CN108028918B - Image signal generating device and display measuring device - Google Patents
Image signal generating device and display measuring device Download PDFInfo
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- CN108028918B CN108028918B CN201680052588.2A CN201680052588A CN108028918B CN 108028918 B CN108028918 B CN 108028918B CN 201680052588 A CN201680052588 A CN 201680052588A CN 108028918 B CN108028918 B CN 108028918B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
Abstract
The object is to shorten the time required from the start of measurement of a plurality of images sequentially displayed in a display to the end of measurement of all the images. To achieve the object, an image signal generating apparatus includes: a display image signal generation unit that repeatedly generates a display image signal corresponding to an image while changing the content of the image displayed on the display so as to change the content of the image; an output interface for outputting the display image signal generated by the display image signal generating unit to a display; and a notification signal generation unit that generates a notification signal for notifying a change timing of the display image signal in response to the change timing being changed by the display image signal generation unit.
Description
Technical Field
The present invention relates to an image signal generating device that generates an image signal for measuring characteristics of a display, and a display measuring device including the image signal generating device.
Background
When the input of the luminance chromaticity value is received in step S1100, the computer 1000 instructs the image signal generation apparatus 1100 to output the 2 nd white balance adjustment image in step S1200. That is, in step S1000 and step S1200, the 1 st white balance adjustment image and the 2 nd white balance adjustment image having different luminance are displayed in time division. The 2 nd white balance adjustment image is a bright achromatic image in which the value of the luminance signal Y is increased to, for example, about 90% of the domain. Therefore, a bright gray image is mapped in the display 1200. When the 2 nd white balance adjustment image is output, the computer 1000 receives the input of the luminance and chromaticity values from the color analyzer 1300 in step S1300.
When the input of the luminance and chromaticity values is received in step S1300, the computer 1000 instructs the image signal generation apparatus 1100 to output the 3 rd white balance adjustment image in step S1400. The 3 rd white balance adjustment image is an achromatic image in which the value of the luminance signal Y is set to, for example, an intermediate luminance of about 50% of the domain. Therefore, a gray image is displayed on the display 1200. When the 3 rd white balance adjustment image is output, the computer 1000 receives the input of the luminance and chromaticity values from the color analyzer 1300 in step S1500. As described above, the computer 1000 can obtain the luminance and the chromaticity values corresponding to the 1 st to 3 rd white balance adjustment images having achromatic colors and different luminances.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-141587
Disclosure of Invention
However, in the method of patent document 1, since the computer instructs the image signal generation device to output the image for white balance adjustment after receiving the luminance and chromaticity values from the color analyzer, there is a problem that the respective steps are connected in time series, which takes time to adjust.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a technique capable of shortening the time required from the start of measurement of an image to the end of measurement of all images when a plurality of images are displayed in time sequence on a display and each image is measured.
In order to solve the above problem, the 1 st aspect provides an image signal generating apparatus comprising: a display image signal generation unit that repeatedly generates a display image signal corresponding to an image displayed on a display while changing the content of the image; an output interface for outputting the display image signal generated by the display image signal generating unit to the display; and a notification signal generation unit configured to generate a notification signal for notifying a change timing of the display image signal in response to the change timing being changed by the display image signal generation unit.
The 2 nd aspect provides a display measurement apparatus comprising: an image signal generating device according to claim 1; a photoelectric conversion element that receives light emitted from the display to which the display image signal is supplied and that displays an image corresponding to the display image signal, and converts the light into an electric signal; a photoelectric signal acquisition unit for acquiring an electric signal converted by the photoelectric conversion element; and a control section that detects the notification signal, and controls the photoelectric signal acquisition section in response to the notification signal so that the photoelectric signal acquisition section acquires the electric signal.
A display measuring apparatus according to claim 3 is the display measuring apparatus according to claim 2, wherein the control section controls the photoelectric signal acquiring section so that the photoelectric signal acquiring section acquires the electric signal when a preset time has elapsed since the notification signal was generated.
