JPH085460A - Method and device for detecting luminance and chromaticity of display monitor - Google Patents

Abstract

PURPOSE:To accurately measure the image data for calibration at a low cost by detecting luminance or chromaticity on a display monitor screen with a first light receiving sensor, and positioning a second light receiving sensor at the predetermined relative position coordinate on the screen in relation to the first sensor. CONSTITUTION:A light receiving sensor 6 of a luminance/chromaticity detector 3 measures the ignition condition of a monitor so as to obtain the base data for calibration. A sensor supporting part 7 connects the sensor 6 to a detector main body, and a monitor sucking part 5 is made of a suction cup, which is pressure-fitted to a display monitor screen 2. The first sensor 6 detects the luminance or the chromaticity on the 2, and a monitor/detector controller 4 controls positions a second light receiving sensor 6 at the predetermined relative position coordinate on the tube surface in relation to the first sensor 6. Each delay from the vertical synchronous signal and the horizontal synchronous signal at the time when the maximum luminance signal from the second sensor 6 is detected is measured, and the position coordinate of the first sensor 1 is computed on the basis of this delay and the relative position coordinate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data detecting method and apparatus for calibrating a display monitor, and more particularly to luminance / chromaticity data for calibrating luminance / chromaticity. Detection method and apparatus therefor.

[0002]

2. Description of the Related Art Conventionally, the calibration of a display monitor (hereinafter, simply referred to as a monitor) has been performed based on the measurement data of the luminance and chromaticity of the screen surface of the monitor. That is, in order to measure the luminance / chromaticity of the monitor tube surface, a luminance / chromaticity detector is attached to the monitor tube surface for measurement, and the monitor is calibrated based on the data.

Here, when mounting the detector of luminance and chromaticity on the tube surface of the monitor, the mounting position must be displayed on the tube surface, and the luminance / chromaticity detector must be mounted faithfully. I had to do it. Then, after the installation of the luminance / chromaticity detector, the necessary display was performed at that position to obtain the luminance and chromaticity data.

[0004]

However, in the conventional method, if the measuring device is attached at a position deviated from the designated position, accurate measurement may not be performed, which may adversely affect the calibration. It was

Further, in the measurement at several positions on the surface of the monitor tube, there is a problem in the correction accuracy for the position due to an incorrect mounting order or a deviation.

The present invention has been made in view of the above conventional example, and can be easily mounted on the surface of a display monitor.
An object of the present invention is to provide an image data measuring method and apparatus capable of highly accurately and inexpensively measuring image data for calibration of a display monitor.

[0007]

In order to achieve the above object, the method for detecting the luminance / chromaticity of a display monitor according to the present invention has the following configuration. That is, a first light receiving sensor for detecting the brightness or chromaticity on the display monitor screen and a second light receiving sensor placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor. A selecting means for selecting a maximum luminance signal from the luminance signal series from the second light receiving sensor; and a vertical synchronizing signal and a horizontal synchronizing signal of the display monitor at the time when the maximum luminance signal is detected. And a calculating means for calculating the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

Another aspect of the present invention is to provide a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen, and a predetermined relative position coordinate on the display monitor screen for the first light receiving sensor. A second light-receiving sensor, a selection means for selecting a maximum brightness signal from the brightness signal series from the second light-receiving sensor, and a display monitor of the display monitor at the time when the maximum brightness signal is detected. The measuring device includes a measuring unit that measures the delay from the vertical synchronization signal, and a calculating unit that calculates the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

Another aspect of the present invention is to provide a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen, and a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor. A second light receiving sensor, a plate on which a horizontal line is drawn, which is in a relative position to the first light receiving sensor and the second light receiving sensor, and a luminance horizontal line or a chromaticity horizontal line indicating a position where the horizontal line is overlapped. On the screen surface of the display monitor, selecting means for selecting the maximum luminance signal from the luminance signal series from the second light receiving sensor, and at the time when the maximum luminance signal is detected, Measuring means for measuring the delay from the vertical synchronizing signal of the display monitor, and calculation for calculating the position coordinates of the first light receiving sensor based on the delay and the relative position coordinates. And a stage.

Another aspect of the present invention is to provide a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen, and predetermined relative position coordinates on the display monitor screen for the first light receiving sensor. A second light receiving sensor placed on the plate, a plate on which a vertical line is drawn, which is in a relative position to the first light receiving sensor and the second light receiving sensor, and a luminance vertical line or color indicating a position where the horizontal line is overlapped. Display means for displaying a vertical line on the display monitor screen, selecting means for selecting a maximum luminance signal from the luminance signal series from the second light receiving sensor, and time point when the maximum luminance signal is detected Measuring means for measuring the delay from the vertical synchronizing signal of the display monitor, and calculation for calculating the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. And a stage.

According to another invention, the first light receiving sensor is
A first detection step of detecting the luminance or chromaticity on the display monitor screen surface; and a second light receiving sensor placed at predetermined relative position coordinates on the display monitor screen surface with respect to the first light receiving sensor, A second detection step of detecting the brightness or chromaticity on the display monitor screen, a selection step of selecting the maximum brightness signal from the brightness signal series from the second light receiving sensor, and the detection of the maximum brightness signal. Measurement step of measuring the delay from the vertical synchronizing signal and the horizontal synchronizing signal of the display monitor at the time when the position is adjusted, and calculating the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. And a calculation step to perform.

In another invention, the first light receiving sensor is
A first detection step of detecting the luminance or chromaticity on the display monitor screen surface; and a second light receiving sensor placed at predetermined relative position coordinates on the display monitor screen surface with respect to the first light receiving sensor, A second detection step of detecting the brightness or chromaticity on the display monitor screen, a selection step of selecting the maximum brightness signal from the brightness signal series from the second light receiving sensor, and the detection of the maximum brightness signal. Measurement step for measuring the delay from the vertical synchronization signal of the display monitor at the time of being performed, and a calculation step for calculating the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. .

