TW201724850A - Image signal generator and display measuring apparatus - Google Patents

Abstract

The objective of the present invention is to reduce the time required from the start of measurement of a plurality of images displayed successively on a display until completion of the measurement of all the images. In order to achieve this objective, this image signal generating device is provided with: a display image signal generating unit which repeatedly generates a display image signal corresponding to an image, while varying the display image signal in such a way that the content of the image displayed on the display varies over time; an output interface for outputting to the display the display image signal generated by the display image signal generating unit; and a notification signal generating unit which, in response to the variation timing with which the display image signal generating unit varies the display image signal, generates a notification signal for providing a notification of the variation timing.

Description

Image signal generating device and display measuring device

The present invention relates to a video signal generating device that generates a video signal for measuring characteristics of a display, and a display measuring device including the video signal generating device.

Patent Document 1 discloses a display measurement system 1700 that adjusts the white balance of the display 1200 in accordance with the operation sequence shown in FIG. 9 by using the display measurement device 1500 shown in FIG. In other words, in step S1000, the computer 1000 instructs the video signal generating device (also referred to as "video signal generator" and "pattern generator") 1100 to output the first white balance adjusting video. Thereby, the video signal generation device 1100 outputs the first white balance adjustment video to the display 1200. For the first white balance adjustment image, for example, in the constituent signal, the luminance signal Y value is suppressed to, for example, a dark colorless image of about 10% of the entire range. Next, display 1200 also displays a dark gray image. As described above, when the first white balance adjustment image is output, the computer 1000 receives the luminance/chrominance value input from the color analyzer 1300 in step S1100. E.g, In the present embodiment, the luminance/chroma values are represented by Lv, x, and y values.

After receiving the input of the luminance/chroma value in step S1100, the computer 1000 instructs the video signal generating device 1100 to output the second white balance adjustment video in step S1200. In other words, in step S1000 and step S1200, the first white balance adjustment image and the second white balance adjustment image having the difference in luminance are displayed in a time division manner. The second white balance adjustment image raises the luminance signal Y value to, for example, a bright uncolored image of about 90% of the full range. Display 1200 then also displays a bright gray image. After the image for the second white balance adjustment is output, the computer 1000 receives the luminance/chrominance value input from the color analyzer 1300 in step S1300.

After receiving the input of the luminance/chroma value in step S1300, the computer 1000 instructs the video signal generating device 1100 to output the third white balance adjustment video in step S1400. The third white balance adjustment image increases the luminance signal Y value to, for example, an intermediate luminance non-color image of about 50% of the full range. Next, the display 1200 also displays a gray image. After outputting the third white balance adjustment image, the computer 1000 receives the luminance/chrominance value input from the color analyzer 1300 in step S1500. According to the above aspect, the computer 1000 can obtain the luminance/chrominance values of the first to third white balance adjustment images corresponding to the uncolored and different luminances.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] JP 2008-141587 A

However, in the method of Patent Document 1, after receiving the luminance/chrominance value from the color analyzer, the computer instructs the image signal generating device to output the image for white balance adjustment, so that each step depends on the timing. There will be problems with time spent on adjustments.

The present invention has been made to solve such a problem, and an object thereof is to provide a technique for reducing the time required from the start of image measurement to the end of all image measurement when the display sequentially displays a plurality of images in sequence and measures each image.

In order to solve the problem, the video signal generating apparatus according to the first aspect includes a display video signal generating unit that changes and displays the video signal for display corresponding to the video image in order to change the video content displayed on the display. And outputting the display video signal generated by the display video signal generating unit to an output interface of the display, and in response to the display video signal generating unit changing a change timing of the display video signal, generating and notifying A notification signal generation unit that changes the timing notification signal.

The display measuring device according to the second aspect includes: a video signal generating device according to the first aspect; and the display device that receives the display video signal and displays the video corresponding to the display video signal a photoelectric conversion element that converts the light emitted by the indicator to an electrical signal, an optical signal acquisition unit that acquires an electrical signal converted by the photoelectric conversion element, detects the notification signal, and controls the photoelectric signal in response to the notification signal The acquisition unit causes the photoelectric signal acquisition unit to acquire the control unit of the electrical signal.