A display measurement apparatus according to claim 4 is the display measurement apparatus according to claim 2 or 3, wherein the display measurement apparatus includes a color analyzer independent of the image signal generation apparatus, the color analyzer includes the photoelectric signal acquisition unit and the control unit, the image signal generation apparatus further includes an output interface for outputting the notification signal to the outside, and the color analyzer further includes an input interface for inputting the notification signal output by the image signal generation apparatus.
According to the invention according to claim 1, in response to the timing of changing the display image signal, the notification signal generating section of the image signal generating device generates a notification signal for notifying the timing of the change. Therefore, in the case where the display measurement system includes, for example, the image signal generation device, the color analyzer, and a computer that controls them, when the image signal generation device generates a display image signal suitable for display on the display from the original image signal supplied from the computer and outputs the display image signal to the display, the computer does not need to output a notification signal to the color analyzer. I.e. without the need for a computer to control the measuring action of the color analyzer. This makes it possible to perform the process of generating the original image signal by the computer and the measurement on the display by the color analyzer in parallel, and thus it is possible to shorten the time required for the color analyzer to start the measurement of the images sequentially displayed on the display and to end the measurement of all the images.
According to the invention according to claim 2, since the control section controls the photoelectric signal acquiring section in response to the notification signal so that the photoelectric signal acquiring section acquires the electric signal, for example, in the case where the computer supplies an original image signal as a basis of the image signal for display to the image signal generating apparatus, the computer does not need to supply the notification signal. Therefore, the acquisition of the electric signal by the photoelectric signal acquisition unit and the generation of the original image signal by the computer can be performed in parallel. Therefore, it is possible to shorten the time required for the color analyzer to start measurement of images sequentially displayed by the display to end measurement of all images.
According to the invention based on claim 3, the control section controls the photoelectric signal acquiring section so that the photoelectric signal acquiring section acquires the electric signal when a predetermined time has elapsed since the notification signal was generated. Therefore, if the set time is set to a time at which the display characteristics of the liquid crystal of the display are stable, the measurement value of the characteristics of the display can be stabilized.
Drawings
Fig. 1 is a diagram for explaining a case where characteristics of a display are measured using a display measurement system including a display measurement device according to an embodiment.
Fig. 2 is a block diagram illustrating one example of the structure of the display measurement system of fig. 1.
Fig. 3 is a diagram showing an example of an operation timing of the display measurement system of fig. 1.
Fig. 4 is a diagram showing another example of the operation timing of the display measurement system of fig. 1.
Fig. 5 is a diagram for explaining an operation of the image signal generating apparatus of fig. 1 for generating the display image signal and the notification signal.
Fig. 6 is a diagram for explaining a case of measuring characteristics of a display using a display measuring system provided with a related-art display measuring device.
Fig. 7 is a block diagram showing the structure of the display measurement system of fig. 6.
Fig. 8 is a diagram showing an operation timing of the display measurement system of fig. 6.
Fig. 9 is a flowchart showing an operation flow of white balance adjustment performed using the display measurement system of fig. 6.
(symbol description)
500: a display measuring device; 700: a display measurement system; 100: a computer; 102: a system control unit; 104: an original image signal generating section; 110: an image signal generating device; 112: a display image signal generating unit; 114: an output interface; 116: a notification signal generation unit; 118: a notification signal output interface (output interface); 120: a display; 130: a color analyzer; 130A: an optical sensor section; 130B: a measuring device main body; 132: a photoelectric conversion element; 134: a photoelectric signal acquisition section; 136: a notification signal input interface (input interface); 138: a control unit; g 1: an original image signal; g 2: a display image signal; s 1: a notification signal.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings. The following embodiments are merely examples embodying the present invention, and do not limit the technical scope of the present invention. In the drawings, the same reference numerals are given to portions having the same configuration and function, and redundant description is omitted in the following description.
