KR100552243B1 - Device and method for controlling auto convergence - Google Patents

Abstract

The present invention relates to a method and apparatus for auto-convergence control, and more particularly, when RGB of the geomagnetic field CRT is distorted due to factory final adjustment and consumer adjustment, or when auto search is performed in the first home. A method and apparatus for controlling adjustment of auto convergence to perform auto convergence. According to a preferred embodiment, the present invention provides an apparatus comprising: a first memory for storing preset T4 data; A microcomputer connected to the first memory and configured to manage the first memory; Connected to the microcomputer, and generates and displays a pattern for convergence adjustment under the control of microcomputer, moving the pattern for each of the R, G, and B signals, detecting the pattern and outputting sensing data, and then detecting data and reference data. A convergence IC chip for generating a reference difference value corresponding to a difference with a reference for each of the R, G, and B signals, writing the reference difference value to the convergence IC chip, and adjusting the convergence; And a second memory connected to the convergence IC chip and configured to store the reference difference value in the memory as T3 data and T4 data related to recovery of preset T1 data and T1 data.

Sensor, Convergence, Auto Search, Convergence

Description

Device and method for controlling auto convergence             

1 is a view for explaining a method of adjusting the convergence of a projection television according to the present invention.

2 is a diagram showing the configuration of a convergence adjustment apparatus in a projection television according to a preferred embodiment of the present invention.

3A and 3B compare the convergence adjustment data of the prior art and the present invention.

4 is a diagram illustrating an operating procedure of auto convergence according to a preferred embodiment of the present invention.

5A and 5B are exemplary views displaying the process of FIG. 4 on a screen.

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

110: micom

120: first memory

130: convergence chip

140: second memory

The present invention relates to a method and apparatus for auto-convergence control, and more particularly, when RGB of the geomagnetic field CRT is distorted due to factory final adjustment and consumer adjustment, or when auto search is performed in the first home. A method and apparatus for controlling adjustment of auto convergence to perform auto convergence.

In general, a projection television refers to a television system that emits three special cathode ray tubes having three primary colors of light of R, G, and B to project and enlarge an image using an enlarged lens and a reflector to obtain a final screen. The cathode ray tube is used similarly to a conventional television receiver, but it is a system different from the conventional television in that it forms an image and displays it on a separate image screen. Here, there is a case where the color of the edge of the primary color picture is inconsistent, and in particular, the mismatch of the primary color generated in the color display device causes a problem of deterioration of image quality. This is a phenomenon caused by the inaccurate matching of the three colors of R, G, and B colors, and the function of correcting the matching on the screen even when it is deflected to a specific position on the screen is called convergence. For example, if you want to output a white line on the screen, red, green, and blue are output at the same time, but the three beams do not coincide on the screen and fall slightly. This phenomenon is called mis-convergence. Correcting such miss convergence is called convergence adjustment.

In the projection television as described above, the convergence is adjusted by using a convergence adjustment chip on each of three RGB CRTs in order to adjust the convergence unlike general television.

However, when the convergence adjustment is performed using the existing convergence adjustment chip used in the projection television, there is a problem that it is difficult to perform the optimal convergence adjustment according to the convergence adjustment in the factory and the change of the convergence adjustment by the viewer. In addition, according to the related art, by performing auto search and convergence respectively, there is a problem of causing trouble at the time of first viewing.

The present invention has been made to solve all the problems of the prior art, and when the RGB of the geomagnetic field CRT is distorted due to the factory final adjustment and consumer adjustment, or when performing an auto search in the first home, the auto corresponding to the geomagnetic field It is an object of the present invention to provide a method and apparatus for controlling the adjustment of auto convergence for performing convergence.

In addition, another object of the present invention is to increase the display satisfaction of the first screen to the viewer by performing the auto-convergence at the same time, when performing the auto search, other objects of the present invention are described in the preferred embodiment Will be clearer.

According to an aspect of the present invention for achieving the above object, when the RGB of the geomagnetic field CRT is distorted due to factory final adjustment and consumer adjustment, or when performing an auto search in the first home, auto-convergence corresponding to the geomagnetic field It is possible to provide an apparatus for controlling the adjustment of the auto convergence to perform.

According to a preferred embodiment, the apparatus comprises: a first memory for storing preset T4 data; A microcomputer connected to the first memory and configured to manage the first memory; Connected to the microcomputer, and generating and displaying a pattern for convergence adjustment under the control of the microcomputer, while moving the pattern with respect to each of the R, G, and B signals, detecting the pattern and outputting sensing data; Comparing the sensed data with the reference data, a reference difference value corresponding to the difference with the reference for each of the R, G, and B signals is generated, the reference difference value is written to the convergence IC chip, and convergence is obtained. A convergence IC chip for adjusting; And a second memory connected to the convergence IC chip, and configured to store the reference difference value in a memory as preset T1 data and T3 data and T4 data related to recovery of the T1 data.

