JP7036150B2 - Display device, display device control method and program - Google Patents

Description

The present invention relates to a display device, a control method and a program of the display device.

Conventionally, display devices have been developed (for example, Patent Document 1). In recent years, such a display device has also been studied for a portable display device that can be carried around.

Japanese Unexamined Patent Publication No. 2012-198439

By the way, when carrying a portable display device in a bag, there is a possibility that the power button may be accidentally pressed by something. When the display starts inside the bag, it consumes power unnecessarily. In addition, heat storage by the display light source causes a problem.

An object of the present invention is to prevent the display device from lighting due to an erroneous operation even when the power button is pressed when the display device is carried.

The present invention has been made in view of such a background, and can prevent lighting due to an erroneous operation even if the power button is pressed when carrying the display device, a control method and a program of the display device and the display device. The challenge is to provide.

In order to achieve the above object, the present invention
When the lighting of the display light source is started according to the user operation, a determination means for determining whether or not the connected power source is a battery power source, and
When it is determined by the determination means that the battery power supply is connected, the power-on continuation confirmation screen is displayed along with the start of lighting of the display light source, and the user who follows the power-on continuation confirmation screen displays the power-on continuation confirmation screen. A control means for continuing the lighting of the display light source on condition that the confirmation operation is detected, and
It is a display device characterized by being provided with.

According to the present invention, when carrying a display device, it is possible to prevent lighting due to an erroneous operation even if the power button is pressed.

It is a top view of the projector in this embodiment. It is a figure which shows the operation input part of a projector. It is a block diagram which shows the structure of the projector of this embodiment. It is a figure which shows the power-on continuation confirmation screen. It is a flowchart which shows the power-on process of a projector. It is a block diagram which shows the structure of the projector of the modification. It is a figure which shows the power-on interruption screen. It is a flowchart which shows the power-on processing of the projector in the modification.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to each figure.
FIG. 1 is a top view of a projector (display device) according to the present embodiment. FIG. 2 is a diagram showing an operation input unit 3 of the projector.

The shape of the projector 1 is a substantially rectangular parallelepiped, and the projection optical system 72 is provided on the front left side. The upper part of FIG. 1 is the front. An operation input unit 3 including a plurality of buttons and indicators is provided on the upper surface of the projector 1.

As shown in FIG. 2, the operation input unit 3 includes a power key 31, an input key 32, an auto key 33, a focus key 34, and a zoom key 35, and includes a POWER / STANDBY indicator 41, a LIGHT indicator 42, and a TEMP indicator 43. Further, the operation input unit 3 includes a left key 36L, an up key 36U, a right key 36R, a down key 36D, an ENTER key 37, an ESC key 38, and a menu key 39. Each key of the operation input unit 3 is composed of a tactile switch whose pressing is detected when a person presses the operation unit.

The power key 31 is a key for switching the power on and off. The POWER / STANDBY indicator 41 installed above the POWER / STANDBY indicator 41 displays a power on / off state and a state in which no image signal is input by, for example, turning on / off or blinking green and red LEDs (Light Emitting Diodes).

The input key 32 is a key for manually switching the input source. The LIGHT indicator 42 above the LIGHT indicator 42 displays the state of a laser light source, an LED, etc., which is a light source for image projection ( display light source), by turning on / off or blinking, for example, green and red LEDs. The TEMP indicator 43 indicates whether or not the temperature of the laser light source, the LED, etc., which is the light source for image projection, is in a state suitable for projection, for example, by turning on / off or blinking the green and red LEDs.

When both the LIGHT indicator 42 and the TEMP indicator 43 are lit in red, it indicates that the power is automatically turned off due to an abnormality in the fan.
When the LIGHT indicator 42 is turned off and the TEMP indicator 43 is turned on in red, it indicates that the power is automatically turned off due to an abnormality in the system. When both the LIGHT indicator 42 and the TEMP indicator 43 are blinking red at 0.5 second intervals, it indicates that the power is automatically turned off because the light source was not turned off or turned on.

The auto key 33 is a key for transitioning to a mode for automatically switching an input source. The focus key 34 is a key for setting the focus of the projected image. The zoom key 35 is a key for zooming up or down the projected image.