< Structure of display measuring apparatus according to embodiment >
Fig. 1 is a diagram for explaining a case where characteristics of a display 120 are measured using a display measurement system 700 including a display measurement device 500 according to an embodiment. Fig. 2 is a block diagram showing one example of the structure of a display measurement system 700.
The display measurement system 700 is configured as a computer 100 including a display measurement device 500 and a comprehensive control display measurement device 500. The display measuring apparatus 500 includes an image signal generating device 110 and a color analyzer 130. The image signal generation device 110 and the color analyzer 130 are independent devices. The image signal generating device 110 and the color analyzer 130 may be integrally formed.
The display measurement system 700 measures the display content of the display 120 as the measurement object by using the color analyzer ("measurer") 130 while changing the display content using the system control computer 100 and the image signal generating device ("pattern generator") 110. Thereby, the characteristics of the display 120 are evaluated. The display measurement system 700 performs adjustment of the white balance of the display 120, for example, based on the measurement result.
The computer 100 includes a system control unit 102 that controls the display measurement system 700, and an original image signal generation unit 104 that generates an original image signal g1 used for white balance adjustment, for example. The computer 100 further includes an output unit (not shown) that outputs the original image signal g1 generated by the original image signal generation unit 104, and an image signal generation device 110 that supplies the original image signal g1 to the display measurement device 500. The output unit is constituted by, for example, an HDMI (registered trademark) output port. For example, the original image signal generating unit 104 is realized by a CPU of the computer 100 executing a predetermined program to generate each pixel value of each image based on definition information of each image and store the pixel value in an image memory or the like.
The image signal generating apparatus 110 includes an input unit (not shown) for inputting an original image signal g1 output from the computer 100, a display image signal generating unit 112, an output interface 114, and a notification signal generating unit 116. The input unit is constituted by, for example, an HDMI input port (not shown).
The display image signal generation unit 112 repeatedly generates the display image signal g2 while changing the display image signal g2 corresponding to the image so that the content of the image displayed on the display ("display panel") 120 changes over time. The display image signal generation unit 112 includes, for example: a memory for temporarily storing the original image signal g1 input to the input unit; a signal shaping unit (not shown) for shaping the original image signal g1 stored in the memory into a display image signal g2 corresponding to the display size of the display 120; and image memories M1 and M2 (fig. 5) for alternately storing the repeatedly generated display image signal g 2. The signal shaping unit extracts (extracts) an image-corresponding signal corresponding to the display size of the display 120 from the original image signal g1, and generates a display image signal g 2. For example, the signal shaping unit is realized by the CPU of the image signal generation device 110 executing a predetermined program for extracting an image. The operations of the signal shaping unit and the notification signal generation unit 116 will be described in detail later.
The output interface 114 outputs the display image signal g2 generated by the display image signal generation unit 112. The output display image signal g2 is input to the display 120 as an inspection target. The display 120 maps a white balance adjustment image corresponding to the display image signal g 2. The output interface 114 is constituted by, for example, an output terminal in accordance with a predetermined standard.
In response to the display image signal generator 112 changing the timing of changing the display image signal g2, the notification signal generator 116 generates a notification signal s1 for notifying the changed timing. The notification signal generator 116 detects that the display image signals g2 stored in the image memories M1 and M2 are different from each other, and generates a notification signal s 1. The notification signal s1 is, for example, a signal having 1 pulse. The notification signal s1 is a trigger signal for the color analyzer 130 to start measurement of the image displayed on the display 120. For example, the notification signal generation unit 116 is realized by a CPU mounted in the comparison circuit and the notification signal generation unit 116 executing a predetermined program.
The image signal generation device 110 further includes a notification signal output interface (also referred to as an "output interface") 118 that outputs a notification signal s1 to the outside. The notification signal output interface 118 is constituted by an output port, for example. The notification signal s1 output from the notification signal output interface 118 is input to the notification signal input interface 136 of the color analyzer 130.