The display measurement device according to the third aspect is the display measurement device according to the second aspect, wherein the control unit controls the photoelectric signal acquisition unit to cause the photoelectric signal acquisition unit to acquire the aforementioned image when the predetermined time has elapsed after the notification signal is generated. electric signal.

The display measuring device according to the fourth aspect is the display measuring device according to the second or third aspect, comprising: a color analyzer independent of the video signal generating device; the color analyzer includes: the photoelectric signal acquiring unit and The video signal generating device further includes: a notification signal 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 video signal generating device.

According to the invention related to the first aspect, in response to the change timing of the display video signal, the notification signal generation unit that generates the video signal generation device notifies the notification signal of the change timing. Next, the display measurement system includes, for example, the video signal generation device, the color analyzer, and the computer that controls the display, and the video signal generation device generates a display suitable for the display of the display based on the original video signal supplied from the computer. Image letter When the number is output to the monitor, the computer does not need to output a notification signal to the color analyzer. In other words, the computer does not need to control the measurement action of the color analyzer. Therefore, since the original image signal generation processing by the parallel computer and the display measurement by the color analyzer can be shortened, it is possible to shorten the time required for the display to sequentially display the image to be measured after the color analyzer starts and until all the image measurement ends. .

According to the invention related to the second aspect, the control photoelectric signal acquisition unit causes the photoelectric signal acquisition unit to acquire an electrical signal, for example, when the computer supplies the original video signal to be the source of the display video signal to the video signal. When the device is generated, the computer does not need to supply a notification signal. Therefore, the acquisition of the electric signal by the parallel photoelectric signal acquisition unit and the generation of the original video signal by the computer can be performed. Thereby, it is possible to shorten the time required for the display to sequentially display the image after the start of the color analyzer until the end of all the image measurement.

According to the invention related to the third aspect, when a predetermined time elapses after the generation of the notification signal, the control unit controls the photoelectric signal acquisition unit to cause the photoelectric signal acquisition unit to acquire the electrical signal. Therefore, when the set time is set to the time when the liquid crystal display characteristic of the display is stabilized, the measured value of the characteristic of the display can be stabilized.

500‧‧‧Display measuring device

700‧‧‧Display Measurement System

100‧‧‧ computer

102‧‧‧System Control Department

104‧‧‧ Original image signal generation unit

110‧‧‧Image signal generating device

112‧‧‧Display image signal generation unit

114‧‧‧Output interface

116‧‧‧Notification signal generation unit

118‧‧‧Notification signal output interface (output interface)

120‧‧‧ display

130‧‧‧Color Analyzer

130A‧‧‧Optical Sensing Department

130B‧‧‧Measurement device body

132‧‧‧ photoelectric conversion components

134‧‧‧Photoelectric Signal Acquisition Department

136‧‧‧Notification signal input interface (input interface)

138‧‧‧Control Department

G1‧‧‧ original image signal

G2‧‧‧display image signal

S1‧‧‧Notice signal

FIG. 1 is a view showing a state in which the characteristics of the display are measured by using a display measurement system including the display measurement device according to the embodiment. Figure.

FIG. 2 is a block diagram showing an example of a configuration of the display measurement system of FIG. 1. FIG.

FIG. 3 is a view showing an example of an operation sequence of the display measurement system of FIG. 1. FIG.

Fig. 4 is a view showing another example of the operational sequence of the display measurement system of Fig. 1;

FIG. 5 is a view for explaining an operation of generating a display video signal and a notification signal by the video signal generating device of FIG. 1. FIG.

Fig. 6 is a view for explaining a state in which characteristics of a display are measured by a display measurement system including a display measurement device according to the prior art.

Fig. 7 is a block diagram showing the configuration of the display measurement system of Fig. 6.

Fig. 8 is a view showing an operational sequence of the display measurement system of Fig. 6;

Fig. 9 is a flow chart showing an operational sequence of white balance adjustment by the display measurement system of Fig. 6.

Hereinafter, embodiments will be described with reference to the drawings. The following embodiments are examples in which the present invention is embodied, and are not intended to limit the scope of the technical scope of the present invention. In the drawings, the same reference numerals are given to the parts having the same configurations and functions, and the repeated description is omitted in the following description.