The left key 36L, up key 36U, right key 36R, and down key 36D can be used in combination with the focus key 34 and zoom key 35 to adjust the focus or zoom, and select menu items, manual keystone correction direction, pointer, cursor, etc. at that time. Alternatively, it is a key to be operated according to the case of instructing the moving direction. The ENTER key 37 is a key for instructing the reflection of the setting on the setting screen described later.
The ESC key 38 is a key for canceling the operation at that time. The menu key 39 is a key for instructing the display of various setting screens related to the projection operation.

FIG. 3 is a block diagram showing the configuration of the projector 1 of the present embodiment.
The projector 1 includes a control means 50, a power key 31, a power key press detection means 51, an ENTER key 37, an ENTER key press detection means 52, and a timer 54.

The control means 50 is a central processing unit that controls the projector 1 in an integrated manner. The timer 54 notifies the control means 50 that the time set in the control means 50 has elapsed. That is, the control means 50 measures the time by the timer 54.

The power key press detection means 51 detects the press after removing the chattering of the power key 31. The ENTER key press detection means 52 detects the press after removing the chattering of the ENTER key 37.

When the power key 31 is pressed, the power key press detection means 51 removes chattering, detects the press of the power key 31, and notifies the control means 50.
Similarly, when the ENTER key 37 is pressed, the ENTER key press detection means 52 removes chattering, detects the press of the ENTER key 37, and notifies the control means 50.

The projector 1 further includes a screen selection means 55, a normal screen output means 56, a power-on continuation confirmation screen output means 57, a power supply 6 connected to a commercial power supply 61 as an AC power supply or a battery power supply 62 as a DC power supply, and a light source 71. It includes a projection optical system 72.

The screen selection means 55 is, for example, a DLP (registered trademark) type device, and when any one of the normal screen output means 56 and the power-on continuation confirmation screen output means 57 is selected, the digital mirror device corresponds to the selection. To control. The light source 71 emits light. The projection optical system 72 is configured to include a plurality of lens groups, magnifies an incident optical image, and projects the incident optical image onto a projected object such as a screen.

When the light emitted from the light source 71 is applied to the screen selection means 55, the light when the individual mirrors of the digital mirror device are tilted to the ON state is magnified via the projection optical system 72, and a projected object such as a screen is projected. Projected on.

The power supply 6 is connected to a commercial power supply 61 or is equipped with a battery power supply 62 to supply power to each part of the projector 1. The commercial power supply 61 is a commercial AC power supply. The battery power supply 62 is, for example, a secondary battery or a primary battery, and is attached to the power supply 6 when the projector 1 is carried and used.

Since the inside of the projector 1 is operated by direct current, when using the commercial power supply 61 as an AC power supply, it is necessary to convert the AC voltage (AC voltage) into a DC voltage (DC voltage) and drive it. .. In this case, an AC / DC conversion unit, which is a circuit for converting AC voltage to DC voltage, may be built in the power supply 6 of the projector 1, or a type that converts AC voltage with an externally attached adapter, a so-called AC power supply, may be installed. An AC adapter (AC-DC adapter) that converts to a DC power supply may be used. When an AC output AC-AC adapter for the purpose of transformation only is used, it is necessary to provide an AC / DC conversion unit inside the power supply 6 of the projector 1.

The power supply 6 further includes a determination means 60 for determining whether or not the battery power supply 62 is connected to the power supply 6. The determination means 60 determines that the commercial power supply 61 is connected because, for example, the AC / DC conversion unit is operating, and the battery power supply 62 is connected because the AC / DC conversion unit is stopped. It is a circuit that determines that it is doing. The determination result by the determination means 60 is output to the control means 50.

When the control means 50 is notified that the power key 31 is pressed and the determination means 60 determines that the battery power supply 62 is connected, the control means 50 powers on the screen selection means 55 with the start of lighting of the light source 71. The continuation confirmation screen output means 57 is selected, and the timer 54 is started. The control means 50 is not limited to the case where it is determined that the battery power supply 62 is connected, but when it is determined that the DC power supply is connected, the screen selection means is accompanied by the start of lighting of the light source 71. The power-on continuation confirmation screen output means 57 may be selected by 55, and the timer 54 may be started. At this time, the control means 50 may turn on while suppressing the output of the light source 71. As shown in the example of FIG. 4, the power-on continuation confirmation screen projected at this time is preferably a screen in which the ratio of the black area that suppresses the light output as a whole is large. It is desirable that the light output of the light source on the power-on continuation confirmation screen is suppressed more than the light output of the light source when the input signal is projected on the screen.