The color analyzer 130 includes an optical sensor unit 130A and a measuring device main body 130B. The optical sensor unit 130A includes a photoelectric conversion element 132, and the measuring apparatus main body 130B includes a photoelectric signal acquisition unit 134, a notification signal input interface (also referred to as an "input interface") 136, and a control unit 138.
The photoelectric conversion element 132 receives light emitted from the display 120 for displaying an image corresponding to the display image signal g2, and converts the light into an electric signal e 1. The photoelectric signal acquisition unit 134 acquires the electric signal e1 converted by the photoelectric conversion element 132. The photoelectric conversion element 132 is configured by, for example, 3 photoelectric cells that receive light passing through each filter of the tristimulus values XYZ. The control section 138 detects the notification signal s1, and controls the photoelectric signal acquiring section 134 in response to the notification signal s1 so that the photoelectric signal acquiring section 134 acquires the electric signal e 1. In this control, the control section 138 controls the photoelectric signal acquiring section 134 such that the photoelectric signal acquiring section 134 acquires the electric signal e1 when a predetermined time has elapsed since the generation of the notification signal s 1. For example, the CPU of the color analyzer 130 executes a predetermined program to realize the photoelectric signal acquisition unit 134 and the control unit 138, respectively.
The notification signal input interface 136 inputs the notification signal s1 output by the image signal generation device 110. The notification signal input interface 136 is constituted by an input port or the like, for example.
The color analyzer 130 further has: a calculation unit (not shown) for calculating luminance and chromaticity values from the electrical signal e1 acquired by the photoelectric signal acquisition unit 134; a storage unit (not shown) such as a memory for storing the luminance and chromaticity values calculated by the calculation unit. When the system control unit 102 of the computer 100 sends an output command for outputting the measurement value to the control unit 138 of the color analyzer 130, the control unit 138 of the color analyzer 130 outputs the luminance and chromaticity values stored in the storage unit to the computer 100.
Next, the signal shaping section and the notification signal generating section 116 of the image signal generating device 110 will be described in detail. Fig. 5 is a diagram for explaining an operation of the image signal generation device 110 for generating the display image signal g2 and the notification signal s 1. The computer 100 recognizes the image signal generation device 110 as the second monitor, and outputs the original image signal g1 generated by the original image signal generation unit 104 to the image signal generation device 110 in accordance with the HDMI standard.
The image signal generator 110 extracts the original image signal g1 input to the input unit of the signal shaping unit for each display size of the display 120, and generates the display image signal g 2. The original image signal g1 is shaped to generate a display image signal g 2. The image signal generator 110 stores the display image signal g2 generated by the display image signal generator 112 in the image memory M1. The original image signal g1 is generated by, for example, the NTSC method, and the subsequent original image signal g1 is input at a timing synchronized with 60 Hz.
The display image signal generation unit 112 of the image signal generation device 110 extracts the newly input original image signal g1 for each display size of the display 120 by the signal shaping unit to generate a new display image signal g2, and stores the new display image signal g2 in the image memory M2. On the other hand, the output interface 114 also alternately outputs the display image signal g2 from the image memories M1 and M2 to the display 120 at a timing synchronized with 60 Hz.
After the output interface 114 outputs the display image signal g2 from the image memory M1 to the display 120, the signal shaping unit extracts the original image signal g1, which is input next, in the display size of the display 120, and stores the extracted original image signal g 3526 as a new display image signal g2 in the image memory M1. After the output interface 114 outputs the display image signal g2 from the image memory M2 to the display 120, the signal shaping unit extracts the original image signal g1 input next for the display size of the display 120 and stores the extracted original image signal g2 as a new display image signal g2 in the image memory M2.
That is, the signal shaping unit always alternately stores the display image signal g2 in the image memory M1 and the image memory M2, and the output interface 114 always alternately outputs the shaped display image signal g2 from the image memory M1 and the image memory M2 to the display 120. The reason why 2 image memories are provided and the image memories are alternately stored and output at all times is to avoid a trouble that the images are disordered due to simultaneous access to the same area by writing during reading.
