Control device, display device control system, and control method for control device

Abstract

To accurately measure the color and prevent color calibration from being redone by warming up the colorimeter using a display device and suppressing the temperature change of a colorimeter during calibration.SOLUTION: A control device includes a warm-up determination unit that determines whether the colorimeter needs to be warmed up on the basis of a predetermined condition when color calibration of a display device is performed, a display control unit that causes the display device to display a predetermined image indicating a mounting position of the colorimeter on the display device when the warm-up determination unit determines that the colorimeter needs to be warmed up, and a warm-up control unit that starts warming up the colorimeter using the display device when it is determined that the colorimeter is attached to the mounting position.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a control device, a display device control system, and a control method for a control device. [Background technology]

[0002] A colorimeter may be used to calibrate the colors displayed by a display device (color calibration). The colorimeter measures the displayed colors, and the display device is adjusted (calibrated) to minimize deviations from target colors and brightness. For example, a color calibration system disclosed in Patent Document 1 includes a display device equipped with a color sensor that detects the color temperature and illuminance of ambient light, a microcomputer, and a colorimeter that measures the color of the display device's display screen from outside. The microcomputer calculates target values ​​using a preset calculation formula and the detection results of ambient light detected by the color sensor, and performs color calibration of the display device so that the color measurement results from the colorimeter match the target values. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-169922 Summary of the Invention [Problem to be solved by the invention]

[0004] During color calibration, the colorimeter is attached to the display device. Color calibration takes a certain amount of time. The temperature of the colorimeter may change (rise) during color calibration due to the heat emitted by the display device. Colorimeters are precision instruments. Temperature changes affect the color measurement results. If the colorimeter is at a low temperature when color calibration begins, its temperature may change significantly during color calibration. A large temperature change may result in larger color measurement errors. In addition, some colorimeters may need to be reinitialized (re-calibration of the colorimeter itself) if the temperature change from the start of color calibration exceeds the allowable range. Reinitializing the colorimeter also requires redoing the color calibration of the display device.

[0005] One aspect of the present disclosure aims to accurately measure colors and prevent the need to redo color calibration by using a display device to warm up a colorimeter and suppressing temperature changes in the colorimeter during calibration. [Means for solving the problem]

[0006] A control device according to one aspect of the present disclosure includes a warm-up determination unit that determines whether or not warm-up of a colorimeter is necessary based on predetermined conditions when performing color calibration of a display device; a display control unit that causes the display device to display a predetermined image indicating the installation position of the colorimeter on the display device when the warm-up determination unit determines that warm-up of the colorimeter is necessary; and a warm-up control unit that uses the display device to start warming up the colorimeter when it determines that the colorimeter has been installed at the installation position.

[0007] A display device control system according to another aspect of the present disclosure includes a display device and a control device, and includes a warm-up determination unit that determines whether or not warm-up of the colorimeter is necessary based on predetermined conditions when performing color calibration of the display device, a display control unit that causes the display device to display a predetermined image indicating the installation position of the colorimeter on the display device when the warm-up determination unit determines that warm-up of the colorimeter is necessary, and a warm-up control unit that starts warming up of the colorimeter using the display device when it determines that the colorimeter has been installed at the installation position.

[0008] A control method for a control device according to yet another aspect of the present disclosure includes, when performing color calibration of a display device, determining whether or not warming up of a colorimeter is necessary based on predetermined conditions, displaying on the display device a predetermined image indicating the installation position of the colorimeter on the display device when it is determined that warming up of the colorimeter is necessary, determining whether or not the colorimeter is installed at the installation position, and starting warming up of the colorimeter using the display device when it is determined that the colorimeter is installed at the installation position. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of a display device control system according to an embodiment. [Figure 2] FIG. 2 is a diagram illustrating an example of a control device according to an embodiment. [Figure 3] FIG. 1 is a diagram illustrating an example of a display device according to an embodiment. [Figure 4] FIG. 3 is a diagram illustrating an example of an installation location of a first temperature sensor according to the embodiment. [Figure 5] FIG. 2 is a diagram illustrating an example of a colorimeter according to an embodiment. [Figure 6] FIG. 4 is a diagram illustrating an example of history data according to the embodiment. [Figure 7] FIG. 1 is a diagram illustrating an overview of processing related to color calibration according to an embodiment. [Figure 8] FIG. 4 is a diagram showing an example of a flow of a first stage process according to the embodiment. [Figure 9] FIG. 10 is a diagram showing an example of a flow of a second stage process according to the embodiment. [Figure 10] FIG. 4 is a diagram showing an example of a first operation screen according to the embodiment. [Figure 11] FIG. 10 is a diagram illustrating an example of a predetermined image according to the embodiment. [Figure 12] FIG. 6 is a diagram showing an example of a flow of a warm-up process for the display device and the colorimeter according to the embodiment. [Figure 13] FIG. 10 is a diagram showing an example of a second operation screen according to the embodiment. [Figure 14] FIG. 10 is a diagram showing an example of a flow of a warm-up process for only the display device according to the embodiment. [Figure 15] FIG. 10 is a diagram showing an example of the flow of a warm-up process for only the colorimeter according to the embodiment. [Figure 16] FIG. 10 is a diagram showing an example of a flow of a fourth stage of processing according to the embodiment. [Figure 17] FIG. 10 is a diagram showing an example of a third operation screen according to the embodiment. [Figure 18] FIG. 10 is a diagram showing an example of a fourth operation screen according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] A display device control system 100 and a control device 200 according to the present disclosure will be described below with reference to the drawings. Note that in the drawings, the same or equivalent elements are denoted by the same reference numerals.

[0011] (Display device control system 100) First, an example of a display device control system 100 will be described with reference to Fig. 1. Fig. 1 is a diagram showing an example of a display device control system 100 according to an embodiment.

[0012] 1, the display device control system 100 includes a control device 200 and a display device 300. The display device control system 100 may include a colorimeter 500.

[0013] For example, the control device 200 is a computer (PC). Fig. 1 shows a notebook PC as an example of the control device 200. Calibration software CS1 is installed in the control device 200 (see Fig. 2). The calibration software CS1 includes a program that enables the control device 200 to control the display device 300 and the colorimeter 500 and perform color calibration.

[0014] The display device 300 is a device that displays video. For example, the display device 300 can display video based on a video signal output by the control device 200. The display device 300 may also receive a broadcast and display the video. The display device 300 may also display the video based on a video signal stored in a storage device.

[0015] The colorimeter 500 measures the color and brightness of an object to be measured. The colorimeter 500 is also referred to as a colorimetric sensor or a colorimeter. In this description, the colorimeter 500 measures the color and brightness of an image (video) displayed by the display device 300. The colorimeter 500 outputs values ​​(measured values) corresponding to the color and brightness of the object to be measured. For example, the colorimeter 500 outputs each value of (x, y, Y) as the measured values. When color calibrating the display device 300, the colorimeter 500 is attached to the display device 300. When color calibrating the display device 300, the colorimeter 500 measures the color of the video (image) displayed by the display device 300.

[0016] An aperture (opening) is provided on one surface of the colorimeter 500 to allow light emitted by or reflected from the object to be measured to enter the device. The colorimeter 500 performs measurements based on the light from the aperture. The area facing the aperture is the measurement area of ​​the colorimeter 500. When measuring the color of an image displayed by the display device 300, the aperture is directed toward the screen of the display device 300. For example, the plane on which the aperture of the colorimeter 500 is provided is in contact with the screen.

[0017] The colorimeter 500 is attached to the display device 300 using the attachment device 400. The attachment device 400 shown in FIG. 1 is belt-shaped or string-shaped. One longitudinal end of the attachment device 400 is connected to an end of the colorimeter 500. The other longitudinal end of the attachment device 400 is hooked onto the back side of the display device 300. The attachment device 400 is wrapped around the upper bezel of the display device 300. As a result, the colorimeter 500 is suspended. The mounting position of the colorimeter 500 relative to the screen of the display device 300 is adjustable.

[0018] (Control device 200) Next, an example of the control device 200 will be described with reference to Fig. 2. Fig. 2 is a diagram showing an example of the control device 200 according to the embodiment.

[0019] The control device 200 includes a control unit 201 , a storage unit 202 , a temperature sensor 203 , an input device 204 , a display unit 205 , a first communication unit 206 , and a second communication unit 207 .

[0020] The control unit 201 includes a control circuit 211. The control circuit 211 is a processor, such as a CPU. For example, the memory unit 202 includes a RAM, a ROM, and storage. The storage is either a hard disk or a solid state drive, or both. The control circuit 211 executes programs and software stored in the memory unit 202 to operate as the control unit 201.

[0021] 2, for example, the control unit 201 includes a warm-up determination unit 212, a display control unit 213, a warm-up control unit 214, a recording processing unit 216, and a calibration execution unit 217. The warm-up determination unit 212, the display control unit 213, the warm-up control unit 214, the recording processing unit 216, and the calibration execution unit 217 are functionally realized by the control circuit 211 (processor) executing programs and software stored in the storage unit 202. Note that the control unit 201 may also include circuits (hardware) that perform the processes of the warm-up determination unit 212, the display control unit 213, the warm-up control unit 214, the recording processing unit 216, and the calibration execution unit 217.

[0022] The temperature sensor 203 is a sensor for detecting the environmental temperature (room temperature) of the room in which the control device 200 (display device control system 100, display device 300) is installed. The control circuit 211 detects the environmental temperature based on the output of the temperature sensor 203. The input device 204 is a device for operating and setting the control device 200. For example, the input device 204 may be a mouse or a keyboard. The display unit 205 is a PC display that displays a setting screen and an operation screen for the control device 200.