<Configuration of Display Measuring Device According to Embodiment>

FIG. 1 is a view for explaining a state in which the characteristics of the display 120 are measured by the display measurement system 700 including the display measurement device 500 according to the embodiment. FIG. 2 is a block diagram showing an example of the configuration of the display measurement system 700.

The display measurement system 700 includes a display measurement device 500 and a computer 100 that integrates and controls the display measurement device 500. The display measurement device 500 includes a video signal generation device 110 and a color analyzer 130. The image signal generating device 110 and the color analyzer 130 are independent machines. The image signal generating device 110 and the color analyzer 130 may also be integrally formed.

The display measurement system 700 uses the computer 100 for system control and the video signal generating device ("pattern generator") 110 to change the display content of the display 120, which is the object to be measured, and the color analyzer ("measuring device") 130 measures the content. Display content. Thereby, the characteristics of the display 120 are evaluated. The display measurement system 700 performs, for example, white balance adjustment of the display 120 based on the measurement result.

The computer 100 includes a system control unit 102 that controls the display measurement system 700, and for example, generates an original video signal generation unit 104 that generates an original video signal g1 used for white balance adjustment. The computer 100 further includes an output unit (not shown) that outputs the original video signal g1 generated by the original video signal generating unit 104, and supplies the original video signal g1 to the video signal generating device 110 of the display measuring device 500. This output unit is configured by, for example, an HDMI (registered trademark) output terminal. The original video signal generating unit 104 executes a predetermined procedure by, for example, the CPU of the computer 100. In the formula, each pixel value of each image is generated based on the definition information of each image, and is stored in the image memory or the like.

The video signal generating device 110 includes an input unit (not shown) that inputs the original video signal g1 output from the computer 100, a display video signal generating unit 112, an output interface 114, and a notification signal generating unit 116. This input unit is configured by, for example, an HDMI input terminal (not shown).

In order to change the video content displayed on the display ("display panel") 120 in a time series, the display video signal generation unit 112 repeatedly generates the display video signal g2 while changing the display video signal g2 corresponding to the video. The display video signal generation unit 112 includes, for example, a memory for temporarily storing the original video signal g1 input to the input unit, and a display for adjusting the display size of the display 120 by the original video signal g1 stored in the memory. The signal adjustment unit (not shown) of the video signal g2 and the video memory M1 and M2 (FIG. 5) that alternately store the display video signal g2 generated repeatedly. The signal adjustment unit extracts (extracts) a signal corresponding to the image in which the original video signal g1 is displayed in accordance with the size of the display 120, and generates a display video signal g2. The signal adjustment unit is realized by, for example, executing a predetermined program for capturing images by the CPU of the video signal generating device 110. The operations of the signal adjustment unit and the notification signal generation unit 116 will be described later in detail.

The output interface 114 outputs the display video signal g2 generated by the display video signal generation unit 112. The output display video signal g2 is input to the display 120 to be inspected. Put on display 120 The white balance adjustment image corresponding to the display image signal g2 is reflected. The output interface 114 is constructed, for example, by an output terminal in accordance with a predetermined specification.

The notification signal generation unit 116 generates a notification signal s1 for notifying the change timing in response to the change of the display video signal g2 by the display video signal generation unit 112. The notification signal generation unit 116 generates the notification signal s1 by detecting that the display video signals g2 stored in the image memories M1 and M2 are different from each other. The notification signal s1 is, for example, a signal having one pulse. The notification signal s1 is a trigger signal for causing the color analyzer 130 to start measuring an image displayed on the display 120. The notification signal generation unit 116 is realized by, for example, executing a predetermined program by a CPU mounted on the comparison circuit or the notification signal generation unit 116.