According to another invention, the first light receiving sensor is
A first detection step of detecting the luminance or chromaticity on the display monitor screen surface; and a second light receiving sensor placed at predetermined relative position coordinates on the display monitor screen surface with respect to the first light receiving sensor, A second detection step of detecting the brightness or chromaticity on the surface of the display monitor, and a position at which the horizontal line of the plate having a horizontal line relative to the first light receiving sensor and the second light receiving sensor is overlapped. A display step of displaying a luminance horizontal line or a chromaticity horizontal line on the display monitor screen, a selection step of selecting a maximum luminance signal from a luminance signal series from the second light receiving sensor, and a detection of the maximum luminance signal. At the time
A measurement step of measuring a delay from the vertical synchronization signal of the display monitor and a calculation step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

According to another invention, the first light receiving sensor is
A first detection step of detecting the luminance or chromaticity on the display monitor screen surface; and a second light receiving sensor placed at predetermined relative position coordinates on the display monitor screen surface with respect to the first light receiving sensor, The second detection step of detecting the luminance or chromaticity on the display monitor screen, and the position where the vertical line of the plate having the vertical line relative to the first light receiving sensor and the second light receiving sensor are overlapped with each other. A display step of displaying a luminance vertical line or a chromaticity vertical line to be instructed on the display monitor screen surface; a selection step of selecting a maximum luminance signal from a luminance signal series from the second light receiving sensor; When the luminance signal is detected,
A measurement step of measuring a delay from the vertical synchronization signal of the display monitor and a calculation step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

In the above construction, the first light receiving sensor detects the brightness or chromaticity on the surface of the display monitor,
The second light receiving sensor is placed at a predetermined relative position coordinate on the display monitor tube surface with respect to the first light receiving sensor, and the selecting means selects the maximum from among the luminance signal series from the second light receiving sensor. A luminance signal is selected, the measuring means measures the respective delays from the vertical synchronizing signal and the horizontal synchronizing signal of the display monitor at the time when the maximum luminance signal is detected, and the calculating means calculates the delay and the delay. The position coordinates of the first light receiving sensor are calculated based on the relative position coordinates.

According to another invention, the first light receiving sensor is
Luminance or chromaticity on the display monitor screen is detected, the second light receiving sensor is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor, and the selecting means The maximum luminance signal is selected from the luminance signal series from the second light receiving sensor, and the measuring means
The delay from the vertical synchronizing signal of the display monitor at the time when the maximum luminance signal is detected is measured, and the calculating means calculates the delay based on the delay and the relative position coordinate.
Calculate the position coordinates of the light receiving sensor of.

According to another invention, the first light receiving sensor is
Detecting the luminance or chromaticity on the display monitor screen, the second light receiving sensor is placed at predetermined relative position coordinates on the display monitor screen with respect to the first light receiving sensor, and a horizontal line is drawn. The plate is placed at a relative position to the first light receiving sensor and the second light receiving sensor, and the display means displays a luminance horizontal line or a chromaticity horizontal line indicating the position where the horizontal lines are overlapped on the display monitor tube surface, The selecting means selects the maximum luminance signal from the luminance signal series from the second light receiving sensor, and the measuring means selects from the vertical synchronizing signal of the display monitor at the time when the maximum luminance signal is detected. The delay is measured, and the calculating means calculates the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

According to another invention, the first light receiving sensor is
The second light receiving sensor detects the brightness or chromaticity on the display monitor screen, and the second light receiving sensor is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor to draw a vertical line. A plate is placed at a relative position to the first light receiving sensor and the second light receiving sensor, and the display means displays a luminance vertical line or a chromaticity vertical line on the display monitor screen, which indicates a position where the horizontal line is overlapped. The maximum brightness signal is selected by the selecting means from the brightness signal series from the second light receiving sensor, and the measuring means detects the vertical direction of the display monitor at the time when the maximum brightness signal is detected. The delay from the synchronization signal is measured, and the calculating means calculates the position coordinate of the first light receiving sensor based on the delay and the relative position coordinate.

According to another invention, the first light receiving sensor is
A second light receiving sensor, which detects the brightness or chromaticity on the display monitor screen and is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor, is provided on the display monitor screen. The luminance or chromaticity is detected, the maximum luminance signal is selected from the luminance signal series from the second light receiving sensor, and the vertical synchronization signal and the horizontal synchronization signal of the display monitor are horizontally detected at the time when the maximum luminance signal is detected. The delay from the synchronization signal is measured, and the position coordinate of the first light receiving sensor is calculated based on the delay and the relative position coordinate.

According to another invention, the first light receiving sensor is
A second light receiving sensor, which detects the brightness or chromaticity on the display monitor screen and is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor, is on the display monitor screen. The luminance or chromaticity is detected, the maximum luminance signal is selected from the luminance signal series from the second light receiving sensor, and the maximum synchronization signal from the vertical synchronization signal of the display monitor at the time when the maximum luminance signal is detected. The delay is measured, and the position coordinate of the first light receiving sensor is calculated based on the delay and the relative position coordinate.

According to another invention, the first light receiving sensor is
A second light receiving sensor, which detects the brightness or chromaticity on the display monitor screen and is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor, is on the display monitor screen. A luminance horizontal line or a chromaticity horizontal line that indicates the position at which the horizontal line of the plate having the horizontal line at the relative position to the first light receiving sensor and the second light receiving sensor is overlapped is detected by the brightness monitor or the chromaticity horizontal line. The maximum luminance signal is selected from the luminance signal series from the second light receiving sensor displayed above, and the delay from the vertical synchronization signal of the display monitor at the time when the maximum luminance signal is detected is measured. Then, the position coordinates of the first light receiving sensor are calculated based on the delay and the relative position coordinates.