[0023] The first communication unit 206 communicates with the display device 300. The first communication unit 206 may communicate with the display device 300 via wired communication. In this case, the first communication unit 206 includes a communication control circuit, a communication memory, and a connector. For example, the first communication unit 206 and the display device 300 communicate in accordance with at least one standard such as RS-232C, USB, wired LAN, and HDMI (registered trademark) CEC. The first communication unit 206 may also communicate with the display device 300 via wireless communication. In this case, the first communication unit 206 includes a communication control circuit, a communication memory, and an antenna. For example, the first communication unit 206 and the display device 300 may communicate in accordance with a wireless LAN standard.

[0024] The second communication unit 207 communicates with the colorimeter 500. The second communication unit 207 may communicate with the colorimeter 500 via wired communication. In this case, the second communication unit 207 includes a communication control circuit, a communication memory, and a connector. For example, the second communication unit 207 and the colorimeter 500 communicate in accordance with at least one standard such as USB or wired LAN. The second communication unit 207 may also communicate with the colorimeter 500 via wireless communication. In this case, the second communication unit 207 includes a communication control circuit, a communication memory, and an antenna. For example, the second communication unit 207 and the colorimeter 500 may communicate in accordance with a wireless LAN standard.

[0025] (Display device 300) Next, an example of the display device 300 will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a diagram showing an example of the display device 300 according to an embodiment. Fig. 4 is a diagram showing an example of the installation location of the first temperature sensor 303 according to the embodiment.

[0026] The display device 300 includes a display control unit 301 , a display storage unit 302 , a first temperature sensor 303 , an operation unit 304 , a display panel 305 , a display drive unit 306 , and a display communication unit 307 .

[0027] The display control unit 301 includes a display control circuit 311. For example, the display control circuit 311 may be an integrated processing circuit (processor) for the display device 300 that performs control and calculations. For example, the display storage unit 302 includes a RAM and a ROM. The display control circuit 311 executes a program stored in the display storage unit 302 to operate as the display control unit 301.

[0028] 3, for example, the display control unit 301 includes a pattern generation unit 312 and a command processing unit 313. The pattern generation unit 312 and the command processing unit 313 are functionally realized by a display control circuit 311 (processor) executing programs and software stored in the display storage unit 302. Note that the display control unit 301 may include circuits (hardware) that perform the processing of the pattern generation unit 312 and the command processing unit 313.

[0029] The first temperature sensor 303 is a sensor for detecting the temperature inside the display device 300. As shown in FIG. 4, multiple first temperature sensors 303 may be provided. For convenience, only one first temperature sensor 303 is illustrated in FIG. 3. The dashed rectangle in FIG. 4 indicates an example of the installation position of the first temperature sensor 303. FIG. 4 shows an example in which five first temperature sensors 303 are arranged. The number of first temperature sensors 303 may be less than five or may be six or more. FIG. 4 shows an example in which the first temperature sensors 303 are arranged inside the center point CP (rectangle with the number 1) of the screen (display area) of the display panel 305, inside the area above the center point CP (rectangle with the number 2), inside the area to the left of the center point CP (rectangle with the number 3), inside the area to the right of the center point CP (rectangle with the number 4), and near a part of the backlight (rectangle with the number 5). Based on the output of the first temperature sensor 303, the display control circuit 311 recognizes (detects) the temperature at the installation point of the first temperature sensor 303. The display control circuit 311 can detect the temperatures of a plurality of points on the display device 300.

[0030] The operation unit 304 is a device for operating and setting the display device 300. For example, the operation unit 304 is at least one of a remote control and buttons provided on the main body of the display device 300. The operation unit 304 accepts operations for changing the settings of the display device 300.

[0031] The display panel 305 includes, for example, a liquid crystal panel and a backlight. For example, the liquid crystal panel has a pair of glass substrates. One of the pair of glass substrates can be used as an array substrate, and the other as a color filter substrate. A plurality of pixel electrodes are provided on the array substrate. The alignment of liquid crystal is controlled for each pixel electrode (subpixel). For example, one pixel includes R (red), G (green), and B (blue) subpixels. For example, R (red), G (green), and B (blue) color filters are provided on the color filter substrate for each pixel. When viewed perpendicularly to the plane of the glass substrate, one color filter is disposed at a position overlapping each pixel electrode of the array substrate. A liquid crystal layer (not shown) containing liquid crystal molecules is sealed between the pair of glass substrates. A display driver 306 applies a driving voltage to the pixel electrode (liquid crystal layer) of each subpixel based on a video signal. The application of the driving voltage changes the orientation of the liquid crystal molecules in the liquid crystal layer. The display driver 306 controls the magnitude of the voltage applied to the pixel electrodes, and increases or decreases the transmittance of light emitted from the light source (backlight) for each sub-pixel, thereby adjusting the brightness of the sub-pixels. In other words, the display driver 306 can adjust the brightness of each sub-pixel.

[0032] The display panel 305 may be an organic EL panel instead of a liquid crystal panel. In this case, the display driver 306 can also adjust the luminance of each sub-pixel.

[0033] The display communication unit 307 communicates with the control device 200 (communication unit). The display communication unit 307 may communicate with the control device 200 via wired communication. In this case, the display communication unit 307 includes a communication control circuit, a communication memory, and a connector. For example, the display communication unit 307 and the control device 200 communicate in accordance with at least one standard such as RS-232C, USB, wired LAN, and HDMI (registered trademark) CEC. The display communication unit 307 may also communicate with the control device 200 via wireless communication. In this case, the display communication unit 307 includes a communication control circuit, a communication memory, and an antenna. For example, the display communication unit 307 and the control device 200 may communicate in accordance with a wireless LAN standard.

[0034] (Colorometer 500) Next, an example of the colorimeter 500 will be described with reference to Fig. 5. Fig. 5 is a diagram showing an example of the colorimeter 500 according to the embodiment.

[0035] The colorimeter 500 includes a colorimetric control unit 501 , a colorimetric storage unit 502 , a second temperature sensor 503 , a lamp 504 , a measurement unit 505 , a colorimetric communication unit 506 , and an initialization reference unit 507 .

[0036] The colorimetry control unit 501 includes a colorimetry control circuit 511. For example, the colorimetry control circuit 511 is a processor. For example, the colorimetry storage unit 502 includes a RAM and a ROM. The colorimetry control circuit 511 executes a program stored in the colorimetry storage unit 502 to operate as the colorimetry control unit 501. As shown in FIG. 5 , for example, the colorimetry control unit 501 includes a measurement processing unit 512. The measurement processing unit 512 is functionally realized when the colorimetry control circuit 511 executes a program or software stored in the colorimetry storage unit 502. Note that the colorimetry control unit 501 may include a circuit (hardware) that performs the processing of the measurement processing unit 512.

[0037] The second temperature sensor 503 is a sensor for detecting the temperature inside the colorimeter 500. Based on the output of the second temperature sensor 503, the colorimeter control circuit 511 recognizes (detects) the temperature inside the colorimeter 500. The lamp 504 irradiates the measurement object with light. For example, the lamp 504 is an LED. The colorimeter control circuit 511 can control the turning on and off of the lamp 504. For example, the colorimeter control circuit 511 turns on the lamp 504 when initializing the colorimeter 500. Initialization of the colorimeter 500 refers to color calibration (correction processing) of the colorimeter itself, which is performed by measuring the white of a white reference plate provided in the colorimeter 500, for example.

[0038] The measuring unit 505 measures the color of the object to be measured. The measuring unit 505 includes, for example, a light collection channel, a light guide, a wavelength-selective photoelectric converter, and a signal processing circuit. For example, the light guide is an optical fiber or a light-conducting rod. The wavelength-selective photoelectric converter includes, for example, a diffraction grating and a detector array. For example, the detector array includes a diode line.

[0039] The light collection channel includes, for example, a lens. The light collection channel captures light emitted or reflected by the object to be measured, within a predetermined capture angle range, which passes through an aperture. The captured light is guided to a light guide. The light guide directs the captured light to a diffraction grating. Individual spectral elements of the captured light reach a detector array. The detector array outputs an electrical signal of a magnitude corresponding to the amount of light (intensity) for each wavelength of light. A signal processing circuit processes the electrical signal output by the detector array. For example, the signal processing circuit obtains digital values ​​indicating the hue, saturation, and luminance of the object to be measured as measurement values. The colorimeter 500 outputs measurement values ​​corresponding to the measured color. Note that the configuration of the measurement unit 505 is not limited to the above.

[0040] The colorimetry communication unit 506 communicates with the control device 200 (second communication unit 207). The colorimetry communication unit 506 may communicate with the control device 200 via wired communication. In this case, the colorimetry communication unit 506 includes a communication control circuit, a communication memory, and a connector. For example, the colorimetry communication unit 506 and the second communication unit 207 communicate in accordance with at least one standard, such as USB or wired LAN. The colorimetry communication unit 506 may also communicate with the second communication unit 207 via wireless communication. In this case, the colorimetry communication unit 506 includes a communication control circuit, a communication memory, and an antenna. For example, the colorimetry communication unit 506 and the second communication unit 207 may communicate in accordance with a wireless LAN standard. The initialization reference unit 507 is a reference color component used for initializing the colorimeter 500 (color calibration of the colorimeter body) described above, and is, for example, a white reference plate built into the colorimeter 500 in advance.

