KR200173614Y1 - picture signal dividing system - Google Patents

Abstract

The present invention relates to an image segmentation apparatus, comprising: receiving a TV signal and outputting a TV signal; video input means for outputting a video signal as a plurality of external input signals and a Y / C signal as a luminance / color signal; A comb filter for making the Y-BV signal output from the video input means into a Y / C signal, and a first video receiving a Y / C signal output from the comb filter and selecting one of a plurality of signals to output the Y / C signal; Switching means; second video switching means for selecting and outputting one of a plurality of CVS signals output from the video input means; and: primary and secondary signals for outputting the first and second video switching means. a microcomputer for outputting through a main screen and a sub screen, and for converting an image to each screen output by an external command signal; The microcomputer is controlled by the microcomputer, receives the AV signal, performs a PIP function, selects a video signal output on the subscreen, and corresponds to the microcomputer so that the position of the main screen and the subscreen can be mutually converted. It includes a selection switch means for outputting a command signal to the display, and when there is no external input can watch TV broadcast, and additionally display a sub-screen on the screen of the liquid crystal projector, the main screen and the sub-screen Due to the feature that can be converted to position has the effect of increasing the convenience and user convenience of the device.

Description

Image splitting device {picture signal dividing system}

The present invention relates to an image segmentation device, and more specifically, a liquid crystal display (LCD) projector uses a picture in picture (PIP) function among a plurality of inputs. The present invention relates to an image splitting apparatus capable of dividing a screen and outputting a main screen or a sub-screen.

Fig. 3 is a block diagram showing the structure of a conventional liquid crystal projector according to the present invention.

As shown in FIG. 3, a conventional liquid crystal projector is constructed as follows.

A video input unit 15 which receives a plurality of external inputs,

A comb filter 20 that receives the video signal cvbs input to the video input unit 15;

A video switching unit 32 which receives a signal output from the comb filter 20 and a video signal directly output from the video input unit 15 and outputs an image signal with a luminance signal and a color signal;

A corresponding color signal according to the image signal Y / C output from the video switching unit 32

An LCD processor 70 that outputs R, G, and B;

Screen control signal (OSD-R, OSD-G, OSD-B, OSD-S / W) that can adjust the brightness or color of the screen according to the signal output from the LCD processor (70) OSD: on screen display The microcomputer 40 outputs a signal to control the LCD processor 70.

In the conventional LCD projector as described above, when a video signal input to the video input unit 15 is selected and input to the LCD processor 70, the LCD processor 70 reproduces the input video signal as an original image. Color, bright, contrast, tint, etc. are adjusted by the control signal of the microcomputer 40, so that a clear image is reproduced.

However, when there is no video signal input to the video input unit 15 from the outside, since there is no video signal to be processed, the image cannot be reproduced, so there is no image output through the LCD.

On the contrary, when a plurality of video signals input to the video input unit 15 is reproduced, only one video signal is reproduced as an image. Therefore, it is not possible to simultaneously view two screens by adding a video signal.

This invention is to solve the above-mentioned disadvantages, built-in the IP function that can output a plurality of screens in the LCD projector, which is an image splitting device, if there is no input of the video signal to be output TV The TV broadcast can be received by receiving a signal, and when there are a plurality of video signal inputs, each video signal can be arbitrarily selected to output a selected image through the main and sub screens. An object of the present invention is to provide an image splitting apparatus capable of translating positions of selected images.

1 is an overall block diagram of an image segmentation apparatus according to the present invention;

2 is a block diagram showing the overall configuration of the image segmentation apparatus according to the present invention;

Fig. 3 is a block diagram showing the structure of a conventional liquid crystal projector according to the present invention.

As a means for achieving the above object, the constitution of the present invention is

Video input means for receiving a TV signal and outputting a composite video burst signal (CVBS) signal, and outputting a video signal of a plurality of external input signals and a Y / C signal of luminance / color signals. and:

A comb filter for converting the AV signal output from the video input means into a Y / C signal;

First video switching means for receiving a Y / C signal output from the comb filter and selecting and outputting one of a plurality of signals;

Second video switching means for selecting and outputting one of a plurality of CVS signals output from the video input means;

Select the signal output from the first and second video switching means to output through the main (sub) screen, and to display the image of the main (sub) screen output by the external command signal A microcomputer to convert each other;

A PI unit controlled by the microcomputer and configured to receive a PI signal to perform a PI function;

And a selection switch means for selecting a video signal output on the sub-screen and outputting a command signal corresponding to the microcomputer so that the main screen and the sub-screen are mutually shifted.

By the above configuration. With reference to the accompanying drawings, the most preferred embodiment that can be easily carried out by those skilled in the art of the present invention will be described in detail.

1 is a block diagram showing a PI function of an image segmentation apparatus according to the present invention;

Fig. 2 is a block diagram showing the overall configuration of the image segmentation apparatus according to the present invention.