In another invention, the first light receiving sensor is
A second light receiving sensor, which detects the brightness or chromaticity on the display monitor screen and is placed at a predetermined relative position coordinate on the display monitor screen with respect to the first light receiving sensor, is on the display monitor screen. The luminance vertical line or the chromaticity vertical line indicating the position where the vertical line of the plate having the vertical line in the relative position to the first light receiving sensor and the second light receiving sensor is overlapped is detected. When the maximum brightness signal is displayed on the display monitor screen and the maximum brightness signal is selected from the brightness signal series from the second light receiving sensor, the vertical synchronization signal of the display monitor at the time when the maximum brightness signal is detected. The delay from
A position coordinate of the first light receiving sensor is calculated based on the delay and the relative position coordinate.

[0022]

【Example】

(Embodiment 1) According to this embodiment, in the position detection sensor whose relative position to the position where the luminance / chromaticity detector is attached is predetermined, the light emission time of the scanning line of the monitor is recorded, and the scanning line of the monitor is recorded. Calculate the time from the synchronization time of horizontal synchronization and vertical synchronization to the light emission time, calculate the position of the position detection sensor from the scanning speed of the monitor scan line or the horizontal synchronization time and vertical synchronization time, and calculate the position from the position detection sensor. The luminance / chromaticity detector position is obtained.

At the same time, the structure in which the luminance / chromaticity detector and the position detection sensor are separated from each other limits the light accumulation time in the position measurement by the luminance / chromaticity detector, the aperture size of the sensor portion of the luminance / chromaticity detector, and the like. There is no restriction, a design with a high degree of freedom can be performed, and the accuracy of measurement of luminance / chromaticity by the luminance / chromaticity detector is improved.

At the same time, the light accumulation time of the position detection sensor and the aperture can be designed to the specifications required for position detection, and the position of the luminance / chromaticity detector can be detected with high accuracy.

FIG. 1 is a diagram for explaining the details of the principle of this embodiment.

Referring to FIG. 1, FIG. 1A shows a monitor vertical synchronizing signal VSYNC, and FIG. 1B shows a horizontal synchronizing signal HSYNC. FIG. 1C shows the received light level which is the output of the luminance / chromaticity detector mounted at an arbitrary position on the monitor and the optical position sensor at a certain relative position.

When the maximum value of the light receiving level of the optical position sensor in one vertical scanning is Vpk, the time Vpt, Hpt until the occurrence time is determined. Here, Vpt is the time from the start time of the vertical synchronizing signal to the start time of horizontal scanning at which Vpk occurs. Hpt is the time from the start time of the horizontal synchronizing signal to the time when Vpt is generated. Therefore, the detection position of the position sensor on the monitor can be determined by the following formula.

Vpeek = Vpt / Hpd; Hpeek = Hpt / Ppd (Equation 1) where Hpd: Monitor 1 horizontal cycle time Ppd: Monitor 1 pixel cycle time Vpeek: Position sensor detected vertical position [line] Hpeek: Position sensor Detection horizontal position [pixel] That is, by scanning the electron beam on the monitor to output the point of maximum light emission (Vpk), detecting it, and performing the calculation of (Equation 1), Vpeek, Hpeek Can be obtained.

Further, a certain level of high sensor output can be obtained even before and after (upper and lower) horizontal lines where Vpk is generated.

The measurement of the detection position by the position sensor described above is performed in the state where the entire surface of the monitor is illuminated.

In this embodiment, a position sensor is provided in addition to the sensor for measuring the luminance and chromaticity for the monitor calibration. Since the optical aperture of this position sensor is small and the light reception reaction time of the position sensor is sufficiently shorter than the moving speed of the scanning line, the peak Vpt of the read value of the position sensor is integrated and prevented from being blunted.

FIG. 2 shows an explanatory view of an embodiment for realizing the above-mentioned principle.

FIG. 2 shows a state in which a luminance / chromaticity detector 3 is attached to an arbitrary position on a monitor tube surface 2 which is a light emitting portion on the monitor 1. Here, the monitor 1 and the luminance / chromaticity detector 3 are connected to and controlled by the monitor / detector controller 4. The monitor / detector controller 4 has a function of reading a vertical signal VSYNC of the monitor, a horizontal synchronizing signal HSYNC, and a signal to be given to the electron beam of the monitor from a video RAM (not shown). It has the function of detecting the position of the position sensor. Monitor / detector controller 4
Is disposed in the CPU board of the computer system including the monitor 1 or in the peripheral portion, but it may be configured to be a part of an independent monitor.

FIG. 3 is a block diagram showing an embodiment of the luminance / chromaticity detector.

Referring to FIG. 3, reference numeral 6 denotes a light receiving sensor portion of a luminance / chromaticity detector, which measures the light emitting state of the monitor.
The light-receiving sensor unit 6 differs depending on the purpose, such as a type that measures only luminance or a type that measures spectral luminance and chromaticity, but it provides basic data for calibration, which is the main purpose of the entire device. It is for taking. Reference numeral 7 denotes a sensor supporting portion, which has a role of connecting the light receiving sensor portion 6 to the luminance / chromaticity detector main body. Reference numeral 5 denotes a monitor suction portion, which serves as a suction cup which is made of a material such as rubber or silicon and is pressed against the monitor tube surface 2. Reference numeral 8 denotes a grip portion that is directly held or held by the operator. 31
And 32 are the same position sensors and are both attached to the luminance / chromaticity detector 3. A position sensor support portion 33 supports the position sensors 31 and 32. 9 is
The sensor controller line is mainly composed of the light receiving sensor 6, the power source lines of the position sensors 31 and 32, the sensor electric signal output line, and the insulating / reinforced portion.

