JP2024021624A - Control method for display unit, control method for display system, display unit, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly convenient control method for a display unit.

SOLUTION: A control method for a first projector 5 as a display unit includes: receiving a first operation to turn off the power of the first projector 5 as the display unit; when receiving the first operation, starting adjustment of a pattern image as a display video from the first projector 5; and when the adjustment is completed, turning off the power of the first projector 5.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a method for controlling a display device, a method for controlling a display system, a display device, and a program.

2. Description of the Related Art Display devices are known that are installed in a conference room or the like, to which a user's computer or the like is connected and display images of the user's presentation on a large screen such as a screen.
As such a display device, a display device in Patent Document 1 is disclosed that automatically corrects an image after the display device is powered on. In the display device of Patent Document 1, in order to shorten the time required for image correction, a camera captures an image for correction when a predetermined time has elapsed according to the characteristics of the light source after the light source is turned on. By doing so, it is possible to reduce the time required to correct images.

JP 2015-22043 Publication

However, once the image correction is started, the use of the display device is restricted until the image correction is completed, which may impair the user's convenience of the display device. For example, even if the user wanted to display the image immediately, the user had to wait until the image was corrected.

A method for controlling a display device according to one aspect of the present invention includes accepting a first operation to turn off the power of the display device, and starting adjusting a display image of the display device when the first operation is received. and turning off the power when the adjustment is completed.

A method for controlling a display system according to one aspect of the present invention includes accepting a first operation of turning off the power of a first display device; starting adjustment of the display image and adjustment of the display image of the second display device; and turning off the power of the first display device when the adjustment of the first display device is completed; and, when the adjustment of the second display device is completed, turning off the power of the second display device.

A display device according to one aspect of the present invention includes: a display panel; a communication circuit or a switch that accepts a first operation of cutting off power supply to the display panel; The device includes a first circuit that adjusts the image displayed on the panel, and a second circuit that turns off the power supply when the adjustment is completed.

A program according to one aspect of the present invention is configured to receive information indicating a first operation of turning off power to a display device, and to send a message to the display device when the information indicating the first operation is received. The computer is caused to start adjusting the displayed image, and to turn off the power when the adjustment is completed.

1 is a schematic diagram showing an installation example of the multi-projection system of Embodiment 1. FIG. FIG. 1 is a block diagram showing a configuration example of a multi-projection system. Flowchart showing the automatic adjustment procedure. Flowchart showing the setting procedure. An explanatory diagram of a setting menu screen. An explanatory diagram of an automatic adjustment frequency setting screen. FIG. 3 is a block diagram showing a configuration example of a multi-projection system according to a second embodiment. FIG. 7 is a block diagram showing a configuration example of a projector according to a third embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
1. Embodiment 1
1.1. Configuration of Multi-Projection System The configuration of the multi-projection system 1 as a display system will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic diagram showing an example of the installation of a multi-projection system according to this embodiment, and FIG. 2 is a block diagram showing an example of the configuration of the multi-projection system according to this embodiment.

As shown in FIG. 1, the multi-projection system 1 includes a first projector 5 as a display device or a first display device, and a second projector 6 as a second display device. The multi-projection system 1 includes an image signal output device 2 such as a user's computer, a screen 3 for displaying images projected by a first projector 5 and a second projector 6, a MIDI (Musical Instrument Digital Interface) cable, a computer cable, etc. A transmission cable 4, an antenna 7a for connecting to an access point 8a of a wireless LAN (Local Area Network), and the like are connected or arranged.

The image signal output device 2 outputs image signals to the first projector 5 and the second projector 6. In this embodiment, the image signal output device 2 is a user's computer. Note that the image signal output device 2 may be a smartphone, an STB (Set Top Box), a DVD (Digital Versatile Disc) player, or a media server on a network connected via the access point 8a. Further, the image signal from the image signal output device 2 may be sent to the first projector 5 and the second projector 6 via a wireless LAN (Local Area Network) or a wired LAN.

This multi-projection system 1 is a system that displays high-resolution, large-screen images by tiling display. The multi-projection system 1 projects the image light of the divided image 5A displayed by the first projector 5 and the image light of the divided image 6A displayed by the second projector 6 onto the screen 3 in parallel in the horizontal direction, By overlapping the parts on the screen 3, the entire image 11 is formed and displayed.
In addition, in this embodiment, the multi-projection system 1 is illustrated in which the divided image 5A of the first projector 5 and the divided image 6A of the second projector 6 are projected in parallel in the horizontal direction, but the present invention is not limited to this. For example, the entire image 11 may be displayed by arranging divided images from three or more projectors in parallel in the horizontal or vertical direction.

As shown in FIG. 2, in this embodiment, the first projector 5 and the second projector 6 have the same configuration. Note that when automatic adjustment is performed, one of the projectors becomes the primary projector and the remaining projectors become secondary projectors. Which projector is to be designated as the primary projector may be set in advance, or may be programmed such that the projector that is powered on first is designated as the primary projector. The primary projector functions as a computer that controls the secondary projector and controls automatic adjustment as the multi-projection system 1. Automatic adjustment is an example of adjustment. Further, automatic adjustment is an example of calibration.

The first projector 5 and the second projector 6 each include a power supply section 13, an image signal processing section 14, a projection section 20, an automatic adjustment section 15 as a first circuit, a camera 16, a storage section 17, an operation reception section 18, It includes a remote control 19, a communication section 7, and a control section 10 as a second circuit.

The power supply section 13 has a main power source and a sub power source. The sub power supply mainly supplies power to the projection unit 20 while the power is in the ON state, and cuts off the power supply to the projection unit 20 when the power changes to the OFF state. On the other hand, even when the sub power source is OFF, the main power source remains ON, and supplies power to the control unit 10, the operation receiving unit 18, and the communication unit 7. The first projector 5 and the second projector 6 are in a standby state while the power is turned off.

The image signal processing section 14 includes an image correction section 14a and a drive signal generation section 14b. The image correction section 14a adjusts the image signal based on the adjustment parameters stored in the storage section 17. The drive signal generation section 14b outputs the adjusted image signal and a drive signal including a synchronization signal to the projection section 20.

The projection section 20 includes a light source 21 such as a laser light source, an optical engine 22 consisting of a display element such as a liquid crystal panel or a DMD (Digital Micromirror Device), and a projection optical system 23 consisting of a lens system, etc., and an image signal processing section. An image based on the image signal from 14 is displayed on the screen 3. Here, the optical engine 22 is an example of a display panel.

