KR100269256B1 - Automatic amendment method of monitor - Google Patents

Abstract

PURPOSE: An automatic monitor correction method is provided to be capable of always keeping a monitor to a fixed standard state by comparing/ analyzing the voltage data measured with a sensor with the standard data and adjusting voltages of voltage supply devices of red, green, blue supplying the voltages to the electron guns of the monitor. CONSTITUTION: The sensor(50) measures voltages for three beams by the command of a processor(20) to send the measured voltages to the processor(20) together with the data of the color temp. state of the present monitor. The processor(20) compares the beforehand inputted data for the voltages of three beams in a standard white luminance state for the color temp. of the relevant monitor with the collected data, and judges whether or not the collected data exist within the range of the error of the standard data, and when out or the range, judges whether or not the voltage of the sensor data is lower than the voltage of the standard data, and when lower, instructs a controller to increase the voltages of the electron guns, and when higher, instructs to lower the voltages.

Description

Monitor autotomatic correction method

The present invention relates to a method for automatically correcting a monitor to improve the performance of a product manufactured by a manufacturer as an application technology for controlling an electron gun in manufacturing a monitor, and to reduce a change in performance with time when using each monitor. will be.

In recent years, as the use of color monitors is increasing and the operation of the high-speed information communication network is approaching, demands for accurate colors of users are increasing. Accordingly, the necessity for accurate reproduction of color information in the monitors is highlighted.

To this end, one of the biggest problems of color operation systems that are being researched and developed in developed countries is the precise white brightness adjustment and stability of the monitor.

Conventionally, while measuring the standard color displayed on the monitor using an external measuring device, the color, brightness, brightness, etc. of the monitor are manually adjusted so that the desired standard state, for example, red, green, blue ( A method of making a luminance value of 60 cd / m 2 when the value of Blue) is 255, 255, and 255, respectively, was used.

Therefore, it is impossible to control the voltage of the monitor electron gun that changes with time, and there is a problem in that the monitor is set to a standard state by using a measuring device every time the monitor is turned on.

In addition, the focusing device of the CRT is to compensate for the blur due to the mechanical characteristics of the CRT and the interference of the external electromagnetic field, and it is a technology that can be applied and understood to both CRT and CRT. In order to fit them all into a standard characteristic curve defined as a world standard, a problem arises without knowledge of color characteristics.

In the related art, a target for calibrating a monitor generates an opposite electromagnetic field capable of detecting and canceling a change in an external electromagnetic field. The main cause of the change is not the CRT but an external factor.

1 is a configuration diagram of a conventional monitor display device, which includes an electron gun 11 for emitting electrons when a voltage of red (R), green (G), and blue (B) is applied, and an electron beam suitable for the characteristics of the CRT. Control grid 12 to adjust the control, a focus control unit 13 for adjusting the exact focus of each electron beam, a deflection coil 14 for adjusting the direction of the electron beam to reach a specific position of the screen, the light emitting material coating And a shadow mask 16 for displaying the electron beam that has reached (15) in red, green and blue colors, and a screen 17 for displaying the electron beams of red, green and blue on the screen.

According to the above configuration, the screen is displayed on the screen 17 of the CRT. First, when a voltage is applied to the red, green, and blue electron guns 11, the heater in the electron gun is heated to generate electrons. In this case, the emitted electrons are adjusted to the electron beams suitable for the CRT characteristics while passing through the control grid 12. In the focusing unit 13, precise focusing of each electron beam is made, and in the deflection coil 14, the electron beams. The direction is adjusted to reach a specific position of the screen 17 accurately, and the electron beam that passes through the shadow mask 16 and reaches the light emitting material coating 15 of the screen 17 is red according to the light emitting material. (R), green (G), and blue (B) colors are displayed, and the screen is displayed on the screen 17 through this series of processes.

In order to solve the above problems, the present invention selects a monitor correction function by a correction selection button attached to a voltage measuring sensor and added to the monitor or a monitor correction command on a computer program, and the monitor is previously input red. Green and Blue electron guns emit electrons at maximum, that is, 255, 255, and 255 screen states are created, and the voltage of the electron gun is measured to adjust the voltage to a pre-input standard state. In addition, it reduces time waste and measurement error caused by the method of making the monitor to the standard state by using the external measuring equipment, and automatically adjusts the upper monitor automatically at regular time while the user is using the monitor. It aims to keep the state of the monitor at a constant standard state at all times.

