JP2015082672A - Projector and control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector which allows a user to grasp more setting items and set contents thereof at the time of transition to a standby mode.SOLUTION: A projector comprises: an input operation section 30 for accepting input operation; a power source section 22 for supplying power to its own device; a projection section 10 for projecting an image; a storage section 40 for storing setting items for setting states of its own device and set contents thereof as setting information; and a controller 50 which controls the projection section 10 so as to cause the projection section 10 to project the image indicating the setting information and controls the power source section 22 so as to cause a mode to transition to a standby mode subsequent to projection of the image indicating the setting information in the case where the input operation section 30 accepts operation for causing the mode to transition to the standby mode.

Description

  The present invention relates to a projector and a projector control method.

  A technique for displaying setting changes made to setting items such as brightness and color mode of the projector when the projector is shifted to the standby mode is known (see Patent Document 1).

JP 2012-134911 A

  However, the technique described in Patent Document 1 does not consider displaying setting items whose settings have not been changed. For this reason, the user may not be able to grasp all the setting items of the projector and the contents of the settings when the projector, which is not familiar to the user, is shifted to the standby mode.

  Therefore, the present invention has been made in view of the above-described problems of the prior art, and provides a projector and a projector control method capable of allowing a user to grasp useful setting contents when shifting to a standby mode.

[1] The present invention has been made to solve the above problems, and includes an input operation unit that receives an input operation, a power supply unit that supplies power to the own device, a projection unit that projects an image, and the own device. When an operation for shifting to the standby mode is accepted by the setting unit for setting the state and the storage unit for storing the setting content as setting information and the input operation unit, an image representing the setting information is projected. And a control unit that controls the power supply unit to shift to the standby mode after controlling the projection unit and projecting an image representing the setting information.

  With this configuration, when the operation for shifting to the standby mode is accepted by the input operation unit, the projector controls the projection unit to project an image representing the setting information and projects an image representing the setting information. Thereafter, since the power supply unit is controlled to shift to the standby mode, the user can be made aware of useful setting contents when shifting to the standby mode.

[2] Further, the present invention is the projector according to [1], wherein each of the setting items included in the setting information indicates whether or not to display with an image representing the setting information. Information is associated, and the control unit projects an image representing the setting item associated with the display enable / disable information indicating that the setting information is to be displayed by an image representing the setting information and setting information to be displayed for the setting content. It is a projector which controls the said projection part so that.

  With this configuration, the projector causes the projection unit to project an image representing the setting item associated with display enable / disable information indicating that the setting information is to be displayed by an image representing the setting information and setting information to be displayed for the setting content. In order to control, the setting items desired by the user and the setting contents thereof can be displayed before shifting to the standby mode.

[3] Further, the present invention is the projector according to [1] or [2], wherein the control unit projects an image representing the setting information and then enters the standby mode by the input operation unit. When the operation for confirming the shift is accepted, the projector controls the power supply unit to shift to the standby mode.

  With this configuration, after projecting an image representing setting information, the projector controls the power supply unit to shift to the standby mode when an operation for confirming the transition to the standby mode is accepted by the input operation unit. After the image representing the setting information is displayed, it is possible to prevent a transition to the standby mode before the user grasps the displayed content.

[4] In addition, the present invention is the projector according to any one of [1] to [3], in which the control unit relates to a use state of the projector before shifting to the standby mode. It is a projector which controls the said projection part so that the warning image showing a warning may be projected.

  With this configuration, the projector controls the projection unit so as to project a warning image representing a warning about the projector usage status before shifting to the standby mode, so that the user does not know the warning about the projector usage status. It is possible to prevent the projector from being used continuously.

[5] Further, the present invention is the projector according to [4], in which the storage unit stores a value indicating a use situation regarding the projector, and the control unit stores the value stored in the storage unit. When the value representing the usage status exceeds a predetermined threshold, the projector is controlled to project the warning image before shifting to the standby mode, and the warning image has a value representing the usage status. It is a projector that is an image notifying that the threshold value has been exceeded.

  With this configuration, when the value indicating the usage status stored in the storage unit exceeds a predetermined threshold, the projector notifies the warning image that the value indicating the usage status exceeds the threshold before shifting to the standby mode. Since the projection unit is controlled so as to project, the user can be made aware of an event that may occur when the value representing the usage state exceeds the threshold before the event occurs.