After that, the control means 50 waits for the ENTER key press detection means 52 to detect the press of the ENTER key 37. When the timer 54 times out while waiting for the press of the ENTER key 37, the control means 50 turns off the light source 71 and turns off the power supply 6.

Before the timer 54 times out, the control means 50 sets the screen selection means 55 to the normal screen output means 56 on condition that the press of the ENTER key 37, which is a confirmation operation from the user according to the power-on continuation confirmation screen, is detected. Is selected to continue lighting the light source 71, and the projector 1 operates as a normal projector 1. Here, the operation as a normal projector means to project the screen of the input signal or the screen when there is no signal.

Here, the ENTER key 37 functions as a key for confirming the continuation of power-on. The key for confirming the continuation of power-on may be a key different from the power key 31, and is not limited to the ENTER key 37.

The control means 50 is notified that the power key 31 is pressed, and the determination means 60 notifies the commercial power source.
When it is determined that the 61 is connected, the display of the power-on continuation confirmation screen is omitted and the lighting of the light source 71 is continued. As a result, the user can start using the projector 1 by omitting the confirmation operation immediately after the power is turned on.

FIG. 4 is a diagram showing a power-on continuation confirmation screen 81.
The background of the power-on continuation confirmation screen 81 is black, and a rectangle whose center is separated by a line is arranged. Guidance is displayed at the top of the rectangle, "Are you sure you want to turn on the power?", And "Confirm: [Enter]" is displayed at the bottom of the rectangle. When the user presses the ENTER key 37 according to this guidance, the projection of the screen of the input signal or the projection of the screen when there is no signal is started as a normal projector.

The power-on continuation confirmation screen 81 should have a high black ratio, generate little heat even when projected, and have a light intensity that does not damage the storage case of the projector 1. As a result, the amount of heat at the time of projection of the power-on continuation confirmation screen 81 can be set to a predetermined value or less that can avoid damage to the storage case.

Unlike a normal device, the projector 1 of the present embodiment does not start operation as a normal projector only by pressing the power key 31. The power-on continuation confirmation screen 81 allows the operator of the projector 1 to easily know what kind of operation is used to operate the projector as a normal projector.

FIG. 5 is a flowchart showing the power-on processing of the projector 1, and the block diagram of FIG. 3 is appropriately referred to. This flowchart shows each process when the central processing unit, which is the control means 50, executes the control program of the projector 1.
At the start of processing, the projector 1 is in a standby state or a standby state called a sleep state, and the light source 71 is not lit, but the control means 50 is operating.

The control means 50 determines whether or not the power key press detection means 51 has detected the press of the power key 31 (S10). The control means 50 repeats the process of step S10 if the power key press detection means 51 does not detect the press of the power key 31 (No), and if it detects the press of the power key 31 (Yes), the control means 50 stands by. The state is released (S11). Further, the control means 50 turns on the light source 71 and starts the timer 54 (S12). The timer 54 measures a predetermined time after the projection of the power-on continuation confirmation screen.

In step S13, the determination means 60 determines whether or not the power source connected to the power source 6 is a predetermined power source, that is, the battery power source 62 when the lighting of the light source 71 ( display light source) is started in response to the user operation. Determines whether or not it is driven by. If the control means 50 is driven by connecting the commercial power supply 61 to the power supply 6 and the battery power supply 62 is not connected (No), the process proceeds to step S18, and the input signal screen and the no-signal screen are displayed. After displaying the normal screen, which is one of the above, the mode shifts to the normal projection operation mode. If the battery power supply 62 is connected to the power supply 6 and is driven by the battery power supply 62 (Yes), the control means 50 proceeds to step S14.

When the power supply 6 is driven by the commercial power supply 61, the control means 50 skips the detection of pressing the ENTER key 37 and immediately displays a normal screen which is either an input signal screen or a no-signal screen. indicate. As a result, the user can skip unnecessary confirmation operations when driving the commercial power supply 61.