The automatic adjustment unit 15 as a first circuit automatically adjusts adjustment items related to image display based on an automatic adjustment program.
The camera 16 photographs an adjustment pattern image as a display image displayed on the screen 3 during automatic adjustment by the automatic adjustment section 15, and outputs it to the automatic adjustment section 15. Note that the pattern image is a gray code pattern, a binary code pattern, a phase shift pattern, etc., and during adjustment, the pattern image used in the adjustment is displayed on the screen 3.

The automatic adjustment section 15 analyzes the pattern image photographed by the camera 16 and modifies the adjustment parameters so that the pattern image becomes a predetermined display image. When the adjustment is completed, the automatic adjustment section 15 stores the modified adjustment parameters in the storage section. 17.
The image signal processing section 14 and the automatic adjustment section 15 are configured by, for example, an integrated circuit. Integrated circuits include LSI (Large-Scale Integration), SOC (system on a chip), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), and FPGA (Field Programmable Gate Array). etc. are included. Furthermore, an analog circuit may be included as part of the integrated circuit configuration, and the configuration may be combined with the control section 10.

The adjustments performed by the automatic adjustment section 15 are mainly overlay deviation adjustment, color variation adjustment, and brightness variation adjustment. In addition, it may be programmed to perform frame alignment adjustment and keystone correction. Note that the order of adjustment and the content of adjustment can be changed as appropriate by programming in the automatic adjustment program.

For example, an automatic adjustment program can be programmed to preferentially perform overlay misalignment adjustment.
The multi-projection system 1 has an excellent advantage of being able to display a seamless large screen image by overlapping the divided images 5A of the first projector 5 and the divided images 6A of the second projector 6. On the other hand, the multi-projection system 1 has a problem in that misalignment tends to occur in the superimposition of the divided images 5A and 6A.

Misalignment can occur, for example, when a person hits the first projector 5 and/or the second projector 6, when a building is distorted due to an earthquake or uneven subsidence, or when the weight of the projector causes distortion on the installation surface of the projector. arise or occur due to etc. Such misalignment is more likely to occur than variation in color or variation in brightness between the divided images 5A and 6A, so there is a high need for adjustment.

For example, one way to prioritize overlay adjustment is to perform overlay adjustment every time automatic adjustment is performed, and perform other adjustments only once every few times overlay adjustment is performed. The automatic adjustment program may be programmed to do so.
Note that the adjustment to be performed with priority during automatic adjustment is not limited to overlay deviation adjustment. Depending on the installation status, usage status, etc. of the multi-projection system 1, adjustments that are likely to cause adjustment deviations may be programmed into an automatic adjustment program so that adjustments that are likely to occur can be automatically adjusted in a timely manner.

Further, the automatic adjustment program may be programmed to perform simple adjustment so that automatic adjustment can be completed in a short time. By doing so, the automatic adjustment can be completed in a short time and the power of the multi-projection system 1 can be turned off, that is, the power can be turned off. Therefore, for example, after the meeting ends, the multi-projection system 1 can complete automatic adjustment and turn off the power before the user cleans up and leaves the conference room, so the multi-projection system 1 can wait for the user. User convenience can be improved as there is a low possibility that users will

Simple adjustment refers to adjustment using only 2 or 3 pattern images, as opposed to the high-precision main adjustment using a large number of pattern images that is performed during installation, and the accuracy at which the adjustment is started. adjustment, target accuracy is limited, or time is limited.
In the main adjustment of the multi-projection system 1, the adjustment is repeated many times, starting from a preliminary adjustment with rough accuracy and gradually increasing the adjustment accuracy, to achieve a highly accurate adjustment. On the other hand, in the automatic adjustment of this embodiment, since low-accuracy adjustment that is performed at the time of installation is not necessary, the automatic adjustment program can be programmed to perform only medium-accuracy adjustment.
For example, in the case of superimposition shift adjustment, it can be programmed to adjust only a 1.5 pixel shift or a 1 pixel shift. Note that the program may be programmed to perform only high-precision adjustment or only medium-precision and high-precision adjustment.

The storage unit 17 stores an OS, application programs, various data, and the like. Specifically, it stores various control programs including automatic adjustment programs, various pattern images used in automatic adjustment, adjustment parameters, power start time, power OFF history information, automatic adjustment frequency setting information, and user presentation images. .

The storage unit 17 is a storage device composed of memories such as RAM (Random Access Memory) and ROM (Read Only Memory). Storage devices include DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), SSD (Solid State Drive), flash memory such as USB (Universal Serial Bus) memory, and magnetic disks such as HDD (Hard Disk Drive). , an optical disc such as a CD (Compact Disc), a DVD (Digital Versatile Disc), or a BD (Blu-ray (registered trademark) Disc)) can be used.

The power OFF history information includes information on the number of times the power is turned off, and is counted up every time the power is turned off.

The automatic adjustment frequency setting information is used to control the frequency of automatic adjustment. For example, when "once every three times" is set, the control unit 10 executes automatic adjustment based on the power OFF history information when the power OFF history information is a multiple of three.

The adjustment parameter has a first parameter and a second parameter.
The first parameter is an adjustment parameter before automatic adjustment is executed, and is used by the image correction unit 14a to correct the image signal from power ON to power OFF.
The second parameter is an adjustment parameter that is adjusted by executing automatic adjustment after receiving the power OFF operation. Note that, on the condition that the automatic adjustment is completed, when the power is turned on next time, the image correction unit 14a is controlled to perform adjustment according to the second parameter. Here, the power OFF operation is an operation that instructs to turn off the power of the first projector 5 or the second projector 6, and is an example of a first operation.

The communication unit 7 is connected to a network 8 such as an intranet or the Internet. The communication unit 7 includes, for example, a terminal for connecting to a cable for wired communication, an antenna for wireless communication, and an interface circuit. By downloading update programs from a server (not shown) via the network 8, various control programs including the automatic adjustment program stored in the storage unit 17 can be kept up-to-date at all times. Note that the image signal may be supplied via the network 8.

The operation reception unit 18 receives operation signals including a power OFF operation from the remote control 19 and various switches provided on the housings of the first projector 5 and the second projector 6. Note that the remote control 19 may be a smartphone or a computer. The operation reception unit 18 is configured by, for example, an infrared light receiving element that receives an infrared signal from the remote control 19, a communication circuit that processes various signals received from the remote control 19, a smartphone, a computer, and other external terminals, or various switches. Ru.

