KR0134545B1 - Device and mtehod of selectively presenting pictures - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a screen editing apparatus for displaying two screens on one screen by setting a desired screen at a desired position at a desired position in a video device. By controlling the main / sub picture to be monitored simultaneously only when the sub picture is in a specific position, the main screen can be recorded while watching the main / sub simultaneous screen or the main screen or sub screen according to the needs of the viewer.

Description

Optional monitor output device and output method of screen

1 is a block diagram of a selective monitor output device of the screen according to the present invention.

2 is a flowchart illustrating a method of outputting a selective monitor of a screen according to the present invention.

3 is a view illustrating a position surface of a sub-screen according to the present invention.

4 is a block diagram of a general screen editing apparatus.

* Explanation of symbols for main parts of the drawings

10: main screen video signal unit 20: buffer

30: sub-screen video signal unit 40: PIP processing unit

50: main / sub picture display signal 60: mixing section

70: switching unit 80: microcomputer

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a screen editing apparatus (hereinafter referred to as Picture In Picture PIP) that displays two screens on one screen by setting a desired screen at a desired position at a desired position in a video device. By controlling the main / sub picture to be monitored at the same time only when the sub picture is in a specific position, one screen can be selected to record only the main picture while watching the main / sub picture or the main picture or sub picture depending on the needs of the viewer. It relates to a monitor output device and an output method.

In general, a screen editing apparatus capable of displaying two screens on one screen by storing an incoming video signal for each field and setting a desired image to a desired portion is a television receiver, a video as shown in FIG. A luminance / chromatic separation unit 110 for separating a complex video signal flowing from a signal input source such as a camera into a luminance signal Y and a chroma signal C; A decoder (120) for decoding the luminance signal (Y) and the chroma signal (C) output from the luminance / chromatic separation unit (110) into red (R), green (G), and blue (B) color signals; An analog / digital converter 130 for converting the analog R, G, and B signals output from the decoder 120 into color signals R, G, and B in digital form, respectively; A memory unit 140 for storing at least two field image data output from the analog / digital change unit 130 for each field; A microcomputer 150 for outputting an edit / normal mode control signal, an edit section designation address setting value, and a field-specific control signal when key data is input using an edit mode designation key mounted on the key input means; A memory controller 160 for outputting a control signal for field information to be edited under the control of the microcomputer 150 to the memory unit 140; According to the edit / normal mode control signal outputted from the microcomputer 150 and the edit section designation address, the memory unit generates a row / column address for the main screen and a row / column address for the sub-screen as the edit screen. An editing area address generation unit 170 for outputting to the subfield and outputting an editing section setting control signal when a sub-screen row / column address occurs; A multiplexer (180) for selecting and outputting a row or column address output from the editing area address generator (170) according to a selection control signal output from the memory controller (160); A screen selection switch (SW2) for reading out the main screen field or the sub screen field data stored in the memory unit 140 according to the address signal output from the editing area address generation unit 170; A screen selection control switch SW1 for controlling the screen selection switch SW2 to select a subscreen field according to an editing section setting control signal outputted from the editing area address generation unit 170; A digital / analog converter 190 for converting digital data transmitted through the screen selection switch SW2 into an analog signal; The encoder 200 is configured to encode and output an analog signal output from the digital / analog converter 190 into a composite video signal.

In the conventional screen editing apparatus configured as described above, a composite video signal flowing from a signal input source such as a television receiver or a video camera is separated into a luminance signal (Y) and a chroma signal (C) by the luminance / chromatic separation unit (110). After that, the decoder 120 decodes the red (R), green (G), and blue (B) color signals and outputs the analog / digital converter 130 to the analog / digital converter 130. The red (R), green (G), and blue (B) analog color signals of the decoder 120 are respectively digital (R), green (G), blue through the analog / digital converter 130. (B) The main screen is converted into a color signal and stored in the first field memory of the memory unit 140, and the sub-screen used as a still image is stored in the first field memory of the memory unit 140.

As described above, the image data stored in the memory unit 140 is stored for each field under the control of the microcomputer 150, and the microcomputer 150 uses key data using an edit mode designation key mounted in a key input unit. Is inputted, the first field memory of the memory unit 140, which is the main screen, is stored, and the sub-screen second field memory, which is the still field, is stored as a key input for any field, and edited from key input according to the editing position. The field to be edited in the area address generator 170, i.e., the row / column address (X1, Y1) for sub-screens, the edit row / column address designation address increment (ΔX, △ Y), and the field to be edited, i.e., the main screen. Row / column addresses (X2, Y2) are output.