As shown in the accompanying Figure 1, the configuration of the image segmentation apparatus according to the embodiment of the present invention,

A video input unit 15 receiving a TV signal and inputting a plurality of external input signals to output a TV signal and a Y / C signal;

A comb filter 20 for converting the CV signal BBS of the signal output from the video input unit 15 into a Y / C signal and outputting the Y / C signal;

A first video switching unit 30 receiving a Y / C signal Y / C output from the comb filter 20 and a Y / C signal Y / C directly output from the video input unit 15; ,

A Y / C mix 25 which receives a Y / C signal (Y / C), which is a signal output from the video input unit 15, converts the Y / C signal into a CV signal and outputs the Y / C signal;

A second video switching unit 35 receiving the Y-BV signal CVBS output from the Y / C mix 25 and the video input unit 15;

Select one of the plurality of Y / C (Y / C) and CVBS signals (CVBS) input to the first and second video switching unit (30, 35) to be output to the main screen and sub-screen A microcomputer 40 for changing the position of the main screen and the sub-screen to output the screen, and controlling the input and output signals;

It receives the CVS signal (CVBS) output from the second video switching unit 35 and performs a function of dividing the screen further into the main screen, and the Azubi signal (R, G, B) and the switching signal PI unit 60 for outputting (S / W),

Y / C signal (Y / C) output from the first video switching unit 30, Algibi signals (R, G, B) and switching signal (S / W) output from the PI unit 60 And synthesized, and synthesized with a plurality of screen control signals (OSD-R, OSD-G, OSD-B, OSD-S / W) output from the microcomputer 40 to finally output in the form of Algibi Processor (70),

A selection switch for outputting a signal for adding a sub-screen by operating a switch, selecting a signal corresponding to the main screen and a sub-screen, and outputting a signal to the microcomputer 40 for converting positions of the main screen and the sub-screen to each other. Part 50 is made.

The microcomputer 40,

The first and second video switching units 30 and 35, an SCL clock signal, and an SDA (serial data) data signal are input to and output from the microcomputer 40 and the microcomputer 40. Only one of the plurality of signals is selected by the control of the output to the LCD processor 70 and the IP IC 60, respectively, the LCD processor 70 also inputs and outputs the SL signal and the SD signal.

The video input unit 15,

It includes a tuner 10 for receiving a TV signal and outputting a TV signal.

The operation of the image segmentation apparatus according to the embodiment of the present invention by the above configuration is as follows.

Part of the external input signal input to the video input unit 15 is a signal output from a video signal or other external device, which is a comb filter 20 to become an image signal of a Y / C signal (Y / C). Is converted to and output.

In addition, the TV signal is received through the tuner 10 included in the video input unit 15.

The CV signal CVBS, which has become the Y / C signal Y / C by the comb filter 20, is formed together with the Y / C signal Y / C output directly from the video input unit 15. 1 is output to the video switching unit 30.

One Y / C signal among the plurality of input signals in the first video switching unit 30 is an image signal corresponding to a main screen, and inputs and outputs a microcomputer 40, a clock signal, and a data signal. do.

In this case, when a sub-picture is added to the main screen, the signal output from the video input unit 15 is also output to the second video switching unit 35, and a Y / C signal of the output signals is Y / C. ) Is converted into a YBV signal in the Y / C mix 25 and output to the second video switching unit 35, and all other signals are output as a CVB signal CVBS.

The SV signal output from the first video switching unit 35 is an image signal corresponding to a sub-screen, and is output to the PI skin 60 having a function of adding a sub-screen to the main screen.

The eye skin 60 is controlled when the sub screen is added to the main screen under the control of the microcomputer 40, and the position where the sub screen is located.

Azubi signals R, G, and the like output from the eye skin 60 having an image signal corresponding to a Y / C signal Y / C output from the first video switching unit 30 and a sub-screen B) and the switching signals S / W are input to the LCD processor 70.

Screen control signals (OSD-R, OSD-G, OSD-B, OSD-S) which are inputted through the microcomputer 40 and the video signals input to the LCD processor 70 to output a character on the screen / W) are synthesized and finally output as an Algibi signal, the screen is output to the LCD panel 80 that the user can see.

When the position of the main screen and the sub-screen are to be changed in the above operation, when the user operates the selection switch unit 50 to output the position conversion signal to the microcomputer 40, the microcomputer 40 may switch to the first video switching unit 30. ) And the output of the second video switching unit 35 may change the positions of the main screen and the sub-screen.

Therefore, the effect of the present invention, which operates as described above, can watch TV broadcasting in the absence of external input, can additionally display a sub-screen on the screen of the liquid crystal projector, and can change the main screen and sub-screen positions. Due to the features that can be used to increase the convenience and user convenience of the device.

Claims (3)

Video input means for receiving a TV signal and outputting a AV signal, and outputting a video signal which is a plurality of external input signals and a Y / C signal which is a luminance / color signal; A comb filter for converting the AV signal output from the video input means into a Y / C signal; First video switching means for receiving a Y / C signal output from the comb filter and selecting and outputting one of a plurality of signals; Second video switching means for selecting and outputting one of a plurality of CVS signals output from the video input means; Select the signals output from the first and second video switching means to output through the main and sub screens, and display the images of the main and sub screens output by an external command signal. A microcomputer to convert each other; A PIP means controlled by the microcomputer and receiving a PI signal to perform a PIP function; And a selection switch means for selecting a video signal to be output on the sub-screen and outputting a command signal corresponding to the microcomputer so that the main screen and the sub-screen can be mutually converted. The method according to claim 1, wherein the video switching means, First video switching means for receiving a signal from a video input means and a comb filter, and outputting a Y / C signal corresponding to a main screen to an LCD processor; And a second video switching means for receiving a signal from a video input means and a Y / C mix, which corresponds to a sub-screen, and outputs a CV signal to the PIP means. The method according to claim 1, wherein the microcomputer, Inputs and outputs of the clock signal SL and the data signal SD are input and output with the video switching means and the LCD processor, and are controlled by the position switching signals of the main screen and the sub-screen of the selection switch means. A video segmentation apparatus converts an output of a video switching means and outputs a screen control signal to an LCD processor.