The notification signal generator 116 always monitors the display image signal g2 stored in the image memory M1 and the image memory M2. Specifically, the RGB values of the pixels p1 and q1 of the 1 st pixel in each image memory in the image signal g2 for display stored in the image memory M1 and the image memory M2 are always compared, and if there is a change in the RGB values between the pixels p1 and q1, the notification signal s1 is generated. For example, when the 1 st pixel of the display image signal g2 stored in the image memory M1 is RGB (255, 255, 255), the notification signal s1 is not generated when the 1 st pixel of the image memory M2 stores the image signal of RGB (255, 255, 255), and the notification signal s1 is generated when the display image signal g2 of RGB (120, 120, 120) is stored. In the present embodiment, the change in the brightness and color of the image corresponding to the display image signal g2 is detected by the change in the RGB values of the 1 st pixel in the image memories M1 and M2, but the method of detection is not limited to that of the present embodiment, and may be any method as long as it can detect the change in the brightness and color of the image corresponding to the display image signal g2 at a timing immediately before the display image signal g2 is output to the display 120.
< measurement flow of display measurement device according to embodiment >
Fig. 3 is a diagram showing an example of the operation timing of the display measurement system 700. When the measurement on the display 120 is started by the display measurement system 700, the computer 100 first generates (act a) the 1 st original image signal g1 and outputs an original image signal g 1. This period takes several tens of ms of time t 1. Time t1 is, for example, 45 ms.
Next, the signal shaping unit of the display image signal generation unit 112 of the image signal generation device 110 extracts the input 1 st original image signal g1 for the display size of the display 120 to generate the 1 st display image signal g 2. The display image signal generator 112 generates the display image signal g2, temporarily stores the signal in the image memory M1 (action B), and outputs the signal to the display 120 through the output interface 114. This period further requires time t2 of several tens ms. The time t2 is, for example, 35 ms.
Next, the 1 st display image signal g2 is input to the display 120 to be inspected, and an image corresponding to the 1 st display image signal g2 is mapped (action D) on the display 120. The display 120 is made of liquid crystal, and takes a time t3 of several tens of ms until the luminance and chromaticity of the mapped image are stabilized due to its characteristics. Time t3 is, for example, 70 ms.
On the other hand, the notification signal generator 116 constantly monitors the display image signal g2 stored in the image memories M1 and M2, and outputs the notification signal s1 (the top of the oblique inverted triangle indicates the output timing of the notification signal s 1) if the RGB value of the 1 st pixel of the 1 st display image signal g2 stored in the image memory M1 is different from the RGB value of the 1 st pixel of the display image signal g2 stored in the image memory M2. Further, the image signals of RGB (0, 0, 0) are stored as initial values in the image memory M1 and the image memory M2. Then, the notification signal s1 output from the notification signal output interface 118 is input to the notification signal input interface 136 of the color analyzer 130.
When the notification signal s1 is input to the notification signal input interface 136, the control unit 138 of the color analyzer 130 causes the photoelectric signal acquiring unit 134 to acquire (act E) the electric signal E1 converted by the photoelectric conversion element 132 at a predetermined timing (for example, a timing immediately after the elapse of the time t3 required for stabilizing the liquid crystal) after the above-described liquid crystal stabilization waiting (act C) is performed. For example, after the controller 138 of the color analyzer 130 detects the notification signal s1, the controller 138 acquires the electrical signal e1 from the photoelectric conversion element 132 using the elapse of the timer waiting time t3, and performs the acquisition operation.
The control unit 138 obtains the luminance and chromaticity values of the image displayed on the display 120 by performing a predetermined operation on the electric signal e1 obtained by the photoelectric signal obtaining unit 134. The control unit 138 stores the acquired luminance and chrominance values in a memory for storage.
On the other hand, after the 1 st original image signal g1 is output, the system control unit 102 of the computer starts generating the 2 nd original image signal g1 after a predetermined time has elapsed (act a). That is, the system control unit 102 switches the original image signal g 1. At a time in the process, the timing is within a time t3 during which the liquid crystal is stably waiting (the tip of the clipped inverted triangle indicates the timing of switching of the original image signal g 1).