Meanwhile, the memory controller 160 receives the control signal for the field information to be edited from the microcomputer 150 that recognizes the letter mode control signal and the address for the edit position, and stores the field memory stored in the memory unit 140. Control to output the row / column clock signal to the edit area address generator 170. FIG.

The edit area address generation unit 170 receives an edit / normal mode control signal output from the microcomputer 150 and an edit position set by a user by a key input unit, and outputs the row from the memory control unit 160. The multiplexer 180 which outputs the edited row / column address according to the / column clock and receives the row or column address output from the edit area address generator 170, is selected from the memory controller 160. According to a control signal, a row or column address output from the editing area address generator 170 is selected and output to the memory 140.

On the other hand, the main screen field or the sub-screen field data stored in the memory unit 140, the screen selection switch (SW2) is negative in accordance with the editing section setting control signal output from the edit area address generation unit 170. The digital / analog converter 190 is transmitted to the digital / analog converter 190 through the screen selection switch SW2 under the control of the screen selection control switch SW1 for controlling the screen field to be selected. After converting the data of the digital form into an analog signal form, the analog signal output from the digital / analog converter 190 through the encoder 200 is encoded and output as a composite video signal.

However, in the conventional screen editing apparatus, since the main / sub picture is always monitored together or only the main screen can be monitored at the same time, it is necessary to watch only one monitor output while simultaneously watching the main / sub picture such as video recording. If you want to monitor the screen at the same time can not be selected, and therefore there was a problem that can not meet the needs of various consumers.

Accordingly, the present invention has been devised to solve the above-mentioned problems of the prior art, and when the PIP function of the television is selected, the main screen and the sub screen are simultaneously monitored only when the sub screen is located at a specific position. Accordingly, an object of the present invention is to provide an optional monitor output device and a method of outputting a screen so that only the main screen can be recorded while watching the main / sub-simultaneous screen or the main screen or sub-screen.

According to the present invention for achieving the above object, when a screen superimposition operation is started in a television having a screen superimposition function, a position shift key is input to determine the position of the sub screen while moving the position of the sub screen. When the position is located at a specific location, it is characterized in that it is configured to monitor the main / screen under the control of the microcomputer.

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

The selective monitor output device of the screen according to the present invention includes a main screen video signal unit 10 for forming a video signal of the main screen as a normal screen, as shown in FIG. A first buffer 20A for buffering the video signal formed by the main screen video signal unit 10; A sub picture video signal unit 30 for forming a video signal of a sub picture which is an edit screen; A PIP processing unit 40 for processing the video signal formed by the main screen video signal unit 10 and the video signal formed by the sub-screen video signal unit 30 to overlap the screen; A main / sub picture video signal unit 50 for forming a video signal of a main picture and a sub picture superimposed on the screen by the PIP processing unit 40; A second buffer 20B for buffering an image signal formed by the main / sub picture image signal unit 50 to output a CRT display image processing signal; A third buffer 20C for buffering the video signals of the main screen and the sub-screen superimposed on the screen through the PIP processing unit 40; A mixing unit 60 for synthesizing the video signal buffered in the first buffer 20A and the video signal buffered in the third buffer 20C; A switching unit (70) for selecting and outputting the main screen image signal buffered by the first buffer (20A) or the main / sub picture superimposed video signal synthesized by the mixing unit (60); A fourth buffer 20D for buffering the signal selected by the switching unit 70 and outputting the buffered signal to the monitor; The microcomputer 80 outputs a switching control signal for controlling the switching operation of the switching unit 70.

Referring to the operation and effect of the present invention configured as described above in detail.

The video signal of the main screen, which is the normal screen formed by the main screen and the video signal unit 10, is outputted to the PIP processing unit 40 and buffered through the first buffer 20A, followed by mixing unit 60 and switching unit ( 70 is output to the sub-screen video signal unit 30, the sub-screen video signal is an edit screen formed by the PIP processing section 40, the main screen and the sub-screen superimposed through the PIP processing section 40 The video signal is buffered through the main / sub picture video signal unit 50 and the second buffer 20B to output a CRT display image processing signal.