With the configuration of the luminance / chromaticity detector 3 as described above, the position (vertical position, horizontal position) of the position sensor determined by the position sensor 31 and the position sensor 32 on the tube surface 2 is respectively (Vpeek1, Hpeek1). ) And (Vpeek2, Hp
eek2), since the vertical position Vpeek3 and the horizontal position Hpeek3 of the light receiving sensor unit 6 are located at the center positions of the position sensors 31 and 32, (Vpeek1 + Vpeek2) / 2; (Hpeek1 + Hpeek2) / 2; are calculated respectively. Is required by doing. Light receiving sensor section 6
Does not have to be on the midpoint of the position sensors 31 and 32, and if the positional relationship is two-dimensionally projected in the mounting direction of the tube surface, the positional relationship and the position will be no matter what the arrangement. The light receiving sensor 6 depends on the positions of the sensors 31 and 32.
Needless to say, the position of is required.

An example of this is shown in FIG.
When the positions of 32 and the light receiving sensor 6 are determined, the light receiving sensor 6
If the distance in the vertical direction and the distance in the horizontal direction are calculated, that is, d, c for the sensor 31 and a, b for the sensor 32, respectively, the position of the light receiving sensor (Vpeek3, Hpeek3) is calculated by the following equation. be able to.

Vpeek3 = (a / (a + d)). Vpeek1 + (d / (a + d)). Vpeek2 Hpeek3 = (b / (b + c)). Hpeek1 + (c / (b + c)). Hpeek2 (Formula 2) , (Equation 2) refer to the above two equations.

FIG. 4 is a diagram showing an example of an electric circuit configuration for detecting Vpeek and Hpeek in the position sensors 31 and 32, respectively. 10 is a counter for counting the vertical position, 11 is a counter for counting the horizontal position,
Reference numerals 12 and 13 are latches for holding the values of the counters 10 and 11, respectively. Reference numeral 14 is a peak detector of the sensor output of the luminance / chromaticity detector 3, which is reset by a reset signal input. After resetting, a latch signal (holding signal) is sent to the latches 12 and 13 each time the maximum value of the sensor outputs is detected. Therefore, the latches 12 and 13 latch the output values of the counters 10 and 11 many times during one vertical cycle period, but when the peak detector 14 determines the maximum value Vpk after the completion of one vertical cycle, The output of the counter 10/11 at the vertical / horizontal position is held in the latch 12/13,
It becomes Vpeek and Hpeek.

Latch 1 via CPU bus I / F 15
The outputs of 2 and 13 are controlled, and Vpeek, H
peek is read by a CPU (not shown). Here, the CPU (not shown) is a monitor 1 and a luminance / chromaticity detector 3.
It is a central processing unit that controls the entire system such as.

Then, this CPU obtains Vpeek3 and Hpeek3 as the midpoints of the two position sensors 31 and 32 by calculating the following formula. (Vpeek1 + Vpeek2) / 2; (Hpeek1 + Hpeek2) / 2; Thereby, the position of the light receiving sensor unit 6 is determined.

Further, Vpeek obtained in this way
The values of 3 and Hpeek3 are the positions Vpeek4 and Hpee obtained in advance by another accurate position measuring method of the light receiving sensor unit.
The correction process may be performed using the differences ΔVp and ΔHp from k4 as correction values.

This correction processing makes it possible to absorb mechanical deviations in the mounting positions of the position sensors 31 and 32 and the emission delay time of the phosphor with respect to the electron beam of the monitor. (Embodiment 2) FIG. 5 is an explanatory view of another embodiment for detecting the position of the luminance / chromaticity detector attached to the monitor.

Referring to FIG. 5, 21 is a time counter which starts with a vertical synchronizing signal, 22 is a latch, and 14 is a peak detector. The time counter starts counting after being reset to zero at the rising edge which is the start time of the vertical synchronizing signal. On the other hand, when the peak detector 14 receives the output of the position sensor 31 or 32 of the luminance / chromaticity detector 3 and detects the maximum value, it sends a latch signal to the latch 22 to hold the value of the time counter 21. In this way, the count value at the time of occurrence of the maximum value Vpk within one vertical synchronization signal period is C after being held in the latch 22.
It is taken in by a CPU (not shown) via the PU data bus.

When the time unit of the time counter 21 does not indicate the time as it is, the CPU calculates Tp = N [count] × t [sec / count] from the count value N and the time t of 1 count. And Tp is calculated. Thus, the vertical position Vpeekn of the position sensor Hpeekn horizontal position Hpeekn (n = 1 or 2) from the time Tp from the start time of the vertical synchronization signal to the occurrence of Vpk
Is required. Vpeekn = Tp / Hpd (cut off too much) Hpeekn = (Tp-Vpeek * Hpd) / Ppd Ppd: 1 pixel cycle time Hpd: 1 horizontal cycle time Thus, if Vpeekn and Hpeekn are obtained, the first embodiment Similarly, the light receiving sensor positions Vpeek3 and Hpeek3 are obtained.

FIG. 6 is a diagram showing a simple configuration example of the peak detector 14 of the first and second embodiments.

The sensor output of the luminance / chromaticity detector 3 is
When input to the A / D converter 25, the sensor output is converted into a digital value. This value is the comparator 26 and the latch 2
7 is input. The output of the latch 27 is also input to the comparator 26, and the comparator 26 compares the outputs of the A / D converter 25 and the latch 27, and the output of the latch 27 is the A / D converter 25. When it is smaller, the sensor output of the luminance / chromaticity detector 3 is regarded as the maximum, and a latch signal is generated and output to the outside. The outside is the latches 12 and 13.