From the viewpoint of obtaining a highly reliable measurement value, the steady standby of the liquid crystal (operation C) and the acquisition of the electric signal E1 (operation E) cannot be performed in parallel and are both necessary operations. Therefore, in the display measurement system 700, it is preferable that the computer 100 switches the original image signal g1 so that the operations C and E can be alternately and continuously performed without leaving time as shown in fig. 3. This can minimize the time required for measuring a plurality of images displayed on the display 120 in time series. In addition, in order to perform stable measurement, a certain time may be provided between the operation C and the operation E.
After the measurement of each image corresponding to each display image signal g2 is completed, the system control unit 102 of the computer 100 sends a measurement value output command to the control unit 138 of the color analyzer 130, and the control unit 138 outputs the luminance and chromaticity values stored in the storage unit to the computer 100.
Further, the color analyzer 130 may return a signal indicating that the measurement is completed to the system control unit 102 of the computer 100 every time the measurement of each image corresponding to each display image signal g2 is completed, and may sequentially output the luminance and chromaticity values to the computer 100 in time. Fig. 4 shows this operation sequence.
Fig. 4 is a diagram showing another example of the operation timing of the display measurement system 700. In the operation sequence shown in fig. 3, in the display measurement system 700, after the color analyzer 130 finishes measuring a plurality of images sequentially displayed in time on the display 120 for adjustment, the computer 100 acquires all measurement results from the color analyzer 130. In contrast, in the operation sequence shown in fig. 4, after the measurement operation E of 1 image by the color analyzer 130 is completed, the transfer operation F of the measurement result is performed at time t4 before the computer 100 starts the operation a of generating the next original image signal g 1. Thus, the computer 100 can output each of the original image signals g1 to the image signal generating device 110 at the same time interval as the operation sequence shown in fig. 3, and the color analyzer 130 can perform measurement on the display 120.
In the monitor measurement system 700, the computer 100 includes the original image signal generation unit 104 that generates the original image signal g1, but for example, the image signal generation device 110 may include the original image signal generation unit 104, and the system control unit 102 of the computer 100 may transmit a command to generate the original image signal g1 to the image signal generation device 110.
In the above description of the display measurement system 700, the white balance adjustment has been exemplified, but the adjustment of individual colors may be performed by displaying the individual monochromatic images R, G, B on the display.
In addition, when the color analyzer 130 has a flicker measurement function, the method of the present embodiment may be used for flicker inspection. In the case of the flicker inspection, for example, a plurality of images in a shape of a thousand-bird grid are sequentially displayed in time on the display 120, the grid of each image is measured by the optical sensor unit 130A, and flicker is measured from temporal variations in the measured value of luminance obtained by the measuring apparatus main body 130B. Therefore, the notification signal generator 116 of the image signal generator 110 can generate the notification signal s1 by comparing the signal values of the pixels at the same address except the cell portion with each other in the display image signal g2 stored in the image memories M1 and M2.
< difference from the prior art >
The difference between the display measurement system 700 (display measurement apparatus 500) according to the embodiment and the display measurement system 1700 (display measurement apparatus 1500) according to the related art will be described.
Fig. 7 is a block diagram showing the structure of a display measurement system 1700 of the related art. Fig. 8 is a diagram showing an operation timing of the display measurement system 1700.
As shown in fig. 2, in the display measuring system 700, the image signal generating apparatus 110 includes a notification signal generating section 116 that generates a notification signal s1, and a notification signal output interface 118 that outputs a notification signal s 1. Thus, in the display measurement system 700, the image signal generation device 110 supplies the notification signal s1, which is a trigger signal for causing the color analyzer 130 to start measurement, to the color analyzer 130 via the notification signal input interface 136.
