JPH0974576A - Detector location detection system and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the location on the display device tube surface of a detector by determining a maximum measured value from the measured value obtained by the detector and determining the location of the detector for a small area from the maximum measured value. SOLUTION: A detector 3 is mounted on a monitor tube surface 2, the light emitting state and the state of the color of a monitor 1 are measured and the data for proofreading the monitor 1 is obtained. A linear scanning is performed for the small area which is preliminarily fixed on the monitor tube surface 2 and a point scanning is also performed. Therefore, the picture element of the small area emits light for every picture element (or several picture elements) and the remaining parts do not emit light. Next, the measured value by the detector 3 is fetched into a CPU 7. The fetched detection value and the highest measured value so far are compared. As a result of the comarison, when the measured value is larger than the highest measured value so far, the light emitting location and the measured value are recorded. The obtained highest detection value is defined as the maximum detection value and the light emitting location corresponding to this value is finally recognized as the mounting location of the detector 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detector position detecting system and method for detecting the position of a detector for calibrating a display device on the tube surface of the display device.

[0002]

2. Description of the Related Art Conventionally, in order to calibrate a monitor, the brightness, chromaticity, etc. of the monitor screen are measured. In order to obtain information for calibration, the measurement position was previously displayed on the monitor tube surface, the detector was correctly attached at that position, and then various brightness and colors were displayed at that position, and the measurement results were read. .

[0003]

If the detector is mounted at a displaced position, accurate measurement cannot be performed and the effect of calibration is adversely affected. Therefore, it is necessary to mount the detector accurately at the measuring position. However, it was difficult to mount the detector accurately at the designated measurement position from the beginning. Also, the operator of the measuring instrument was forced to use extra nerves.

An object of the present invention is to solve the above problems and to provide a detector position detection system and method capable of detecting the position of the detector on the tube surface of the display device.

[0005]

[Means for Solving the Problems]

1) A detector position detection system according to the present invention includes a light emitting unit that emits light in a small area at a predetermined position on a display surface of a display device, a scanning unit that scans the small area emitted by the light emitting unit in a point manner, A detector attached to a small area for measuring the luminance and chromaticity of each scanning position by the scanning means, and obtaining a maximum measurement value from the measurement values obtained by the detector, and from the maximum measurement value to the small area Means for determining the position of the detector with respect to.

2) The detector position detecting system according to the present invention is mounted on the display surface of a display device, and has a predetermined detector including a detector for measuring luminance and chromaticity and a detector mounting surface of the display surface of the display device. Light emitting means for emitting light in the area of the range, scanning means for performing point scanning on the area of the predetermined area emitted by the light emitting means, position coordinates of the display surface, and storage means for storing measured values by the detector at the position. And a take-out means for taking out the peak value or the maximum value from the measured value stored in the storing means and taking out the position corresponding to the value.

3) In the detector position detecting system described in 2) above, the horizontal mounting position of the detector is determined by an average value or a weighted average value of peak values for each of a plurality of horizontal lines near a candidate vertical position. In addition, for each of a plurality of horizontal lines in the vicinity of the candidate vertical position, a total value of the measured values is obtained, and a determining means for determining the vertical mounting position of the detector based on the peak value of the total value is further provided. It is characterized by having.

4) A detector position detecting system according to the present invention comprises a color system display means for displaying at least a part of a predetermined color system and the coordinate system of the color system displayed by the color system display means. Storage means for storing a table of coordinates of the display surface of the color system display means, a detector attached to the color system display means for detecting luminance / chromaticity, and luminance / color detected by the detector And a calculating unit for calculating the display surface coordinates from the obtained position based on the table of the storing unit.

5) A detector position detecting system according to the present invention comprises a gradation display means for displaying a gradation, a detector for measuring a gradation displayed by the gradation display means, a measurement value measured by the detector, and the gradation display. And a mounting position calculating unit for calculating the mounting position of the detector from the number of pixels in the gradation direction displayed on the unit.

6) A detector position detecting method according to the present invention comprises the steps of causing a small area at a predetermined position on a display surface of a display device to emit light, performing a point scan of the emitted small area, and the small area. The method further comprises a step of obtaining a maximum measurement value from a measurement value obtained by the detector attached to, and a step of obtaining a position of the detector with respect to the small area from the obtained maximum measurement value.