[0041] (Generating historical data LD1) Next, an example of generation of history data LD1 will be described with reference to Fig. 6. Fig. 6 is a diagram showing an example of history data LD1 according to the embodiment.

[0042] The recording processing unit 216 of the control unit 201 generates history data LD1. The history data LD1 is data indicating the history of the temperature distribution of the display device 300 and the history of the internal temperature of the colorimeter 500. The recording processing unit 216 transmits a temperature detection command to the display device 300 and the colorimeter 500. Based on this command, the display device 300 and the colorimeter 500 detect the temperature. The recording processing unit 216 also transmits a transmission command for the detected temperature to the display device 300 and the colorimeter 500. Based on this command, the display device 300 and the colorimeter 500 transmit the detected temperature to the control device 200. The recording processing unit 216 stores the received temperature data as history data LD1 in a non-volatile manner in the memory unit 202. FIG. 6 shows an example of the history data LD1.

[0043] The recording processing unit 216 may transmit a temperature detection command and a detected temperature transmission command to the display device 300 and the colorimeter 500 at a predetermined cycle. Furthermore, the recording processing unit 216 may transmit a temperature detection command and a detected temperature transmission command to the display device 300 and the colorimeter 500 for each predetermined event. For example, the recording processing unit 216 may transmit a temperature detection command and a detected temperature transmission command to the display device 300 and the colorimeter 500 at the start of warming up the display device 300, the end of warming up, the start of color calibration, the completion of adjustment of one item of color calibration, and the end of color calibration.

[0044] 6, the recording processing unit 216 may include the date and time when the history was recorded in the history data LD1. The recording processing unit 216 may also include the state (status) of the display device 300 at the time of recording the history in the history data LD1. The recording processing unit 216 may also include the elapsed time since the display device 300 was powered on for each date and time when the history was recorded in the history data LD1. The recording processing unit 216 may also include the first detected temperature detected from the start to the end of warm-up and from the start to the end of color calibration in the history data LD1. The recording processing unit 216 may also include the second detected temperature detected from the start to the end of warm-up and from the start to the end of color calibration in the history data LD1.

[0045] (Color calibration of the display device 300)

[0046] The brightness and color of each pixel of the display device 300 change over time. To accurately reproduce colors, it is preferable to perform color calibration (color correction processing) at regular intervals. Color calibration involves adjusting various items such as brightness, color gamut, color temperature, gamma, and 3D-LUT. For this reason, color calibration may take a long time.

[0047] For example, the room temperature is low in the morning in winter. The colorimeter 500 and the display device 300 may be cold. During color calibration, the colorimeter 500 comes into contact with the display device 300. During color calibration, the colorimeter 500 is exposed to heat emitted by the display device 300. After color calibration begins, the temperature of the colorimeter 500 rises and may change significantly. The colorimeter 500 is a delicate, precision instrument. Temperature changes in the colorimeter 500 affect the accuracy of the color measurement results. Furthermore, if there is a significant temperature change, depending on the colorimeter 500, re-initialization of the colorimeter 500 may be required. Re-executing the initialization process of the colorimeter 500 interrupts the color calibration of the display device 300. As a result, it may be necessary to redo the color calibration of the display device 300.

[0048] (Processing during color calibration) Next, an overview of the processing related to color calibration of the display device 300 will be described with reference to Fig. 7. Fig. 7 is a diagram showing an overview of the processing related to color calibration according to the embodiment.

[0049] To prevent the need to redo color calibration, display device control system 100 performs a multi-stage process. (1) First Stage The first stage is a stage in which, before color calibration begins, the control device 200 determines, based on predetermined conditions, whether the colorimeter 500 needs to be warmed up and whether the display device 300 needs to be warmed up (details will be described later using Figure 8). (2) Second Stage The second stage is a stage in which, if it is determined that the colorimeter 500 needs to be warmed up, the control device 200 causes the display device 300 to display a predetermined image P1 indicating the installation position (details will be described later using FIGS. 9 to 11). Note that, if it is determined that the colorimeter 500 does not need to be warmed up, the control device 200 skips the processing of the second stage. (3) Third Stage The third stage is a stage in which the control device 200 controls the warm-up when it is determined that at least one of the colorimeter 500 and the display device 300 needs to be warmed up (details will be described later using FIGS. 12 to 15). Note that when it is determined that warm-up of both the colorimeter 500 and the display device 300 is not necessary, the control device 200 skips the processing of the third stage. (4) Fourth Stage After the warm-up is complete, the control device 200 starts color calibration of the display device 300 (details will be described later with reference to FIGS. 16 to 18).

[0050] In this way, when performing color calibration of the display device 300, the warm-up determination unit 212 of the control device 200 determines whether warm-up of the colorimeter 500 is necessary based on predetermined conditions. When the warm-up determination unit 212 determines that warm-up of the colorimeter 500 is necessary, the display control unit 213 causes the display device 300 to display a predetermined image P1 indicating the installation position of the colorimeter 500 on the display device 300. When the warm-up control unit 214 determines that the colorimeter 500 has been installed in the installation position, it causes the display device 300 to start warming up the colorimeter 500. This allows the colorimeter 500 to be warmed up using the display device 300. Color calibration can be started after the colorimeter 500 has been sufficiently warmed up. Even if the colorimeter 500 receives heat from the display device 300 during color calibration, large temperature changes in the colorimeter 500 can be suppressed. Therefore, the colors of the image displayed by the display device 300 can be accurately measured during color calibration. It is also possible to prevent the occurrence of re-initialization of the colorimeter 500 due to a large temperature change in the colorimeter 500. It is also possible to prevent the occurrence of redoing color calibration.

[0051] Many processes are performed in the color calibration of the display device 300. Therefore, for convenience, the processes related to the color calibration of the display device 300 will be described based on the stages described in FIG.

[0052] (First Stage) Next, an example of the above-mentioned first stage processing will be described with reference to Fig. 8 (see Fig. 7). The first stage processing is a stage in which the control device 200 determines whether or not warm-up of the display device 300 and the colorimeter 500 is necessary before starting color calibration. Fig. 8 is a diagram showing an example of the flow of the first stage processing according to the embodiment.

[0053] First, when performing color calibration of the display device 300, the user operates the control device 200 to start the calibration software CS1. The start of Fig. 8 is the point at which the calibration software CS1 is started. The user turns on the power of the display device 300 and the colorimeter 500, and leaves the display device 300 and the colorimeter 500 running. The display device 300 and the colorimeter 500 are in a state where they can communicate with the control device 200.

[0054] First, the warm-up determination unit 212 (control circuit 211) detects the environmental temperature (room temperature) based on the output of the temperature sensor 203 (step S801). Next, the warm-up determination unit 212 causes the display device 300 and the colorimeter 500 to measure the temperature (step S802). Specifically, the warm-up determination unit 212 causes the first communication unit 206 to transmit a temperature detection command using the first temperature sensor 303 to the display device 300. Furthermore, the warm-up determination unit 212 causes the second communication unit 207 to transmit a temperature detection command using the second temperature sensor 503 to the colorimeter 500.

[0055] Upon receiving the temperature detection command, the command processing unit 313 detects the temperature based on the output of each first temperature sensor 303. Then, the command processing unit 313 causes the display communication unit 307 to transmit the detected temperature to the control device 200. Furthermore, upon receiving the temperature detection command, the colorimetry control unit 501 detects the temperature based on the output of the second temperature sensor 503. Then, the colorimetry control unit 501 causes the colorimetry communication unit 506 to transmit the detected temperature to the control device 200.

[0056] As a result, the control device 200 acquires the temperatures measured by the display device 300 and the colorimeter 500 (step S803). Specifically, the first communication unit 206 communicates with the display device 300 including the first temperature sensor 303, and acquires a first detected temperature indicating the temperature of the display device 300 detected by the first temperature sensor 303. Furthermore, the second communication unit 207 communicates with the colorimeter 500 including the second temperature sensor 503, and acquires a second detected temperature indicating the temperature of the colorimeter 500 detected by the second temperature sensor 503. Note that the recording processing unit 216 may non-volatilely store the acquired first detected temperature and second detected temperature in the storage unit 202 as history data LD1.

[0057] Then, the warm-up determination unit 212 determines whether or not the colorimeter 500 needs to be warmed up (step S804). The warm-up determination unit 212 may determine whether or not the colorimeter 500 needs to be warmed up based on the following first, second, and third conditions.

[0058] (First condition) The temperature difference obtained by subtracting the second detected temperature from the first detected temperature is equal to or greater than the first predetermined temperature. It should be noted that a plurality of first temperature sensors 303 are provided. The warm-up determination unit 212 may determine the average, median, maximum, or minimum value of the temperatures detected by the first temperature sensors 303 as the first detected temperature. The first predetermined temperature is determined in advance. For example, the first predetermined temperature is a temperature equal to or greater than 10 degrees Celsius and less than 20 degrees Celsius. For example, the first predetermined temperature may be 15 degrees Celsius. When the colorimeter 500 is not warmed up, the temperature difference between the display device 300 and the colorimeter 500 may be large. When the first condition is satisfied, there is a possibility that the temperature of only the display device 300 has risen. On the other hand, when the colorimeter 500 is warmed up, the temperature of the display device 300 (first detected temperature) and the temperature of the colorimeter 500 (second detected temperature) become close to each other.

