JP6369082B2 - Projector, display device, and projector control method - Google Patents

Description

The present invention relates to a projector that projects an image, a display device, and a projector control method.

Conventionally, an image based on an image signal output from a computer or the like is displayed on a screen or the like by a display device such as a projector, and the display device detects a user operation performed on a projected image using an electronic pen. There has been proposed an electronic blackboard system (interactive system) that generates and displays an image based on information related to the operation of the system (for example, Patent Document 1).

JP 2011-140154 A

However, in an apparatus such as Patent Document 1, a dedicated remote controller (remote controller) is required to perform projector-specific settings, for example, adjustment of projection image quality and internal setting item change operations. There was a problem that both the remote control and the remote control had to be changed. For this reason, there has been a demand for a projector that can perform drawing on the projection surface and an operation for changing the setting items of the projector using only the electronic pen.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A projector according to this application example is a projector having an image projection unit that modulates light emitted from a light source according to image information and projects the light onto a projection surface, and is projected by the image projection unit. In the projected image, position detecting means for detecting the position indicated by the indicator, a drawing mode for drawing in the projected image according to the position, or a plurality of setting items of the projector according to the position are set. A mode setting means for setting any of the menu setting modes to be performed, wherein the mode setting means switches the mode when the position is in a specific area in the projected image. To do.

According to this application example, the mode setting means according to the operation position of the electronic pen as the indicator,
It is possible to switch between a drawing mode for drawing in a projected image on the projection surface and a menu setting mode for changing setting items of the projector. Therefore, it is possible to realize a projector that can perform both a drawing operation and a projector setting operation using only the electronic pen.

Application Example 2 In the projector according to the application example described above, it is preferable that the image projection unit projects a setting screen for setting the setting items in the menu setting mode.

According to this application example, since the setting screen for setting the setting items of the projector is projected, the menu setting operation with the electronic pen can be easily performed.

Application Example 3 In the projector according to the application example, it is preferable that the image projecting unit changes a projection position of the setting screen according to the position in the specific area.

According to this application example, since the projection position of the setting screen can be changed by the operation position of the electronic pen, the setting screen can be displayed at a position that does not hinder the screen being drawn.

Application Example 4 In the projector according to the application example described above, the image projection unit projects a screen for switching to the drawing mode or the menu setting mode when the projector is turned on, and the mode setting unit includes: The mode switching is preferably performed when a predetermined switching operation is detected on the switching screen.

According to this application example, when the projector is turned on, the screen for switching to the drawing mode or the menu setting mode is displayed and the user is notified of the switching method, so that the usability is improved.

Application Example 5 A projector control method according to this application example is a projector control method including an image projection unit that modulates light emitted from a light source according to image information and projects the light onto a projection surface. In the projection image projected by the image projection means, a position detection step for detecting the position indicated by the indicator, a drawing mode for drawing in the projection image in accordance with the position, or a projector in accordance with the position A mode setting step for setting one of a menu setting mode for setting a plurality of setting items, and a control step for switching the mode by the mode setting step when the position is in a specific region in the projection image It is characterized by having.

According to this application example, the position detection step of detecting the operation position of the electronic pen as the indicator,
A mode setting step for setting one of the drawing mode for drawing on the projection surface and the menu setting mode for changing the setting items of the projector, and control for switching to the drawing mode or the menu setting mode according to the position detected by the position detection step. By including the steps, it is possible to perform both the drawing operation and the projector setting operation using only the electronic pen.

Application Example 6 A display device according to this application example is a display device having image display means for displaying an image according to image information, and an indicator is displayed in the display image displayed by the image display means. One of position detection means for detecting a pointing position, a drawing mode for drawing in the display image according to the position, or a menu setting mode for setting a plurality of setting items of the display device according to the position Mode setting means for setting the mode, and the mode setting means switches the mode when the position is in a specific area in the display image.