[6] Further, the present invention is the projector according to [5], wherein the value indicating the use state is a cumulative lighting time of a light source for performing the projection.

  With this configuration, when the cumulative lighting time of the light source for projecting exceeds a predetermined threshold, the projector exceeds the predetermined lighting time of the light source for projecting before shifting to the standby mode. Since the projection unit is controlled so as to project a warning image that informs the user, it is possible to prompt the user to prepare a replacement light source before the cumulative lighting time of the light source reaches the average life of the light source. .

[7] Further, the present invention provides an input operation unit that receives an input operation, a power supply unit that supplies power to the own device, a projection unit that projects an image, a setting item for setting the state of the own device, and setting contents thereof. And a storage unit that stores the setting information, and the control unit of the projector controls the projection unit to project an image representing the setting information when an operation to set the standby mode is accepted by the input operation unit. Then, after projecting an image representing the setting information, the projector control method controls the power supply unit to shift to the standby mode.

  With this configuration, when an operation for setting the standby mode is accepted by an input operation, the projector controls the projection unit to project an image representing the setting information, projects the image representing the setting information, and then enters the standby mode. Since the power supply unit is controlled to shift to the projector, the projector can make the user know useful setting contents when shifting to the standby mode.

  As described above, the projector controls the projection unit to project the image representing the setting information and projects the image representing the setting information when the operation for shifting to the standby mode is accepted by the input operation unit. Since the power supply unit is controlled to shift to the standby mode, the user can be made aware of useful setting contents when shifting to the standby mode.

It is a figure which shows the structural example of the projector 1 which concerns on this embodiment. It is an example of a display setting selection image. It is an example of a setting content display image. It is an example of a warning display image. 6 is a flowchart illustrating an example of a flow of processing for displaying a setting content display image and a warning display image, which is executed by a control unit.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of a projector 1 according to the present embodiment. For example, the projector 1 includes a projection unit 10, a power supply terminal 20, a power supply unit 22, an input operation unit 30, a storage unit 40, a control unit 50, an image input terminal 60, an image signal input unit 70, An image signal processing unit 80 and an OSD (On Screen Display) processing unit 90 are provided.

  The projection unit 10 includes, for example, a light source 12, a liquid crystal light valve 14, a projection lens 16, and a liquid crystal drive unit 18. The light source 12 is a discharge-type light source lamp made of, for example, an ultra-high pressure mercury lamp or a metal halide lamp. The light source 12 further includes a reflector that reflects the light emitted from the light source lamp to the liquid crystal light valve 14 side. The light source 12 is not limited to a light source lamp, and an LED (Light Emitting Diode) light source, a laser light source, or the like may be used. The liquid crystal light valve 14 is, for example, a transmissive liquid crystal panel corresponding to each of RGB (Red, Green, Blue), which are the three primary colors of light, in which liquid crystal is sealed between a pair of transparent substrates. The liquid crystal light valve 14 is not limited to a transmissive liquid crystal panel, but may be a reflective liquid crystal panel, or may be a liquid crystal panel (DMD) or the like. The projection lens 16 is a lens as a projection optical system for enlarging and projecting the light that projects the image incident from the liquid crystal light valve 14 onto the screen SC or the like. The liquid crystal drive unit 18 applies (drives) a drive voltage corresponding to image information input from the OSD processing unit 90 described later to each pixel of the liquid crystal light valve 14. By this application, the liquid crystal driving unit 18 causes the light incident on the liquid crystal light valve 14 from the light source 12 to be formed on the liquid crystal light valve 14 as light that displays an image corresponding to the image information.

  The power supply terminal 20 is a terminal for supplying power such as an alternating voltage of 100 [V] from the outside. The power supply unit 22 receives AC power from the power supply terminal 20, converts the received AC power into predetermined DC power, and supplies the converted DC power to each unit of the projector 1. In addition, the power supply unit 22 stops supplying a power necessary for each unit of the projector 1 to project an image according to a request from the control unit 50 and a part or all of the power supply to each unit. Then, a state of waiting until an operation for turning on the power is accepted (hereinafter referred to as a standby mode) is switched.