[0059] (Second condition) The temperature difference obtained by subtracting the detected environmental temperature (room temperature) from the second detected temperature is less than the second predetermined temperature. The second predetermined temperature is determined in advance. For example, the second predetermined temperature is a value equal to or greater than 2 degrees Celsius and less than 10 degrees Celsius. For example, the second predetermined temperature may be 5 degrees Celsius. When the colorimeter 500 is not heated, the temperature of the colorimeter 500 and the ambient temperature are close to each other. If the second condition is satisfied, the colorimeter 500 may not be heated. On the other hand, for example, if the colorimeter 500 is placed in a warm room, the colorimeter 500 may already be sufficiently warm. If the colorimeter 500 is sufficiently warmed and the temperature of the colorimeter 500 is sufficiently higher than the ambient temperature, the temperature difference exceeds the second predetermined temperature.

[0060] (Third condition) The second detected temperature is lower than the third predetermined temperature. The third predetermined temperature indicates the minimum temperature when the colorimeter 500 is used. In other words, the third predetermined temperature is the minimum value of the recommended temperature range for use of the colorimeter 500. For example, the third predetermined temperature is a temperature equal to or higher than 10 degrees Celsius and lower than 20 degrees Celsius. For example, the third predetermined temperature may be 15 degrees Celsius. If the colorimeter 500 is placed in a cold room, the third condition may be met. If the third condition is met, there is a risk that the color calibration will have to be redone due to the heat of the display device 300 after the start of color calibration.

[0061] For example, when at least one of the first condition, the second condition, and the third condition is satisfied, the warm-up determination unit 212 determines that the colorimeter 500 needs to be warmed up (Yes in step S804). On the other hand, when all of the first condition, the second condition, and the third condition are not satisfied, the warm-up determination unit 212 determines that the colorimeter 500 does not need to be warmed up (No in step S804).

[0062] In this way, the warm-up determination unit 212 determines whether warm-up of the display device 300 is necessary before starting color calibration of the display device 300, based on the acquired first detected temperature. The warm-up determination unit 212 may also determine whether warm-up of the colorimeter 500 is necessary before starting color calibration of the display device 300, based on the acquired second detected temperature. The warm-up determination unit 212 may also determine that warm-up of the colorimeter 500 is necessary when the temperature difference obtained by subtracting the second detected temperature from the acquired first detected temperature is equal to or greater than a first predetermined temperature. The warm-up determination unit 212 may also determine that warm-up of the colorimeter 500 is necessary when the temperature difference obtained by subtracting the environmental temperature detected by the temperature sensor 203 from the acquired second detected temperature is less than a second predetermined temperature. This makes it possible to accurately determine whether warm-up of the colorimeter 500 is necessary based on the environmental temperature, the temperature of the display device 300, and the temperature of the colorimeter 500. Moreover, the predetermined image P1 can be displayed on the display device 300 only when the colorimeter 500 needs to be warmed up. At least one of the control device 200 and the display device 300 may be provided with the temperature sensor 203.

[0063] When it is determined that the colorimeter 500 needs to be warmed up (Yes in step S804), the warm-up determining unit 212 determines whether the display device 300 needs to be warmed up based on the fourth and fifth conditions (step S805).

[0064] (Fourth condition) The temperature difference obtained by subtracting the detected environmental temperature (room temperature) from the first detected temperature is less than a fourth predetermined temperature. It should be noted that a plurality of first temperature sensors 303 are provided. The warm-up determination unit 212 may determine the first detected temperature as the average, median, maximum, or minimum value of the temperatures detected by the first temperature sensor 303. The fourth predetermined temperature is determined in advance. For example, the fourth predetermined temperature is a temperature equal to or greater than 15 degrees Celsius and less than 25 degrees Celsius. For example, the fourth predetermined temperature may be 20 degrees Celsius. When the internal temperature of the display device 300 is sufficiently higher than the ambient temperature, the display device 300 is considered to be sufficiently warmed up. On the other hand, when the display device 300 has not been sufficiently warmed up, the first detected temperature is a value close to the ambient temperature. When the fourth condition is met, there is a possibility that the display device 300 is not sufficiently warmed up.

[0065] (Fifth condition) The time that has elapsed since the display device 300 was turned on is less than a first predetermined time. The first predetermined time is determined in advance. For example, the first predetermined time is a value that is equal to or greater than 10 minutes and less than 20 minutes. For example, the first predetermined time may be 15 minutes. When the power is turned on, the backlight (LED) of the display device 300 lights up and the temperature rises, so if a long time has passed since the power was turned on, the internal temperature of the display device 300 may be sufficiently high. Conversely, if the fifth condition is met, the time that has passed since the power was turned on is short, so the display device 300 may not be sufficiently warmed up.

[0066] Color calibration of the display device 300 needs to be performed when the luminance is stable. However, if the display device 300 is not sufficiently warmed up, the luminance of the display device 300 is not stable, and therefore the display device 300 needs to be warmed up to stabilize the luminance. Therefore, for example, when at least one of the fourth condition and the fifth condition is satisfied, the warm-up determination unit 212 determines that warm-up of the display device 300 is necessary (Yes in step S805). In this case, the warm-up determination unit 212 determines that warm-up of the display device 300 and the colorimeter 500 should be performed (step S806 → END).

[0067] On the other hand, when neither the fourth condition nor the fifth condition is satisfied, the warm-up determination unit 212 determines that warm-up of the display device 300 is unnecessary (No in step S805). In this case, the warm-up determination unit 212 determines that only the colorimeter 500 should be warmed up (step S807→END).

[0068] Also, when it is determined that warming up of the colorimeter 500 is not necessary (No in step S804), the warm-up determination unit 212 determines whether or not warming up of the display device 300 is necessary (step S807). Based on the fourth and fifth conditions, the warm-up determination unit 212 determines whether or not warming up of the display device 300 is necessary (step S808).

[0069] When at least one of the fourth condition and the fifth condition is satisfied, the warm-up determination unit 212 determines that the display device 300 needs to be warmed up (Yes in step S807). In this case, the warm-up determination unit 212 determines that only the display device 300 should be warmed up (step S809→END).

[0070] On the other hand, when neither the fourth nor the fifth condition is satisfied, the warm-up determination unit 212 determines that warm-up of the display device 300 is unnecessary (No in step S807). In this case, the warm-up determination unit 212 determines that warm-up of both the display device 300 and the colorimeter 500 is unnecessary (step S810→END).

[0071] (Phase 2) Next, an example of the second stage processing described above will be described with reference to Figs. 9, 10, and 11 (see Fig. 7). The second stage processing is processing in which, before warm-up begins, the control device 200 causes the display device 300 to display a predetermined image P1 indicating the installation position of the colorimeter 500. Fig. 9 is a diagram showing an example of the flow of the second stage processing according to the embodiment. Fig. 10 is a diagram showing an example of a first operation screen S1 according to the embodiment. Fig. 11 is a diagram showing an example of a predetermined image P1 according to the embodiment.

[0072] In the first stage of processing, when the warm-up determination unit 212 determines to warm up the colorimeter 500 (step S806 or step S807 in FIG. 8), the second stage of processing is executed. Note that in the second stage of processing, when the warm-up determination unit 212 determines to warm up only the display device 300 (step S809 in FIG. 8) or when it determines that warm-up is not necessary (step S810 in FIG. 8), the control unit 201 skips the second stage of processing.

[0073] 9 starts when the warm-up determination unit 212 (control circuit 211) determines that it is necessary to warm up the colorimeter 500. First, the control unit 201 causes the display unit 205 to display a first operation screen S1 (step S901). The first operation screen S1 is a screen displayed on the display unit 205 of the control device 200. As shown in FIG. 10, the first operation screen S1 is a screen that provides guidance on installing the colorimeter 500.

[0074] Next, the display control unit 213 (control circuit 211) determines the display position of the predetermined image P1 (step S902). The predetermined image P1 is an image showing the mounting position of the colorimeter 500 on the display device 300. In other words, the predetermined image P1 shows the position where the colorimeter 500 is to be hung using the mounting fixture 400. Then, the display control unit 213 causes the display device 300 to display the predetermined image P1 of the first specified color at the determined position (step S903). The first specified color is determined in advance.

[0075] As shown in Fig. 11, the predetermined image P1 may be a cross shape. The predetermined image P1 may also be a rectangle. The predetermined image P1 may also be a shape that is approximately the same size as the colorimeter 500 and indicates the outer shape of the colorimeter 500. The predetermined image P1 is not limited to the above-mentioned shapes. The predetermined image P1 may be any image that indicates the installation position of the colorimeter 500.

[0076] The display control unit 213 may determine a predetermined position as the display position of the predetermined image P1. For example, the display control unit 213 may determine a position where the center of the screen of the display device 300 and the center of the predetermined image P1 overlap as the display position of the predetermined image P1.

[0077] Furthermore, the display control unit 213 may determine the display position of the predetermined image P1 based on the history data LD1. For example, the display control unit 213 may determine the position where the temperature became highest during warm-up as the display position of the predetermined image P1 based on the history data LD1. For example, the display control unit 213 may determine the display position of the predetermined image P1 so that the center of the predetermined image P1 overlaps with the installation position of the first temperature sensor 303 that detected the highest temperature.

[0078] In this way, the recording processing unit 216 generates history data LD1 that indicates the history of the temperature distribution of the display device 300 during warm-up, based on the first detected temperatures detected by the multiple first temperature sensors 303. The display control unit 213 may display the predetermined image P1 at a position in the history data LD1 where the temperature became highest during warm-up. This allows the colorimeter 500 to be attached at a position where the temperature is likely to become high during warm-up. The colorimeter 500 can be warmed up efficiently.