The output of the comparator 26 is also input to the latch 27, and the A / D converter 2 determined to have the maximum value.
The output of 5 is held in the latch 27. Therefore, the output of the latch 27 always holds the maximum value input so far, and when the maximum value is newly input through the A / D converter 25, it is latched in the latch 27 by the comparison result of the comparator 26. Be redone. By such an operation, the latch signal is output from the comparator 26 several times, but the finally output latch signal corresponds to the true maximum value of the sensor output. Further, the latch 27 receives the external reset signal and the held data is cleared to “0”. Therefore, the peak detector 14 is first operated by applying the reset signal. (Third Embodiment) FIG. 8 is a diagram showing a third embodiment.

FIG. 8A is a modification of the luminance / chromaticity detector 3 shown in FIG. One position sensor is attached to the position sensor support portion 31. A transparent plate 40 is attached to the grip portion 8, and a semi-transparent guideline is printed on the transparent plate. This is shown in FIGS. 8B and 8C. The dashed line is the semi-transparent guideline.

In this embodiment, the size of the transparent plate, the number of guidelines, etc. are not limited.

For the purpose of monitor calibration,
When the luminance / chromaticity detector is attached to the monitor tube surface, a guideline as shown in FIGS. 8D and 8E is displayed on the tube surface. The operator superimposes the guideline on the transparent plate 40 attached to the brightness / chromaticity detector and the guideline on the monitor tube surface, or sets them so as to be parallel to each other. In this way, the position sensor support portion 33
If the length of the position sensor 31, that is, the distance between the position sensor 31 and the light receiving sensor portion 6 is clear, and the angle between the support portion 33 and the guideline on the transparent plate is determined, the light receiving sensor from the position on the monitor tube surface of the position sensor 31. The position of the part 6 on the monitor tube surface can be easily determined, and only one position sensor is required.

As an example thereof, as shown in FIG. 13, the distance (length) from the position sensor 31 to the light receiving sensor 6 is set to 1 and the position when the guideline of the transparent plate 40 and the guideline on the monitor tube surface 2 are overlapped. If the angle formed by the sensor support portion 33 and the horizontal direction of the monitor tube surface is θ, then Vpeek3 = Vpeek1−l · sin θ / PV Hpeek3 = Hpeek1−l · cos θ / PH where (Vpeek3, Hpeek3): light receiving sensor Position 6 (Vpeek1, Hpeek1): Position of position sensor 31 PV: Vertical pixel density [line / mm] PH: Horizontal pixel density [pixel / mm], and the position of the light receiving sensor 6 can be determined.

FIG. 9 is similar to FIG. 8A, but the position sensor support portion 33-1 is bent so that the position sensor 31 is closer to the monitor.

However, the point of caution in this embodiment is that when the guideline on the monitor and the guideline on the transparent plate 40 are overlapped, the guideline of the monitor is set at the detection position of the position sensor in order to stabilize the output of the position sensor. It is necessary that they do not overlap.

When a luminance / chromaticity detector as shown in FIG. 8B is used, the guidelines on the monitor are as shown in FIGS. 10A, 10B and 10C. It is allowed to insert an even number of guide lines between the guide lines of the detector, and the guide line of the luminance / chromaticity detector may be aligned with any line. However, in FIG.
The distance lm indicated by 0 needs to be sufficiently large.

Similarly, when the luminance / chromaticity detector shown in FIG. 8C is used, as shown in FIGS. 11A and 11B,
When the monitor / detector guidelines are overlapped with each other, the monitor guidelines do not overlap the position sensor 31, and all of l1, l2, and l3 have a sufficiently large value.

Further, the guideline on the transparent plate of the luminance / chromaticity detector 3 and the guideline of the monitor are not necessarily "lines" but may be markings as shown in FIGS. 12 (A) and 12 (B). Absent. Also in this case, when the markings are overlapped with each other, the position sensor 31
It is preferable that the positional relationship be considered so that the detection position and the marking do not overlap.

The guideline and marking arrangement are as follows:
You don't have to be trapped vertically or horizontally on your monitor. That is, as described with reference to FIG. 7, the position of the light receiving sensor is obtained from the position of the position sensor. (Embodiment 4) In Expression 1 of Embodiment 1, the vertical position Vpeek detected by the position sensor and the horizontal position Hpeek detected by the position sensor consider the delay of the response of the fluorescence of the monitor and the delay of the signal in the sensor. There wasn't.

In the fourth embodiment, the image data measurement which can be easily mounted on the surface of the display monitor in consideration of this delay and can perform the measurement of the image data for the calibration of the display monitor with high accuracy and at low cost. The device will be described.

According to the expression 1 of the first embodiment, the vertical position Vpeek detected by the position sensor and the horizontal position Hpeek detected by the position sensor
Considering the delay of the fluorescence response of the monitor, the delay of the signal in the sensor, etc., Vpeek = Vpt / Hpd-Dv; Hpeek = Hpt / Ppd-Dh (Equation 3) where Hpd: Monitor 1 horizontal period Time Ppd: Monitor 1 pixel cycle time Vpeek: Position sensor detection vertical position [line] Hpeek: Position sensor detection horizontal position [pixel] Dv: Vertical position correction value due to internal delay DH: Horizontal position correction value due to internal delay To be In particular, when the aperture of the light receiving portion of the sensor of the detector is large, the integrated values at a plurality of positions are detected as Vpk, so Vpk may occur after the entire sensor aperture is scanned with the electron beam, and the vertical direction may occur. Directional correction value D
It is possible that V will be large enough.