The video signal generating device 110 further includes a notification signal output interface (also referred to as an "output interface") 118 that outputs the notification signal s1 to the outside. The notification signal output interface 118 is configured, for example, by an output terminal. 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 sensing unit 130A and a measuring device body 130B. The optical sensing unit 130A includes a photoelectric conversion element 132. The measurement device 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 the light emitted from the display 120 that displays the image corresponding to the display image signal g2, and converts the light to the electric signal e1. The photoelectric signal acquisition unit 134 acquires the photoelectric conversion element 132 The transformed electrical signal e1. The photoelectric conversion element 132 is configured by, for example, three optical units that receive light passing through the respective filters of the three-stimulus value XYZ. The control unit 138 detects the notification signal s1, and in response to the notification signal s1, controls the photoelectric signal acquisition unit 134 to cause the photoelectric signal acquisition unit 134 to acquire the electrical signal e1. In this control, the control unit 138 causes the photoelectric signal acquisition unit 134 to acquire the electric signal e1 when the predetermined time has elapsed after the generation of the notification signal s1. The photoelectric signal acquisition unit 134 and the control unit 138 are realized by, for example, causing the CPU of the color analyzer 130 to execute a predetermined program.

The notification signal input interface 136 inputs the notification signal s1 output by the video signal generating device 110. The notification signal input interface 136 is configured by, for example, an input terminal or the like.

The color analyzer 130 further includes a calculation unit (not shown) that calculates a luminance/chrominance value from the electrical signal e1 acquired by the photoelectric signal acquisition unit 134, and stores a luminance/chrominance value calculated by the calculation unit. Storage unit (not shown). The system control unit 102 of the computer 100 transmits an output command for outputting the measured value by the control unit 138 of the color analyzer 130, and the control unit 138 of the color analyzer 130 outputs the luminance/chroma value stored in the storage unit to the computer 100.

Next, the signal adjustment unit and the notification signal generation unit 116 of the video signal generation device 110 will be described in detail later. FIG. 5 is a view for explaining an operation of the video signal generating device 110 to generate the display video signal g2 and the notification signal s1. The computer 100 recognizes the video signal generating device 110 as a secondary monitor, and generates the original generated by the original video signal generating unit 104. The video signal g1 is output to the video signal generating device 110 in accordance with the HDMI standard.

The video signal generating device 110 generates the display video signal g2 by extracting the original video signal g1 input to the input unit into the display size of the display 120 by the signal adjustment unit. The display video signal g2 is generated by adjusting the original video signal g1. The video signal generating device 110 stores the display video signal g2 generated by the display video signal generating unit 112 in the video memory M1. The original video signal g1 is input, for example, in accordance with the NTSC method, and the following original video signal g1 is input at a timing synchronized to 60 Hz.

The display video signal generation unit 112 of the video signal generation device 110 captures the newly input original video signal g1 into the display size of the display 120 in the signal adjustment unit, generates a new display video signal g2, and stores it in the image memory M2. . On the other hand, the output interface 114 also outputs the display image signal g2 to the display 120 interactively from the image memories M1 and M2 at a timing synchronized to 60 Hz.

The output interface 114 outputs the display video signal g2 from the image memory M1 to the display 120, and the original video signal g1 input from the next input is captured by the signal adjustment unit to the display size of the display 120. The display is stored in the image memory M1 by the image signal g2. Further, the output interface 114 outputs the display video signal g2 from the image memory M2 to the display 120, and then the next input original video signal g1 is captured by the signal adjustment unit to the display size of the display 120. Stored as a new display image signal g2 to the image memory M2.

In other words, the signal adjustment unit temporarily stores the display image signal g2 in the image memory M1 and the image memory M2, and the output interface 114 adjusts the adjusted display image signal g2 from the image memory M1 and the image memory M2. The output is constantly output to the display 120. As a result, two video memories are stored and stored alternately in a constant manner in order to prevent the writing from occurring in the middle of reading and to simultaneously access in the same area, thereby causing a state in which the image is disordered.

The notification signal generation unit 116 constantly monitors the display video signal g2 stored in the image memory M1 and the image memory M2. Specifically, the RGB values of the pixels p1 and q1 of one pixel unit of each video memory stored in the display video signal g2 of the image memory M1 and the image memory M2 are constantly compared. If the RGB values change between the primes p1 and q1, the notification signal s1 is generated. For example, when the 1 pixel unit of the display video signal g2 stored in the image memory M1 is RGB (255, 255, 255), RGB (255, 255, 255) is stored in one pixel unit of the image memory M2. The notification signal s1 is not generated in the case of the video signal, but the notification signal s1 is generated when the RGB (120, 120, 120) display video signal g2 is stored. Further, in the present embodiment, in the change of the RGB values of the one pixel unit of the video memory M1, M2, the change in the brightness or color of the image corresponding to the display video signal g2 is detected, but the detection method is detected. The method of the present embodiment is not limited to a method of detecting a change in brightness or color of the image corresponding to the display video signal g2 at a timing before outputting the display video signal g2 to the display 120.