7) According to the detector position detecting method of the present invention, a step of causing a predetermined range of the display surface of the display device including the detector mounting surface to emit light, and a point scan of the predetermined range of the emitted light. And a step of extracting a peak value or a maximum value from the previously stored position coordinates of the display surface and a measured value by the detector for the position, and a step of extracting a position corresponding to the obtained value. It is characterized by

8) In the detector position detecting method described in 7) above, the horizontal mounting position of the detector is determined by an average value or a weighted average value of peak values for each of a plurality of horizontal lines near a candidate vertical position. In addition, the method further comprises a step of obtaining a total value of the measured values for each of a plurality of horizontal lines in the vicinity of the candidate vertical position and determining a vertical mounting position of the detector based on the peak value of the total value. It is characterized by that.

9) A detector position detecting method according to the present invention comprises a step of displaying at least a part of a predetermined color system on a display device, and a step of detecting luminance / chromaticity by a detector attached to the display device. A step of obtaining a position in the color system from the detected luminance and chromaticity and calculating display surface coordinates from the obtained position based on a table stored in the storage means. .

10) The detector position detecting method according to the present invention comprises a step of displaying a gradation on a display device, a step of measuring with a detector attached to the display device, a measurement value obtained by the measurement, and a displayed gradation. Calculating a detector mounting position from the number of pixels in the direction.

11) When the mounting position of the measuring device may be slightly deviated from the surface of the display device, the operator mounts the measuring device at an approximate position, and then accurately detects the mounting position. Then, it suffices to make only that part emit light. The purpose of partial light emission is to prevent the invasion of light that has indirectly entered the measuring instrument, to save power,
It is to measure a local light emission characteristic or perform shading correction according to the local light emission characteristic.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> FIG. 1 shows a first embodiment of the present invention. In FIG. 1, reference numeral 1 is a monitor for displaying images and the like. Reference numeral 3 is a detector, which is mounted on the monitor tube surface 2 to obtain the calibration data of the monitor 1 by measuring the light emission state and color state of the monitor 1, and at the same time,
The data for detecting the position of the detector 3 itself on the monitor tube surface 2 is obtained. A controller 4 supplies power to the detector 3 and inputs / outputs detection signals, is connected to the CPU bus of the CPU 7, and exchanges data. The CPU 7 calibrates the monitor 1 as well as the CPU of the entire computer system including the monitor 1.
It is. Therefore, the controller 4 and the video memory 6 are incorporated in the system. 7a is ROM (read only mem
ory), and the control program is stored. Reference numeral 7b is a RAM (random access memory), which is a work area. Reference numeral 6 is a video memory, which is a CP via the CPU bus.
U7 writes the data to be displayed on the monitor. The reading circuit 5 sequentially reads the image data from the video memory 6 at the video rate and outputs the image data to the monitor 1. At the same time, the read circuit 5 gives a sync signal, which is a read sync signal of the video memory 6, to the monitor 1 to synchronize the monitor image signal.

A predetermined small area on the monitor tube surface 2 is linearly scanned and point-scanned as shown in FIG. Therefore, the pixels in the small area emit light for every one pixel (or several pixels), and the remaining portion does not emit light.

FIG. 3 is a flow chart showing an example of the detector position detection program stored in the ROM 7a shown in FIG. A detector is previously attached to a predetermined small area on the monitor tube surface 2. In this state, step S
At 1, the point scanning position is initialized to (0,0) and the maximum measured value is initialized to 0. In step S2, the position of the first point of point scanning is set as the point scanning position, and only that position is caused to emit light. Then, in step S3, the measured value by the detector 3 is loaded into the CPU 7. Step S4
At, the detected value taken in is compared with the highest measured value up to that point. In the first scan, it will be compared with the initially set value 0.

As a result of the comparison, if the measured value is larger than the highest measured value up to that point, the light emitting position and the measured value are recorded in step S5. Then, in step S6,
It is determined whether or not the point scanning has been completed over the small area. On the other hand,
As a result of the determination in step S4, if the measured value is less than the highest measured value up to then, the process proceeds to step S6. As a result of the determination in step S6, if the point scanning is not completed over the small area, the process returns to step S2. In step S2, the point scanning is sequentially performed, and if completed, the process proceeds to step S7. In step S7, the maximum detection value obtained in step S5 is set as the maximum detection value, and the light emitting position corresponding to this maximum detection value is finally recognized as the mounting position of the detector 3, and then the process ends. To do.

