reproducing a single screen for a television broadcast signal according to a plurality of channels from the first and second video IF units 6 and 8. .

In addition, the reference numeral 12 amplifies the composite video signal according to the main screen through the multi-screen mode switching unit 10 in multiple stages, and adjusts the composite video signal according to the main screen such as luminance adjustment and color demodulation processing. A first video signal processing section for outputting as an R / G / B color signal through video processing is shown.

In addition, the reference numeral 14 performs multi-stage signal amplification on the composite video signal of the sub-screen reproduction target through the multi-screen mode switching unit 10, and adds to the main screen from the first image signal processing unit 12. And a second video signal processing section which performs video signal processing synchronously with respect to the synchronization signal separated from the composite video signal, and outputs it as an R / G / B color signal.

Also, reference numeral 16 denotes simultaneous simultaneous compatibility of the main / sub picture of each R / G / B color signal according to the main / sub picture processed by the first and second image signal processing units 12 and 14. In addition to performing signal processing for designating a screen playback area for playback, and executing a cinema mode, the screen playback position for the sub-screen on the main screen is controlled according to the control based on the position correction value described later by the control unit 30. A multi-screen position adjusting unit for adjusting and amplifying and driving an R / G / B color signal according to the main / sub picture of which the playback position of the main / sub picture is adjusted can be reproduced as a multi-screen on the CRT screen 20. Indicates a signal output section to be output.

Reference numeral 22 denotes a main synchronous separation unit for separating a synchronization signal from the composite video signal according to the main screen from the first image signal processing unit 12, and 24 denotes a vertical / horizontal oscillation operation by the separated synchronization signal. And a deflection driver for performing vertical / horizontal deflection driving for the horizontal screen as well as the horizontal screen of the CRT 20 screen according to the execution of the cinema mode.

Reference numeral 26 denotes a PIP blanking position changing section for changing the position of the blanking screen for forming a sub-screen on the main screen under control by a preset position correction value from the controller 30 described later.

Further, reference numeral 28 is composed of a matrix button unit provided in a predetermined portion of the remote control unit for controlling the remote control or the main body of the main body, and selectable switching between the normal single screen playback mode and the multi screen playback mode, and the single screen playback mode or the multi screen playback mode. A function setting section for performing various function operations according to the above and key setting for executing a cinema mode in a multi-screen playback mode is shown.

Reference numeral 30 denotes a control unit that performs execution control on the overall functional operation assigned to the multi-screen television according to the key operation of the function setting unit 28, and the control unit 30 is provided to the function setting unit 28. When the cinema mode is selected while the multi-screen playback mode is executed, the shift driving unit 24 is controlled to perform vertical / horizontal deflection driving according to the cinema mode, and the multi-screen position adjusting unit 16 is performed. Control the position of the blanking screen relative to the PIP blanking position changing unit 26 to be changed based on the position correction value. do.

Next, the operation of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, in the case where the multi-screen playback mode is selected by the function setting unit 28, the control unit 30 selects channel tuning data for allowing a plurality of broadcast channels to be tuned to the first and second tuners 2 and 4, respectively. The first and second image signal processing units of the multiple video channels of the multiple broadcast channels, which are applied and are amplified by the intermediate images by the first and second image IF units 6 and 8, are provided through the multi-screen mode switching unit 10. In (12, 14), video signals are processed as a main picture and a sub picture, respectively.

Then, the screen reproduction position is determined by the multi-screen position adjusting unit 16 for the video signals different from the main screen and the sub-screen processed by the first and second video signal processing units 12 and 14, respectively. Through the amplification driving of the signal output unit 18, the multi-screen reproduction is performed on the CRT screen 20 having an aspect ratio of 16: 9.

In this state, when the cinema mode is selected by the function setting unit 28, the control unit 30 controls the deflection driving unit 24 to perform vertical / horizontal traveling in accordance with the cinema mode. According to the preset position correction value, the multi-screen position adjusting unit 16 adjusts the playback position of the sub-screen on the main screen, and the PIP blanking position changing unit 26 also controls the blanking screen based on the position correction value. The display position value can be changed.

Accordingly, an appropriate second playback position corresponding to the playback position corrected from the first playback position 32 of the sub-screen, which was displayed at an inappropriate position during the execution of the cinema mode, on the CRT screen 20 as shown in FIG. 2. At 34, the sub picture is made playable.

According to the present invention made as described above, in a wide television having a multi-screen playback function, if the cinema mode is selected in the state that the multi-screen playback, the sub-screen that is moved to an inappropriate screen position can be automatically moved to the normal screen position. As a result, there is an advantage that can maximize the viewing effect.

Claims (1)

The first and second video signal processing units 12 and 14 process the main and sub video signals of a plurality of broadcast channels tuned from the plurality of tuning means 2 and 4 to form a 16: 9 wide screen. In a wide television having a multi-screen playback function for simultaneously playing through the main / sub-screen and simultaneously executing the cinema mode for the wide screen so that the vertical screen is played horizontally, When the cinema mode is executed, the video signal according to the sub-screen processed by the second video signal processor 14 with respect to the video signal according to the main screen processed by the first video signal processor 12. Multi-screen position adjusting means (16) for adjusting the screen playback position in accordance with the position correction value, Deflection driving means (24) for performing horizontal / vertical deflection driving for the horizontal deflection screen in addition to the horizontal deflection screen in the cinema mode; PIP blanking position changing means 26 for changing the position of the screen reproduction position of the blanking screen for screen display of the sub-screen formed on the main screen in accordance with the execution of the cinema mode based on the position correction value; When the cinema mode is selected under the multi-screen playback mode by the function setting means 28, the position adjustment operation of the multi-screen position adjusting means 16 is controlled in accordance with a preset position correction value, and the PIP blanking position changing means. And a control means (30) for performing a control for changing the position of the blanking screen of (26).