KR20000034599A - Method for controlling screen in tv having picture in picture function - Google Patents

Abstract

PURPOSE: A method for controlling a screen in a TV having a picture in picture(PIP) function is provided so that a user can designate a position of a main screen when selecting a PIP mode to watch the main and sub-screens at the same time. CONSTITUTION: In a method for controlling a screen in a TV having a picture in picture(PIP) function, when a user selects a PIP mode and does not designate a position of a main screen, the main and sub-screens are outputted in a predetermined position. When the user designates the position of the main screen by a key control, the predetermined position of the main screen is ignored, and thus the main screen is outputted in the designated position. The sub-screen is displayed anywhere except the position of the main screen. Accordingly, the user can output the main screen in the comfortable position.

Description

A screen controlling method for a television with PIP function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a screen of a television. In particular, when a television having a picture in picture (PIP) function is desired, a viewer can designate a position of the main screen when simultaneously viewing a sub-channel of multiple channels in parallel to the main screen. A screen control method of a television having a PIP function.

In general, the PIP (Picture In Picture) function of a television includes two tuners for receiving and tuning a broadcast signal transmitted from a broadcasting station, thereby dividing a screen into a main area and a plurality of sub-areas to simultaneously watch broadcast signals of multiple channels. As a function, the viewer can simultaneously search for or watch other broadcast signals of the sub picture displayed in the sub area while watching the broadcast of the main picture displayed in the main area.

In this case, the PIP process converts two broadcast signals or one broadcast signal (for a sub-screen) into a digital signal, performs image reduction processing for adjusting the screen size, and synthesizes the two broadcast signals to match the desired home screen position. Convert it back to a signal and process it.

Therefore, the PIP function allows the viewer to watch two broadcasts at the same time, so that the user can search for another broadcast on the sub-screen while watching the desired broadcast on the main screen.

1 is a schematic block diagram of a television having a conventional PIP function, and includes a key input unit 10, a microcomputer 20, first and second tuner units 30 and 50, and first and second image signal processing units ( 40 and 60, a PIP processing unit 70, an RGB converter 80 and a monitor 90.

In such a configuration, the key input unit 10 is provided with a plurality of keys for performing the operation of the television to output a key signal corresponding to the user's key operation, and typically by using a remote control that can be input from a remote location A key signal corresponding to a key operation is loaded on a predetermined infrared signal and transmitted, the received infrared signal is received, detected, amplified, and waveform-formed to output the received key signal.

In addition, the microcomputer 20 controls the first and second tuner units 30 and 50, the first and second image signal processing units 40 and 60, and the PIP processing unit 70 based on the key signal from the key input unit 10. Selective control to control the overall operation of the television.

Meanwhile, the first and second tuner units 30 and 50 output broadcast signals received by being tuned to the channels corresponding to the control of the microcomputer 20 to the first and second image signal processing units 40 and 60, respectively.

Next, the first and second video signal processing units 40 and 60 separate the video signals from the broadcast signals from the first and second tuners 30 and 50 and output them to the PIP processing unit 70.

Then, the PIP processing unit 70 processes the respective video signals from the first and second video signal processing units 40 and 60 into a main screen and a sub screen based on the control of the microcomputer 20 to form a single screen. On the basis of the preset position and size of the housewife screen, two video signals are converted into digital signals, the two broadcast signals are synthesized to match the size and position of the housewife screen, and then converted into analog signals. )

On the other hand, the R.G.B converter 80 converts the R.G.B signal, amplifies, and outputs the video signal from the PIP processing unit 70 on the monitor 90.

Next, with reference to the detailed block diagram of FIG. 2 which attached the above-mentioned PIP processing part 70, it demonstrates further.

As shown in the figure, the PIP processing unit 70 includes first and second A / D conversion units 71 and 72, first and second storage units 73 and 74, signal processing unit 75 and D / A. The conversion unit 76 is included.

In this configuration, the first and second A / D converters 71 and 72 convert the respective analog video signals input from the first and second video signal processors 40 and 60 into digital video signals, thereby converting one horizontal signal into one horizontal line. Outputs to the first and second storage units 73 and 74 in line units, respectively.

Then, the first and second storage units 73 and 74 temporarily store the digital video signals from the first and second A / D converters 71 and 72, respectively, and output the digital image signals to the signal processor 75.

On the other hand, under the control of the microcomputer 20, the signal processor 75 may convert the digital video signal for the main screen and the digital video signal for the sub-screen from the first and second storage units 73 and 74. The digital video signal synthesized by one horizontal line unit is applied to the D / A converter 76 in units of horizontal lines corresponding to the position and size of the sub-screen.

Then, the D / A converter 76 converts the digital video signal obtained by synthesizing the main / sub picture from the signal processor 75 into an analog video signal and outputs the analog video signal to the RGB converter 80. 80 processes this and outputs it to the monitor 90 so that the viewer can watch the housewife screen at the same time.

However, such a conventional TV having a PIP function has a problem in that the main screen and the sub-screen are fixed in the PIP mode and thus the user cannot display the main screen at a desired position.