Here, the T1 data is primarily stored after the initial adjustment of the factory, the data after the auto-convergence or user convergence adjustment is secondarily stored, the T2 data stores the initial adjustment data of the factory, when the reset key is input The data is written to the convergence IC chip and stored as the T1 data when a confirmation key is input. The T3 data is data stored for backup, and is used to recover the data when the T1 data is damaged. The T4 data performs a function of storing data for an observer and restores the T1 data. The reference data for making it. Here, the first memory and the second memory may be configured as EEPROM.

According to an aspect of the present invention for achieving the above object, when the RGB of the geomagnetic field CRT is distorted due to factory final adjustment and consumer adjustment, or when performing an auto search in the first home, auto-convergence corresponding to the geomagnetic field It can provide a method of controlling the adjustment of the auto convergence to perform.

According to a preferred embodiment, the method comprises (a) reading the horizontal and vertical reference data for each of the R, G, and B signals, and then generating and displaying a pattern for convergence adjustment according to the horizontal and vertical reference data. Detecting the pattern and outputting sensing data while moving the pattern with respect to each of the R, G, and B signals; (b) generating a reference difference value corresponding to a difference between a reference for each of the R, G, and B signals while comparing the sensed data with the reference data; (c) writing a reference difference value to the converged IC chip; And (d) storing the reference difference value in memory as T1 data and T3 data and T4 data related to the recovery of the T1 data. In this case, the auto convergence control method may be performed simultaneously with a process of performing an auto search. In addition, the T1 data is primarily stored after the initial adjustment of the factory, the data after the auto convergence or user convergence adjustment is secondarily stored, the T3 data is the data that is stored for backup, and when the T1 data is damaged The data is for recovery, and the T4 data is a reference data for restoring the data for the observer (Observer) and restoring the T1 data.

Hereinafter, preferred embodiments of the auto-convergence adjustment method and apparatus according to the present invention will be described in more detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components regardless of reference numerals The same reference numerals will be given, and redundant description thereof will be omitted.

1 is a view for explaining a method of adjusting the convergence of a projection television according to the present invention.

In projection television, the light (scanning beam) generated by the special cathode ray tubes of R, G, and B passes through the projection lens and passes through the projection lens, and then the light reflected by the reflector is R, G, B. The image is formed on a large screen separately installed from the cathode ray tube of, wherein a clear and clear screen is reproduced when the scanning beams of R, G, and B are exactly matched on the large screen. , When the scanning beams of B do not coincide, it is called convergence adjustment.

As shown in Fig. 1, the plurality of S1, S2, S3, S4 light sensors 10 are located between the display area and the overscan area of the projection television. Here, the number of the optical sensor 10 is flexible, it is assumed in the present invention to be four, the position will be described on the basis of the case where each is mounted at the center of the corner. The optical sensor 10 may detect light amounts of R, G, and B at predetermined positions on the screen.

2 is a diagram showing the configuration of a convergence adjustment apparatus in a projection television according to a preferred embodiment of the present invention.

Referring to FIG. 2, the present invention provides a first memory 120 for storing T4 data, a micom 110 for managing the first memory, and a convergence for adjusting convergence according to the control of the micom 110. According to the IC chip 130 and the converged IC chip 130, a second memory 140 for storing T1, T2, and T3 data may be included. Here, the first memory 120 and the second memory 140 may be implemented as EEPROM.

Referring to Table 1 below, T1, T2, T3, and T4 data according to a preferred embodiment of the present invention are briefly summarized.

Kinds Contents Remarks T1 Convergence 1 Stored Data main T2 Convergence 2 Stored Data reset T3 Convergence 3 Stored Data recovery T4 Convergence 4 Stored Data observer

The T1 data is data to be used when the power is applied and the power is turned on or when timing is switched. The data after the initial adjustment of the factory is stored primarily, and the data after the auto convergence or user convergence adjustment can also be stored. A method of storing T1 data according to the present invention will be described with reference to FIGS. 3A and 3B.

Referring to FIG. 3A, data according to the conventional scheme includes data 310 related to RAM clear, factory adjustment data 320, and user convergence adjustment data 330, while data according to the present invention relates to RAM clear. It may include data 350 and T1 data 360, and does not include an area for separate user convergence adjustment data 330.