[0079] The user attaches the colorimeter 500 at a position where the colorimeter 500 reads the predetermined image P1. For example, the user attaches the colorimeter 500 at a position where the entire aperture covers the predetermined image P1. For example, if the predetermined image P1 is a cross shape, the user attaches the colorimeter 500 so that the aperture and the intersection of the cross overlap.

[0080] When displaying the predetermined image P1, the display control unit 213 may cause the first communication unit 206 to transmit a predetermined image display command to the display device 300. The predetermined image display command includes values ​​indicating coordinates at which the predetermined image P1 is to be displayed and a value indicating a display color. Upon receiving the predetermined image display command, the pattern generation unit 312 generates a video signal for displaying the predetermined image P1. Specifically, the pattern generation unit 312 may generate a video signal for displaying the predetermined image P1 in a specified color at the coordinates specified in the command.

[0081] Alternatively, the display control unit 213 may generate a video signal for displaying a predetermined image P1 on the display device 300. The display control unit 213 generates a video signal for displaying a predetermined image P1 of a specified color at a determined position. In this case, the display control unit 213 causes the first communication unit 206 to transmit the generated video signal to the display device 300. Upon receiving the video signal, the display control unit 301 causes the display unit 205 to display the predetermined image P1 based on the received video signal.

[0082] After the display of the predetermined image P1 starts, the warm-up control unit 214 (control circuit 211) starts to determine whether or not the colorimeter 500 is attached to the position indicated by the predetermined image P1.

[0083] Specifically, the warm-up control unit 214 causes the colorimeter 500 to perform measurement (step S904). Specifically, the warm-up control unit 214 causes the second communication unit 207 to transmit a colorimeter command to the colorimeter 500. Based on the colorimeter command, the measurement processing unit 512 performs colorimeter measurement. Then, the colorimeter control unit 501 transmits the measurement values ​​obtained by colorimeter measurement to the second communication unit 207. As a result, the second communication unit 207 acquires the measurement values ​​(step S905).

[0084] The warm-up control unit 214 checks whether the acquired measurement value corresponds to the specified color (first specified color) of the predetermined image P1 (step S906). For example, if red is specified as the first specified color, the warm-up control unit 214 checks whether the measured color is red. Note that a range of measurement values ​​that are considered to correspond to the specified color is determined in advance.

[0085] If it does not match (No in step S906), the warm-up control unit 214 executes step S904 (return to step S904). If it matches (Yes in step S906), the display control unit 213 causes the display device 300 to display a predetermined image P1 in a second designated color at the determined position (step S907). The second designated color is a color different from the color previously designated (first designated color).

[0086] In step S907, when the predetermined image P1 of the second specified color is to be displayed, similarly to step S903, the display control unit 213 may cause the first communication unit 206 to transmit a predetermined image display command to the display device 300. Alternatively, the display control unit 213 may generate a video signal for displaying the predetermined image P1 of the second specified color. Then, the display control unit 213 may cause the first communication unit 206 to transmit the generated video signal to the display device 300.

[0087] Then, the warm-up control unit 214 causes the colorimeter 500 to perform measurement (step S908). The warm-up control unit 214 causes the second communication unit 207 to transmit a colorimeter command to the colorimeter 500. Based on the colorimeter command, the measurement processing unit 512 performs colorimeter measurement. Then, the colorimeter control unit 501 transmits the measurement values ​​obtained by colorimeter measurement to the second communication unit 207. As a result, the second communication unit 207 acquires the measurement values ​​(step S909).

[0088] The warm-up control unit 214 checks whether the acquired measurement value corresponds to the color (second designated color) of the specified image P1 (step S910). For example, if the second designated color is blue, the warm-up control unit 214 checks whether the measured color is blue. Note that a range of measurement values ​​that are considered to correspond to the second designated color is determined in advance.

[0089] If it does not correspond (No in step S910), the warm-up control unit 214 performs step S908 (return to step S908). If it corresponds, the warm-up control unit 214 determines that the colorimeter 500 is attached to the attachment position (step S911). Then, the warm-up control unit 214 determines to start warming up the display device 300 and the colorimeter 500 (step S912).

[0090] In this manner, the second communication unit 207 of the control device 200 outputs the colorimeter 500 and acquires from the colorimeter 500 measurement values ​​indicating color information of the measured colors. If the color information indicated by the acquired measurement values ​​corresponds to the color information of the predetermined image P1 displayed on the display device 300, the warm-up control unit 214 determines that the colorimeter 500 is attached to the installation position. This allows automatic recognition that the colorimeter 500 is attached. It also allows automatic recognition that the colorimeter 500 is attached to the appropriate position. Specifically, the display control unit 213 causes the display device 300 to sequentially display predetermined images P1 of different colors multiple times. When the second communication unit 207 acquires measurement values ​​of the corresponding color information in the order of the colors of the displayed predetermined image P1, the warm-up control unit 214 determines that the colorimeter 500 is attached to the installation position. This allows multiple checks of the attachment of the colorimeter 500. It is possible to accurately detect that the colorimeter 500 is attached to the appropriate position.

[0091] An example has been described in which the control unit 201 (control circuit 211) automatically determines whether or not the colorimeter 500 has been attached. However, the input device 204 may receive an input indicating that the attachment of the colorimeter 500 has been completed. When the input device 204 receives a user operation indicating that the attachment of the colorimeter 500 has been completed, the warm-up control unit 214 may determine to start warming up the display device 300 and the colorimeter 500.

[0092] (Third Stage) Next, an example of the above-mentioned third stage processing will be described with reference to FIGS. 12 to 15 (see FIG. 7). The third stage processing is processing from the start of warming up the display device 300 to the end of warming up. FIG. 12 is a diagram showing an example of the flow of the warming up processing of the display device 300 and the colorimeter 500 according to the embodiment. FIG. 13 is a diagram showing an example of the second operation screen S2 according to the embodiment. FIG. 14 is a diagram showing an example of the flow of the warming up processing of only the display device 300 according to the embodiment. FIG. 15 is a diagram showing an example of the flow of the warming up processing of only the colorimeter 500 according to the embodiment.

[0093] (1. Warm-up process of the display device 300 and the colorimeter 500) First, an example of the flow of the warm-up process of the display device 300 and the colorimeter 500 according to the embodiment will be described with reference to Fig. 12. Fig. 12 starts at the point in time when the warm-up determination unit 212 determines to warm up the display device 300 and the colorimeter 500 in the first stage of processing (step S806 in Fig. 8).

[0094] First, the control unit 201 causes the display unit 205 to display the second operation screen S2 (step S1201). The second operation screen S2 is a screen displayed on the display unit 205 of the control device 200. FIG. 13 shows an example of the second operation screen S2. The second operation screen S2 is a screen that provides information about warm-up. For example, the control unit 201 may display the elapsed time since the start of warm-up on the second operation screen S2.

[0095] Then, the warm-up control unit 214 causes the display device 300 to perform a warm-up operation (step S1202). The warm-up control unit 214 causes the first communication unit 206 to transmit a warm-up start instruction command to the display device 300. When the warm-up start instruction command is received, the command processing unit 313 starts the warm-up operation of the display device 300.

[0096] That is, when the warm-up determination unit 212 determines that both the colorimeter 500 and the display device 300 need to be warmed up, and when it determines that the colorimeter 500 has been attached to the attachment position, the warm-up control unit 214 starts warming up the display device 300. This makes it possible to start warming up the display device 300 only after the colorimeter 500 has been securely attached to the display device 300.

[0097] Warming up is an operation that consumes power to increase the temperature inside the display device 300. For example, the command processing unit 313 executes a predetermined warming up operation. During warming up, the command processing unit 313 may cause the display panel 305 to display an image based on a video signal for playback during warming up that is stored in the display storage unit 302. Furthermore, during warming up, the control unit 201 may supply a video signal for the video to be played during warming up to the display device 300 (display communication unit 307). In this case, the display control unit 301 causes the display panel 305 to display an image based on the supplied video signal.

[0098] The warm-up heats the inside of the display device 300. When the colorimeter 500 is attached, the heat emitted by the display device 300 also warms the colorimeter 500.

[0099] Then, based on the output of the temperature sensor 203, the warm-up control unit 214 (control circuit 211) detects the environmental temperature (room temperature) (step S1203). The warm-up control unit 214 also causes the display device 300 and the colorimeter 500 to measure the temperature (step S1204). Specifically, the warm-up control unit 214 causes the first communication unit 206 to transmit a temperature detection command using the first temperature sensor 303 to the display device 300. The warm-up control unit 214 also causes the second communication unit 207 to transmit a temperature detection command using the second temperature sensor 503 to the colorimeter 500.

[0100] Upon receiving the temperature detection command, the command processing unit 313 detects the temperature based on the output of each first temperature sensor 303. Then, the command processing unit 313 causes the display communication unit 307 to transmit the detected temperature to the control device 200. Furthermore, upon receiving the temperature detection command, the colorimetry control unit 501 operates the second temperature sensor 503 to detect the temperature. Then, the colorimetry control unit 501 causes the colorimetry communication unit 506 to transmit the detected temperature to the control device 200.

[0101] As a result, the control device 200 acquires the temperatures measured by the display device 300 and the colorimeter 500 (step S1205). Specifically, the first communication unit 206 communicates with the display device 300 including the first temperature sensor 303, and acquires a first detected temperature indicating the temperature of the display device 300 detected by the first temperature sensor 303. Furthermore, the second communication unit 207 communicates with the colorimeter 500 including the second temperature sensor 503, and acquires a second detected temperature indicating the temperature of the colorimeter 500 detected by the second temperature sensor 503. Note that the recording processing unit 216 may non-volatilely store the acquired first detected temperature and second detected temperature in the storage unit 202 as history data LD1.