The control unit 10 as the second circuit is, for example, one or more processors such as a CPU (Central Processing Unit), and controls each unit based on various control programs stored in the storage unit 17. Note that a part or all of each block including the control unit 10 may be realized by hardware such as an LSI, SOC, DSP, ASIC, PLD, or FPGA.

1.2. Method for controlling multi-projection system Next, a method for controlling the multi-projection system 1 will be described based on FIGS. 3 and 4. FIG. 3 is a flowchart showing the flow of control based on the automatic adjustment program, and FIG. 4 is a flowchart showing the setting procedure, which shows the flow of control executed by the primary projector.

In this embodiment, the first projector 5 will be described as a primary projector, and the second projector 6 will be described as a secondary projector. The primary projector requests the secondary projector to transmit status information of the secondary projector including the user operation information received by the operation reception unit 18, and also requests the secondary projector to transmit status information of the entire multi-projection system 1 including the secondary projector. , to control the start, interruption, and termination of automatic adjustment.

As shown in FIG. 3, in step S1, the first projector 5 and the second projector 6 are powered on. The power-on operation as the second operation may be performed on either the first projector 5 or the second projector 6 to control the power of both to be turned on.

The automatic adjustment program starts when the power is turned on, and remains resident while the power is turned on. The control unit 10 stores the time when the power was turned on in the storage unit 17 based on the automatic adjustment program.

In step S2, video is displayed.
The image correction section 14a corrects the image signal based on the adjustment parameter as the first parameter stored in the storage section 17. The drive signal generation section 14b outputs the corrected image signal to the projection section 20. The projection unit 20 displays an image based on the corrected image signal.

In step S3, it is determined whether or not there is an operation input to the first projector 5 and the second projector 6.
When the operation reception unit 18 receives an operation input from the user, the operation reception unit 18 sends the received operation details to the control unit 10. Note that, upon receiving the operation input from the user, the second projector 6 transmits the received operation details to the first projector 5 in response to an inquiry from the first projector 5.

When it is determined that there is an operation input (step S3/YES), the process moves to step S4. On the other hand, if there is no operation input (step S3/NO), the process returns to step S2 and continues displaying the video.

In step S4, the content of the operation is determined.
If the operation content is "power OFF" as the first operation, automatic adjustment processing based on the automatic adjustment program from step S5 to step S14 is executed. On the other hand, if the operation content is a "setting operation", the processes from step S20 to step S27 shown in FIG. 4 are executed.

In step S5, it is determined whether 20 minutes as a first period have elapsed since the power was turned on.
If 20 minutes have not elapsed since the power was turned on (step S5/NO), the process exits the automatic adjustment process and moves to the process of step S14.

This is because if adjustment is performed before the first projector 5 and the second projector 6 are warmed up, deviations in adjustment are likely to occur thereafter, making it impossible to perform effective adjustment. Note that the first period is not limited to 20 minutes. The first period may be set to a desired time period until the states of the first projector 5 and the second projector 6 stabilize.

Note that the determination of the elapsed time since the power was turned on may be programmed to be skipped. For example, when the projector's condition stabilizes in a very short time after the power is turned on, or when adjusting an item with small temperature drift, for example, when adjusting overlay deviation, it is necessary to determine the elapsed time since the power was turned on. Can be programmed to skip. On the other hand, when adjusting an item with a large temperature drift, for example, color variation, it is preferable to program the program to determine the elapsed time since the power was turned on.

If 20 minutes have passed since the power was turned on (step S5/YES), the process moves to step S6.
In step S6, based on the automatic adjustment frequency setting information and power OFF history information stored in the storage unit 17, it is determined whether the current automatic adjustment matches the set frequency.
For example, if "once in 5" is set as the automatic adjustment frequency setting information, and the number of times in the power OFF history information is a multiple of 5, it is determined that the frequency matches the set frequency, and step S7 (Step S6/YES). On the other hand, if the number of times in the power OFF history information is other than a multiple of 5, it is determined that the frequency does not match the set frequency, and the automatic adjustment process is exited (step S6/NO).

By setting the automatic adjustment frequency in this way, automatic adjustment will not be performed more frequently than necessary, so even if it takes time for the power to turn off due to execution of automatic adjustment, the user can You can minimize the number of times you have to wait.

In step S7, automatic adjustment is started.
With the start of automatic adjustment, each camera 16 of the first projector 5 and the second projector 6 is activated.
Further, based on the automatic adjustment program, the first pattern image among the plurality of pattern images used in automatic adjustment is displayed on the screen 3 from the first projector 5 and the second projector 6.

The automatic adjustment unit 15 analyzes the first pattern image taken by the camera 16 and modifies the adjustment parameters so that the pattern image becomes a predetermined display image.

In step S8, it is determined whether or not a power OFF operation has been accepted.
During the automatic adjustment, the control unit 10 monitors whether or not a power OFF operation is accepted as the first operation, and if the power OFF operation is not accepted (step S8/NO), the adjustment is completed in step S9. The automatic adjustment in step S7 is continued until it is determined that.
On the other hand, if the power OFF operation is accepted (step S8/YES), the process moves to step S12.

In step S9, it is determined whether the adjustment has been completed.
If it is determined that the adjustment has been completed (step S9/YES), the process moves to step S10, and if it is determined that the adjustment has not been completed (step S9/NO), the process returns to step S7 and the automatic adjustment that is being performed is continued. continue.

The adjustment is determined to be completed when both the first projector 5 and the second projector 6 have completed their adjustment.
Note that if the adjustment performed by the first projector 5 and the second projector 6 is an adjustment that is completed only by the first projector 5 or only by the second projector 6, the completion of the adjustment is determined individually, and the power is turned off individually. It is also possible to have a configuration in which According to this, for example, when the adjustment executed by the first projector 5 is completed, only the first projector 5 can be powered off even if the second projector 6 is still being adjusted.

In step S10, the corrected adjustment parameters are stored in the storage unit 17 as second parameters.

In step S11, it is determined whether other adjustments are required.
Based on the automatic adjustment program, the control unit 10 determines whether or not there are adjustments that have not been performed among the adjustments programmed to be performed by the first projector 5 and the second projector 6. For example, if the adjustment using the second pattern image has not been performed, it is determined that another adjustment has been made (step S11/YES), and the process returns to step S7 to perform adjustment using the second pattern image.
On the other hand, if it is determined that all adjustments have been completed (step S11/NO), the automatic adjustment is ended and the process moves to step S14.