DV and DH are actually attached to the detector,
It is possible to obtain the values by actually measuring the sensor positions Vpeek and Hpeek, measuring Vpt and Hpt, and substituting these values into (Equation 3). Get in advance. By this, it is possible to remove the error element related to the deviation of the detection position.

When obtaining the detector mounting position, the monitor is operated with the entire screen lit.

If the opening of the detector sensor is not small, DV and DH will be small.

Further, the light receiving and accumulating time of the sensor is set to be short to prevent the peak Vpk of the reading value of the sensor from being integrated.

The embodiment for realizing the above-mentioned principle is as follows.
It is shown in FIG. 2 already described.

An example of the electric circuit configuration for detecting Vpeek and Hpeek in the fourth embodiment is shown in FIG. 4 already described.

Reference numeral 10 is a counter for counting the vertical position, 11 is a counter for counting the horizontal position, and 12, 1
Reference numeral 3 is a latch for holding the values of the counters 10 and 11 as needed. Reference numeral 14 is a peak detector of the sensor output of the detector 3, which is reset by a reset signal. Then, each time the maximum value of the sensor outputs input after the reset is detected, the latches 12, 13 are
Sends a latch signal (holding signal) to. Therefore, latch 1
2, the latch 13 latches the output values of the counter 10 and the counter 11 many times during one vertical cycle period, but the value finally determined by the peak detector 14 after the completion of one vertical cycle is Vpk. Therefore, the output of the counter 10 at the vertical position when Vpk occurs is held in the latch 12, and the output of the counter 11 at the horizontal position is held in the latch 13, and these values become Vpeek and Hpeek. These V
The peek and Hpeek are read by the CPU that controls the entire system such as the monitor 1 and the detector 3 while the outputs of the latches 12 and 13 are controlled by the CPU bus I / F 15, and are the final values for detecting the position of the detector. Become. However, this value is Vpeek, H given by (Equation 1)
If it is peek and Vpeek and Hpeek given by the position-corrected (Equation 3) are required, the true value obtained by an input device such as a keyboard connected to the CPU or another special accurate and accurate detection means. Vpeek, Hpeek and latch 12,
The correction values DV and DH are obtained in advance from the value of the difference between Vpeek and Hpeek obtained from the CPU bus I.
The value fetched by the CPU from / F15 may be always corrected. This will be executed only once once the detector is determined, and will be stored in a register or memory in the CPU (not shown).
Remember V and DH.

Further, the correction by the CPU is avoided and the latch 1
2, a configuration example in which a subtracter is provided between the latch 13 and the CPU bus I / F 15 and the correction value is subtracted by hardware is shown in FIG.

Referring to FIG. 14, when register 51 and register 52 are set to "0", nothing is performed in subtractors 53 and 54, and as described above, Vpe defined by (Equation 1) is used.
ek and Hpeek are taken into the CPU. Then, the correction value DV is calculated from the accurate detector position obtained by another position detection.
, DH is determined, the CPU uses the CPU bus I / F1
DV is set in the register 51 and DH is set in the register 52 via 5. This operation is performed only once for the purpose of adjusting the detector 3, and is performed at the time of factory shipment.

Therefore, normally, DV and DH are read from a register or memory in the CPU (not shown), and the register 5 is read.
If it is set to 1, 52, correction is automatically performed by the subtracter 53 and the subtractor 54, and the C is added via the CPU bus I / F 15.
A value is taken into PU.

As described above, according to the fourth embodiment,
The internal delay element is also corrected, and more accurate position detection becomes possible. (Embodiment 5) FIG. 15 shows still another example of the position detection circuit.

This circuit configuration has a latch 12 and a latch 13.
And a CPU bus I / F 15 are provided with a further stage latch. In this embodiment, parts different from those in FIG. 4 will be mainly described.

A vertical synchronizing signal VSYNC is input to the peak detector 14 as a reset signal. After that, a latch signal is generated each time the value input from the counter 10 is the highest value, and the vertical position and horizontal position at that time are held in the latches 12 and 13. Therefore, at the end of one vertical cycle, the vertical and horizontal positions of Vpk are latched by the latches 12 and 13. These values are the latches 55,
The latch 66 is latched again at the start of the vertical synchronizing signal. Therefore, the latches 12 and 13 are latched one after another each time the sensor output value is maximum within one vertical period, but the latches 55 and 56 are vertical to Vpk determined to be the maximum value within one vertical period. -The horizontal position is latched. Therefore, the CPU not shown is the CPU bus I /
It is possible to improve the detection accuracy by reading the values of the latches 56, 56 several times via F15, reading the detector positions in a plurality of vertical cycle periods, and obtaining the average value thereof. The present invention may be applied to a system including a plurality of devices or an apparatus including one device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

As described above, according to this embodiment, no matter where the luminance / chromaticity detector is attached to the monitor surface of the monitor, the attachment position is detected to determine the luminance / chromaticity on the monitor surface. Etc. can be measured. Further, by separating the position sensor and the light receiving sensor, it is possible to design according to their respective purposes, the circuit can be simplified, and the position detection and the light receiving level can be improved in accuracy.

In particular, it is possible to design the position sensor so as to enhance the directivity and the speed of response, thereby improving the position detection accuracy. Further, by displaying the guideline on the monitor and superimposing it on the guideline of the luminance / chromaticity detector, it is possible to reduce the cost by using one position detection sensor.

As described above, according to the present invention, the display monitor can be easily mounted on the surface of the display monitor, and the measurement of the image data for the calibration of the display monitor can be performed with high accuracy and at low cost.