[0102] Then, the warm-up control unit 214 determines whether or not it is necessary to continue warming up the display device 300 and the colorimeter 500 (step S1206). When at least one of the above-described first condition, second condition, third condition, fourth condition, and fifth condition is met, the warm-up control unit 214 may determine that it is necessary to continue warming up the display device 300 and the colorimeter 500. On the other hand, when all of the above-described first condition, second condition, third condition, fourth condition, and fifth condition are not met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the colorimeter 500.

[0103] When at least one of the above-mentioned first condition, second condition, third condition, fourth condition, and fifth condition is met but a predetermined sixth condition is not met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the display device 300 and the colorimeter 500, and when the sixth condition is met, the warm-up control unit 214 may determine that it is necessary to continue warming up the display device 300 and the colorimeter 500.

[0104] (6th condition) The time elapsed since the start of warm-up is less than the second predetermined time. The second predetermined time is determined in advance. For example, the second predetermined time is a value greater than or equal to 20 minutes and less than 40 minutes. The second predetermined time is a time sufficient for warming up the display device 300. For example, the second predetermined time may be 30 minutes. The second predetermined time may differ depending on the model of the display device 300. The sixth condition can prevent the warming up from continuing for too long, beyond the second predetermined time.

[0105] When it is determined that continued warm-up is necessary (Yes in step S1206), the warm-up control unit 214 executes step S1202 (return to step S1202). On the other hand, when it is determined that continued warm-up is not necessary (No in step S1206), the warm-up control unit 214 ends the warm-up of the display device 300 (step S1207). For example, the warm-up control unit 214 causes the first communication unit 206 to transmit a warm-up end command to the display device 300. Upon receiving the warm-up end command, for example, the command processing unit 313 ends the display of the video that is displayed during warm-up.

[0106] Upon completion of the warm-up, the control unit 201 causes the display unit 205 to display the completion of the warm-up (step S1208 → End). For example, the control unit 201 may cause the display unit 205 to display a message such as "Warm-up completed" instead of the second operation screen S2. The control unit 201 may also cause the display device 300 (display panel 305) to display the completion of the warm-up.

[0107] (2. Warm-up process for display device 300 only) First, an example of the flow of the warm-up process of the display device 300 and the colorimeter 500 according to the embodiment will be described with reference to Fig. 14. Fig. 14 starts at the point in time when the warm-up determination unit 212 determines that warm-up of the colorimeter 500 is not necessary and that warm-up of the display device 300 is necessary in the first stage of processing (step S809 in Fig. 8).

[0108] First, the control unit 201 causes the display unit 205 to display a message instructing that only the display device 300 be warmed up (step S1401). Then, the warm-up control unit 214 causes the display device 300 to perform a warm-up operation (step S1402). The warm-up control unit 214 causes the first communication unit 206 to transmit a warm-up start instruction command to the display device 300. When the warm-up start instruction command is received, the command processing unit 313 starts the warm-up operation of the display device 300. The contents of the warm-up operation may be the same as those described with reference to FIG. 12. The inside of the display device 300 is warmed up by the warm-up.

[0109] On the other hand, when the warm-up determination unit 212 determines that only the display device 300 needs to be warmed up, the warm-up control unit 214 starts warming up the display device 300. At this time, unlike when the colorimeter 500 also needs to be warmed up, the display control unit 213 does not cause the display device 300 to display the predetermined image P1. This makes it possible to prevent the predetermined image P1 from being displayed when warming up the colorimeter 500 is not necessary. This makes it possible to eliminate unnecessary displays and processes. This makes it possible to quickly warm up the display device 300.

[0110] Then, the warm-up control unit 214 (control circuit 211) detects the environmental temperature (room temperature) based on the output of the temperature sensor 203 (step S1403). The warm-up control unit 214 also causes the display device 300 to measure the temperature (step S1404). Specifically, the warm-up control unit 214 causes the first communication unit 206 to transmit a temperature detection command using the first temperature sensor 303 to the display device 300. Upon receiving the temperature detection command, the command processing unit 313 detects the temperature based on the output of each first temperature sensor 303. Then, the command processing unit 313 causes the display communication unit 307 to transmit the detected temperature to the control device 200.

[0111] As a result, the control device 200 acquires the temperature measured by the display device 300 (step S1405). Note that the record processing unit 216 may store the acquired first detected temperature in a non-volatile manner in the storage unit 202 as history data LD1.

[0112] Then, the warm-up control unit 214 determines whether or not it is necessary to continue warming up the display device 300 (step S1406). When at least one of the fourth condition and the fifth condition described above is met, the warm-up control unit 214 may determine that it is necessary to continue warming up the display device 300. On the other hand, when neither the fourth condition nor the fifth condition described above is met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the colorimeter 500. When at least one of the fourth condition and the fifth condition described above is met but the sixth condition described above is not met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the display device 300.

[0113] When it is determined that continued warm-up is necessary (Yes in step S1406), the warm-up control unit 214 executes step S1402 (return to step S1402). On the other hand, when it is determined that continued warm-up is not necessary (No in step S1406), the warm-up control unit 214 ends the warm-up of the display device 300 (step S1407). For example, the warm-up control unit 214 causes the first communication unit 206 to transmit a warm-up end command to the display device 300. Upon receiving the warm-up end command, for example, the command processing unit 313 ends the display of the video that is displayed during warm-up.

[0114] Upon completion of the warm-up, the control unit 201 causes the display unit 205 to display the completion of the warm-up (step S1408 → End). For example, the control unit 201 may cause the display unit 205 to display a message such as "Warm-up completed." The control unit 201 may also cause the display unit 300 (display panel 305) to display the completion of the warm-up of the display device 300.

[0115] (3. Warm-up process for spectrophotometer 500 only) First, an example of the flow of the warm-up process for only the colorimeter 500 according to the embodiment will be described with reference to Fig. 15. The start of Fig. 15 is the point in time in the first stage of processing when the warm-up determination unit 212 determines that warm-up of the colorimeter 500 is necessary, but that warm-up of the display device 300 is not necessary (step S807 in Fig. 8).

[0116] First, the control unit 201 causes the display unit 205 to display the second operation screen S2 (step S1501, see FIG. 13). Here, the warm-up control unit 214 does not cause the display device 300 to perform a warm-up operation (step S1502). In other words, when only the colorimeter 500 is to be warmed up, the warm-up control unit 214 does not transmit a warm-up start instruction command to the display device 300.

[0117] When the warm-up determination unit 212 determines that only the colorimeter 500 needs to be warmed up, the display control unit 213 causes the display device 300 to display a predetermined image P1. However, even if it is determined that the colorimeter 500 has been attached to the attachment position, the warm-up control unit 214 does not cause the display device 300 to start warming up. If the display device 300 is sufficiently warmed up, the warm-up operation of the display device 300 can be omitted. The colorimeter 500 can be warmed up using the heat stored in the display device 300.

[0118] When the warm-up determination unit 212 determines that the colorimeter 500 needs to be warmed up, but determines that the display device 300 does not need to be warmed up, the display device 300 is sufficiently warmed up. The display device 300 is warmed up to the extent that it can warm up the colorimeter 500. The temperature of the colorimeter 500 in contact with the display device 300 gradually rises. The heat stored in the display device 300 also warms up the colorimeter 500.

[0119] Then, the warm-up control unit 214 (control circuit 211) detects the environmental temperature (room temperature) based on the output of the temperature sensor 203 (step S1503). The warm-up control unit 214 also causes the colorimeter 500 to measure the temperature (step S1504). Specifically, the warm-up control unit 214 causes the second communication unit 207 to transmit a temperature detection command using the second temperature sensor 503 to the display device 300. Upon receiving the temperature detection command, the colorimetric control unit 501 operates the second temperature sensor 503 to detect the temperature. Then, the colorimetric control unit 501 causes the colorimetric communication unit 506 to transmit the detected temperature to the control device 200.

[0120] As a result, the control device 200 acquires the temperature measured by the colorimeter 500 (step S1505). Specifically, the second communication unit 207 communicates with the colorimeter 500 equipped with the second temperature sensor 503, and acquires a second detected temperature indicating the temperature of the colorimeter 500 detected by the second temperature sensor 503. Note that the recording processing unit 216 may store the acquired second detected temperature in the storage unit 202 in a non-volatile manner as history data LD1.

[0121] Then, the warm-up control unit 214 determines whether or not it is necessary to continue warming up the colorimeter 500 (step S1506). When at least one of the above-described first condition, second condition, and third condition is met, the warm-up control unit 214 may determine that it is necessary to continue warming up the colorimeter 500. On the other hand, when all of the above-described first condition, second condition, and third condition are not met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the colorimeter 500. When at least one of the above-described first condition, second condition, and third condition is met but the above-described sixth condition is not met, the warm-up control unit 214 may determine that it is not necessary to continue warming up the colorimeter 500.

[0122] When it is determined that continued warm-up is necessary (Yes in step S1506), the warm-up control unit 214 executes step S1503 (return to step S1503). On the other hand, when the warm-up control unit 214 determines that continued warm-up is not necessary (No in step S1506), the control unit 201 causes the display unit 205 to display the completion of warm-up of the colorimeter 500 (step S1507 → end). For example, the control unit 201 may cause the display unit 205 to display a message such as "Warm-up completed." The control unit 201 may also cause the display device 300 (display panel 305) to display the completion of warm-up.