Although the light emitting area at the light emitting position is not particularly limited in this embodiment, when the light emitting area greatly exceeds the light receiving area of the detector 3, or vice versa, the light receiving area is larger than the light emitting area. If it is larger, the highest detection value obtained in step S3 may continue with the same value.

When the point scanning in step S2 is performed for each pixel or has a small step width, the highest detection value obtained in step S3 may continue to have the same value. In these cases, the light emission position based on the finally obtained highest detection value is recorded in step S5.

Further, when it is determined in step S4 whether or not the measured value exceeds the highest value up to now, the same value is obtained, and the light emission obtained at the beginning of the highest value continues. The position will be recorded in step S5.

Originally, when the maximum value continues, the central position is considered to be the position of the detector 3, so that the step S4 is performed.
In the case of whether the detected value is greater than or equal to the highest value up to now and the case where the detected value exceeds the highest value up to now, the procedure shown in FIG. The position (= average value) should be taken.

Further, processing is performed for one of these two cases, and the light emitting size, the light receiving size,
A correction value based on the scanning interval of the light emitting position may be prepared in advance and added or subtracted to the detector position in step S7. This correction value can be easily obtained by, for example, obtaining a difference from the actually measured value of the detector position.

<Second Embodiment> FIG. 4 shows a second embodiment of the present invention.
An embodiment will be described. In FIG. 4, reference numeral 12 is a counter, which counts the vertical scanning line position of the monitor 1.
It is cleared by the vertical sync signal VSYNC of the monitor and counted up by the horizontal sync signal of the monitor 1. A counter 13 counts the horizontal scanning line position of the monitor 1, the counter value is cleared by the vertical synchronizing signal of the monitor 1, and is counted up by the pixel synchronizing signal. Reference numeral 11 is an A / D converter, which converts the output of the detector 3 into a digital value.
Reference numeral 14 is a memory unit, the value of the counter 12 is given as an upper address, and the value of the counter 13 is given as an upper address. The data from the A / D converter 11 is stored in the address designated by the counters 12 and 13 of the memory unit 14. Reference numeral 15 denotes a CPU, which controls each unit according to a control program stored in the ROM 15a. A RAM 15b is a work area.

When the entire surface of the monitor tube surface 2 is made to emit light, the output value of the detector 3 becomes maximum when the scanning line passes directly under the detector 3, so that the CPU 15 reads the data from the memory unit 14, and the maximum value becomes The obtained address value is recognized as the mounting position of the detector 3.

Since the detector output is proportional to the integrated energy of the aperture, if the aperture of the detector 3 is wide, the detector output may reach the maximum value when the scanning line passes through the aperture. Therefore, it is necessary to correct the actually recognized mounting position, for example, subtract or add the correction value. This correction value can be obtained as in the first embodiment.

In the present embodiment, an example in which the monitor 1 is entirely illuminated is explained, but the monitor 1 is partially illuminated, and the light emitting position is given as the upper and lower addresses of the memory unit 14, and the A / D converter 11 is used. The data may be stored in the memory unit 14. By scanning the partial emission over the entire surface of the monitor 1, the maximum value or the central position of the maximum value is obtained from the upper address and the lower address of the memory unit 14 from the memory unit 14 as in the first embodiment, and the detector is detected. The attachment position of 3 can be specified.

Further, in the second embodiment and the modification of the second embodiment, the detector output is as data in the upper and lower two-dimensional address spaces as shown in FIG. Although obtained, a two-dimensional filter may be applied to the detector output as shown in FIGS.
Then, after performing the two-dimensional filtering process, the process relating to the detector position detection may be performed.

<Third Embodiment> In this embodiment, the brightness (density) and chromaticity of the color system displayed on the monitor 1 are measured by a detector, and the rough detector mounting position on the monitor 1 is determined. This is an example to know.

As an example of the color system displayed, for example,
There is an RG color system shown in FIG. In this RG color system, the R (red) and G (green) data correspond to the position coordinates. Therefore, from this correspondence relationship, R (red) and G (green) obtained by the colorimetric measurement of the detector 3 are performed. ) You can get the monitor coordinates corresponding to the data,
Therefore, the mounting position of the detector 3 on the monitor tube surface can be known.

Similarly, as shown in FIG. 6 (B), the coordinate axes thereof are different by 120 ° in phase, and R + G + B = 255.
And the RGB color system such that xyz shown in FIG.
Also in the color system or the Munsell color system shown in FIG. 6D, a part of the color system, for example, a part indicated by a solid line in the figure, is displayed on the monitor surface 2.
It is possible to know the detector mounting position on the surface of the monitor tube based on the data obtained by projecting and displaying on the screen and measuring the color by the detector 3.