In order to achieve the object of the present invention, a step of selecting a color temperature and luminance that can be expressed by the monitor after turning on the monitor for auto-calibration of the monitor, and a correction selection button added to the monitor after temperature and luminance selection and a monitor on a computer program If the monitor calibration function is not selected by the calibration command and the calibration function is not selected, exit the calibration function and perform the normal monitor function.When the monitor calibration function is selected, the processor stops the signal coming into the current monitor. Transmitting a signal for a screen state in which three electron guns of green and blue emit electrons to the maximum; and after receiving a signal for the screen state, a sensor unit receives a command for voltage measurement of three beams from the processor unit. Measure the voltage for each of the Passing to the processor unit, the processor unit receives the color temperature comparison data and compares the data of the three beam voltages in the standard white luminance state with respect to the corresponding monitor color temperature input and the collected data.

And determining whether the collected data is within the error range of the standard data after the comparison, and determining whether the collected sensor data voltage is lower than the voltage of the standard data, if it is outside the predetermined error range. Increasing the voltage by instructing the voltage to be lowered, and intensifying the voltage by instructing the voltage to be lowered if it is higher than the standard data after the determination, and when the difference between the collected data and the standard data is within a certain range, the processor Stopping the signal sent to the monitor and returning to the signal sent from the computer to the monitor; operating the mounted timer after the signal returns and waiting for the next monitor auto correction function; elapse of the next timer in the standby state Determine if time is fixed If the elapsed time does not reach a certain time, return to the timer initialization and wait until a certain time, and after a predetermined time, the input red, green, and blue electron guns of the three electron guns emit the maximum electrons. And returning to perform the monitor automatic correction function again.

1 is a configuration diagram of a conventional monitor display device;

2 is a block diagram of the automatic monitor correction apparatus to which the present invention is applied,

3 is a block diagram of an automatic monitor correction apparatus processor according to the present invention;

4 is a monitor automatic calibration flow chart in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

10: monitor display device 11: electron gun

12: control grid 13: focus control unit

14: deflection coil 15: light emitting material coating

16: shadow mask 17: screen

20 processor 21 memory

22: timer 23: controller

24: arithmetic unit 30: automatic calibration function selection button

40: luminance selection button 50: red, green, blue voltage sensor

60: red, green, blue voltage supply device

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

2 is a configuration diagram of the automatic monitor correction apparatus to which the present invention is applied. As shown in the drawing, a sensor 50 for measuring a voltage of a beam emitted from an electron gun and a state of a monitor are determined to supply necessary data to a power supply of the electron gun. It is composed of a processor unit 20 to be passed to the device (60).

The color temperature and luminance button 40 of FIG. 2 is a button added to a button for selection of color, temperature, density, brightness, etc. included in a conventional monitor, and the R, G, and B voltage sensors 50 are CRT tubes. Is a voltage sensor for measuring the voltage applied to each of the electron guns of R, G, and B, and the processor unit 20 uses the data measured by the voltage sensor and the data selected by the selection button 30 to R, G, and B. It is used to determine the data needed to adjust the voltage applied to each electron gun.

The automatic monitor correction device as described above can produce a product that only a person who has knowledge of CRT color expression characteristics understands and applies.

3 is a block diagram of an automatic display calibration device processor unit according to the present invention, the processor unit 20 is implemented in the form of a one-chip microprocessor such as a custom-made semiconductor, and stores the standard data as shown in FIG. Difference from standard data by using voltage data applied to heaters of red, green, and blue electron guns obtained from memory 21, monitor color temperature, monitor luminance value, and voltage sensor as input data A controller for adjusting the voltage supply device of the red, green, and auditory electron guns of the monitor by using the calculation result of the red, green, and blue electron guns obtained from the output of the operation unit. 23, and a timer 22 for periodic execution every predetermined time.

The monitor automatic compensation device processor unit configured as described above, when the voltage generation characteristic of the electron gun that changes as time passes or the voltage applied to the CRT varies, is detected by a voltage sensor added therein and automatically released from the factory. As the optimal condition is maintained, the change factor is not outside the CRT, but only the change factor of the CRT itself.