  Note that the type of the standby mode is determined by the contents of one or more setting items set by the user for the projector 1, and there are a plurality of types of standby modes. Setting items include, for example, which of a plurality of brightness settings to select, which of a plurality of color modes to select, whether to enable or disable sleep mode, and the type of input terminal Selection, selection of availability of communication in the standby mode, and the like. The multiple types of standby modes are, for example, a state in which communication is possible or impossible in the standby mode, and when the video signal is input from the connected device in the standby mode, the contents are displayed on the external monitor. This refers to a state that can be confirmed, a state in which the video source can be switched, or a combination thereof.

  The input operation unit 30 is, for example, various operation buttons, operation keys, a touch panel, or the like that receives input from the user. The input operation unit 30 is not limited to the one provided in the projector 1 (built in), but includes various operation buttons that accept input from the user, operation keys, a touch panel, and the like, and represents information received from the user. It may be a remote controller or the like that transmits wirelessly or by wire. In this case, the projector 1 includes a receiving unit that receives information transmitted from the remote controller.

  The storage unit 40 includes, for example, a RAM (Random Access Memory), a register, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like. The storage unit 40 stores setting item display information 42 and a light source lighting cumulative time 44. The setting item display information 42 is information in which the setting items of the projector 1 described above and the setting contents thereof are associated with each other. Further, each setting item of the setting item display information 42 is associated with information indicating whether or not to display on the setting content display image. The setting content display image is an image that is displayed before the transition to the standby mode by the projector 1 is confirmed, and is an image that displays the setting items of the projector 1 and the setting content thereof. Details of the setting content display image will be described later. The setting item display information 42 is an example of setting information. The information indicating whether or not to display on the setting content display image is an example of display enable / disable information. In the present embodiment, the setting item display information 42 is set in advance at the time of shipment from the factory. However, the setting item display information 42 is not limited to this, and the setting item display information 42 may be input by the user at the first activation or the like. .

  The accumulated light source lighting time 44 is information indicating the accumulated time when the light source lamp of the light source 12 is turned on. In the present embodiment, the accumulated light source lighting time 44 is a time accumulated in the storage unit 40 during which the light source 12 is controlled to be turned on by the control unit 50 described later. Here, when the light source lamp is replaced by the user, for example, the user manually resets the accumulated light source lighting time 44 to 0 minutes. In this case, when the accumulated light source lighting time 44 is reset, the control unit 50 accumulates the accumulated light source lighting time 44 from the time when the light source lamp is turned on after the reset.

  The control unit 50 may reset the light source lighting cumulative time 44 together with the replacement of the light source lamp by using a sensor that detects attachment / detachment of the light source lamp. Further, the light source lighting cumulative time 44 may be the cumulative number of light source lightings, the average light source lighting frequency per day, the total number of light source usage days, and the like. The light source lighting cumulative time 44 is an example of a value representing the usage status of the projector, and the cumulative usage time, the cumulative usage count, the average usage frequency, the cumulative usage days, and the like of other functional units that can be replaced by the projector 1 are also used. Good. In addition, these values may be values that can estimate the possibility that the replaceable function unit of the projector 1 will fail, or values that indicate that the replaceable function unit of the projector 1 has failed. The storage unit 40 stores various control programs executed by a CPU (Central Processing Unit) (not shown) included in the control unit 50.

  The control unit 50 includes a CPU, for example, and performs overall control of the operation of the projector 1 by operating according to a control program stored in the storage unit 40. When the projector 1 is displaying the display setting selection image, the control unit 50 selects whether or not to display the setting content from the user to the various setting items by the input operation unit 30 (displays as the setting content display image described above). Information indicating whether or not). And the control part 50 memorize | stores the received input content in the memory | storage part 40 as setting item display information 42 with a corresponding setting item and its setting content.

  Here, the display setting selection image will be described with reference to FIG. FIG. 2 is an example of a display setting selection image. As shown in FIG. 2, various setting items are displayed in the display setting selection image. The various setting items are, for example, as described above, selecting which of a plurality of luminance settings is selected, which of a plurality of color modes is selected, and whether the sleep mode is enabled or disabled. Selection of the type of input terminal, selection of whether communication is possible in the standby mode, selection of whether or not to display a logo screen at a predetermined timing (for example, when the projector 1 is activated), and the like. The user can select whether or not to display the setting content on the setting content display image for each of these setting items on the display setting selection image shown in FIG.