[0123] (Fourth Stage) Next, an example of the fourth stage processing described above (see FIG. 7) will be described with reference to FIGS. 16 to 18. The fourth stage is a stage in which the control device 200 executes color calibration processing of the display device 300 after warm-up is complete. FIG. 16 is a diagram showing an example of the flow of the fourth stage processing according to the embodiment. FIG. 17 is a diagram showing an example of a third operation screen S3 according to the embodiment. FIG. 18 is a diagram showing an example of a fourth operation screen S4 according to the embodiment.

[0124] The start of Figure 16 is the point at which the warm-up control unit 214 ends warm-up in the third stage processing, or the point at which the warm-up determination unit 212 determines not to warm up in the first stage processing (step S810 in Figure 8).

[0125] First, the control unit 201 displays the third operation screen S3 on the display unit 205 (step S1601). Fig. 16 is a diagram showing an example of the third operation screen S3. The third operation screen S3 is a screen that guides the user to initialize (calibrate) the colorimeter 500. The colorimeter 500 is initialized in a warmed state.

[0126] The details of the initialization process (calibration process) of the colorimeter 500 are determined depending on the model of the colorimeter 500. During the initialization process, the colorimeter 500 reads a prepared initialization reference section 507 (e.g., a white reference board). The third operation screen S3 in FIG. 17 shows an example of a screen for prompting the user to execute the initialization process of the colorimeter 500. For example, the user operates the colorimeter 500 to set the measurement section 505 to a state in which it reads the initialization reference section 507. After completing the setting, the user operates the initialization start button B1. When the initialization start button B1 is operated, the calibration execution section 217 sends an initialization start command to the colorimeter 500.

[0127] The colorimetry storage unit 502 stores the initialization software in a non-volatile manner. Upon receiving an initialization start command, the colorimetry control unit 501 initializes the colorimeter 500 (step S1602). For example, the colorimetry control unit 501 (measurement processing unit 512) executes programs and commands included in the initialization software. This causes the colorimetry control unit 501 to calibrate the colorimeter 500. For example, the colorimetry control unit 501 may turn on the lamp 504 and obtain a correction value for adjusting the measurement value obtained when the initialization reference unit 507 is read to a predetermined reference value. In this case, the colorimetry control unit 501 adjusts the measurement value with the correction value and outputs the result as the measurement value.

[0128] When receiving a notification of the completion of initialization from the colorimeter 500, the control unit 201 displays a fourth operation screen S4 on the display unit 205 (step S1603). Fig. 18 shows an example of the fourth operation screen S4. The fourth operation screen S4 is a screen that guides the installation position of the colorimeter 500 during color calibration.

[0129] The calibration execution unit 217 (control circuit 211) determines the display position of the attachment position image (step S1604). The attachment position image is an image showing the attachment position of the colorimeter 500 on the display device 300 during color calibration. Then, the calibration execution unit 217 causes the display device 300 to display the attachment position image of the first specified color at the determined position (step S1605).

[0130] The user installs the colorimeter 500 in a position where the colorimeter 500 reads the installation position image. For example, the user installs the colorimeter 500 in a position where the entire aperture covers the installation position image. The shape and size of the installation position image may be the same as the predetermined image P1 displayed before warming up. The installation position image may be a cross or a rectangle.

[0131] The calibration execution unit 217 may determine a predetermined position as the display position of the attachment position image for color calibration. For example, the calibration execution unit 217 may determine a position where the center of the screen of the display device 300 and the center of the attachment position image overlap as the display position of the attachment position image.

[0132] Furthermore, the calibration execution unit 217 may determine the display position of the attachment position image based on the history data LD1. For example, the calibration execution unit 217 may determine, in the history data LD1, a position where no maximum temperature was recorded during warm-up and color calibration as the display position of the attachment position image for color calibration. Specifically, the calibration execution unit 217 may determine the display position of the attachment position image so that the aperture of the colorimeter 500 overlaps with the installation position of the first temperature sensor 303 where no maximum temperature was recorded.

[0133] In this way, based on the first detected temperatures detected by the multiple first temperature sensors 303, the recording processing unit 216 includes in the history data LD1 the history of the temperature distribution of the display device 300 during color calibration. The calibration execution unit 217 displays an installation position image indicating the installation position of the colorimeter 500 during color calibration at a position in the history data LD1 where no maximum temperature was recorded during warm-up and color calibration, or at a predetermined position. This makes it possible to show the user the position where the colorimeter 500 should be installed during color calibration. Since the colorimeter 500 is installed at a position where there are no problems with measurement, the occurrence of color calibration failures can be reduced. Furthermore, since it is possible to recommend installing the colorimeter 500 at a position where no maximum temperature was recorded, the colorimeter 500 can be installed at a position where the temperature of the colorimeter 500 does not change significantly. Since temperature changes in the colorimeter 500 are reduced, color and luminance can be measured accurately. Furthermore, it is possible to prevent the colorimeter 500 from having to be re-initialized and the color calibration from having to be redone.

[0134] When displaying an attachment position image for color calibration, the calibration execution unit 217 may cause the first communication unit 206 to transmit an attachment position image display command to the display device 300. The attachment position image display command includes values ​​indicating coordinates at which the attachment position image is to be displayed and a value indicating a display color. Upon receiving the attachment position image display command, the pattern generation unit 312 generates a video signal for displaying the attachment position image. The display control unit 301 may generate a video signal for displaying the attachment position image in the specified color (first specified color) at the coordinates specified in the command.

[0135] Alternatively, the calibration execution unit 217 may generate a video signal that displays an attachment position image. The calibration execution unit 217 generates a video signal that displays an attachment position image in a first specified color at a determined position. In this case, the calibration execution unit 217 causes the first communication unit 206 to transmit the generated video signal toward the display device 300. Upon receiving the video signal, the display control unit 301 causes the display panel 305 to display an attachment position image based on the received video signal.

[0136] After the installation position image starts to be displayed, the calibration execution unit 217 (control circuit 211) starts to determine whether or not the colorimeter 500 is installed at the position indicated by the installation position image.

[0137] Specifically, the calibration execution unit 217 causes the colorimeter 500 to perform measurement (step S1606). Specifically, the calibration execution unit 217 causes the second communication unit 207 to transmit a colorimeter command to the colorimeter 500. Based on the colorimeter command, the measurement processing unit 512 performs colorimeter measurement. Then, the colorimeter control unit 501 transmits the measurement values ​​obtained by colorimeter measurement to the second communication unit 207. As a result, the second communication unit 207 acquires the measurement values ​​(step S1607).

[0138] The calibration execution unit 217 checks whether the acquired measurement value corresponds to the color (first specified color) of the specified attachment position image (step S1608). For example, if the first specified color is red, the calibration execution unit 217 checks whether the measured color is red.

[0139] If it does not match (No in step S1608), the calibration execution unit 217 executes step S1606 (return to step S1606). If it matches, the display control unit 213 causes the display device 300 to display an attachment position image in the second specified color at the determined position (step S1609). The second specified color is a color different from the color specified immediately before (first specified color).

[0140] In step S1609, when the attachment position image of the second specified color is displayed, similarly to step S903, the calibration execution unit 217 may cause the first communication unit 206 to transmit an attachment position image display command to the display device 300. Alternatively, the calibration execution unit 217 may generate a video signal for displaying the attachment position image of the second specified color. Then, the calibration execution unit 217 may cause the first communication unit 206 to transmit the generated video signal to the display device 300.

[0141] Then, the calibration execution unit 217 causes the colorimeter 500 to perform measurement (step S1610). The calibration execution unit 217 causes the second communication unit 207 to transmit a colorimeter command to the colorimeter 500. Based on the colorimeter command, the measurement processing unit 512 performs colorimeter measurement. Then, the colorimeter control unit 501 transmits the measurement values ​​obtained by colorimeter measurement to the second communication unit 207. As a result, the second communication unit 207 acquires the measurement values ​​(step S1611).

[0142] The calibration execution unit 217 checks whether the acquired measurement value corresponds to the color (second specified color) of the specified attachment position image (step S1612). For example, if the second specified color is green, the calibration execution unit 217 checks whether the measured color is green.

[0143] If it does not match (No in step S1612), the calibration execution unit 217 executes step S1610 (return to step S1610). If it matches (Yes in step S1612), the calibration execution unit 217 determines that the colorimeter 500 is attached to the attachment position (step S1613). Then, the calibration execution unit 217 starts color calibration of the display device 300 (step S1614 → END).

[0144] In this way, after starting the warm-up of the display device 300, the warm-up control unit 214 determines whether it is necessary to continue the warm-up of the display device 300 based on the first detected temperature, and determines whether it is necessary to continue the warm-up of the colorimeter 500 based on the second detected temperature. When it determines that it is not necessary to continue the warm-up of the display device 300 and the colorimeter 500, the warm-up control unit 214 ends the warm-up of the colorimeter 500 and the display device 300. After the warm-up is completed, the calibration execution unit 217 initializes the colorimeter 500 and then starts color calibration of the display device 300. This allows the colorimeter 500 to be initialized after it has sufficiently warmed up. Because the colorimeter 500 is sufficiently warmed up, it is possible to suppress a temperature rise in the colorimeter 500 during color calibration. This allows accurate measurement of color and luminance. Furthermore, it is possible to suppress a temperature change in the colorimeter 500 that would require re-initialization during color calibration. This prevents the need to redo color calibration.