According to this application example, the mode setting unit can switch between the drawing mode for drawing in the display image and the menu setting mode for changing the setting item of the display device according to the position indicated by the indicator. . Therefore, it is possible to realize a display device that can perform both the drawing operation and the setting operation of the display device with only the indicator.

Explanatory drawing which shows the usage condition of the projector which concerns on embodiment. The external view of an electronic pen. The figure which shows the screen transition of a projector. The block diagram which shows the circuit structure of a projector. The flowchart which shows operation | movement of a projector. The figure which shows the mode switching screen projected when a power supply is turned on. The figure which shows the display screen of the menu setting mode which concerns on the modification 1. FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The following embodiments do not limit the invention according to the claims,
Not all combinations of features in the embodiments are essential for the solution of the invention.

(Embodiment)
FIG. 1 is an explanatory diagram showing a usage pattern of the projector 1 of the present embodiment.
As shown in FIG. 1, the projector 1 is suspended from a user H, and the user H performs a drawing operation using the electronic pen 40 on the projection surface SC on which the projector 1 projects an image. The projector 1 detects operation information such as a position indicated by the electronic pen 40 by a pen operation detection unit 25 (see FIG. 4) described later. The projector 1 is an electronic pen 4
Drawing data based on the drawing operation of 0 is combined with image information and projected onto the projection screen SC. Note that the electronic pen 40 in the present embodiment corresponds to an indicator.

FIG. 2 is an external view of the electronic pen 40.
As shown in FIG. 2, the electronic pen 40 is housed in a pen-shaped housing 40A having a sharp tip, and includes a pen tip switch 40B and a light emitting unit 40C that emits infrared light at the tip of the housing 40A. ing.

FIG. 3 is a diagram showing screen transitions of the projector 1 according to the present embodiment, and (a) and (d)
FIG. 7 is a diagram showing a display state in a drawing mode, (b) and (e) are display states in a menu setting mode, and (c) is a view showing an example of a display state at the time of setting in the menu setting mode.

As shown in FIG. 3A, in the drawing mode, drawing data is created in the drawing area G1 on the projection surface SC based on the operation of the electronic pen 40. In this state, when the specific area G2 on the right side of the projection screen SC is tapped (pen down) with the electronic pen 40, the mode is changed to the menu setting mode in FIG.

As shown in FIG. 3B, a list of setting items to be set is displayed in the menu setting mode. When contrast adjustment is selected from the setting item list in FIG. 3B, FIG.
).

FIG. 3C is an example of a setting screen in the menu setting mode, and shows a screen during contrast adjustment. In this state, the contrast adjustment is performed by operating the slide bar GS with the electronic pen 40.
When the specific area G2 is tapped with the electronic pen 40 in the menu setting mode of FIGS. 3B and 3C, the setting item list and the setting screen are deleted, and the drawing mode of FIG. FIG. 3D shows a display state when returning from the menu setting mode to the drawing mode.

FIG. 3B shows a screen when the display area is changed to the menu setting mode by tapping the upper and lower central portions of the specific area G2 with the electronic pen 40 in the drawing mode, and the drawing shown in FIGS. 3A and 3D. In the mode, when the vicinity of the upper end of the specific region G2 is tapped with the electronic pen 40, FIG.
).
As shown in FIG. 3E, when the upper end of the specific area G2 is tapped with the electronic pen 40, the menu setting screen is displayed on the upper side. That is, the setting screen can be displayed at a user's desired position in the menu setting mode.

FIG. 4 is a block diagram illustrating a circuit configuration of the projector 1 according to the present embodiment.
As shown in FIG. 4, the projector 1 includes an image input terminal 6, an image projection means 10, an OSD.
The processing means 16, the image signal processing means 17, the image signal input means 18, the control means 20, the storage means 21, the light source control means 22, the input operation means 23, the pen operation detection means 25, the power supply terminal 30, the power supply unit 31, etc. These are housed inside or outside the housing of the projector 1 (not shown).