The processor 20 of FIG. 3 includes external input data, that is, automatic correction function selection, monitor color temperature selection, monitor luminance value selection, voltage data measured from R, G, and B tank guns, and standard data stored in a memory. Using the monitor selection button such as the output voltage required for the monitor calibration output to the controller 23, 60, 70, 80 cd / ㎡ and voltage measured at 5000, 6500, 9300。K The memory 21 stores the data as standard data, the controller 23 which instructs the voltage rise and fall of the voltage supply device of the R, G, and B electron guns, and the time for performing the automatic correction function at a predetermined time. It consists of a timer 22 for measuring.

The method for determining the standard data includes a monitor color temperature of 5000 ° K for each monitor, and a voltage of red, green, and blue electron guns with a luminance value of 60 cd / m2, and a monitor color temperature of 5000 ° K. The red, green, and blue electron guns with a luminance value of 70 cd / m² and the monitor color temperature of 5000 ° K and the red, green and blue electron guns with a luminance value of 80 cd / m² and a monitor color temperature of 6500。K. The values of the red, green and blue electron guns in the 60cd / ㎡ state and the color temperature of the monitor are 6500。K and the luminance of the red, green and blue electron guns in the 70cd / ㎡ state and the monitor color temperature are 6500。K. Voltage of red, green and blue electron gun in 80cd / m2 state, monitor color temperature is 9300。K and luminance of 60cd / ㎡ Red, green and blue electron gun in 60cd / m2 state, monitor color temperature of 70cd / in 9300。K Red, green, blue electron gun voltage, monitor color temperature in ㎡ state, 80cd / ㎡ state of luminance at 9300。K The average value of the voltages obtained by measuring the number of times of the red, green, and blue electron guns at predetermined time intervals is determined as standard data.

Operation and control method according to the present invention configured as described above, first turn on the monitor and select the color temperature of 5000。K, 6500。K, 9300。K and the brightness of 60, 70, 80cd / m2 that the monitor can express (S1).

After selecting the temperature and brightness, it is determined whether the monitor correction function is selected by the correction selection button added to the monitor or the monitor correction command on the computer program (S2). If the correction function is not selected, the correction function is terminated (S3). Will perform the same function.

When the monitor calibration function is selected, the processor pauses the screen signal coming into the monitor from the current computer, and the red, green, and blue electron guns, pre-populated with three electron guns, emit the maximum electrons. It sends a signal for the screen state that is the state of the state of 255, 255, 255 (S4), and the corresponding beams of red, green, and blue are fired on the plate of the monitor and the screen appears white.

At this time, when the processor attached to the sensor unit for measuring the voltage of the three beams in the sensor unit, the sensor unit measures the voltage for each of the three beams (S5), and this data to the processor unit together with the color temperature state data of the current monitor Then, the processor unit compares the data of the three beam voltages in the standard white luminance state with respect to the corresponding monitor color temperature, and the collected data (S6), and the collected data is within the error range of the standard data. If it is out of a certain error range (S7), it is determined whether the voltage of the collected sensor data is lower than the voltage of the standard data (S8) and when it is low, the controller is instructed to lower the voltage of the electron gun (S9) To increase the voltage (S10), and when higher than the standard data, instructs to lower the voltage (S11). (S12).

If the difference between the collected data and the standard data is within a certain error range, the processor stops the signals 255, 255 and 255 sent from the processor to the monitor and returns to the signal sent from the computer to the monitor (S13). Initializes the timer (S14), activates the timer (S15) and waits for the next automatic monitor calibration.

It is determined whether the elapsed time of the next timer reaches a predetermined constant time, that is, one hour (S16). If the elapsed time does not reach a predetermined time, the timer returns to the timer initialization (S14) again and waits for a predetermined time. After the elapsed time, the red, green, and blue electron guns previously inputted with the three electron guns return to the maximum state of emitting electrons (S4), and the monitor automatic calibration operation function is restarted.

As described above, by periodically performing a command for adjusting white brightness, the user maintains a consistent white brightness while using the monitor, and as a result, maintains a screen without color change until the monitor is turned off.

In addition, the white luminance adjustment may be arbitrarily performed by modifying a program input to the processor and performing a monitor correction function using a correction selection button added to the monitor whenever a user desires or a monitor correction command on a computer program.

