KR20060071188A - Convergence correction method using osd in a projection tv - Google Patents

Abstract

The present invention compares the adjusted data to each system that automatically matches the wrong coordinates for each position in the projection TV, and compares the position data input by the sensor to set the convergence data automatically. The present invention relates to a convergence correction method using an OSD.

Such a method of the present invention comprises the steps of: detecting a convergence automatic adjustment key input from a remote controller; Outputting an OSD screen of a reference value to a screen when the automatic adjustment key is input; Detecting a convergence detect signal with an optical sensor; Comparing the value detected by the optical sensor with an OSD reference value and calculating a correction value by the difference; And automatically correcting the convergence according to the calculated correction value.

Therefore, according to the present invention, the correction value can be calculated very quickly by using the OSD output for the convergence adjustment, and thus the image quality can be improved by the rapid processing of the convergence correction.

Convergence, Projection TV, CRT, OSD, User Adjustment, Calibration, Position Detection

Description

CONVERGENCE CORRECTION METHOD USING OSD IN A PROJECTION TV}             

1 is a schematic diagram showing the configuration of a typical projection TV,

2 is a block diagram showing a conventional convergence adjustment circuit in the projection TV;

3 is an installation example of an optical sensor applied to the present invention,

4 is an example of an OSD position reference point applied to the present invention,

5 is a flowchart illustrating a convergence correction method using an OSD according to the present invention.

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

116: switching / amplifier 122, 124, 126: CRT

134: screen 202, 204: position detection unit

210: convergence correction unit 220: pattern generator

302 ~ 308: Optical sensor 402: OSD reference point

The present invention relates to a convergence adjustment circuit of a projection TV, and more particularly, the convergence data by comparing the position data input by the sensor and the data adjusted in each system that automatically matches the wrong coordinates for each position. It relates to a convergence correction method using the OS of the projection TV to automatically set.

In general, a projection TV is a device in which the colors of R, G, and B are projected onto a screen by using a CRT, so that an image is displayed on the screen. About 7 inches of red (R), green (G), and blue (B) The CRTs are enlarged to a large screen (approximately 30 "to 65") with spaces of 15 cm each to provide a large screen. The emotional quality of the projection TV is determined by various items such as white uniformity (W / U), luminance uniformity (B / U), convergence, focus, and distortion.

Here, convergence means that the R, G, and B beams emitted by the electron gun are collected at a point on the screen by the magnetic field of the deflection yoke, but the beam is not deflected as desired due to the abnormality of the yoke or the influence of the geomagnetic field. Occurs, color blurring occurs on the screen.

1 is a schematic diagram showing the overall configuration of a typical projection TV.

In general, the projection TV includes a circuit unit 110 for receiving and processing an image signal, an R / G / B CRT 122, 124, 126 for projecting a production signal of the circuit unit, and light of a projection object. It consists of an optical unit 130 projecting on the screen.

The circuit unit 110 includes an RF tuner 111 for receiving a radio (RF) television broadcast signal, an IF 112, a deflection unit 113, an image processor 114, an audio processor 115, and a remote controller receiver ( 116, the microcomputer 117, the OSD 118, the switching / amplifier 119, and the like, and supply an image signal and a deflection signal to the R / G / B CRTs 122, 124, and 126, respectively.

The projection images of the R / G / B CRTs 122, 124, and 126 are reflected by the reflection mirror 132 and then enlarged by the rear projection screen 134.

2 is a block diagram showing a conventional convergence adjustment circuit in the projection TV, the conventional automatic convergence adjustment circuit inputs a pattern generating unit 220, a video signal or a signal generating unit signal for generating a test pattern for convergence After receiving and amplifying, the switching / amplifier 116 provided to the CRT and the R, G, and B CRTs 122, 124, 126, the screen 134, and the screen 134, which receive and display the RGB signals, are respectively installed and aligned. A position detection unit 202, 204 for detecting the position of the pattern, and a convergence correction unit 210 for controlling the convergence yoke according to the output of the position detection unit 202, 204.