The T2 data stores adjustment initial data of the factory, and is configured to be written to the convergence IC chip 130 when a reset key is input, and stored as T1 data when a confirmation key is input.

T3 data is data that is kept for backup, and it can perform a function of recovering when T1 data is damaged by various causes such as an error and an error. Therefore, the data after the initial adjustment of the factory is stored first, and the data after the auto convergence or the user convergence adjustment is also stored, but when T2 data is stored in the T1 data, it is configured not to be backed up to the T3 data.

T4 data stores the data for the observer (Observer), and can be used as the reference data for converging storage and restoring the abnormality of the T1 data. The T4 data according to the present invention is configured to hold the same data as the T3 data, and according to the model of the projection television, the T4 data is selectively applicable.

4 is a diagram illustrating an operation procedure of auto convergence according to a preferred embodiment of the present invention, and FIGS. 5A and 5B are exemplary views displaying the process of FIG. 4 on a screen.

Hereinafter, referring to FIG. 4, horizontal and vertical reference data for each of the R, G, and B signals are read in step S410. In operation S420, the pattern generation unit (not shown) generates and displays a pattern for convergence adjustment. In operation S430, the pattern is sensed while the pattern is moved with respect to each of the R, G, and B signals, and the sensing data is output.

In operation S440, a reference difference value corresponding to a difference between a reference for each of the R, G, and B signals is generated while comparing the sensed data with the reference data. At this time, the process of generating the reference difference value may proceed simultaneously with the process of performing an auto search in the microcomputer of step S450.

In step S460, the reference difference value is written to the convergence IC chip 130. In step S470, not only the T1 data corresponding to the reference difference value according to the convergence adjustment, but also the T2 and T3 data related to the recovery of the T1 data. It is configured to store.

Through such a process, while the convergence according to the present invention is performed simultaneously with the auto search, the viewer can increase the display satisfaction of the first screen. Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

As described above, according to the present invention, when the RGB of the geomagnetic field CRT is distorted due to the factory final adjustment and consumer adjustment, or when the auto search is performed in the first home, an auto convergence for performing auto convergence corresponding to the geomagnetic field is performed. There is an effect to control the adjustment. In addition, the present invention has the effect of increasing the display satisfaction of the first screen to the viewer by performing the auto convergence at the same time, when performing the auto search.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (9)

In the auto convergence control device, A first memory for storing preset T4 data; A microcomputer connected to the first memory and configured to manage the first memory; Connected to the microcomputer, and generating and displaying a pattern for convergence adjustment under the control of the microcomputer, while moving the pattern with respect to each of the R, G, and B signals, detecting the pattern and outputting sensing data; Comparing the sensed data with the reference data, a reference difference value corresponding to the difference with the reference for each of the R, G, and B signals is generated, the reference difference value is written to the convergence IC chip, and convergence is obtained. A convergence IC chip for adjusting; And A second memory coupled to the convergence IC chip for storing the reference difference value in a memory as preset T1 data and T3 data and T4 data related to recovery of the T1 data; Auto-convergence control device comprising a. The method of claim 1, The T1 data is an auto-convergence control device, characterized in that the data after the initial adjustment of the factory is primarily stored, the data after the auto convergence or user convergence adjustment is stored second. The method of claim 1, The T2 data stores initial adjustment data of a factory, and when a reset key is input, is written to the convergence IC chip, and when the confirmation key is input, the T2 data is stored as the T1 data. The method of claim 1, The T3 data is data stored for backup, and the auto-convergence control device, characterized in that for recovering when the T1 data is damaged. The method of claim 1, And the T4 data is a reference data for restoring data for an observer and restores the T1 data. The method of claim 1, And the first memory and the second memory are EEPROMs. In the auto convergence control method, (a) After reading the horizontal and vertical reference data for each of the R, G, and B signals, and generating and displaying a pattern for convergence adjustment according to the horizontal and vertical reference data, Sensing the pattern and outputting sensing data while moving the pattern; (b) generating a reference difference value corresponding to a difference between a reference for each of the R, G, and B signals while comparing the sensed data with the reference data; (c) writing a reference difference value to the converged IC chip; And (d) storing the reference difference value in memory as T1 data and T3 data and T4 data related to the recovery of the T1 data; Auto-convergence control method comprising a. The method of claim 7, wherein The auto convergence control method is performed at the same time as the process of performing an auto search (Auto Search). The method of claim 7, wherein The T1 data is primarily stored after the initial adjustment of the factory, the data after the auto-convergence or user convergence adjustment is stored secondly, the T3 data is the data that is stored for backup, and recovers when the T1 data is damaged And the T4 data is a reference data for restoring the T1 data, and performs the function of storing data for an observer.

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