<Measurement procedure of the display measuring device according to the embodiment>

FIG. 3 is a view showing an example of an operation sequence of the display measurement system 700. After the display measurement system 700 starts the measurement of the display 120, first, the computer 100 generates the first original video signal g1 (operation A), and outputs the original video signal g1. It takes tens of ms time t1 during this period. The time t1 is, for example, 45 ms.

Then, the signal adjustment unit of the display video signal generation unit 112 of the video signal generation device 110 extracts the input first original video signal g1 into the display size of the display 120, and generates the first display video signal g2. The display video signal generation unit 112 temporarily stores the display video signal g2, and then stores it in the video memory M1 (operation B), and outputs it to the display 120 from the output interface 114. It takes tens of ms time t2 during this period. The time t2 is, for example, 35 ms.

Next, the first display video signal g2 is input to the monitor 120 to be inspected, and the image corresponding to the first display video signal g2 is projected on the display 120 (operation D). The display 120 is composed of liquid crystal. In this characteristic, it takes a time t3 of several tens of ms until the luminance/chromaticity of the image to be reflected reaches stability. The time t3 is, for example, 70 ms.

On the other hand, the notification signal generating unit 116 constantly monitors the display video signal g2 stored in the video memory M1, M2, and the RGB value of one pixel unit of the first display video signal g2 stored in the video memory M1. When the RGB value of one pixel unit of the display video signal g2 stored in the image memory M2 is different, the notification signal is output. S1 (the front end of the inverted triangle with the diagonal line added, the output timing of the notification signal s1 is displayed). Further, the image memory M1 and the image memory M2 store RGB (0, 0, 0) video signals as initial values. Next, 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 waits for the liquid crystal stabilization (operation C) at a predetermined timing (for example, the time required for the liquid crystal to stabilize). The timing after t3) causes the photoelectric signal acquisition unit 134 to acquire the electrical signal e1 converted by the photoelectric conversion element 132 (operation E). In the acquisition operation, for example, after the control unit 138 of the color analyzer 130 detects the notification signal s1, the control unit 138 performs the photoelectric conversion element 132 on the photoelectric conversion element 132 by acquiring the electric signal e1 after the waiting time t3 elapses.

The control unit 138 obtains a luminance/chrominance value of the video displayed on the display 120 by performing predetermined calculation on the electrical signal e1 obtained by the photoelectric signal acquisition unit 134. The control unit 138 stores the acquired luminance/chroma values in the memory for storage.

On the other hand, after outputting the first original video signal g1, the system control unit 102 of the computer starts generating the second original video signal g1 after a predetermined time elapses (ACT A). That is, the system control unit 102 switches the original video signal g1. This timing is the time in the order, and is located within the time t3 during which the liquid crystal is stabilized (the reversed white end of the inverted triangle indicates the switching timing of the original video signal g1).

The aforementioned liquid crystal stabilization wait (action C), and electrical signals The acquisition of e1 (action E) cannot be performed in parallel from the viewpoint of obtaining a highly reliable measurement value, and is an operation that is necessary in any case. Therefore, in the display measurement system 700, as shown in FIG. 3, it is preferable that the operation C and the operation E are continuously performed alternately with each other, and the computer 100 switches the original video signal g1. Thereby, it is possible to minimize the time required for the measurement of the plurality of images sequentially displayed on the display 120 in time series. Further, in order to perform the measurement of the stability, the operation C and the operation E may be separated by a certain amount of time.

Then, the same operation is repeated, and after the video measurement corresponding to each display video signal g2 is completed, the system control unit 102 of the computer 100 transmits an output command of the measurement value to the control unit 138 of the color analyzer 130, and then the control unit 138 The luminance/chroma value stored in the storage unit is output to the computer 100.