When the automatic adjustment is completed, the adjustment parameter as the second parameter stored in step S10 is treated as the latest adjustment parameter. Thereby, the image correction unit 14a performs adjustment using the adjustment parameter as the second parameter stored in the storage unit 17 by automatic adjustment when the power is turned on as the second operation.

In step S12, automatic adjustment is interrupted. For example, if adjustment is being performed using the second pattern image, display of the second pattern image is stopped.

In step S13, the adjustment parameters before performing automatic adjustment are restored. As a result, the adjustment parameter before performing automatic adjustment, that is, the adjustment parameter as the first parameter, is treated as the latest adjustment parameter. Therefore, even if the second parameter is stored in the storage unit 17 as the adjustment parameter in step S10, the image correction unit 14a will not automatically adjust the second parameter, which is the adjustment parameter before automatic adjustment, when the power is turned on next time. The image signal is corrected using the adjustment parameter as the first parameter.

In step S14, the power is turned off.
When the power OFF process is executed, the power OFF history information is counted up, the light source 21 of the projection unit 20 is turned off, and cooling is performed. After cooling is completed, the supply of power from the sub power source is cut off, and the first projector 5 and the second projector 6 enter a standby state. Note that a configuration may be adopted in which all power sources including the main power source are turned off by executing the power OFF operation.

Next, the setting operation will be explained with reference to FIGS. 4, 5, and 6. FIG. 5 is an explanatory diagram of the setting menu screen, and FIG. 6 is an explanatory diagram of the automatic adjustment frequency setting screen.
In step S4, if the operation content is a setting operation, the process moves to step S20.

As shown in FIG. 4, in step S20, a settings menu screen is displayed.
On the setting menu screen shown in FIG. 5, adjustment, automatic adjustment frequency, and initialization are displayed to be selectable.
As adjustment items, brightness adjustment, color adjustment, sharpness adjustment, image distortion correction, and multi-projection adjustment are displayed for selection.
The automatic adjustment frequency is setting information used in the determination in step S6 described above, and in the example of FIG. 5, it is displayed that the current setting is "once in three times."
Initialize is selected when initializing the setting information.

When the user selects automatic adjustment frequency as the third operation on the setting menu screen of FIG. 5, it is determined in step S21 that frequency setting has been selected, and the process moves to step S22.

In step S22, a setting screen for setting the frequency of adjustment is displayed.
In the setting screen of FIG. 6, "once in 3 times", "once in 5 times", "once in 10 times", and "every time" are displayed to be selectable. For example, if "once in 10" is selected, the automatic adjustment is controlled to be executed when the number of times in the power OFF history information is a multiple of 10. Moreover, "every time" is controlled so that automatic adjustment is executed every time the power is turned off. Note that the frequency of automatic adjustment may be other than this.
In the setting screen shown in FIG. 6, "once every three times" is selected. The user can select the desired number of times by operating the cursor movement keys on the remote control 19.

In step S23, it is determined whether or not the setting of the automatic adjustment frequency has been completed.
When the user operates the return key or the end key, it is determined that the automatic adjustment frequency setting has been completed (step S23/YSE), and the process moves to step S24. If it is not determined that the setting is finished (step S23/NO), the automatic setting frequency setting screen continues to be displayed.

In step S24, the frequency selected in step S22 is stored in the storage unit 17 as automatic adjustment frequency setting information. After that, the process returns to step S2.

When the user selects "adjustment" on the setting menu screen of FIG. 5, it is determined in step S21 that adjustment has been selected, and the process moves to step S25.

In step S25, an adjustment screen is displayed.
For each adjustment such as brightness adjustment, color adjustment, sharpness adjustment, image distortion correction, and multi-projection adjustment, a screen prepared for adjustment is displayed, and adjustment parameters are adjusted. Note that each adjustment can also be performed automatically using the camera 16.

In step S26, it is determined whether the adjustment settings have been completed.
When the user operates the return key or the end key, it is determined that the adjustment has been completed (step S26/YSE), and the process moves to step S27. If it is not determined that the settings have been completed (step S26/NO), the adjustment screen continues to be displayed.

In step S27, the adjusted adjustment parameter is stored in the storage unit 17 as a first parameter. After that, the process returns to step S2.

As described above, according to this embodiment, the following effects can be obtained.
A method for controlling the first projector 5 as a display device according to one aspect of the present invention includes accepting a first operation to turn off the power of the first projector 5 as a display device, and when receiving the first operation. , including starting adjustment of the pattern image as a display image of the first projector 5, and turning off the power of the first projector 5 when the adjustment is completed.

Thereby, when an operation to turn off the power of the first projector 5 is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the first projector 5 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and to realize a highly convenient display device control method.

Furthermore, when performing automatic adjustment by scheduling, if the multi-projection system 1 is being used at the scheduled date and time, or the power of the first projector 5 and the second projector 6 is OFF, the automatic adjustment will be skipped. However, according to this embodiment, automatic adjustment is performed when the power is turned off, so automatic adjustment can be performed reliably.

The method for controlling the first projector 5 as a display device according to one aspect of the present invention further provides that if the first operation is received between the start of the adjustment and the completion of the adjustment, the adjustment is performed. and powering off the first projector 5.
As a result, if an operation to turn off the power of the first projector 5 is received while automatic adjustment is being performed, the adjustment is interrupted and the power of the first projector 5 is turned off, thus completing the adjustment of the first projector 5. You can avoid making the user wait until Therefore, it is possible to avoid loss of user convenience.

The method for controlling the first projector 5 as a display device according to one aspect of the present invention further includes storing the first parameter, and if the first operation is received before the adjustment is completed, the control method for the first projector 5 as a display device further includes: After interrupting the adjustment, the first projector 5 is turned off, and after the adjustment is interrupted, the first projector 5 is turned off, and then the second operation of turning on the first projector 5 is accepted. displaying the image adjusted by the first parameter when the adjustment is completed; and turning off the power when the adjustment is completed; storing the second parameter obtained by the adjustment, and the adjustment is completed; In this case, if the second operation is received after turning off the power of the first projector 5, the process includes displaying an image adjusted according to the second parameter.
As a result, if automatic adjustment is interrupted, the image will be displayed according to the adjustment parameters before automatic adjustment, so the image will be displayed according to the adjustment parameters memorized during adjustment, thereby avoiding display problems. can do. Therefore, a highly convenient display device control method can be realized.