The image projection means 10 includes a light source 11 and three liquid crystal light valves 12R as light modulators.
12G, 12B, a projection lens 13 as a projection optical system, liquid crystal driving means 14 and the like. The image projection means 10 converts the light emitted from the light source 11 into liquid crystal light valves 12R and 12G.
, 12B and projecting from the projection lens 13, an image is displayed on the projection surface SC or the like.

The light source 11 includes a discharge-type light source lamp 11a made of an ultra-high pressure mercury lamp, a metal halide lamp, or the like, and a reflector 11b that reflects light emitted from the light source lamp 11a toward the liquid crystal light valves 12R, 12G, and 12B. ing.
Light emitted from the light source 11 is converted into light having a substantially uniform luminance distribution by an integrator optical system (not shown), and red (R), which is the three primary colors of light, by a color separation optical system (not shown),
After being separated into green (G) and blue (B) color light components, the liquid crystal light valve 12R respectively.
, 12G, 12B.

The liquid crystal light valves 12R, 12G, and 12B are configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. In the liquid crystal light valves 12R, 12G, and 12B, a plurality of pixels (not shown) arranged in a matrix are formed, and a driving voltage can be applied to the liquid crystal for each pixel.
When the liquid crystal driving unit 14 applies a driving voltage corresponding to the input image information to each pixel, each pixel is set to a light transmittance corresponding to the image information. Therefore, the light emitted from the light source 11 is modulated by passing through the liquid crystal light valves 12R, 12G, and 12B, and image light corresponding to image information is formed for each color light.
The formed image light of each color is synthesized for each pixel by a color synthesis optical system (not shown) to become color image light, and then enlarged and projected onto the projection surface SC or the like by the projection lens 13.

In the present embodiment, the projector 1 that projects using the light source lamp 11 a as the light source 11.
However, the present invention can also be applied to a projector that projects using a light emitting diode (LED) light source or a laser light source as a light source.

In the present embodiment, the image projection unit 10 includes three liquid crystal light valves 12R and 12G.
, 12B is used as an example, but a light modulation device of another display system such as a reflective liquid crystal display system or a micromirror device system (light switch display system) may be employed. .

The image signal input means 18 receives image information from a plurality of image input terminals 6 from an external image output device such as a video reproduction device or a personal computer via a cable (not shown) or a communication device. The input image information is output to the image signal processing unit 17 based on an instruction from the control unit 20. Note that the image signal input unit 18 may include a receiving unit for wireless communication, optical communication, or the like, and input an image signal wirelessly from an external device.

The image signal processing unit 17 converts the image information input from the image signal input unit 18 into image information representing the gradation of each pixel of the liquid crystal light valves 12R, 12G, and 12B based on an instruction from the control unit 20. Here, the converted image information is classified into red (R), green (G), and blue (B) color lights, and a plurality of pixels corresponding to all the pixels of the liquid crystal light valves 12R, 12G, and 12B. Consists of values. The pixel value defines the light transmittance of the corresponding pixel, and the intensity (gradation) of light transmitted through each pixel and emitted is defined by this pixel value.

The OSD processing unit 16 performs processing for superimposing and displaying an OSD (on-screen display) image such as a menu image or a message image on the projection image based on an instruction from the control unit 20. The OSD processing means 16 includes an OSD memory (not shown)
OSD image information representing graphics, fonts, and the like for forming a D image is stored.

When the control unit 20 instructs to superimpose the OSD image, the OSD processing unit 16 reads necessary OSD image information from the OSD memory, and outputs an image signal so that the OSD image is superimposed at a predetermined position on the projected image. The OSD image information is synthesized with the image information input from the processing means 17. The image information combined with the OSD image information is output to the liquid crystal driving means 14.
If there is no instruction to superimpose the OSD image from the control means 20, the OSD processing means 16 directly uses the image information input from the image signal processing means 17 as the liquid crystal driving means 14.
Output to.