In contrast, as shown in fig. 7, in the display measurement system 1700, the image signal generation device 1100 does not have a configuration corresponding to the notification signal generation unit 116 and the notification signal output interface 118. In the display measurement system 1700, the system control section 1002 of the computer 1000 supplies a measurement command s2 for causing the color analyzer 1300 to start measurement to the color analyzer 1300 via the command input interface 1306.
As described above, in the conventional display measurement system 1700, the computer 1000 performs both the control of the measurement operation of the color analyzer 1300 (the operation of the color analyzer 1300 for acquiring the luminance and chromaticity values of the display 120) and the generation and output (switching) of the original image signal g 1. Therefore, the computer 1000 cannot generate and output the original image signal g1 at an arbitrary timing. Therefore, as shown in fig. 8, the computer 1000 switches the original image signal g1 after the measurement by the color analyzer 1300 is completed.
However, in the display measurement system 700 according to the embodiment, the computer 100 does not control the operation of acquiring the luminance and chromaticity values of the display 120 by the color analyzer 130. Thus, in the display measurement system 700, the computer 100 can generate and output the original image signal g1 for white balance adjustment at an arbitrary timing. Therefore, the display measurement system 700 generates and outputs the original image signal g1 at a timing earlier than that of the display measurement system 1700 of the related art, and can shorten the measurement interval of each image (the display interval between each image) displayed on the display 120 for adjustment. That is, the display measurement system 700 can achieve a reduction in the inspection time of the display 120 as compared with the display measurement system 1700.
According to the video signal generator 110 of the present embodiment configured as described above, in response to the timing of changing the display video signal g2, the notification signal generator 116 of the video signal generator 110 generates the notification signal s1 for notifying the changed timing. Therefore, in the case where the display measurement system 700 includes, for example, the image signal generation device 110, the color analyzer 130, and the computer 100 that controls them, when the image signal generation device 110 generates the display image signal g2 suitable for display on the display 120 from the original image signal g1 supplied from the computer 100 and outputs the display image signal g2 to the display 120, the computer 100 does not need to output the notification signal s1 to the color analyzer 130. That is, the computer 100 is not required to control the measurement operation of the color analyzer 130. Accordingly, the process of generating the original image signal g1 by the computer 100 and the measurement on the display 120 by the color analyzer 130 can be performed in parallel, and therefore, the time required from the start of measurement of the images sequentially displayed on the display 120 by the color analyzer 130 to the end of measurement of all the images can be shortened.
In the display measurement device 500 of the present embodiment configured as described above, the control unit 138 controls the photoelectric signal acquiring unit 134 in response to the notification signal s1 so that the photoelectric signal acquiring unit 134 acquires the electric signal e1, so that, for example, when the computer 100 supplies the original image signal g1, which is the basis of the display image signal g2, to the image signal generating device 110, the computer 100 does not need to supply the notification signal s 1. Therefore, the acquisition of the electrical signal e1 by the optoelectronic signal acquisition unit 134 and the generation of the original image signal g1 by the computer 100 can be performed in parallel. Therefore, it is possible to shorten the time required for the color analyzer 130 to start measurement of images sequentially displayed by the display 120 to end measurement of all images.
In the display measuring apparatus 500 of the present embodiment configured as described above, the controller 138 controls the photoelectric signal acquirer 134 such that the photoelectric signal acquirer 134 acquires the electric signal e1 when a predetermined time t3 elapses after the notification signal s1 is generated. Therefore, if the time t3 is set to a time at which the display characteristics of the liquid crystal of the display 120 are stable, the measured value of the characteristics of the display 120 can be stabilized.
While the invention has been described in detail, the foregoing description is in all aspects illustrative and not restrictive. Therefore, the present invention can be modified and omitted as appropriate within the scope of the present invention.