The color system displayed is not limited to the color system described above, and any data can be used as long as the data obtained by the detector and the position coordinates of the monitor screen are in correspondence.

The brightness of the monitor, that is, the light emission intensity varies depending on the brightness adjustment by the manufacturer and the brightness adjustment knob. Therefore, by displaying the entire black, the entire white, etc. on the monitor before the position detection, measuring the dynamic range by the detector, and normalizing so that the data of black = 0, white = 255 can be obtained, and more accurate The detector position can be detected. However, since the detector mounting position is detected for calibrating the monitor, the position is detected without calibration, and when the detector has a wide opening, an average value corresponding to the opening is detected. Therefore, the accuracy is better in the first and second embodiments, but the detector position can be easily detected without providing a special auxiliary circuit.

<Fourth Embodiment> This embodiment is an example in which a horizontal or vertical gradation is displayed on the surface of a monitor tube and the horizontal or vertical position can be known from the measured value of the detector 3. is there.

When horizontal gradation is displayed as shown in FIG. 7A, the horizontal position can be detected from the measured value of the detector 3. FIG.
As shown in (b), when the gradation in the vertical direction is displayed, the position in the vertical direction can be detected by the measurement value of the detector 3.

As a supplementary explanation, assuming that the measured value in the horizontal gradation is R = _RD and the number of horizontal pixels of the monitor is H _N , the horizontal position P _{H where the} detector 3 is attached is

[0038]

## EQU1 ## It can be expressed as P _H = H _N × R _D / 255.

Although this example is an example of gray gradation, the same result can be obtained by detecting black and white data.

<Fifth Embodiment> This embodiment is the second embodiment.
This is an example in which the detector position detection accuracy can be improved as compared with the above embodiment. In the second embodiment, the peak value of the A / D converted value of the detector output stored in the memory unit 14 is obtained, and the position of the detector 3 is determined from that position. On the other hand, in the present embodiment, the mounting position of the detector 3 is determined after performing the following processing on the value stored in the memory unit 14. That is, the procedure will be described. Procedure 1) Similar to the second embodiment, the position of the highest output of the detector is obtained. Step 2) From several lines before and after the vertical position obtained in step 1, the detector output of several tens of lines becomes as shown in the upper part of FIG. 8. The detector measurement value is inspected for each line, and the peak position in the horizontal direction is checked. Find out.

Procedure 3) The average value of the peak position of each horizontal line obtained in Procedure 2 is calculated, and the obtained value is monitored 1
An accurate mounting position of the upper horizontal detector 3 is set.

Procedure 4) Detector outputs of several lines to several tens of lines before and after the vertical position obtained in Procedure 1 are as shown on the left side of FIG. 8, and for each line, the detector measurement value of each line is shown. The sum is calculated as an integrated value, the peak position of the integrated value in the vertical direction is determined, and the obtained peak position is set as the precise mounting position of the detector 3 in the vertical direction on the monitor.

Step 5) The horizontal and vertical positions obtained in Steps 3 and 4 are the precise positions of the attached detector.

In the horizontal direction, the final position of the detector position is determined based on the peak positions of several lines, and in the vertical direction, the final position of the detector position is determined based on the integrated value of the horizontal lines. Thus, even if noise or the like is picked up, it is almost unaffected by the noise and the mounting position of the detector 3 can be specified.

[0045]

As described above, according to the present invention,
With the above-described configuration, it is possible to detect the mounting position and measure the luminance, chromaticity, etc. on the display surface, regardless of the position of the detector mounted on the display surface.

Also when calibrating the characteristics of the display device, the necessary brightness data and color data are displayed only on the part to which the detector is attached, and the information necessary for the operation is displayed on the remaining part and the window is displayed. It became possible to open them and proceed with other work at the same time.

Further, it has become possible to turn off the display other than the detector and block the light that extraneously goes around the sensor to prevent an adverse effect.

Further, the detector is provided over the entire display surface,
Even when calibrating the uniformity of the display device while appropriately replacing several places, the operator does not have to be so careful and just sets it at several suitable places, and after detecting the detector position on the CPU side, The colorimetric information is calibrated at the required position by interpolating the colorimetric information at the required position based on the colorimetric information and brightness information at the position where the detector is set, and calibrating the uniformity of the display device. It can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining an example of scanning in the first embodiment.