In step S14, when the determination means 60 determines that a predetermined power source is connected, the control means 50 displays the power-on continuation confirmation screen 81 of FIG. 4 by projection as the light source 71 starts lighting. Let me. Further, the control means 50 determines whether or not the ENTER key press detection means 52 has detected the press of the ENTER key 37 (S15).

If the ENTER key 37 is not pressed (No), the control means 50 proceeds to step S16 and determines whether or not the specified time has elapsed. Here, the control means 50 determines the passage of a predetermined time by time-up of the timer 54. That is, the control means 50 measures the predetermined time after the projection of the power-on continuation confirmation screen by the timer 54.

In step S16, the control means 50 returns to the process of step S15 if (No) before the lapse of the specified time. If the detection of the confirmation operation from the user according to the power-on continuation confirmation screen is not detected within a predetermined time, that is, if the specified time has elapsed (Yes), the control means 50 has a light source 71 (light source for display ). Is turned off at a predetermined timing (S17), and the state shifts to the standby state.

In step S15, if the ENTER key 37 is pressed (Yes) as the detection of the confirmation operation from the user according to the power-on continuation confirmation screen, the control means 50 proceeds to step S18, and proceeds to the input signal screen and no signal. After the normal screen, which is one of the screens of the time, is continuously displayed by lighting the light source 71, the mode shifts to the normal projection operation mode. Here, the ENTER key press detection means 52 functions as a confirmation operation detecting means for detecting a confirmation operation of turning on the power.

When the projector 1 is driven by the battery power supply 62, the projector 1 normally performs a projection operation by pressing the power key 31 and then pressing the ENTER key 37 within a specified time. Unless a predetermined key operation sequence is detected in this way, the normal projection operation is not performed. When the power key 31 is accidentally pressed in the storage case, it is rare that the press of the ENTER key 37 is detected within the specified time. Therefore, the projector 1 can distinguish between the case where the power key 31 is pressed by a human operation and the case where the power key 31 is accidentally pressed in the storage case. As a result, when carrying the projector 1, it is possible to prevent the projector 1 from being turned on by an erroneous operation even if the power key 31 is pressed.

<< Modification example >>
In the above embodiment, when the operation input unit 3 is pressed in the storage case and the pressing of both the power key 31 and the ENTER key 37 is detected, the light may be erroneously turned on. In such cases, other keys may also be pressed. This modification further distinguishes the case where the power key 31 is pressed by a human operation and the case where the operation input unit 3 is accidentally pressed in the storage case.

FIG. 6 is a block diagram showing the configuration of the projector 1A of the modified example.
In addition to the projector 1 shown in FIG. 3, the projector 1A of the modified example further includes other keys and other key press detection means 53, and a power-on interruption screen output means 58.
The other keys are keys other than the power key 31 and the ENTER key 37, and are the input key 32, the auto key 33, the focus key 34, the zoom key 35, the left key 36L, the up key 36U, the right key 36R, the down key 36D, and the ESC. The key 38 and the menu key 39.

FIG. 7 is a diagram showing a power-on interruption screen 82.
The background of the power-on interruption screen 82 is black, and a white rectangular border is arranged. Guidance is displayed on this rectangle, "The power-on is interrupted by detecting the press of another key." With this guidance, the user can detect that the power was turned on in an incorrect sequence. The projector 1A projects the power-on interruption screen 82 for a predetermined period, and then transitions to the standby state.

The power-on interruption screen 82 should have a high black ratio, generate little heat even when projected, and have a light intensity that does not damage the storage case of the projector 1A. It is desirable that the light output of the light source on the power-on interruption screen 82 is suppressed more than the light output of the light source when the input signal is projected on the screen.
The power-on interruption screen 82 allows the operator of the projector 1A to recognize that the power-on has been interrupted due to an erroneous operation.

FIG. 8 is a flowchart showing a power-on process of the projector 1A in the modified example.
At the start of the process, the projector 1A is in the standby state, the light source 71 is not lit, but the control means 50 is operating.