  Returning to FIG. When the control unit 50 receives an input for selecting the transition to the standby mode from the input operation unit 30, the control unit 50 reads the setting item display information 42 and the accumulated light source lighting time 44 from the storage unit 40 before the transition to the standby mode. Then, the control unit 50 outputs the read information to the image generation unit 92 of the OSD processing unit 90. Thereafter, when receiving an input for confirming the transition to the standby mode from the input operation unit 30, the control unit 50 controls to stop part or all of the power supply from the power supply unit 22 to each unit of the projector 1. .

  The image input terminal 60 is a plurality of image input terminals corresponding to each standard of cables connected from various image reproducing apparatuses, and outputs image information to the image signal input unit 70. When acquiring image information from the image input terminal 60, the image signal input unit 70 inputs the acquired image information to the image signal processing unit 80. The image signal processing unit 80 converts the image information input from the image signal input unit 70 into image information representing the gradation of each pixel of the liquid crystal light valve 14 for each RGB. Then, the image signal processing unit 80 outputs the converted image information to the OSD processing unit 90.

  The OSD processing unit 90 performs processing for superimposing and displaying an OSD image such as a menu image or a message image on the image information input from the image signal processing unit 80 in accordance with a request from the control unit 50. The OSD processing unit 90 includes an OSD memory (not shown), and stores OSD image information representing graphics, fonts, and the like for generating an OSD image. The OSD processing unit 90 outputs the image information on which the OSD image is superimposed to the liquid crystal driving unit 18 and causes the projection unit 10 to project the image information onto the screen SC. The OSD processing unit 90 includes an image generation unit 92, for example. When the image generation unit 92 acquires the setting item display information 42 and the light source lighting cumulative time 44 from the control unit 50, the setting content display that is displayed before the transition of the projector 1 to the standby mode is determined based on the acquired information. Generate an image. Note that one or both of the OSD processing unit 90 and the image generation unit 92 may be a hardware function unit such as an LSI (Large Scale Integration) or an ASIC (Application Specific Integrated Circuit).

  FIG. 3 is an example of a setting content display image. As shown in FIG. 3, in the setting content display image, various setting items and setting content corresponding to them are displayed. The projector 1 displays the setting content display image before the transition to the standby mode is confirmed, so that the standby mode among the plurality of types of standby modes is switched to, or the setting content of each setting item. Can be notified to the user. In FIG. 3, the setting content display image has a brightness setting of a high brightness setting, a color mode of a theater mode suitable for movie viewing, a total light source lighting time of 1235 hours, a sleep mode set to on, and until the transition to the sleep mode. The time is 15 minutes, the input terminal is the first HDMI (High Definition Multimedia Interface, registered trademark) terminal, and whether or not communication in the standby mode is communicable is displayed. In addition, although the light source lighting accumulated time which is not a setting item is also displayed on the setting content display screen, the light source lighting accumulated time may not be displayed. In addition, the setting content display image displays “Power off with the enter key” and confirms that the user enters the standby mode of the projector 1 by making a selection input to the enter key. A notice is displayed.

  Returning to FIG. The image generation unit 92 further prompts replacement of the light source lamp of the light source 12 in accordance with a request from the control unit 50 and displays a warning display image that displays precautions during the replacement operation based on the accumulated light source lighting time 44. Generate. The projector 1 can recognize that the life of the light source lamp is approaching by displaying the warning display image, and can prevent the use stop period due to the shortage of the replacement light source lamp. Moreover, the projector 1 can make a user recognize the attention accompanying the replacement | exchange operation | work of a light source lamp by the display of a warning display image. The caution accompanying the replacement work of the light source lamp is, for example, a caution to touch a hot light source lamp immediately after use.

  FIG. 4 is an example of a warning display image. As shown in FIG. 4, the warning display image displays a text for alerting the attention associated with the light source replacement work, along with text indicating that the light source is approaching the end of its life. For example, the sentence that informs that the life of the light source is approaching is “CAUTION! The cumulative lighting time of the light source will soon reach the average life”. For example, the warning message regarding the caution associated with the replacement work of the light source is “When replacing, please turn off the power for 30 minutes or more and replace the projector after it has cooled down”. The warning display image displays “Please press the enter key after confirmation”. On the other hand, when the user presses the enter key, for example, the projector 1 shifts to another screen display state, a state where the shift to the standby mode is confirmed, or the like. The following screen is displayed. FIG. 4 shows an example of a warning display image in which warnings regarding the lifetime and replacement of the light source are displayed. However, the present invention is not limited to this, and various warnings related to the projector 1 may be displayed. The various warnings are, for example, warnings regarding failures occurring in replaceable functional units of the projector 1, warnings regarding deterioration states of the respective units of the projector 1, and the like.