When the liquid crystal driving unit 14 drives the liquid crystal light valves 12R, 12G, and 12B in accordance with the image information input from the OSD processing unit 16, the liquid crystal light valves 12R, 12G, and 12B are driven.
Forms an image according to the image information, and this image is projected from the projection lens 13.

The control means 20 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used for temporary storage of various data, and the like, and operates according to a control program (not shown) stored in the storage means 21. As a result, the overall operation of the projector 1 is controlled. That is, the control unit 20 functions as a computer together with the storage unit 21. The control unit 20 includes a mode setting unit 201 that sets one of a drawing mode for drawing the projector 1 according to the operation position of the electronic pen 40 and a menu setting mode for changing a plurality of setting items of the projector 1.

The storage means 21 is composed of a rewritable nonvolatile memory such as a flash memory or FeRAM, a control program for controlling the operation of the projector 1, various setting data for defining the operating conditions of the projector 1, etc. Is remembered.

The light source control unit 22 controls the supply and stop of power to the light source 11 based on an instruction from the control unit 20, and switches between turning on and off the light source 11.

The input operation means 23 includes a plurality of operation keys for the user to give various instructions to the projector 1. Although not shown, the input operation means 23 includes a plurality of operation keys for a user to give various instructions to the projector 1, and is a main body key provided on the outer surface of a housing (not shown) of the projector 1. Composed.

The operation keys of the input operation means 23 include a power key for alternately switching on / off the power, an input switching key for switching a plurality of image input terminals 6, and a menu for displaying a setting menu in a superimposed manner. There are a direction key (four operation keys corresponding to up / down / left / right) used for selecting an item in a key, a setting menu, etc., a determination key for confirming a selected item, a cancel key for canceling an operation, and the like.
In the present embodiment, the same operation as the menu operation is performed by operating the electronic pen 40 in the menu setting mode.

When the user operates various operation keys of the input operation unit 23, the input operation unit 23 outputs an operation signal corresponding to the operation content of the user to the control unit 20. The input operation means 23 may have a configuration including a remote controller (remote control) signal receiving means (not shown) and a remote controller (not shown) capable of remote operation. In this case, the remote controller emits an operation signal such as an infrared ray according to the operation content of the user, and the remote control signal receiving means receives it and transmits it to the control means 20 as control information.

The pen operation detection unit 25 corresponds to a position detection unit, and includes an image sensor (not shown). Based on an instruction from the control unit 20, an operation position (coordinates) of the electronic pen 40 and a pen tip switch 40B. A pen operation state such as a pressed state (see FIG. 2) is detected, and the detected pen operation information is notified to the control means 20.

Power such as AC 100 V is supplied to the power supply unit 31 from the outside through the power supply terminal 30.
The power supply unit 31 converts, for example, a commercial power supply (AC power supply) into a DC power supply having a predetermined voltage, and supplies the converted power to each unit of the projector 1. In addition, the power supply unit 31 stops supplying power (operating power) necessary for image projection to each unit (power-on state) and operating power supply based on an instruction from the control unit 20. It is possible to switch between a state (standby state) of waiting for an operation for turning on.

Next, the operation of the projector 1 of the present embodiment will be described using the flowchart of FIG.
5A and 5B are flowcharts showing the operation of the projector 1. FIG. 5A shows the operation when the pen-down operation of the electronic pen 40 is detected, and FIG. 5B shows the operation when the projector 1 is turned on.

[Operation when pen-down operation is detected]
As shown in FIG. 5A, when the pen operation detecting unit 25 detects a pen down operation (pen tap) of the electronic pen 40 while the projector 1 is operating (step S101), the process proceeds to step S102.

In step S102, the control unit 20 acquires the operation position of the electronic pen 40 from the pen operation detection unit 25, and the process proceeds to step S103. Step S102 corresponds to a position detection step.