Referring to FIG. 2, the position value is obtained by the output signals of the position detection units 202 and 204 provided at the periphery of the screen 134, the convergence error value is obtained using the position value, and then the convergence is corrected according to the calculated convergence error value. do.

On the other hand, when using custom convergence on the projection TV's menu control, it moves to the wrong position on the screen using the indicator bar supported by the convergence module. In this case, since the communication between the convergence module and the processor must be performed on the position data, it takes a considerable time to move the position.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems, and the convergence correction method using the OSD of the projection TV that can quickly adjust the convergence by calculating the correction value using the OSD data with the convergence module The purpose is to provide.

In order to achieve the above object, the present invention provides a method for correcting the convergence of the projection TV, the position of displaying the data of the wrong convergence of the projection TV and coordinates adjusted by the optical sensor with an OSD. The convergence adjustment is performed using the difference between and.

In the present invention, the convergence adjustment may include detecting a convergence automatic adjustment key input from a remote controller; Outputting an OSD screen of a reference value to a screen when the automatic adjustment key is input; Detecting a convergence detection signal with an optical sensor; Comparing the value detected by the optical sensor with an OSD reference value and calculating a correction value by the difference; And automatically correcting the convergence according to the calculated correction value.

As described above, the present invention improves the image quality of the projection TV by enabling the adjustment of convergence by quickly calculating a correction value using OSD data with the convergence module.

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

3 is an installation example of an optical sensor applied to the present invention, FIG. 4 is an example of an OSD position reference point applied to the present invention, and FIG. 5 is a flowchart illustrating a convergence correction method using the OSD according to the present invention.

As shown in FIG. 3 for the convergence correction according to the present invention, the photosensors 302, 304, 306 and 308 are positioned on four sides of the screen to detect the convergence signal. An OSD reference signal 402 according to the present invention is provided as shown in FIG.

In the convergence correction method according to the present invention, as shown in FIG. 5, the difference between the data inputted by the optical sensor for the wrong convergence of the projection TV and the position at which the coordinate value coordinated with the OSD is indicated by the OSD is used. This is done by performing a convergence adjustment.

First, the present invention is a step (501 ~ 503) of detecting the convergence automatic adjustment key input from the remote control, and if the convergence automatic adjustment key is input, the step (504) of outputting an OSD screen of the reference value to the screen, optical Detecting the convergent detection signal by the sensors 302 to 308, comparing the detected value with an OSD reference value and calculating a correction value by the difference (506), the calculated correction Automatically correcting the convergence according to the value (step 507).

Referring to FIG. 5, after the power is turned on, the remote controller receives a remote controller signal and decodes the remote controller signals (501 and 502).

If the remote control key input is automatic adjustment of convergence, OSD is displayed (503, 504), and the convergence detection signal is detected by the optical sensors 302 to 308 (505).

Subsequently, the value detected by the photosensor and the OSD data reference value are compared to calculate a correction value by the difference (506). Then, the convergence is corrected according to the calculated correction value (507).

In this case, the remote control may include a remote control key having a diagonal movement key for moving the direction or a mouse function.

As described above, the present invention can improve the image quality of the projection TV by quickly calculating the correction value using the convergence module and the OSD data and adjusting the convergence.

As described above, the present invention can calculate the correction value very quickly by using the OSD output for the convergence adjustment, and thus the image quality can be improved by the rapid processing of the convergence correction.

Claims (2)

In the convergence correction method of the projection TV, The convergence adjustment of the projection TV is performed by using the difference between the data inputted by the optical sensor and the position where the coordinate value coordinated by the OSD is displayed. Convergence correction method using OSD. The method of claim 1, wherein the convergence adjustment, Detecting a convergence automatic adjustment key input from a remote controller; Outputting an OSD screen of a reference value to a screen when the automatic adjustment key is input; Detecting a convergence detection signal with an optical sensor; Comparing the value detected by the optical sensor with an OSD reference value and calculating a correction value by the difference; And Automatically correcting convergence according to the calculated correction value; Convergence correction method using the OS of the projection TV, characterized in that made, including.

Images