  Hereinafter, with reference to FIG. 5, a process in which the control unit 50 displays the setting content display image and the warning display image will be described. FIG. 5 is a flowchart illustrating an example of a flow of processing for displaying the setting content display image and the warning display image, which is executed by the control unit 50.

  First, the control unit 50 stands by until an operation for turning off the projector 1 is received from the input operation unit 30 (step S100). When the control unit 50 receives an operation to turn off the power (step S100-Yes), the control unit 50 determines whether the accumulated light source lighting time 44 stored in the storage unit 40 has exceeded a predetermined threshold (step S110). . Here, the predetermined threshold is, for example, about 90% of the average life of the light source lamp used in the light source 12, and if the average life is 1400 hours, the predetermined threshold is 1260 hours. When it is determined that the predetermined threshold value is not exceeded (step S110-No), the control unit 50 refers to the setting item display information 42, thereby “displaying” the display setting selection image shown in FIG. It is determined whether there is a setting item selected as “” (step S140).

  On the other hand, if the control unit 50 determines that the predetermined threshold value is exceeded (step S110-Yes), the control unit 50 causes the image generation unit 92 of the OSD processing unit 90 to generate the warning display image illustrated in FIG. The displayed warning display image is projected on the projection unit 10 (step S120). Next, the control unit 50 determines whether or not the user has pressed the enter key using the input operation unit 30 (step S130). When it is determined that the user has not pressed the determination key (step S130-No), the control unit 50 returns to step S130 and waits until the determination key is pressed. When the user presses the enter key (step S130-Yes), the control unit 50 proceeds to step S140, and there is a setting item selected as “display” by the user in the display setting selection image shown in FIG. It is determined whether or not to do.

  If it is determined in step S140 that there is no setting item selected as “display” by the user in the display setting selection image, the control unit 50 confirms the transition to the standby mode and sets the power supply unit 22 in the standby mode. Control is performed so as to transition to the power supply state (step S170). On the other hand, when it is determined that there is a setting item selected as “display” by the user in the display setting selection image, the control unit 50 generates a setting content display image related to the setting item selected as “display”. 92. And the control part 50 projects the setting content display image which the image generation part 92 produced | generated on the projection part 10 (step S150).

  Next, the control unit 50 determines whether or not the input operation unit 30 has accepted an operation for confirming that the power is turned off (step S160). If it is determined that the operation for confirming power-off is not accepted (step S160-No), the control unit 50 returns to step S160 and waits until the operation for confirming power-off is accepted. On the other hand, if it is determined that an operation for confirming that the power is turned off has been received (step S160—Yes), the control unit 50 proceeds to step S170 and controls the power unit 22 to transition to the power supply state in the standby mode. .

  In the example illustrated in FIG. 5, the control unit 50 displays the warning display image first and then displays the setting content display image when an operation to turn off the power is received from the user. The display order is not limited to this, and the display order may be reversed, or two images may be displayed side by side on one screen. Moreover, although the control part 50 shall display a warning display image, it is not necessary to display a warning display image. The predetermined threshold is about 90% of the average life of the light source lamp used in the light source 12, but a threshold greater than the average life may be used. In addition, when the projector 1 displays the setting content display image before the transition to the standby mode is confirmed, the projector 1 not only displays the setting content of the setting items necessary for the setting content display image, but also the setting whose setting has been changed. The setting content of the item may be displayed, or a setting item necessary for specifying the type of the standby mode may be displayed.

  As described above, when the operation for shifting to the standby mode is received by the input operation unit 30, the projector 1 according to the present embodiment controls the projection unit 10 to project the setting content display image, and the setting content. Since the power supply unit 22 is controlled to shift to the standby mode after projecting the display image, the user can be made aware of useful setting contents when shifting to the standby mode. Further, as an example, the projector 1 displays setting items necessary for specifying the type of the standby mode, so that the user can be notified of the type of the standby mode before the transition to the standby mode is confirmed. Thereby, the projector 1 can make a user grasp | ascertain in which kind of standby mode the projector 1 is waiting after transfer to standby mode.