Further, the output of the pair of luminance/chrominance values of the computer 100 may be followed by a signal indicating completion of the measurement by the color analyzer 130 to the system of the computer 100 after each video measurement corresponding to each of the display video signals g2 is completed. The operations returned by the control unit 102 are sequentially performed in sequence. This sequence of actions is shown in Figure 4.

FIG. 4 is a view showing another example of the operation sequence of the display measurement system 700. In the operation sequence shown in FIG. 3, the display measurement system 700 obtains all the measurement results from the color analyzer 130 after the measurement of the plurality of images sequentially displayed by the color analyzer 130 to the display 120 in the time of adjustment. . On the other hand, in the operation sequence shown in FIG. 4, the transfer operation F of the measurement result is in the color analyzer 130. After the completion of the measurement operation E of one image, the computer 100 performs the next original video signal g1 at time t4 until the start of the generation operation A. Thereby, the computer 100 outputs the original video signal g1 to the video signal generating device 110 at the same time interval as the operation sequence shown in FIG. 3, and the color analyzer 130 can simultaneously perform the measurement of the display 120.

Further, in the display measurement system 700, the computer 100 includes the original video signal generation unit 104 that generates the original video signal g1. However, for example, the video signal generation device 110 includes the original video signal generation unit 104 and the system control of the computer 100. The unit 102 may transmit an instruction to generate the original video signal g1 to the video signal generating device 100.

Further, in the above description of the display measurement system 700, although the white balance adjustment is exemplified, each monochrome image of R, G, and B may be displayed on the display, and each monochrome adjustment may be performed.

Further, when the color analyzer 130 is provided with a flash measurement function, the method of the present embodiment may be used in the flash inspection. In the case of the flash inspection, for example, the plurality of images in the form of a grid of birds are sequentially displayed on the display 120 in time series, and the grid of each image is measured by the optical sensing unit 130A, and the timing of the measured value of the luminance obtained by the measuring apparatus main body 130B is changed. To measure the flash. Further, the notification signal generating unit 116 of the video signal generating device 110 may compare the signal values of the pixels of the same address other than the trellis portion in the display video signal g2 stored in the video memories M1 and M2. To generate the notification signal s1.

<Different from the prior art>

A difference between the display measurement system 700 (display measurement device 500) of the embodiment and the display measurement system 1700 (display measurement device 1500) of the prior art will be described.

FIG. 7 is a block diagram of the configuration of a prior art display measurement system 1700. FIG. 8 is a view showing an operation sequence of the display measurement system 1700.

As shown in FIG. 2, in the display measurement system 700, the video signal generation device 110 includes a notification signal generation unit 116 that generates a notification signal s1, and a notification signal output interface 118 that outputs a notification signal s1. Thereby, in the display measurement system 700, the video signal generation device 110 supplies the notification signal s1, which is a trigger signal for starting the measurement by the color analyzer 130, to the color analyzer 130 via the notification signal input interface 136.

On the other hand, as shown in FIG. 7 , in the display measurement system 1700, the video 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 unit 1002 of the computer 1000 supplies the measurement command s2 that causes the color analyzer 1300 to start measurement to the color analyzer 1300 via the command input interface 1306.

Thereby, in the display measurement system 1700 of the prior art, the computer 1000 performs the measurement operation of the color analyzer 1300 (the operation of the color analyzer 1300 to obtain the luminance/chroma value of the display 120), and the original image signal g1. Generation and output (switching). Therefore, the computer 1000 cannot generate and output the original video signal g1 at an arbitrary timing. Therefore, the computer 1000 is as shown in FIG. After the measurement by the color analyzer 1300 is completed, the original image signal g1 is switched.

However, in the display measurement system 700 of the embodiment, the computer 100 does not perform the control of the color analyzer 130 to obtain the luminance/chrominance value operation of the display 120. Therefore, in the display measurement system 700, the computer 100 can generate and output the original video signal g1 for white balance adjustment at an arbitrary timing. Therefore, the display measurement system 700 can generate and output the original video signal g1 at a timing earlier than the display measurement system 1700 of the prior art, thereby shortening the measurement interval of each image required for display adjustment on the display 120 (for each image) Display interval). That is, in the display measurement system 700, the inspection time of the display 120 can be shortened compared to the display measurement system 1700.