The control means 50 determines whether or not the power key press detection means 51 has detected the press of the power key 31 (S30). If the power key pressing detecting means 51 does not detect the pressing of the power key 31 (No), the control means 50 repeats the process of step S30, and if the pressing of the power key 31 is detected (Yes), the control means 50 repeats the process. The standby state is released (S31).

Then, the control means 50 determines whether or not the press of the ENTER key 37 or another key is detected by the ENTER key press detection means 52 or the other key press detection means 53 (S32). If the control means 50 detects the pressing of the ENTER key 37 or another key (Yes), the process returns to the process of step S30, and if the pressing of the ENTER key 37 or another key is not detected (No), the control means 50 returns to the process. The process proceeds to step S33.

When the power key 31 is pressed by human operation, no other keys are pressed. On the other hand, when the operation input unit 3 is pressed in the storage case, it is considered that the power key 31 is pressed and other keys are also pressed. In the processing of the modified example, when the power key 31 is pressed, the press of the ENTER key 37 or another key is detected, so that the power is turned on by a human operation and the other keys of the operation input unit 3 are erroneously pressed. It is a distinction from the case. When the power key 31 and other keys are accidentally pressed, the projector 1A of the modified example does not turn on the power regardless of whether or not the ENTER key 37 is pressed. As a result, the projector 1A can more preferably suppress erroneous lighting during transportation.

In step S33, the control means 50 turns on the light source 71 and starts the timer 54. The timer 54 measures a predetermined time after the projection of the power-on continuation confirmation screen.

In step S34, the determination means 60 determines whether or not the power source connected to the power source 6 is a predetermined power source, that is, the battery power source 6 when the lighting of the display light source is started in response to the user operation.
It is determined whether or not it is driven by 2. If the control means 50 is driven by connecting the commercial power supply 61 to the power supply 6 and the battery power supply 62 is not connected (No), the process proceeds to step S41, and the input signal screen and the no-signal screen are displayed. After displaying the normal screen, which is one of the above, the mode shifts to the normal projection operation mode. If the battery power supply 62 is connected to the power supply 6 and is driven by the battery power supply 62 (Yes), the control means 50 proceeds to step S35.

In step S35, when the determination means 60 determines that a predetermined power source, that is, the battery power source 62 is connected, the control means 50 confirms the continuation of power-on in FIG. 4 with the start of lighting of the light source 71. The screen 81 is displayed by projection. The projection of the power-on continuation confirmation screen 81 may be performed immediately after the power key of S30 is pressed, or immediately after the battery-powered determination is made in S34. Further, the control means 50 determines whether or not the ENTER key press detection means 52 has detected the press of the ENTER key 37 (S36).
If the ENTER key 37 has not been pressed (No), the control means 50 proceeds to step S37.

In step S37, the control means 50 determines whether or not the press of the power key 31 or another key is detected (S37). If the control means 50 detects that the power key 31 or another key is pressed (Yes), the control means 50 displays the power-on interruption screen 82 of FIG. 7 (S38), turns off the light source 71 (S40), and stands by. Transition to the state. If the control means 50 does not detect the pressing of the power key 31 or another key (No), the process proceeds to the process of step S39.

In step S39, the control means 50 determines whether or not the specified time has elapsed. Here, the control means 50 determines the passage of a predetermined time by time-up of the timer 54. If the control means 50 has not elapsed the specified time (No), the control means 50 returns to the process of step S36. When the time has elapsed (Yes), the light source 71 is turned off (S40), and the state transitions to the standby state.

In step S36, if the ENTER key 37 is pressed (Yes) as a detection of the confirmation operation from the user according to the power-on continuation confirmation screen, the control means 50 proceeds to step S41 and continues lighting the light source 71. Let me. That is, after displaying the normal screen which is either the screen of the input signal or the screen when there is no signal, the mode shifts to the normal projection operation mode.

The projector 1A of the modified example can detect the case where the power key 31 and the ENTER key 37 are pressed at the same time by mistake, or the case where the other keys are pressed together. The user can be notified by the on interruption screen 82.

Further, the projector 1A can more accurately distinguish between pressing the power key 31 by human operation and pressing the power key 31 by mistake. As a result, when carrying the projector 1, it is possible to prevent the projector 1 from being turned on by an erroneous operation even if the power key 31 is pressed.