Claims (3)
1. A display measurement device is provided with: an image signal generating device, a photoelectric conversion element, a photoelectric signal acquiring unit, and a control unit,
the image signal generation device is provided with:
a display image signal generation unit that repeatedly generates a display image signal corresponding to an image displayed on a display while changing the content of the image;
an output interface for outputting the display image signal generated by the display image signal generating unit to the display; and
a notification signal generating section for generating a notification signal for notifying a change timing of the display image signal in response to the change timing being changed by the display image signal generating section,
the photoelectric conversion element receives light emitted from the display and converts the light into an electric signal from the display to which the display image signal is supplied and which displays an image corresponding to the display image signal,
the photoelectric signal acquisition unit acquires an electric signal converted by the photoelectric conversion element,
the control section detects the notification signal, and controls the photoelectric signal acquisition section in response to the notification signal so that the photoelectric signal acquisition section acquires the electric signal.
2. The display measurement apparatus of claim 1,
the control section controls the photoelectric signal acquisition section so that the photoelectric signal acquisition section acquires the electric signal when a preset time has elapsed since the notification signal was generated.
3. The display measuring apparatus according to claim 1 or 2,
the display measuring device is provided with a color analyzer independent of the image signal generating device,
the color analyzer is provided with the photoelectric signal acquisition part and the control part,
the image signal generating device is also provided with an output interface for outputting the notification signal to the outside,
the color analyzer is also provided with an input interface for inputting the notification signal output by the image signal generating device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015182495 | 2015-09-16 | ||
| JP2015-182495 | 2015-09-16 | ||
| PCT/JP2016/075881 WO2017047418A1 (en) | 2015-09-16 | 2016-09-02 | Image signal generating device and display measuring device |
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| CN108028918B true CN108028918B (en) | 2020-05-22 |
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| JP (1) | JP6848870B2 (en) |
| CN (1) | CN108028918B (en) |
| TW (1) | TWI656798B (en) |
| WO (1) | WO2017047418A1 (en) |
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| JPH09182115A (en) * | 1995-12-27 | 1997-07-11 | Minolta Co Ltd | Crt inspection device |
| CN1258174A (en) * | 1998-12-22 | 2000-06-28 | 马来西亚明碁电脑有限公司 | Color test system for display device |
| CN101026777A (en) * | 2006-02-21 | 2007-08-29 | 台湾薄膜电晶体液晶显示器产业协会 | Display device dynamic image colour excursion detecting system and detecting method |
| EP2429201A2 (en) * | 2010-09-08 | 2012-03-14 | Samsung Electronics Co., Ltd. | Display apparatus and method of controlling the same, shutter glasses and method of controlling the same, and display system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11184445A (en) * | 1997-12-24 | 1999-07-09 | Hitachi Ltd | Display image image picking method for display device and image displaying performance inspecting method and device therefor |
| JP4669854B2 (en) * | 2007-03-30 | 2011-04-13 | Ｎｅｃディスプレイソリューションズ株式会社 | Video processor and video delay measuring method |
| AU2012309705B2 (en) * | 2011-09-15 | 2015-12-10 | Eizo Corporation | Measurement method, computer program, and measurement system |
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- 2016-09-02 WO PCT/JP2016/075881 patent/WO2017047418A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09182115A (en) * | 1995-12-27 | 1997-07-11 | Minolta Co Ltd | Crt inspection device |
| CN1258174A (en) * | 1998-12-22 | 2000-06-28 | 马来西亚明碁电脑有限公司 | Color test system for display device |
| CN101026777A (en) * | 2006-02-21 | 2007-08-29 | 台湾薄膜电晶体液晶显示器产业协会 | Display device dynamic image colour excursion detecting system and detecting method |
| EP2429201A2 (en) * | 2010-09-08 | 2012-03-14 | Samsung Electronics Co., Ltd. | Display apparatus and method of controlling the same, shutter glasses and method of controlling the same, and display system |
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| TW201724850A (en) | 2017-07-01 |
| CN108028918A (en) | 2018-05-11 |
| TWI656798B (en) | 2019-04-11 |
| WO2017047418A1 (en) | 2017-03-23 |
| JPWO2017047418A1 (en) | 2018-07-05 |
| JP6848870B2 (en) | 2021-03-24 |
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