On the other hand, the video signal of the main screen and the sub-screen superimposed by the PIP processing unit 40 is buffered through the third buffer 20C and then output to the mixing unit 6, so that in the first buffer 20A It is synthesized with the buffered video signal and input to one terminal of the switching unit 70.

The switching unit 70 is a main screen image signal buffered by the first buffer 20A by the switching control signal output from the microcomputer 80 or a main / sub-screen superimposed image synthesized by the mixing unit 60. After the signal is selected, the switching selected signal is buffered through the fourth buffer 20D and output to the monitor.

The microcomputer 80 which outputs the switching control signal to the switching unit 70 uses the position shift key to change the position of the sub-screen from position 1 to position 2 as shown in FIG. Is displayed on the main screen while moving the position from the position of 3 to the position of 3 in the order of 3, and when the position of the sub-screen is displayed at the position of 2, a flip-flop (shown in the microcomputer 80) Outputting a high signal through the switching unit 70 selects a signal input from the mixing unit 60 and buffers it through the fourth buffer 20D, and then displays the main / second simultaneous picture as a monitor. Outputting a low signal through a flip-flop (not shown) inside the microcomputer 80 when the sub-screen is displayed at a position of 1, 3 or 4, the switching unit 70 outputs a low signal. Prize After selecting the signal input from the first buffer 20A and buffering it through the fourth buffer 20D, only the main screen is output to the monitor.

Therefore, the main / sub-simultaneous screen or only the main screen can be selected and output to the monitor according to the position of the sub-screen moved by the position shift key.

A first step (S1) of judging whether the operation of the screen superimposition device (PIP) has started as shown in FIG. A second step (S2) of moving the position shift key for shifting the position of the sub-screen on the main screen when the operation of the screen superimposition device (PIP) starts; A third step (S3) of repeatedly shifting the position of the sub-screen from the position of 1 by the input position shift key; A fourth step S4 of determining whether the position of the sub-screen is at the position 2; When the position of the sub picture is at the position 2, the high signal is output, thereby sequentially performing the fifth step S5 of monitoring the main picture and the sub picture at the same time.

As described in detail above, the present invention can meet the needs of consumers by variously utilizing the function of the monitor output in the case of a TV having a screen superimposing function, and when the video recording is performed, Since only the main screen can be recorded while watching the main screen or sub-screen, convenience of use can be pursued, thereby improving the functionality and efficiency.

Claims (2)

A main screen video signal unit 10 for forming a video signal of a main screen which is a normal screen; A first buffer 20A for buffering the video signal formed by the main screen video signal unit 10; A sub picture video signal unit 30 for forming a video signal of a sub picture which is an edit screen; A PIP processing unit 40 for processing the video signal formed by the main screen video signal unit 10 and the video signal formed by the sub-screen video signal unit 30 to overlap the screen; A main / sub picture video signal unit 50 for forming a video signal of a main picture and a sub picture superimposed on the screen by the PIP processing unit 40; A second buffer 20B for buffering an image signal formed by the main / sub picture image signal unit 50 to output a CRT display image processing signal; A third buffer 20C for buffering the video signals of the main screen and the sub-screen superimposed on the screen through the PIP processing unit 40; A mixing unit 60 for synthesizing the video signal buffered in the first buffer 20A and the video signal buffered in the third buffer 20C; A switching unit 70 for selecting and outputting a main screen video signal buffered by the first buffer 20A or a main / sub picture superimposed video signal synthesized by the mixing unit 60 according to a predetermined switching control signal; A fourth buffer 20D for buffering the signal selected by the switching unit 70 and outputting the buffered signal to the monitor; And determining whether or not the sub-screen moving on the main screen is at a predetermined position of the main screen according to the position mover input by the user, and controlling the switching operation of the switching unit 70 according to the determination result. Optional monitor output device of the screen, characterized in that composed of a microcomputer (80) for outputting a control signal. A first step S1 of determining whether an operation of the screen overlapping device PIP has started; A second step (S2) of inputting a position shift key for shifting the position of the sub-screen on the main screen when the operation of the screen superimposition device (PIP) starts; A third step (S3) of repeatedly shifting the position of the sub-screen from the position of 1 by the input position shift key; A fourth step (S4) of determining whether the position of the sub-screen is at a predetermined position; And outputting a corresponding control signal when the position of the sub-screen is at the predetermined position, thereby sequentially operating in a fifth step (S5) of simultaneously monitoring the main screen and the sub-screen. .