(Modification example)
The present invention is not limited to the above embodiment, and can be modified without departing from the spirit of the present invention. For example, there are the following (a) to (c).
(A) The heat generation may be reduced by suppressing the amount of light from the light source during the projection of the confirmation screen. (B) The confirmation of turning on the power is not limited to the ENTER key configured by the tactile switch, and the detection of any operation is detected. May be confirmed by.
(C) The state that transitions when the confirmation of power-on fails is not limited to the standby state in which the power of the projector and a part of the control means are operating, but is the power-off state in which the power of the projector is off. There may be.

In the above embodiment, as an example for preventing lighting due to an erroneous operation even when the power button is pressed when carrying the projector, an example of a display light source that projects using the light source of the projector is shown. However, it is not limited to this configuration. For example, a display light source that displays a screen (screen lighting), such as a liquid crystal display that illuminates a liquid crystal with a backlight using a white light emitting LED from the back, or an EL display that uses fluorescence or phosphorescence emitted by applying a voltage as a light emitting source. The same effect can be obtained even with a display device using the above.

The inventions described in the claims originally attached to the application of this application are described below. The claims described in the appendix are the scope of the claims originally attached to the application for this application.

[Additional Notes]
<< Claim 1 >>
When the lighting of the display light source is started according to the user operation, the determination means for determining whether or not the connected power source is a predetermined power source, and
When it is determined by the determination means that the predetermined power source is connected, the power-on continuation confirmation screen is displayed along with the start of lighting of the display light source, and the user who follows the power-on continuation confirmation screen. A control means for continuing the lighting of the display light source on condition that the confirmation operation is detected from
A display device characterized by comprising.
<< Claim 2 >>
The control means is characterized in that, when the detection of the confirmation operation from the user according to the power-on continuation confirmation screen is not detected within a predetermined time, the display light source is turned off at a predetermined timing. The display device according to claim 1.
<< Claim 3 >>
When the determination means determines that a power source different from the predetermined power source is connected, the control means omits the display of the power-on continuation confirmation screen and continues to light the display light source. Let, let
The display device according to claim 1 or 2.
<< Claim 4 >>
The predetermined power supply is a battery power supply or a DC power supply.
The display device according to any one of claims 1 to 3, wherein the display device is characterized by the above.
<< Claim 5 >>
The control means displays an input signal screen or a no-signal screen when the confirmation operation is detected within a predetermined time after the power-on continuation confirmation screen is displayed.
The display device according to any one of claims 1 to 4, wherein the display device is characterized by the above.
<< Claim 6 >>
The lighting of the display light source is started by pressing the power key.
When the control means detects that the power key is pressed while the predetermined power supply is driven by a DC power supply, the control means turns on the display light source and displays an input signal screen or a screen when there is no signal.
The display device according to any one of claims 1 to 5, wherein the display device is characterized by the above.
<< Claim 7 >>
When the control means detects the pressing of the power key, if the pressing of a key other than the power key is detected within a predetermined time, the control means does not turn on the display light source.
The display device according to claim 6.
<< Claim 8 >>
The power-on continuation confirmation screen includes guidance for a power-on confirmation operation.
The display device according to any one of claims 1 to 7.
<< Claim 9 >>
The state in which the display light source is turned off is a standby state or a sleep state, and the control means is operating.
The display device according to any one of claims 1 to 8, wherein the display device is characterized by the above.
<< Claim 10 >>
The control means suppresses the light output of the display light source when the power-on continuation confirmation screen is displayed more than the light output of the display light source when the input signal screen is displayed.
The display device according to any one of claims 1 to 9.
<< Claim 11 >>
The amount of heat when the power-on continuation confirmation screen is displayed is equal to or less than a predetermined value.
The display device according to any one of claims 1 to 10.
<< Claim 12 >>
When the lighting of the display light source is started according to the user operation, the step of determining whether or not the connected power supply is a predetermined power supply, and
When it is determined that the predetermined power supply is connected, the step of displaying the power-on continuation confirmation screen with the start of lighting of the display light source, and
The step of continuing the lighting of the display light source on condition that the confirmation operation from the user according to the power-on continuation confirmation screen is detected, and
A display device control method characterized by performing.
<< Claim 13 >>
For computers equipped with a display light source and display unit,
A procedure for determining whether or not the connected power supply is a predetermined power supply when the lighting of the display light source is started in response to a user operation.
A procedure for displaying a power-on continuation confirmation screen by the display unit when it is determined that the predetermined power source is connected, when the display light source starts lighting.
A procedure for continuing lighting of the display light source on condition that a confirmation operation from the user according to the power-on continuation confirmation screen is detected.
A program to execute.