In the method for controlling the first projector 5 as a display device according to one embodiment of the present invention, the adjustment may be started after a first period of 20 minutes has elapsed since the first projector 5 was powered on. This includes starting when the
As a result, automatic adjustment is performed after the first projector 5 warms up and the state of the first projector 5 becomes stable, so the automatic adjustment is started before the state of the first projector 5 becomes stable. By doing so, it is possible to avoid subsequent adjustment deviations. Therefore, a highly convenient display device control method can be realized.

A method for controlling the first projector 5 as a display device according to one aspect of the present invention includes receiving a frequency setting as a third operation that specifies the frequency of adjusting the first projector 5, and adjusting the frequency based on the frequency. and determining whether to start the adjustment of the pattern image as the display image of the first projector 5. In determining the start of the adjustment of the first projector 5, This includes starting the adjustment of the first projector 5 when it is determined that the adjustment of the projector 5 is to be started.
As a result, automatic adjustment can be performed as frequently as necessary, and a highly convenient display device control method can be realized.

A method for controlling the multi-projection system 1 as a display system according to one aspect of the present invention includes accepting a first operation to turn off the power of a first projector 5 as a first display device; In this case, the adjustment of the pattern image as the display image of the first projector 5 and the adjustment of the pattern image as the display image of the second projector 6 as the second display device are started, and the adjustment of the pattern image as the display image of the first projector 5 is started. This includes turning off the power of the first projector 5 when the adjustment is completed, and turning off the power of the second projector 6 when the adjustment of the second projector 6 is completed.
As a result, when an operation to turn off the power of the first projector 5 is received, adjustment of the display images of the first projector 5 and the second projector 6 is started, and when the adjustment is completed, the adjustment of the display images of the first projector 5 and the second projector 6 is started. 2 The power of the projector 6 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and it is possible to realize a highly convenient display system control method.

In the method for controlling the multi-projection system 1 as a display system according to one aspect of the present invention, furthermore, turning off the power of the first projector 5 is performed when the adjustment of the first projector 5 is completed and when the adjustment of the second projector 6 is completed. This includes turning off the power of the first projector 5 when the adjustment is completed.
As a result, it is possible to avoid, for example, a situation in which only one of the first projector 5 and the second projector 6 is powered off and the adjustment cannot be performed during the adjustment of the overlay deviation.
Therefore, it is possible to avoid loss of user convenience, and to realize a highly convenient display system.

The first projector 5 as a display device as one aspect of the present invention includes an optical engine 22 as a display panel, a communication circuit or switch that accepts a first operation of cutting off power supply to the optical engine 22, and a first projector 5 as a display device. When the operation of It includes a control unit 10 as a second circuit that cuts off the supply of power.

Thereby, when an operation to turn off the power of the first projector 5 is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the first projector 5 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and to realize a highly convenient display device.

A program according to one aspect of the present invention includes receiving information indicating a first operation of turning off the power of the first projector 5, and instructing the first projector 5 to perform a first operation when receiving information indicating the first operation. The process includes starting adjustment of a pattern image as a display image of the first projector 5, and turning off the power of the first projector 5 when the adjustment of the first projector 5 is completed.
Thereby, when an operation to turn off the power of the first projector 5 is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the first projector 5 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and to realize a highly convenient program.

2. Embodiment 2
2.1. Configuration of Multi-Projection System The configuration of the multi-projection system 100 as a display system will be described with reference to FIG. 7. FIG. 7 is a block diagram showing a configuration example of a multi-projection system according to this embodiment. In the following description, the same configurations and procedures as in Embodiment 1 will be denoted by the same reference numerals, and overlapping description will be omitted.

As shown in FIG. 7, the multi-projection system 100 includes a computer 70, a first projector 50 as a display device or a first display device, a second projector 60 as a second display device, and a camera 33. Ru.
A screen 3 and a network 8 are arranged or connected to the multi-projection system 100.

The computer 70, the first projector 50, the second projector 60, and the camera 33 are connected via the network 8. Therefore, computer 70 does not need to be located at the same location as first projector 50, second projector 60, and camera 33.
The computer 70 is, for example, a mobile computer such as a laptop computer or a PDA (Personal Digital Assistant), but may also be an information terminal such as a smartphone.

The multi-projection system 100 of this embodiment differs from the multi-projection system 1 of the first embodiment in that a computer 70 controls automatic adjustment.

The computer 70 includes a control section 71, an image processing section 72, a display section 73, a PJ operation reception section 74, an automatic adjustment section 75, a storage section 76, a communication section 77, and an input section 78.

The communication unit 77 includes, for example, a terminal for connecting to a cable for wired communication, an antenna for wireless communication, and an interface circuit.
The image processing unit 72 generates a divided image 50A and a divided image 60A based on the image information stored in the storage unit 76 or the image information stored in the server on the network 8, and transmits the divided images to the first projector 50 and the divided image 60A, respectively. Output to the second projector 60. Note that the image information to be displayed by the first projector 50 and the second projector 60 may be supplied to the first projector 50 and the second projector 60 from a media server or the like on the network.

The PJ operation reception unit 74 receives operation input for operating the multi-projection system 100. The operation input to the multi-projection system 100 includes, for example, an operation to turn on or turn off the power of the multi-projection system 100, an operation to set the automatic adjustment frequency of the multi-projection system 100, and an operation to adjust the multi-projection system 100. etc. The PJ operation reception unit 74 is configured by, for example, an infrared light receiving unit that receives signals from a mouse or keyboard, a wireless communication circuit, a connection terminal that connects to the mouse or keyboard, or a touch panel or switch included in the computer 70.

The automatic adjustment unit 75 performs automatic adjustment regarding image display based on an automatic adjustment program.
Based on a transmission request from the computer 70, the camera 33 photographs an adjustment pattern image displayed on the screen 3 during automatic adjustment and transmits it to the automatic adjustment section 75.