FIG. 3 is a flowchart showing an example of a detector position detection program stored in a ROM 7a shown in FIG.

FIG. 4 is a block diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing an example of data in upper and lower two-dimensional address spaces and an example of a two-dimensional filter.

FIG. 6 is a diagram showing an example of a color system.

FIG. 7 is a diagram showing an example of gradation.

FIG. 8 is an explanatory diagram for explaining a fifth embodiment of the present invention.

[Explanation of symbols]

 1 Monitor 2 Monitor Surface 3 Detector 4 Controller 5 Readout Circuit 6 Video Memory 7 CPU 7a ROM 7b RAM 11 A / D Converter 12, 13 Counter 14 Memory Unit

Claims (10)

[Claims] 1. A light emitting means for emitting light from a small area at a predetermined position on a display surface of a display device, a scanning means for scanning the small area emitted by the light emitting means, and a detector attached to the small area. A detector for measuring the luminance and chromaticity of each scanning position by the scanning means, and obtaining the maximum measurement value from the measurement values obtained by the detector, and the position of the detector with respect to the small area from the maximum measurement value. A detector position detecting system comprising: 2. A detector mounted on the display surface of the display device for measuring luminance and chromaticity, and a light emitting means for emitting light in a predetermined range of the display surface of the display device including the detector mounting surface. Scanning means for performing point scanning on the region of the predetermined range emitted by the light emitting means, position coordinates of the display surface, storage means for storing a measurement value by the detector for the position, and storage means for storing in the storage means. A detector position detecting system comprising: a take-out means for taking out a peak value or a maximum value from the measured value and taking out a position corresponding to the value. 3. The horizontal mounting position of the detector according to claim 2, wherein the horizontal mounting position of the detector is determined based on an average value or a weighted average value of peak values of a plurality of horizontal lines in the vicinity of a vertical position to be a candidate. For each horizontal line in the vicinity of the vertical position, calculate the total value of the measured values,
The detector position detecting system further comprising a determining means for determining the vertical mounting position of the detector based on the peak value of the total value. 4. A color system display means for displaying at least a part of a predetermined color system, and a display surface of the color system display means for coordinates of the color system displayed by the color system display means. A storage unit for storing a coordinate table, and a detector attached to the color system display unit,
A detector for detecting luminance and chromaticity, and a position in the color system is calculated from the luminance and chromaticity detected by the detector, and display surface coordinates are calculated from the obtained position based on the table of the storage means. A detector position detecting system comprising: a calculating unit. 5. A gradation display means for displaying a gradation, a detector for measuring a gradation displayed by the gradation display means, a measurement value measured by the detector, and a gradation direction displayed on the gradation display means. A detector position detection system, comprising: an attachment position calculation means for calculating the attachment position of the detector from the number of pixels. 6. A step of causing a small area at a predetermined position on a display surface of a display device to emit light, a step of performing point scanning on the emitted small area, and a measurement value obtained by a detector attached to the small area. From the maximum measured value obtained, and a step of finding the position of the detector with respect to the small area from the obtained maximum measured value. 7. A step of causing a predetermined range of the display surface of the display device including the detector mounting surface to emit light, a step of performing point scanning on the predetermined range of the emitted light, and the previously stored display. A detector position detecting method comprising: a step of extracting a peak value or a maximum value from position coordinates of a surface and a measurement value of the detector by the position; and a step of extracting a position corresponding to the obtained value. 8. The horizontal mounting position of the detector is determined according to an average value or a weighted average value of peak values of a plurality of horizontal lines in the vicinity of a vertical position as a candidate, and the candidate becomes the candidate. For each horizontal line in the vicinity of the vertical position, calculate the total value of the measured values,
The detector position detecting method further comprising the step of determining a vertical mounting position of the detector based on a peak value of the total value. 9. A step of displaying at least a part of a predetermined color system on a display device, a step of detecting luminance / chromaticity by a detector attached to the display device, and a step of detecting the luminance / chromaticity from the detected luminance / chromaticity. A method for detecting a detector position, the method comprising: obtaining a position in a color system and calculating display surface coordinates from the obtained position based on a table stored in a storage means. 10. A step of displaying a gradation on a display device, a step of measuring with a detector attached to the display device, a measurement value obtained by the measurement, and a mounting position of the detector based on the number of pixels in the displayed gradation direction. And a detector position detecting method.