In step S103, the control unit 20 checks whether or not the operation position of the electronic pen 40 acquired in step S102 is in the specific region G2 (see FIG. 3). When the operation position is in the specific region G2 (step S103: Y), the process proceeds to step S104. When the operation position is not in the specific region G2 (step S103: N), the process proceeds to step S105. Step S103 corresponds to a control step.

In step S104, the mode setting unit 201 performs a mode switching operation between the drawing mode and the menu setting mode. The process proceeds to step S110. Step S104 corresponds to a mode setting step.

In step S105, the control unit 20 checks whether or not the drawing mode is set by the mode setting unit 201. When the drawing mode is set (step S105:
In Y), a drawing operation corresponding to the operation position is performed (step S106), and the process proceeds to step S110. On the other hand, when the menu setting mode is set (step S105: N), a menu setting operation corresponding to the operation position is performed (step S107), and step S110.
Transition to.

  In step S110, the operation flow ends, and the process returns to the original process.

[Operation when the projector is turned on]
As shown in FIG. 5B, when the projector 1 is in a standby state and the power is turned on by the power key of the input operation means 23 (step S201), the process proceeds to step S202.

In step S202, the control unit 20 turns on the light source 11 by the light source control unit 22, and the process proceeds to step S203.

In step S203, the control unit 20 causes the image projection unit 10 to switch the mode switching screen M.
1 (see FIG. 6) is projected, and the process proceeds to step S204.
Here, FIG. 6 is a diagram showing a mode switching screen M1 projected when the power is turned on.

In step S204, the control means 20 responds to the mode switching screen M1 (see FIG. 6).
Check whether a mode switching operation is detected. Specifically, as shown in FIG. 3, it is checked whether or not the specific area G2 is tapped with the electronic pen 40. When a mode switching operation is detected (step S
204: Y), the mode setting means 201 switches to the menu setting mode (step S
205), the process proceeds to step S210. If no mode switching operation is detected (step S204: N), the process proceeds to step S210. Specifically, the electronic pen 40 is used as shown in FIG.
When the drawing area G1 shown in FIG. 6 is tapped or when a predetermined time has elapsed, it is considered that the mode switching operation has not been detected.

  In step S210, the operation flow ends, and image projection starts.

According to the embodiment described above, the following effects can be obtained.
According to the projector 1 of the present embodiment, either the drawing mode for drawing on the projection surface SC or the menu setting mode for changing the setting items of the projector 1 according to the operation position of the electronic pen 40 as the indicator. Can be switched. Accordingly, it is possible to provide a projector that can perform both the drawing operation and the setting operation of the projector 1 using only the electronic pen 40.

Further, since the setting screen for setting the setting items of the projector 1 is projected, the menu setting operation with the electronic pen 40 can be easily performed.

In addition, since the projection position of the setting screen can be changed by the operation position of the electronic pen 40, the setting screen can be displayed at a position that does not interfere with the drawing screen.

Further, when the projector 1 is turned on, a mode switching screen M1 indicating a switching method to the drawing mode or the menu setting mode is displayed and the user is notified of the switching method, so that the usability is improved.

Moreover, you may change this embodiment as follows.
(Modification 1)
In the above embodiment, the type of setting item set in the menu setting mode may be changed according to the location of the specific area on the projection screen SC.
Here, FIG. 7 is a diagram showing a display screen of the menu setting mode according to the first modification.
As shown in FIG. 7, in the drawing mode, by tapping the specific area G3 on the left side of the projection screen SC with the electronic pen 40, setting items different from the example of FIG. 3 are displayed. That is, since the setting item to be set can be selected depending on the position where the electronic pen 40 is tapped, the setting screen for the target setting item can be displayed with a small number of operations.