In this way, the adjustment of the white brightness of the monitor can be made easier and faster than the manual operation using the existing measuring equipment.

As described above, the method for automatically calibrating the monitor by controlling the voltage of the electron gun according to the present invention includes a sensor and a processor in which the white luminance correction, which is manually performed while viewing the measured data by attaching the existing measuring equipment to the screen of the monitor, is performed. By providing an automated calibration function using wealth, the monitor can be calibrated while the user is using the monitor, and the use of standard data has the effect that all users use the same state of the monitor. When used with operating software, it has the effect of ensuring consistent color images for all users at all times.

Claims (3)

The monitor includes a sensor for measuring the voltage applied to the electron gun of the monitor, a processor for comparing the voltage data obtained from the sensor with data in a standard state, and a controller for returning the result obtained from the processor to the voltage generator of the electron gun. To automatically calibrate A first step of turning on the monitor and selecting a color temperature and luminance that the monitor can express; A second step of determining whether to select a monitor correction function by using a correction selection button added to the monitor after selecting the temperature and the brightness and a monitor correction command on the computer program; If the correction function is not selected after the determination, terminating the correction function and performing a general monitor function; If the monitor correction function is selected, the processor stops the signal from the current computer to the monitor and transmits a signal for a screen state in which three electron guns, red, green, and blue, emit maximum electrons; A fifth step of, after transmitting a signal for a screen state, the sensor unit receiving a command for voltage measurement of three beams from the processor unit, measuring voltages for the beams, and passing the measured data along with color temperature data to the processor unit; A sixth step of receiving, by the processor unit, comparison data and comparing the data of the three beam voltages in the standard white luminance state with respect to the corresponding monitor color temperature and the collected data; A seventh step of determining whether the collected data of the sensor data is lower than the voltage of the standard data when it is determined that the collected data after the comparison is within an error range of the standard data and is out of a certain error range; An eighth step of raising the voltage by instructing the controller unit to lower the voltage of the electron gun when the determination is low after the determination; A ninth step of lowering the voltage by instructing the voltage to be lowered if higher than the standard data after the determination; Stopping the signal sent from the processor to the monitor and returning the signal sent from the computer to the monitor when the difference between the collected data and the standard data is within a predetermined range after the determination; An eleventh step of waiting for the next monitor automatic correction function by operating a mounted timer after signal return; A twelfth step of determining whether the elapsed time of the next timer has reached a predetermined time in a standby state and if the elapsed time does not reach a predetermined time, returning to the timer initialization and waiting for a predetermined time; And a thirteenth step of returning to the state where the red, green, and blue electron guns input by the three electron guns emit electrons at the maximum after a predetermined time, and performing the automatic monitor correction function again. The method of claim 1, wherein the standard data is A method for automatically calibrating a monitor, characterized in that, for each monitor, an electron gun voltage of red, green, and blue in a luminance value state is determined as an average value of voltages obtained by measuring a predetermined number of times at predetermined time intervals. 3. The method of claim 2, wherein said standard data determination is The color of the red, green, and blue electron guns in the state of 60cd / ㎡ of luminance value at the monitor color temperature of 5000。K, The color of the red, green, and blue electron guns in the state of 70 cd / m² with luminance value of 5000 ° K at the monitor The color of the red, green, and blue electron guns in the state of the monitor color temperature of 5000 ° K and luminance value of 80cd / ㎡, The color of the red, green, and blue electron guns in the 60cd / m² state with a color temperature of 6500ºK The color of the red, green, and blue electron guns in the state of 70cd / m² with luminance value of 6500ºK When the color temperature of the monitor is 6500。K, the voltage of the red, green, and blue electron guns with the luminance value of 80cd / ㎡, When the monitor color temperature is 9300。K, the voltage of the red, green, and blue electron guns in 60cd / ㎡ state When the color temperature of the monitor is 9300。K, the voltage of the red, green, and blue electron guns in the state of luminance of 70cd / ㎡, A monitor automatic correction method, characterized in that the voltage of the red, green, and blue electron guns in a state of luminance of 80 cd / m 2 at a luminance of 9300 ° K is determined as an average value of voltages obtained by measuring a predetermined number of times at predetermined time intervals.

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