The automatic adjustment unit 75 analyzes the pattern image photographed by the camera 33 and adjusts adjustment parameters so that the pattern image becomes a predetermined display image. When the adjustment is completed, the adjusted adjustment parameters are stored in the storage unit 76, and are also stored in each storage unit 17 of the first projector 50 and the second projector 60 as the first parameter or the second parameter. Ru.
The image processing section 72 and the automatic adjustment section 75 are configured by, for example, an integrated circuit. Integrated circuits include LSIs, SOCs, DSPs, ASICs, PLDs, FPGAs, and the like. Further, an analog circuit may be included as part of the integrated circuit configuration, and the analog circuit may be combined with the control section 71.

The storage unit 76, like the storage unit 17, is composed of memories such as RAM and ROM. The storage unit 76 stores an OS, application programs, various data, and the like. Specifically, it stores various control programs including automatic adjustment programs, various pattern images used in automatic adjustment, adjustment parameters, power start time, power OFF history information, automatic adjustment frequency setting information, and user presentation images. .

The control unit 71, like the control unit 10, is one or more processors such as a CPU. Further, a part or all of each block including the control unit 71 may be realized by hardware such as an LSI, SOC, DSP, ASIC, PLD, or FPGA.

The first projector 50 and the second projector 60 have the same configuration.
Each adjustment section 31 of the first projector 50 and the second projector 60 executes adjustment based on a control signal from the computer 70 when automatic adjustment is started.

2.2. Method for controlling multi-projection system Next, a method for controlling the multi-projection system 100 will be described based on FIGS. 3 and 4. In this embodiment, the automatic adjustment is controlled by computer 70. The flow of control executed by the computer 70 is substantially the same as the control executed by the primary projector in Embodiment 1, so redundant explanation will be omitted as appropriate.

In step S1, the first projector 50 and the second projector 60 are started.
When the PJ operation reception unit 74 of the computer 70 receives an operation to turn on the power of the first projector 50 and the second projector 60, the PJ operation reception unit 74 of the computer 70 sends a control signal to start the power of the first projector 50 and the second projector 60 to the first projector 50. and transmits it to the second projector 60.
The automatic adjustment program can be programmed to start up when the first projector 50 and the second projector 60 are turned on.
Based on the automatic adjustment program, the control unit 71 stores in the storage unit 76 the times when the first projector 50 and the second projector 60 are powered on.

In step S2, video is displayed.
When the PJ operation receiving unit 74 of the computer 70 receives an operation for displaying images on the first projector 50 and the second projector 60, it outputs an image signal for displaying the image to the first projector 50 and the second projector 60.

The image correction section 14a of the first projector 50 and the second projector 60 corrects the image signal based on the adjustment parameter as the first parameter stored in the storage section 17. The drive signal generation section 14b outputs a drive signal including the corrected image signal to the projection section 20. The projection unit 20 displays an image based on the corrected image signal.

In step S3, it is determined whether there is an operation input.
When the PJ operation reception unit 74 receives an operation input from the user (step S3/YES), the PJ operation reception unit 74 sends the received operation details to the control unit 71. It should be noted that if there is an operation input to the operation reception unit 18 of the first projector 50 and the second projector 60, the program can also be programmed so that the operation content is transmitted to the computer 70.

In step S4, the control unit 71 determines the content of the operation.
If the operation content is to turn off the power as the first operation, automatic adjustment processing based on the automatic adjustment program from step S5 to step S14 is executed. On the other hand, if the operation content is a setting operation, the processes from step S20 to step S27 shown in FIG. 4 are executed.

In step S5, the control unit 71 determines whether 20 minutes as a first period have elapsed since the first projector 50 and the second projector 60 were powered on.
If 20 minutes have not elapsed since the power was turned on (step S5/NO), the process exits the automatic adjustment process and proceeds to step S14, and the control unit 71 causes the first projector 50 and the second projector 60 to Sends a control signal to turn off the power.

In step S6, it is determined whether the current automatic adjustment matches the set frequency based on the automatic adjustment frequency setting information and power OFF history information stored in the storage unit 76. If it is determined that the frequency matches the set frequency (step S6/YES), the process moves to step S7.

In step S7, automatic adjustment is started.
Upon starting the automatic adjustment, the control unit 71 activates the camera 33.
Furthermore, the control unit 71 shifts the first projector 50 and the second projector 60 to the adjustment mode based on the automatic adjustment program. Then, a control signal is transmitted to the first projector 50 and the second projector 60 so that the first pattern image among the plurality of pattern images used in automatic adjustment is displayed on the screen 3.

While analyzing the first pattern image taken by the camera 33, the automatic adjustment unit 75 corrects the adjustment parameters so that the pattern image becomes a predetermined display image, and when the adjustment is completed (step S9/ YES), the corrected adjustment parameters are stored as second parameters in the storage unit 76, and are also stored in each storage unit 17 of the first projector 50 and the second projector 60 (step S10). Note that the adjustment parameters may be programmed to be stored only in each storage section 17.

In step S11, it is determined whether there is any other adjustment.
Based on the automatic adjustment program, the control unit 71 determines whether or not there are adjustments that have not been performed among the adjustments programmed to be performed by the first projector 50 and the second projector 60. For example, if the adjustment using the second pattern image has not been performed, it is determined that there is another adjustment (step S11/YES), and the adjustment using the second pattern image is performed in step S7.
On the other hand, if it is determined that all adjustments have been completed (step S11/NO), the automatic adjustment is ended and the process moves to step S14.

The adjustment is determined to be completed when both the first projector 50 and the second projector 60 have completed their adjustment. Note that if the adjustment performed by the first projector 50 and the second projector 60 is an adjustment that is completed only by the first projector 50 or only by the second projector 60, the completion of the adjustment is determined individually and the power is turned off individually. It is also possible to have a configuration in which For example, when the adjustment executed by the first projector 50 is completed, only the first projector 50 is powered off even if the second projector 60 is still being adjusted.

If it is determined in step S8 that a power OFF operation has been received during automatic adjustment (step S8/YES), the process moves to step S12. Note that the power OFF operation may be received by the PJ operation reception unit 74 or the operation reception unit 18 of the first projector 50 and the second projector 60.

In step S12, the control unit 71 interrupts automatic adjustment.
In step S13, the control unit 71 restores the adjustment parameters before performing automatic adjustment.

In step S14, the control unit 71 counts up the power OFF history information and sends a control signal instructing the first projector 50 and the second projector 60 to execute the power OFF.
As a result, the first projector 50 and the second projector 60 turn off the light source 21 of the projection section 20 and perform cooling, and after the cooling ends, enter a standby state.