Therefore, the present invention seeks to find a way for the viewer to set the position of the main screen in the PIP mode.

The present invention has been made to solve the above problems, and provides a screen control method that allows the viewer to specify the position of the main screen when you want to simultaneously watch the main screen and the sub-channel of the multi-channel in the PIP mode. There is this.

1 is a schematic block diagram of a television having a general PIP function;

2 is a detailed block diagram of the PIP processing unit of FIG.

3 is a flow chart showing a main / sub-screen output process according to the present invention

Explanation of symbols on the main parts of the drawings

10: key input unit 20: micom

30: first tuner 40: first video signal processor

50: second tuner 60: second video signal processor

70: PIP processing unit 71: first A / D conversion unit

72: first storage unit 73: second A / D conversion unit

74: second storage unit 75: signal processing unit

76: D / A converter 80: R.G.B converter

90: monitor

100: first tuner 120: second tuner

200: microprocessor 220: key input unit

240: memory 260: timer

300: image processor 320: image amplifier

340: vertical / horizontal synchronization processor 360: PIP (Picture In Picture) processing unit

400: CRT (Cathode-ray Tube) 500: Voice Processor

520: voice amplifier 600,620: speaker

In order to achieve the above object, the screen control method of the present invention includes determining a power-on state, determining whether a PIP mode is selected, performing a different television function when the PIP mode is not selected, and , If the PIP mode is selected, determining whether the user has specified the location of the main screen, if the location of the main screen is not specified, outputting the housewife screen to the default location, and specifying the location of the main screen. It is characterized in that the process of outputting the main screen to the sub-screen in the area excluding the position of the main screen.

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

The television employed in the embodiment of the present invention is the same as the television having the conventional general PIP function shown in FIG.

That is, the key input unit 10 includes a plurality of keys for performing the operation of the television and outputs a key signal corresponding to the user's key operation, and based on the key signal from the key input unit 10, the first and second keys are used. The microcomputer 20 controls the overall operation of the television by selectively controlling the tuner units 30 and 50, the first and second video signal processing units 40 and 60, and the PIP processing unit 70, and the control of the microcomputer 20. First and second tuner units 30 and 50 for outputting the broadcast signals tuned and received to the channels corresponding to the first and second image signal processing units 40 and 6, respectively, and the first and second tuners 30, respectively. First and second video signal processing units 40 and 60 for separately outputting the video signals from the broadcast signals from the first and second video signals, and the first and second video signal processing units 40 and 60 under the control of the microcomputer 20. PIP processing unit 70 and PIP processing unit 70 to process each video signal from the main / sub-screen to form a single screen and output In order to display a video signal to the monitor site 90 includes a R.G.B converts R.G.B conversion section 80 and the monitor 90, and outputting the amplification process.

Although not shown, the apparatus includes a voice signal processor and a speaker for detecting an audio signal from the broadcast signal output from the first video signal processor 40 and outputting the audio signal to a speaker through a predetermined process.

Next, a detailed description will be given with reference to a flowchart of FIG. 3 attached to a screen control process of a television having a PIP function according to a preferred embodiment of the present invention.

First, the microcomputer 20 determines whether the user has powered on the key operation of the key input unit 10 in the standby state (S100).

Subsequently, it is determined whether the user selects the PIP mode by operating the key input unit 10 in the power-on state (S110).

If it is determined that the PIP mode is not selected, the user controls the component to perform other TV functions selected by the key input unit 10, for example, channel selection / change, volume adjustment, color adjustment, and the like (S120).

However, when the user watches the current channel on the main screen and selects the PIP mode to simultaneously view or simultaneously watch a program that is being broadcast on another channel on the sub screen, the PIP processing unit 70 displays position information on which the main screen and the sub screen are output. It is determined whether the user has specified the output position of the main screen through the key input unit 10 in order to provide to (S130).

If the user doesn't need to watch the main screen in a specific position, and the user does not specify the location to output the main screen, the main screen is displayed in the default position (for example, the screen other than the sub screen is the main screen). The PIP processing unit 70 controls the PIP processing unit 70 to output the channels of the sub screens in the order of the channels selected in the remaining areas where the main screen is not output (S140, S160).

However, if the user selects the PIP mode and specifies the output position of the main screen (for example, the center) in order to watch the main screen at a specific position, the subscreen is displayed in the remaining areas to output the main screen at the designated position. The PIP processing unit 170 is controlled to output (S150 and S160).

This allows the user to watch more comfortably while the main screen is displayed at the desired position.

As described above, when the user designates the position of the main screen in the PIP mode, the present invention outputs the main screen at the designated position and allows the sub-screen to display and display the main screen at a desired position. It is an effect that can be provided.

While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as set forth in the claims. Anyone can see it easily.

Claims (1)

Determining the power-on state, determining whether the PIP mode is selected, performing other television functions when the PIP mode is not selected, and whether the user has specified the position of the main screen if the PIP mode is selected. Judgment process, the process of outputting the housewife screen to the default position if you do not specify the position of the main screen, and if you specify the position of the main screen, output the main screen to the specified position and A screen control method for a television having a PIP function, comprising the step of outputting a screen.