1 Projector (display device)
3 Operation input section 31 Power key 32 Input key 33 Auto key 34 Focus key 35 Zoom key 36L Left key 36U Up key 36R Right key 36D Down key 37 ENTER key 38 ESC key 39 Menu key 41 POWER / STANDBY indicator 42 LIGHT indicator 43 TEMP indicator 50 Control means 51 Power key press detection means 52 ENTER key press detection means (detection means)
53 Other key press detection means 54 Timer 55 Screen selection means 56 Normal screen output means 57 Power on continuation confirmation screen output means 58 Power on interruption screen output means 6 Power supply 60 Judgment means 61 Commercial power supply 62 Battery power supply 71 Light source (light source for display)
72 Projection optical system 81 Power on continuation confirmation screen 82 Power on interruption screen

Claims (12)

When the lighting of the display light source is started according to the user operation, a determination means for determining whether or not the connected power source is a battery power source, and
When it is determined by the determination means that the battery power supply is connected, the power-on continuation confirmation screen is displayed along with the start of lighting of the display light source, and the user who follows the power-on continuation confirmation screen displays the power-on continuation confirmation screen. A control means for continuing the lighting of the display light source on condition that the confirmation operation is detected, and
A display device characterized by comprising. The control means is characterized in that, when the detection of the confirmation operation from the user according to the power-on continuation confirmation screen is not detected within a predetermined time, the display light source is turned off at a predetermined timing. The display device according to claim 1. When the determination means determines that a power source different from the battery power source is connected, the control means omits the display of the power-on continuation confirmation screen and keeps the display light source lit. ,
The display device according to claim 1 or 2. The control means displays an input signal screen or a no-signal screen when the confirmation operation is detected within a predetermined time after the power-on continuation confirmation screen is displayed.
The display device according to any one of claims 1 to 3, wherein the display device is characterized by the above. The lighting of the display light source is started by pressing the power key.
When the control means detects that the power key is pressed while being driven by the battery power supply, the control means turns on the display light source and displays an input signal screen or a screen when there is no signal.
The display device according to any one of claims 1 to 4, wherein the display device is characterized by the above. When the control means detects the pressing of the power key, if the pressing of a key other than the power key is detected within a predetermined time, the control means does not turn on the display light source.
The display device according to claim 5. The power-on continuation confirmation screen includes guidance for a power-on confirmation operation.
The display device according to any one of claims 1 to 6, wherein the display device is characterized by the above. The state in which the display light source is turned off is a standby state or a sleep state, and the control means is operating.
The display device according to any one of claims 1 to 7. The control means suppresses the light output of the display light source when the power-on continuation confirmation screen is displayed more than the light output of the display light source when the input signal screen is displayed.
The display device according to any one of claims 1 to 8, wherein the display device is characterized by the above. The amount of heat when the power-on continuation confirmation screen is displayed is equal to or less than a predetermined value.
The display device according to any one of claims 1 to 9. When the lighting of the display light source is started according to the user operation, the step of determining whether or not the connected power source is a battery power source, and
When it is determined that the battery power supply is connected, the step of displaying the power-on continuation confirmation screen with the start of lighting of the display light source, and
The step of continuing the lighting of the display light source on condition that the confirmation operation from the user according to the power-on continuation confirmation screen is detected, and
A display device control method characterized by performing. For computers equipped with a display light source and display unit,
A procedure for determining whether or not the connected power supply is a battery power supply when the lighting of the display light source is started in response to a user operation.
A procedure for displaying a power-on continuation confirmation screen by the display unit when it is determined that the battery power supply is connected, when the display light source starts lighting.
A procedure for continuing lighting of the display light source on condition that a confirmation operation from the user according to the power-on continuation confirmation screen is detected.
A program to execute.

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