In step S4, if the operation content is a setting operation, the process moves to step S20.
In step S20, a setting menu screen shown in FIG. 5 is displayed. The setting menu screen may be displayed on either the display unit 73 or the screen 3.
When the user selects the automatic adjustment frequency on the setting menu screen of FIG. 5, it is determined in step S21 that the frequency setting has been selected, and the process moves to step S22.

In step S22, an automatic adjustment frequency setting screen shown in FIG. 6 is displayed. The frequency of automatic adjustment can be selected in the same manner as in the first embodiment.

If it is determined in step S23 that the automatic adjustment frequency setting has been completed (step S23/YSE), the process moves to step S24, and the selected frequency is stored in the storage unit 76 as automatic adjustment frequency setting information. Ru. After that, the process returns to step S2.

When the user selects adjustment on the setting menu screen of FIG. 5, it is determined in step S21 that adjustment has been selected, and the process moves to step S25.

In step S25, an adjustment screen is displayed.
The control unit 71 controls the first projector 50 and the second projector 60 to execute the selected adjustment. Note that each adjustment can also be performed automatically using the camera 33.

In step S26, it is determined whether the adjustment settings have been completed.
If it is determined that the adjustment has been completed (step S26/YSE), the process moves to step S27, and the adjusted adjustment parameter is stored as the first parameter in the storage unit 76, the first projector 50, and the second projector 60. It is stored in the storage unit 17. Note that the adjusted adjustment parameters may be stored only in each storage unit 17. After that, the process returns to step S2.

As described above, according to this embodiment, in addition to the effects of the above embodiments, the following effects can be obtained.
A method for controlling the first projector 50 as a display device according to one aspect of the present invention includes accepting a first operation to turn off the power of the first projector 50 as a display device, and when receiving the first operation. , starting adjustment of the pattern image as a display image of the first projector 50, and turning off the power of the first projector 5 when the adjustment is completed.
Thereby, when an operation to turn off the power of the first projector 50 is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the first projector 50 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and to realize a highly convenient display device control method.

A method for controlling the multi-projection system 100 as a display system according to one aspect of the present invention includes accepting a first operation to turn off the power of a first projector 50 as a first display device; In this case, the adjustment of the pattern image as the display image of the first projector 50 and the adjustment of the pattern image as the display image of the second projector 60 as the second display device are started, and the adjustment of the pattern image as the display image of the first projector 50 is started. This includes turning off the power of the first projector 50 when the adjustment is completed, and turning off the power of the second projector 60 when the adjustment of the second projector 60 is completed.
As a result, when an operation to turn off the power of the first projector 50 is received, adjustment of the display images of the first projector 50 and the second projector 60 is started, and when the adjustment is completed, the adjustment of the display images of the first projector 50 and the second projector 60 is started. 2 projector 60 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and it is possible to realize a highly convenient display system control method.

A program according to one aspect of the present invention includes receiving information indicating a first operation of turning off the power of the first projector 50, and instructing the first projector 50 to perform a first operation when receiving information indicating the first operation. The process includes starting adjustment of a pattern image as a display image of the first projector 50, and turning off the power of the first projector 50 when the adjustment of the first projector 50 is completed.
Thereby, when an operation to turn off the power of the first projector 50 is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the first projector 50 can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the automatic adjustment is completed, and to realize a highly convenient program.

3. Embodiment 3
3.1. Configuration of Projector The configuration of the projector 5 as a display device will be described with reference to FIG. 8. FIG. 8 is a block diagram showing a configuration example of a projector according to this embodiment. In the following description, the same configurations and procedures as in Embodiment 1 will be denoted by the same reference numerals, and overlapping description will be omitted.

As shown in FIG. 8, the projector 5 displays a large screen image on the screen 3 based on the image signal input from the image signal output device 2.
The projector 5 of this embodiment differs from the multi-projection system 1 of the first embodiment in that it displays a large screen using one projector.

The projector 5 has the same configuration as the first projector 5 of the first embodiment. Further, the automatic adjustment program stored in the storage unit 17 operates in the same manner as the automatic adjustment program of the first embodiment, except that it does not require control of the secondary projector and the adjustment contents executed during automatic adjustment are partially different. is programmed to do so.

In this embodiment, the adjustments executed by the automatic adjustment program include, for example, programming a frame alignment adjustment to match the display image of the projector 5 to the frame of the screen 3, and keystone correction to adjust the display image of the projector 5 to square. Can be done.

In Embodiment 1 and Embodiment 2 above, an example is described in which a projector is used as a display device, but a direct-view display such as an FPD (Flat Panel Display) may be adopted as a display device to configure a multi-display system. . In this case, as the adjustment executed by the automatic adjustment program, for example, color variation adjustment or brightness variation adjustment can be programmed. A panel included in a direct-view display such as an FPD is an example of a display panel.

Further, in the third embodiment, an example is described in which a projector is used as the display device, but a direct-view display such as an FPD may be used as the display device. In this case, as the adjustments executed by the automatic adjustment program, for example, resolution adjustment, brightness adjustment, and color tone adjustment can be programmed. A panel included in a direct-view display such as an FPD is an example of a display panel.

Although the present invention has been described above based on the preferred embodiments, the present invention is not limited to the above-described embodiments. Further, the configuration of each part of the present invention can be replaced with any configuration that performs the same function as in the above-described embodiment, or any configuration can be added.

[Summary of this disclosure]
A summary of the present disclosure is appended below.
(Additional note 1)
accepting a first operation to turn off the power of the display device;
When the first operation is accepted, starting adjustment of the display image of the display device;
turning off the power when the adjustment is completed;
How to control a display device.
Thereby, when an operation to turn off the power of the display device is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the display device can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the adjustment is completed, and to realize a highly convenient display device control method.

(Additional note 2)
If the first operation is received between the start of the adjustment and the completion of the adjustment,
suspending said adjustment;
turning off the power;
A method for controlling a display device according to Supplementary Note 1.
As a result, if an operation to turn off the power of the display device is received while the adjustment is being performed, the adjustment will be interrupted and the power of the display device will be turned off, making the user wait until the adjustment of the display device is completed. You can avoid that. Therefore, it is possible to avoid loss of user convenience.