[0076]

[Brief description of drawings]

FIG. 1 is a timing chart diagram illustrating the principle of an embodiment according to the present invention.

FIG. 2 is a diagram showing an outline of a first embodiment.

FIG. 3 is a configuration diagram of a luminance / chromaticity detector according to the first exemplary embodiment.

FIG. 4 is a configuration diagram of a circuit that calculates a position of a luminance / chromaticity detector according to the first exemplary embodiment.

FIG. 5 is a configuration diagram of a circuit that calculates a position of a luminance / chromaticity detector according to the second embodiment.

FIG. 6 is a diagram showing a simple configuration example of a peak detector 14 according to the first and second embodiments.

FIG. 7 is a diagram showing a principle of obtaining a position of a light receiving sensor from a position sensor.

FIG. 8A is a diagram showing a configuration of a luminance / chromaticity detector according to a third embodiment.

FIG. 8B is a diagram showing a configuration of a luminance / chromaticity detector according to the third embodiment.

FIG. 8C is a diagram showing a structure of a luminance / chromaticity detector according to the third embodiment.

FIG. 8D is a diagram showing the configuration of the guideline for mounting the luminance / chromaticity detector on the monitor tube surface in the third embodiment.

FIG. 8E is a diagram showing a configuration of guide lines for mounting the luminance / chromaticity detector on the monitor tube surface in the third embodiment.

FIG. 9 is a diagram showing another configuration example of a luminance / chromaticity detector.

FIG. 10 is a diagram showing a configuration of a guideline for mounting the luminance / chromaticity detector on the monitor tube surface in the third embodiment.

FIG. 11 is a diagram showing a configuration of a guideline for mounting the luminance / chromaticity detector on the monitor tube surface in the third embodiment.

FIG. 12 is a diagram showing a marking configuration for mounting a luminance / chromaticity detector on a monitor tube surface.

FIG. 13 is a diagram showing a horizontal / vertical direction of a monitor and a positional relationship between a position sensor and a light receiving sensor.

FIG. 14 is a diagram showing a circuit configuration for obtaining a position of a luminance / chromaticity detector by hardwarely correcting an internal delay element in the fourth embodiment.

FIG. 15 is a diagram showing another circuit configuration for acquiring the position of the luminance / chromaticity detector in the fifth embodiment.

[Explanation of symbols]

 1 Monitor 2 Monitor Tube Surface 3 Luminance / Chromaticity Detector 4 Monitor / Detector Controller 5 Monitor Adsorption Section 6 Light-Reception Sensor Section 7 Sensor Support Section 8 Grip Section 9 Sensor Control Line 10, 11 Counter 12, 13 Latch 14 Peak Detector 15 CPU bus I / F 31, 32 Position sensor 33 Position sensor support 21 Time counter 22 Latch 25 A / D converter 26 Comparator 27 Latch 40 Transparent plate

Claims (22)