[0145] An example has been described in which the control unit 201 (control circuit 211) automatically determines whether or not the colorimeter 500 has been attached. However, the input device 204 may receive an input indicating that the attachment of the colorimeter 500 has been completed. When the input device 204 receives a user operation indicating that the attachment of the colorimeter 500 has been completed, the calibration execution unit 217 may determine to start color calibration of the display device 300 and the colorimeter 500.

[0146] In the color calibration process, the calibration execution unit 217 performs brightness adjustment, color gamut adjustment, color temperature adjustment, and gamma adjustment. During brightness adjustment, the calibration execution unit 217 displays a brightness adjustment image on the display device 300. The colorimeter 500 measures the brightness of the brightness adjustment image. The calibration execution unit 217 may adjust the amount of light from the backlight so that the brightness reaches a target value. During color gamut adjustment, the calibration execution unit 217 displays, for example, a red patch image, a green patch image, and a blue patch image on the display device 300. The colorimeter 500 reads the patch images for each color. The calibration execution unit 217 sets a correction value for controlling the transmittance of the LCD panel so that the brightness of each patch image reaches a target value. During color temperature adjustment, the calibration execution unit 217 displays a white image on the display device 300. The colorimeter 500 reads the white image. The calibration execution unit 217 sets a correction value for controlling the transmittance of each color so that the color temperature of the white image reaches a target value. During gamma adjustment, the calibration execution unit 217 displays multiple images with different luminance on the display device 300. The colorimeter 500 reads each image. The calibration execution unit 217 sets a correction value according to the luminance level so that changes in display luminance describe the target gamma characteristics (gamma curve).

[0147] Note that the items adjusted by color calibration are not limited to those described above, and the calibration execution unit 217 may also adjust other items.

[0148] The present disclosure also discloses a display device control system 100. Specifically, the display device control system 100 includes a display device 300 and a control device 200. When color calibration of the display device 300 is performed, a warm-up determination unit 212 determines whether warm-up of the colorimeter 500 is necessary based on predetermined conditions. When the warm-up determination unit 212 determines that warm-up of the colorimeter 500 is necessary, the display control unit 213 causes the display device 300 to display a predetermined image P1 indicating the installation position of the colorimeter 500 on the display device 300. When it is determined that the colorimeter 500 has been installed in the installation position, the warm-up control unit 214 causes the display device 300 to start warming up of the colorimeter 500.

[0149] The present disclosure also discloses a control method for the control device 200. Specifically, the control method for the control device 200 includes, when performing color calibration of the display device 300, determining whether or not warming up of the colorimeter 500 is necessary based on predetermined conditions, causing the display device 300 to display a predetermined image P1 indicating the installation position of the colorimeter 500 on the display device 300 when it is determined that warming up of the colorimeter 500 is necessary, determining whether or not the colorimeter 500 is installed at the installation position, and starting the warming up of the display device 300 when it is determined that the colorimeter 500 is installed at the installation position.

[0150] According to the display device control system 100 and the control method of the control device 200, the colorimeter 500 can be warmed up using the display device 300. The colorimeter 500 can be sufficiently warmed up before color calibration starts. Even if color calibration is started after warm-up is complete and the colorimeter 500 receives heat from the display device 300 during color calibration, a large temperature change in the colorimeter 500 can be suppressed. Therefore, the color of the image displayed by the display device 300 can be accurately measured during color calibration. Furthermore, it is possible to suppress the need to re-initialize the colorimeter 500 due to a large temperature change in the colorimeter 500. This prevents the need to redo color calibration. [Explanation of symbols]

[0151] 100 Display device control system, 200 Control device, 201 Control unit, 202 Memory unit, 203 Temperature sensor, 204 Input device, 205 Display unit, 211 Control circuit, 212 Warm-up determination unit, 213 Display control unit, 214 Warm-up control unit, 216 Recording processing unit, 217 Calibration execution unit, 300 Display device, 301 Display control unit, 302 Display memory unit, 303 First temperature sensor, 304 Operation unit, 305 Display panel, 306 Display drive unit, 307 Display communication unit, 311 Display control circuit, 312 Pattern generation unit, 313 Command processing unit, 400 Mounting fixture, 500 Colorimeter, 501 Colorimetric control unit, 502 Colorimetric memory unit, 503 Second temperature sensor, 504 Lamp, 505 Measurement unit, 506 Colorimetric communication unit, 511 Colorimetric control circuit, 512 Measurement processing section, B1 initialization start button, CP center point, CS1 calibration software, LD1 history data, P1 specified image, S1 first operation screen, S2 second operation screen, S3 third operation screen, S4 fourth operation screen

Claims

1. a warm-up determination unit that determines whether or not warm-up of the colorimeter is necessary based on at least the temperature of the colorimeter when performing color calibration of the display device; a display control unit that, when the warm-up determination unit determines that the colorimeter needs to be warmed up, causes the display device to display a predetermined image that indicates an attachment position of the colorimeter on the display device; a warm-up control unit that, when it is determined that the colorimeter is attached to the attachment position, starts warming up the colorimeter using the display device.

2. a first communication unit that communicates with the display device having a first temperature sensor and acquires a first detected temperature that indicates a temperature of the display device detected by the first temperature sensor; a second communication unit that communicates with the colorimeter having a second temperature sensor and acquires a second detected temperature that indicates the temperature of the colorimeter detected by the second temperature sensor, The warm-up determination unit determining whether or not the display device needs to be warmed up based on at least the acquired first detected temperature; determining whether or not warming up of the colorimeter is necessary based on at least the acquired second detected temperature; The control device according to claim 1 .

3. the warm-up determination unit determines that warm-up of the colorimeter is necessary when determining that at least one of a first condition, a second condition, and a third condition is satisfied based on the acquired first detected temperature and the acquired second detected temperature; the first condition is satisfied when a temperature difference obtained by subtracting the second detected temperature from the first detected temperature is equal to or greater than a first predetermined temperature; the second condition is satisfied when a temperature difference obtained by subtracting an environmental temperature detected by a predetermined temperature sensor from the acquired second detected temperature is less than a second predetermined temperature; the third condition is satisfied when the acquired second detected temperature is lower than a third predetermined temperature. The control device according to claim 2 .

4. The control device according to claim 3 , wherein at least one of the control device and the display device includes the predetermined temperature sensor.

5. When the warm-up determination unit determines that both the colorimeter and the display device need to be warmed up, 5. The control device according to claim 3, wherein the warm-up control unit starts warming up the display device when it is determined that the colorimeter is attached to the attachment position.

6. When the warm-up determination unit determines that only the display device needs to be warmed up, the warm-up control unit starts warming up the display device, The control device according to claim 2 , wherein the display control unit prevents the predetermined image from being displayed on the display device.

7. the second communication unit acquires, from the colorimeter, measurement values ​​indicating color information of the colors output and measured by the colorimeter; The control device according to any one of claims 2 to 6, wherein the warm-up control unit determines that the colorimeter is attached to the attachment position when the color information indicated by the acquired measurement value corresponds to the color information of the specified image displayed on the display device.

8. the display control unit causes the display device to sequentially display the predetermined images having different colors multiple times; The control device according to claim 7, wherein the warm-up control unit determines that the colorimeter is attached to the attachment position when the second communication unit acquires the measurement values ​​of the corresponding color information in the color order of the displayed predetermined image.

9. the warm-up control unit, after starting the warm-up of the display device, determines the necessity of continuing the warm-up of the display device based on the first detected temperature, and determines the necessity of continuing the warm-up of the colorimeter based on the second detected temperature, and ends the warm-up of the colorimeter and the display device when it determines that it is not necessary to continue the warm-up of the display device and the colorimeter; 9. The control device according to claim 2, further comprising: a calibration execution unit that, after warm-up is complete, initializes the colorimeter and then starts color calibration of the display device.

10. a recording processing unit that generates history data indicating a history of a temperature distribution of the display device during a warm-up process based on the first detected temperatures detected by the plurality of first temperature sensors; The control device according to claim 2 , wherein the display control unit displays the predetermined image at a position where the temperature became highest during warm-up in the history data before the warm-up starts.

11. the recording processing unit includes a history of temperature distribution of the display device during color calibration in the history data based on the first detected temperatures detected by the plurality of first temperature sensors; 11. The control device according to claim 10, further comprising a calibration execution unit that displays an installation position image indicating the installation position of the colorimeter during color calibration at a position in the history data where no maximum temperature was recorded during warm-up and color calibration, or at a predetermined position, after warm-up has ended and before color calibration begins.

12. A display device and a control device are provided, a warm-up determination unit that determines whether or not warm-up of the colorimeter is necessary based on at least a temperature of the colorimeter when performing color calibration of the display device; a display control unit that, when the warm-up determination unit determines that the colorimeter needs to be warmed up, causes the display device to display a predetermined image that indicates an attachment position of the colorimeter on the display device; a warm-up control unit that, when it is determined that the colorimeter is attached to the attachment position, starts warming up the colorimeter using the display device.

13. determining whether or not warming up of the colorimeter is necessary based on at least the temperature of the colorimeter when performing color calibration of the display device; When it is determined that the colorimeter needs to be warmed up, a predetermined image indicating the installation position of the colorimeter on the display device is displayed on the display device; determining whether the colorimeter is attached to the attachment position; a control method for a control device, the control device including: starting a warm-up of the colorimeter using the display device when it is determined that the colorimeter is attached to the attachment position.

Images