KR20080000062A - Apparatus for setting up capture area by wide screen signal - Google Patents

Abstract

An apparatus for establishing a capture region according to a WSS(wide screen signal) is provided to set the capture region according to aspect ratio data and store the aspect ratio data so that motion data of each frame is determined in a motion process. An apparatus for establishing a capture region according to a WSS includes a micro-computer(30), a video processing module(40), a signal detecting module(50), and a frame memory(60). The signal detecting module(50) extracts a WSS signal from an input video signal and outputs aspect ratio data for the WSS signal. The video processing module(40) extracts video data corresponding to the aspect ratio data from the input video signal. The micro-computer(30) controls the video processing module(40) according to the aspect ratio data if the aspect ratio data are input from the signal detecting module(50) to output video data corresponding to the aspect ratio data. The micro-computer(30) establishes a capture region for each frame of the video signal output from the video processing module(40) and stores the capture region in a frame memory(60).

Description

Apparatus for setting up capture area by wide screen signal}

1 is a block diagram of a capture area setting apparatus according to WSS according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: Tuner part

20: switching unit

30: Micom

40: video processing unit

50: signal detector

60: frame memory

70: display driver

The present invention relates to a television, and more particularly, to a capture area setting apparatus according to a WSS signal for automatically setting a capture area of a screen according to a WSS signal.

A typical television receives and demodulates a broadcast signal transmitted from a broadcasting station, and outputs it as a video signal and an audio signal through a CRT and a speaker.

The general configuration of a typical television that performs this function includes a microcomputer that controls the overall operation of the system, an intermediate frequency processing module for processing video and audio intermediate frequencies, and a video demodulation for restoring the received video signal to the original video signal. Module and a deflection module for deflection, which are designed with respective ICs to receive and process broadcast signals.

Such televisions generally display a general television video screen having a 4: 3 aspect ratio, but recently, a wider TV with a 16: 9 aspect ratio is disclosed, which is much wider than a general television video screen. have.

To this end, the television must be signal processed to meet the respective aspect ratios, so that accurate images can be realized.

Therefore, the television has a circuit for automatically detecting the aspect ratio.

As described above, a general television automatically detects an aspect ratio of an image signal and displays an image at a corresponding aspect ratio. When a television having a 16: 9 wide screen is input, an image signal having a 4: 3 aspect ratio is input. In the case of a television having a 4: 3 screen, when a video signal having a 16: 9 aspect ratio is input, the left and right images are not displayed.

As such, when images having different aspect ratios are displayed according to the aspect ratio of the input image signal, by storing each frame and comparing the stored frames, the dynamic movement of the previous frame and the current frame is judged according to motion processing, and accordingly, When performing a function to improve the response speed by outputting a voltage, there was a problem that the correct motion processing is not performed.

That is, conventionally, each frame of the image displayed on the entire screen during motion processing is stored and compared with each other. At this time, a blanking period is generated according to an image signal having a 4: 3 or 16: 9 aspect ratio. When comparing every frame for motion processing, there is a problem in that the accurate frame-by-frame comparison is not performed by comparing the blanking period.

Therefore, even if the aspect ratio changes, there is a need to accurately set the capture area in which the actual image is displayed and store it in the frame memory.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a method for setting a capture area according to a WSS signal to detect aspect ratio data through a WSS signal and to accurately set a capture area according to a corresponding aspect ratio. have.

The present invention devised to achieve the above object is as follows. The capture area setting apparatus according to the WSS of the present invention detects the WSS signal from the input image signal and outputs the aspect ratio data for the WSS signal, and detects the image data corresponding to the aspect ratio data from the input image signal. When the aspect ratio data is input from the video processor for outputting to the display unit and the signal detection unit, the video processor controls the video processor according to the aspect ratio data to output image data corresponding to the aspect ratio data, and the image output from the video processor. And a microcomputer configured to set a capture area in every frame of the signal and to store it in a frame memory that stores the image signal of the capture area.

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

1 is a block diagram of an apparatus for setting a capture area according to a WSS signal according to an embodiment of the present invention.

According to an embodiment of the present invention, a capture area setting apparatus according to a wide screen signal (WSS) signal includes a tuner unit 10, a switching unit 20, a microcomputer 30, a video processing unit 40, a signal detection unit 50, And frame memory 60.

First, the tuner 10 selects a channel from a broadcast signal received through an antenna, detects a video signal and an audio signal of an intermediate frequency from the broadcast signal, and outputs the signal to the switching unit 20.

The switching unit 20 outputs a video signal and an audio signal of an external signal such as a video recorder or a laser disc player input from an external device, and a video signal and an audio signal of a broadcast signal input from the tuner unit 10 from the microcomputer 30. Output selectively according to the switching control signal output.

The video processor 40 detects image data corresponding to the aspect ratio data output from the microcomputer 30 from the image signal output from the switching unit 20 and outputs the image data to the display unit 70 at the corresponding aspect ratio.

The signal detector 50 detects the WSS signal from the image signal output from the switching unit 20 and outputs aspect ratio data corresponding to the WSS signal to the microcomputer 30.

The frame memory 30 stores the capture signal for each frame of the image signal output by the display driver 70 for each frame.

Lastly, the microcomputer 30 generally controls the capture area setting apparatus according to the WSS signal according to the embodiment of the present invention. First, the microcomputer 30 controls the operation of the tuner unit 10 and is output from a remote controller (not shown). The switching control signal is output to the switching unit 20 according to a user's control command to selectively switch the video signal, the audio signal or the external signal input from the tuner unit 10.

In addition, the WSS signal detected in the image signal output from the switching unit 20 is received from the signal detection unit 50 to control the deflection through the aspect ratio data for the WSS signal and the processing in the video processing unit 40 described above. Image signals are stored every frame.

At this time, the microcomputer 30 stores the capture area according to the aspect ratio data described above. It measures the width of the video signal included in the vertical synchronization signal, where the width of the video signal is the number of horizontal synchronization signals, and the aspect ratio is determined according to the number of the horizontal synchronization signals, and the aspect ratio is excluded. After setting the capture area, the captured capture area is stored in the frame memory 30.

Accordingly, the frame memory 30 stores the capture area according to the corresponding aspect ratio, thereby performing various functions such as motion processing.

This process is repeated every frame in which the aspect ratio data is input from the signal detector 50.

The present invention is not limited to the above-described embodiments and can be carried out in various modifications within the scope of the technical idea of the present invention.

According to the present invention configured as described above, the aspect ratio data can be detected through the WSS signal to accurately set the capture area according to the aspect ratio.

In addition, by setting the capture area according to the aspect ratio data and storing the capture area, it is possible to more accurately determine the movement for every frame during the motion processing.

Claims (1)

A signal detector which detects a WSS signal from an input video signal and outputs aspect ratio data of the WSS signal; A video processor for detecting image data corresponding to the aspect ratio data from an input image signal and outputting the detected image data to a display unit; And When the aspect ratio data is input from the signal detector, the video processor controls the video processor according to the aspect ratio data to output image data corresponding to the aspect ratio data, and captures a capture area every frame in the image signal output from the video processor. And a micom configured to store the image signal of the capture area in a frame memory.

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