  Further, the projector 1 controls the projection unit 10 to project a setting item associated with information indicating that the projector 1 displays the setting content display image and a setting content display image to be displayed for the setting content. Therefore, the setting item desired by the user and the setting content can be displayed before the transition to the standby mode.

  In addition, after projecting the setting content display image representing the setting item display information 42, the projector 1 is configured so that when the input operation unit 30 receives an operation for confirming the transition to the standby mode, the projector 1 is switched to the standby mode. Since the setting content display image is displayed in order to control the unit 22, it is possible to prevent a transition to the standby mode before the user grasps the displayed content.

  In addition, since the projector 1 controls the projection unit 10 to project a warning display image representing a warning about the usage status of the projector 1 before shifting to the standby mode, a warning about the usage status of the projector 1 is given by the user. It is possible to prevent the projector 1 from being used continuously without being grasped.

  In addition, when the value representing the usage state stored in the storage unit 40 exceeds a predetermined threshold, the projector 1 displays a warning that informs that the value representing the usage state has exceeded the threshold before shifting to the standby mode. Since the projection unit 10 is controlled so as to project an image, the user can be made aware of an event that may occur when the value representing the usage state exceeds the threshold before the event occurs.

  In addition, when the accumulated light source lighting time 44 exceeds a predetermined threshold, the projector 1 projects a warning display image informing that the accumulated light source lighting time 44 has exceeded the predetermined threshold before shifting to the standby mode. Therefore, before the light source lighting cumulative time 44 reaches the average life of the light source, the user can be urged to prepare a replacement light source.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and changes, substitutions, deletions, and the like are possible without departing from the gist of the present invention. May be.

DESCRIPTION OF SYMBOLS 1 Projector 10 Projection part 12 Light source 14 Liquid crystal light valve 16 Projection lens 18 Liquid crystal drive part 20 Power supply terminal 22 Power supply part 30 Input operation part 40 Storage part 42 Setting item display information 44 Light source lighting Cumulative time, 50 control unit, 60 image input terminal, 70 image signal input unit, 80 image signal processing unit, 90 OSD processing unit, 92 image generation unit

Claims (7)

An input operation unit that accepts input operations;
A power supply for supplying power to the device;
A projection unit for projecting an image;
A storage unit that stores setting items for setting the state of the device itself and setting contents thereof as setting information;
When an operation for shifting to the standby mode is accepted by the input operation unit, the projection unit is controlled to project an image representing the setting information, and after projecting an image representing the setting information, A control unit for controlling the power supply unit to shift to the standby mode;
A projector comprising: The projector according to claim 1,
Each of the setting items included in the setting information is associated with display enable / disable information indicating whether or not to display with the image representing the setting information,
The control unit controls the projection unit to project an image representing setting information displayed for the setting item and the setting content associated with display enable / disable information indicating that the setting information is displayed by an image representing the setting information. To
projector. The projector according to claim 1 or 2,
After projecting an image representing the setting information, the control unit controls the power supply unit to shift to the standby mode when an operation for confirming transition to the standby mode is accepted by the input operation unit. To
projector. The projector according to any one of claims 1 to 3,
The control unit controls the projection unit to project a warning image representing a warning regarding the usage status of the projector before shifting to the standby mode.
projector. The projector according to claim 4,
The storage unit stores a value representing a use situation regarding the projector,
The control unit controls the projection unit to project the warning image before shifting to the standby mode when the value representing the usage state stored by the storage unit exceeds a predetermined threshold. ,
The warning image is an image notifying that a value indicating the usage situation has exceeded the threshold.
projector. The projector according to claim 5, wherein
The value representing the usage status is a cumulative lighting time of a light source for performing the projection.
projector. An input operation unit that accepts an input operation, a power supply unit that supplies power to the own device, a projection unit that projects an image, a setting item that sets the state of the own device, and a storage unit that stores the setting content as setting information, The control unit of the projector comprising
When an operation for setting the standby mode is accepted by the input operation unit, the projection unit is controlled to project an image representing the setting information, and after projecting an image representing the setting information, the standby mode is entered. Controlling the power supply unit to transition,
Projector control method.

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