(Appendix 3)
memorizing a first parameter;
If the first operation is received before the adjustment is completed, turning off the power after interrupting the adjustment;
If a second operation of turning on the power is received after the adjustment is interrupted and the power is turned off, displaying an image adjusted according to the first parameter;
When the adjustment is completed, turning off the power includes storing a second parameter obtained by the adjustment,
If the second operation is received after turning off the power when the adjustment is completed, displaying an image adjusted according to the second parameter;
A method for controlling a display device according to Supplementary Note 1.
As a result, if the adjustment is interrupted, the image will be displayed using the first parameter before the adjustment, so the image will be displayed using the second parameter memorized during the adjustment, which may cause display problems. can be avoided. Therefore, a highly convenient display device control method can be realized.

(Additional note 4)
Starting the adjustment includes starting when a first period has elapsed since the power was turned on.
A method for controlling a display device according to any one of Supplementary Notes 1 to 3.
As a result, the adjustment is performed after the display device has warmed up and the state of the display device has stabilized. Therefore, by starting the adjustment before the state of the display device has stabilized, the adjustment It is possible to avoid misalignment. Therefore, a highly convenient display device control method can be realized.

(Appendix 5)
accepting a third operation specifying the frequency of performing the adjustment;
determining whether to start the adjustment based on the frequency;
Starting the adjustment includes, in determining whether to start the adjustment, starting the adjustment when it is determined to start the adjustment.
A method for controlling a display device according to any one of Supplementary Notes 1 to 4.
As a result, adjustments can be made as often as necessary, and a highly convenient display device control method can be realized.

(Appendix 6)
accepting a first operation to turn off the power of the first display device;
When the first operation is accepted, starting adjustment of the display image of the first display device and adjustment of the display image of the second display device;
when the adjustment of the first display device is completed, turning off the power of the first display device;
powering off the second display device when the adjustment of the second display device is completed;
How to control the display system.
As a result, when an operation to turn off the power of the first display device is received, adjustment of the display images of the first display device and the second display device is started, and when the adjustment is completed, the first The display device and the second display device can be powered off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the adjustment is completed, and it is possible to realize a highly convenient display system control method.

(Appendix 7)
Turning off the power of the first display device is performed when the adjustment of the first display device is completed and the adjustment of the second display device is completed. including turning off the power of the
A method for controlling a display system according to appendix 6.
As a result, it is possible to avoid, for example, a situation in which only one of the first display device and the second display device is powered off and the adjustment cannot be performed during the adjustment of the overlay deviation.

(Appendix 8)
a display panel;
a communication circuit or switch that accepts a first operation of cutting off power supply to the display panel;
a first circuit that adjusts a display image on the display panel when the first operation is received;
a second circuit that cuts off the power supply when the adjustment is completed;
Display device.
Thereby, when an operation to turn off the power of the display device is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the display device can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the adjustment is completed, and to realize a highly convenient display device.

(Appendix 9)
receiving information indicating a first operation of powering off the display device;
causing the display device to start adjusting a display image of the display device when information indicating the first operation is received;
When the adjustment is completed, turning off the power;
A program that causes a computer to run.
Thereby, when an operation to turn off the power of the display device is received, adjustment of the displayed image can be started, and when the adjustment is completed, the power of the display device can be turned off.
Therefore, it is possible to avoid deteriorating the user's convenience, such as restricting the use of the display device until the adjustment is completed, and it is possible to realize a highly convenient program.

DESCRIPTION OF SYMBOLS 1...Multi-projection system, 2...Image signal output device, 3...Screen, 4...Transmission cable, 5...Projector, 1st projector, 5A...Divided image, 6...2nd projector, 6A...Divided image, 7...Communication unit , 7a...Antenna, 8...Network, 8a...Access point, 10...Control unit, 11...Whole image, 13...Power supply unit, 14...Image signal processing unit, 14a...Image correction unit, 14b...Drive signal generation unit, 15 ... automatic adjustment section, 16 ... camera, 17 ... storage section, 18 ... operation reception section, 19 ... remote control, 20 ... projection section, 21 ... light source, 22 ... optical engine, 23 ... projection optical system, 31 ... adjustment section, 33 ...Camera, 50...First projector, 50A...Divided image, 60...Second projector, 60A...Divided image, 70...Computer, 71...Control unit, 72...Image processing unit, 73...Display unit, 74...PJ operation reception section, 75... automatic adjustment section, 76... storage section, 77... communication section, 78... input section, 100... multi-projection system.

Claims (9)

accepting a first operation to turn off the power of the display device;
When the first operation is accepted, starting adjustment of the display image of the display device;
turning off the power when the adjustment is completed;
How to control a display device. If the first operation is received between the start of the adjustment and the completion of the adjustment,
suspending said adjustment;
turning off the power;
A method for controlling a display device according to claim 1. memorizing a first parameter;
If the first operation is received before the adjustment is completed, turning off the power after interrupting the adjustment;
If a second operation of turning on the power is received after the adjustment is interrupted and the power is turned off, displaying an image adjusted according to the first parameter;
When the adjustment is completed, turning off the power includes storing a second parameter obtained by the adjustment,
If the second operation is received after turning off the power when the adjustment is completed, displaying an image adjusted according to the second parameter;
A method for controlling a display device according to claim 1. Starting the adjustment includes starting when a first period has elapsed since the power was turned on.
A method for controlling a display device according to any one of claims 1 to 3. accepting a third operation specifying the frequency of performing the adjustment;
determining whether to start the adjustment based on the frequency;
Starting the adjustment includes, in determining whether to start the adjustment, starting the adjustment when it is determined to start the adjustment.
A method for controlling a display device according to any one of claims 1 to 3. accepting a first operation to turn off the power of the first display device;
When the first operation is accepted, starting adjustment of the display image of the first display device and adjustment of the display image of the second display device;
when the adjustment of the first display device is completed, turning off the power of the first display device;
powering off the second display device when the adjustment of the second display device is completed;
How to control the display system. Turning off the power of the first display device is performed when the adjustment of the first display device is completed and the adjustment of the second display device is completed. including turning off the power of the
A method for controlling a display system according to claim 6. a display panel;
a communication circuit or switch that accepts a first operation of cutting off power supply to the display panel;
a first circuit that adjusts a display image on the display panel when the first operation is received;
a second circuit that cuts off the power supply when the adjustment is completed;
Display device. receiving information indicating a first operation of powering off the display device;
causing the display device to start adjusting a display image of the display device when information indicating the first operation is received;
When the adjustment is completed, turning off the power;
A program that causes a computer to run.

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