[Claims] 1. A luminance / chromaticity detection device for measuring luminance or chromaticity on a display monitor screen surface, comprising: a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen surface; A second light receiving sensor placed at predetermined relative position coordinates on the display monitor tube surface with respect to one light receiving sensor, and selecting means for selecting the maximum brightness signal from the brightness signal series from the second light receiving sensor. Measuring means for measuring respective delays from the vertical synchronizing signal and the horizontal synchronizing signal of the display monitor at the time when the maximum luminance signal is detected, and the first and second measuring means based on the delay and the relative position coordinate. And a calculating means for calculating the position coordinates of the light receiving sensor of 1. 2. The second light receiving sensor is at least two in number, and each of the second light receiving sensors has a different predetermined relative position on the display monitor tube surface with respect to the first light receiving sensor. The luminance / chromaticity detection device according to claim 1, wherein the luminance / chromaticity detection device is placed at coordinates. 3. The delay is the number of horizontal lines from the vertical sync signal of the display monitor and the number of pixels from the horizontal sync signal at the time when the maximum luminance signal is detected. 1. The luminance / chromaticity detection device according to 1. 4. The calculating means further corrects the position coordinates of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection device according to claim 1. 5. A luminance / chromaticity detection device for measuring luminance or chromaticity on a display monitor screen, comprising: a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen; A second light receiving sensor placed at predetermined relative position coordinates on the display monitor tube surface with respect to a first light receiving sensor, and a selection for selecting a maximum brightness signal from a brightness signal series from the second light receiving sensor. Means for measuring the delay from the vertical synchronizing signal of the display monitor at the time when the maximum luminance signal is detected; and a position of the first light receiving sensor based on the delay and the relative position coordinates. A luminance / chromaticity detection device comprising: a calculation unit that calculates coordinates. 6. The second light receiving sensor is at least two in number, and each of the second light receiving sensors has a different predetermined relative position on the display monitor tube surface with respect to the first light receiving sensor. The luminance / chromaticity detection device according to claim 5, wherein the luminance / chromaticity detection device is placed at coordinates. 7. The calculation means further corrects the position coordinates of the first light receiving sensor based on the delay of fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection device according to claim 5. 8. A luminance / chromaticity detection device for measuring luminance or chromaticity on a display monitor screen surface, comprising: a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen surface; A second light receiving sensor placed at a predetermined relative position coordinate on the surface of the display monitor with respect to the first light receiving sensor, and a horizontal line at a relative position to the first light receiving sensor and the second light receiving sensor are drawn. Plate, display means for displaying a luminance horizontal line or a chromaticity horizontal line indicating the position where the horizontal line is overlapped on the display monitor screen, and a maximum luminance signal from the luminance signal series from the second light receiving sensor. Selecting means for selecting, a measuring means for measuring a delay from a vertical synchronizing signal of the display monitor at the time when the maximum luminance signal is detected, and the delay Serial relative based on the position coordinates, luminance / chromaticity detecting apparatus characterized by comprising a calculating means for calculating the position coordinates of the first light receiving sensor. 9. The calculating means further corrects the position coordinates of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection device according to claim 8. 10. A luminance / chromaticity detection device for measuring luminance or chromaticity on a display monitor screen surface, comprising: a first light receiving sensor for detecting luminance or chromaticity on the display monitor screen surface; A second light receiving sensor placed at a predetermined relative position coordinate on the display monitor tube surface with respect to a first light receiving sensor, and a vertical line at a relative position to the first light receiving sensor and the second light receiving sensor. From a luminance signal sequence from the second light receiving sensor, a drawn plate, display means for displaying a luminance vertical line or a chromaticity vertical line indicating a position where the horizontal line is overlapped on the display monitor screen. Selecting means for selecting a maximum luminance signal; measuring means for measuring a delay from a vertical synchronizing signal of the display monitor at the time when the maximum luminance signal is detected; The relative based on the position coordinates, luminance / chromaticity detecting apparatus characterized by comprising a calculating means for calculating the position coordinates of the first light receiving sensor. 11. The calculating means further corrects the position coordinates of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection device according to claim 10. 12. A luminance / chromaticity detection method for measuring luminance or chromaticity on a display monitor screen, wherein the first light receiving sensor detects the luminance or chromaticity on the display monitor screen. A first detecting step, and a second light receiving sensor placed at a predetermined relative position coordinate on the display monitor tube surface with respect to the first light receiving sensor detects a luminance or a chromaticity on the display monitor tube surface. 2 detection step, a selection step of selecting a maximum luminance signal from the luminance signal series from the second light receiving sensor, and a vertical synchronization signal of the display monitor at the time when the maximum luminance signal is detected. A measurement step of measuring a delay from the horizontal synchronization signal, and a calculation step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. Detection method of luminance / chromaticity, characterized in that. 13. The second light receiving sensor is at least two in number, and each of the second light receiving sensors has a different predetermined relative position on the display monitor tube surface with respect to the first light receiving sensor. The method for detecting luminance / chromaticity according to claim 12, wherein the luminance / chromaticity is placed at coordinates. 14. The delay is the number of horizontal lines from the vertical sync signal of the display monitor and the number of pixels from the horizontal sync signal at the time when the maximum luminance signal is detected. 12
The method for detecting the luminance / chromaticity according to. 15. The calculation step further corrects the position coordinates of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection method according to claim 12. 16. A luminance / chromaticity detection method for measuring luminance or chromaticity on a display monitor screen surface, wherein the first light receiving sensor detects the luminance or chromaticity on the display monitor screen surface. A first detecting step, and a second light receiving sensor placed at a predetermined relative position coordinate on the display monitor tube surface with respect to the first light receiving sensor detects a luminance or a chromaticity on the display monitor tube surface. 2 detection step, a selection step of selecting a maximum luminance signal from the luminance signal series from the second light receiving sensor, and a vertical synchronization signal of the display monitor at the time when the maximum luminance signal is detected. And a calculation step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. The detection method of the time. 17. The second light receiving sensor is at least two, and each of the second light receiving sensors has a different predetermined relative position on the display monitor tube surface with respect to the first light receiving sensor. The method for detecting luminance / chromaticity according to claim 16, wherein the luminance / chromaticity is set at coordinates. 18. The calculation step further corrects the position coordinates of the first light receiving sensor based on the delay of fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection method according to claim 16. 19. A luminance / chromaticity detection method for measuring luminance or chromaticity on a display monitor screen surface, wherein the first light receiving sensor detects the luminance or chromaticity on the display monitor screen surface. A first detecting step, and a second light receiving sensor placed at a predetermined relative position coordinate on the display monitor tube surface with respect to the first light receiving sensor detects a luminance or a chromaticity on the display monitor tube surface. And a luminance horizontal line or a chromaticity horizontal line indicating a position at which the horizontal line of the plate having a horizontal line at a relative position to the first light receiving sensor and the second light receiving sensor is superposed on the display monitor screen. A display step of displaying, a selection step of selecting a maximum luminance signal from the luminance signal series from the second light receiving sensor, and a time point when the maximum luminance signal is detected. A measuring step of measuring a delay from a vertical synchronizing signal of the display monitor, and a calculating step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. Luminance / Chromaticity detection method. 20. The calculation step further corrects the position coordinate of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection method according to claim 19. 21. A luminance / chromaticity detection method for measuring luminance or chromaticity on a display monitor screen surface, wherein the first light receiving sensor detects the luminance or chromaticity on the display monitor screen surface. A first detecting step, and a second light receiving sensor placed at a predetermined relative position coordinate on the display monitor tube surface with respect to the first light receiving sensor detects a luminance or a chromaticity on the display monitor tube surface. And a luminance vertical line or a chromaticity vertical line that indicates a position at which the vertical line of the plate having the vertical line in a relative position to the first light receiving sensor and the second light receiving sensor is overlapped. A display step of displaying on a tube surface, a selection step of selecting a maximum brightness signal from a brightness signal series from the second light receiving sensor, and a time point when the maximum brightness signal is detected. A measuring step of measuring a delay from a vertical synchronizing signal of the display monitor, and a calculating step of calculating a position coordinate of the first light receiving sensor based on the delay and the relative position coordinate. Luminance / Chromaticity detection method. 22. The calculation step further corrects the position coordinates of the first light receiving sensor based on the delay of the fluorescence response of the display monitor and the signal transmission delay of the first light receiving sensor. The luminance / chromaticity detection method according to claim 21.