According to the video signal generating apparatus 100 of the present embodiment configured as described above, the notification signal generating unit 116 of the video signal generating apparatus 110 generates a notification signal for notifying the change timing in response to the change timing of the display video signal g2. S1. Next, when the display measurement system 700 includes, for example, the video signal generation device 110, the color analyzer 130, and the computer 100 that controls the computer 100, the image signal generation device 100 is adapted to generate the image according to the original image signal g1 supplied from the computer 100. When the display image signal g2 of the display of the display 120 is output 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 does not need to control the measurement action of the color analyzer 130. Thereby, the generation process of the original image signal g1 and the display 120 of the color analyzer 130 can be performed by the parallel computer 100. Therefore, it is possible to shorten the time required for the display 120 to display the images sequentially displayed after the start of the color analyzer 130 until the end of all the image measurements.

Further, according to the display measurement device 500 of the present embodiment, the photoelectric signal acquisition unit 134 controls the photoelectric signal acquisition unit 134 to obtain the electrical signal e1 in response to the notification signal s1. When the computer 100 supplies the original video signal g1 that is the source of the display video signal g2 to the video signal generating device 110, the computer 100 does not need to supply the notification signal s1. Therefore, the acquisition of the electric signal e1 by the parallel photoelectric signal acquisition unit 134 and the generation of the original video signal g1 by the computer 100 can be performed. Thereby, it is possible to shorten the time required for the display 120 to measure the images sequentially displayed after the start of the color analyzer 130 until the end of all the image measurement.

Further, according to the display measurement device 500 of the present embodiment, the control unit 138 controls the photoelectric signal acquisition unit 134 to cause the photoelectric signal acquisition unit to pass the predetermined time t3 after the notification signal s1 is generated. 134 obtains the electrical signal e1. Therefore, when the time t3 is set to the time when the liquid crystal display characteristic of the display 120 is stabilized, the measured value of the characteristic of the display 120 can be stabilized.

The present invention has been described in detail, but the above description is only illustrative of all aspects and is not intended to be limiting. Therefore, the present invention can be adapted, modified, and omitted in the scope of the invention.

100‧‧‧ computer

102‧‧‧System Control Department

104‧‧‧ Original image signal generation unit

110‧‧‧Image signal generating device

112‧‧‧Display image signal generation unit

114‧‧‧Output interface

116‧‧‧Notification signal generation unit

118‧‧‧Notification signal output interface (output interface)

120‧‧‧ display

130‧‧‧Color Analyzer

132‧‧‧ photoelectric conversion components

134‧‧‧Photoelectric Signal Acquisition Department

136‧‧‧Notification signal input interface (input interface)

138‧‧‧Control Department

700‧‧‧Display Measurement System

G2‧‧‧display image signal

S1‧‧‧Notice signal

E1‧‧‧Electric signal

500‧‧‧Display measuring device

Claims (4)

An image signal generating device includes: a display image signal generating unit that changes and displays a display image signal corresponding to the image in order to change the video content displayed on the display, and generates the display image signal; The display video signal generated by the unit is output to the output interface of the display, and the display video signal generation unit changes the timing of changing the display video signal, and generates a notification signal for notifying the notification signal of the change timing. unit. A display measuring device comprising: the video signal generating device according to claim 1, the light emitted from the display that receives the display video signal and displays the image corresponding to the display video signal, and converts the light to electricity The photoelectric conversion element of the signal, the photoelectric signal acquisition unit that acquires the electrical signal converted by the photoelectric conversion element, detects the notification signal, and controls the photoelectric signal acquisition unit to cause the photoelectric signal acquisition unit to acquire the electrical signal in response to the notification signal. Control department. The display device according to the second aspect of the invention, wherein the control unit controls the photoelectric signal acquisition unit to cause the photoelectric signal acquisition unit to acquire the electrical signal when a predetermined time elapses after the generation of the notification signal. The display measuring device according to claim 2 or 3, further comprising: a color analyzer independent of the video signal generating device; the color analyzer comprising: the photoelectric signal acquiring unit and the control unit; and the video signal generating device A notification signal output interface for outputting the notification signal to the outside is provided, and the color analyzer further includes an input interface for inputting the notification signal output by the video signal generation device.