(Modification 2)
The projector 1 is not limited to the configuration of the above-described embodiment and modification example.
Other display devices (not shown) may be used. As the display device, for example, a liquid crystal television,
A configuration including a display panel for displaying a display image, such as a plasma display or an organic EL video display device, may be used. In addition, as an indicator that indicates the position on the display panel,
Not only the electronic pen 40 but also a touch panel and a touch pen may be provided.
When an arbitrary position on the touch panel arranged corresponding to the pixel on the display panel surface is designated with the touch pen, the corresponding position in the display image is detected (position detecting means). When the detected position is within a specific area in the display image, the drawing mode or the menu setting mode is switched (mode setting means). As described above, it is possible to provide a display device that can perform both the drawing mode and the menu setting mode only by an operation with a touch panel, a touch pen, or the like.

(Modification 3)
This will be described with reference to FIG.
The display device is not limited to the configurations of the above-described embodiments and modifications, and may be a head-mounted display (not shown). In the head-mounted display, a transmissive half mirror is incorporated in the head-mounted display body instead of the projection surface SC shown in FIG. 4, and the other components shown in FIG. It has substantially the same function. According to the head mounted display according to this modification, the electronic pen 40 included in the visual field direction is imaged, and the position of the electronic pen 40 in the projected image is detected (position detection means). If the detected position is within a specific area in the projected image,
The drawing mode or menu setting mode is switched (mode setting means).
In this way, it is possible to provide a head mounted display that can perform both a drawing operation and a setting operation for the head mounted display using only the electronic pen 40.

In the head mounted display, it is possible to configure a drawing mode in which a comment or a picture is drawn with the electronic pen 40 at a position corresponding to a landscape object that is viewed through the half mirror. While drawing in the drawing mode, the user can switch to the menu setting mode by the mode setting means and change the drawing color of the electronic pen 40, the thickness of the line to be drawn, and the like. Such a feeling of drawing operation is similar to a feeling of using a palette of paintings while looking at the scenery, and it is possible to provide a head-mounted display that is easy to understand for the user and has high usability.

DESCRIPTION OF SYMBOLS 1 ... Projector, 6 ... Image input terminal, 10 ... Image projection means, 11 ... Light source, 12R,
12G, 12B ... Liquid crystal light valve, 13 ... Projection lens, 14 ... Liquid crystal drive means, 16 ... O
SD processing means, 17 ... image signal processing means, 18 ... image signal input means, 20 ... control means, 2
DESCRIPTION OF SYMBOLS 01 ... Mode setting means, 21 ... Memory | storage means, 22 ... Light source control means, 23 ... Input operation means, 2
DESCRIPTION OF SYMBOLS 5 ... Pen operation detection means, 30 ... Power supply terminal, 31 ... Power supply part, 40 ... Electronic pen, 40A ... Housing | casing, 40B ... Pen tip switch, 40C ... Light emission part, G1 ... Drawing area | region, G2, G3 ... Specific area | region,
SC: Projection plane.

Claims (6)

A projector having image projection means for modulating light emitted from a light source according to image information and projecting the light onto a projection surface,
Position detecting means for detecting the position indicated by the indicator in the projected image projected by the image projecting means;
Mode setting means for setting either a drawing mode for drawing in the projected image according to the position or a menu setting mode for setting a plurality of setting items of the projector according to the position;
The mode setting means switches from one mode of the drawing mode or the menu setting mode to the other mode when the position is in a specific area in the projected image. . The projector according to claim 1.
The image projecting means projects a setting screen for setting the setting items in the menu setting mode. The projector according to claim 2,
The projector, wherein the image projection unit changes a projection position of the setting screen in accordance with the position in the specific area. The projector according to any one of claims 1 to 3,
The image projection unit projects a screen for switching to the drawing mode or the menu setting mode when the projector is turned on,
The mode setting means switches from one mode of the drawing mode or the menu setting mode to the other mode when a predetermined switching operation is detected on the switching screen. A method for controlling a projector having image projection means for modulating light emitted from a light source according to image information and projecting the light onto a projection surface,
A position detecting step for detecting a position indicated by the indicator in the projected image projected by the image projecting means;
A mode setting step for setting either a drawing mode for drawing in the projected image according to the position, or a menu setting mode for setting a plurality of setting items of the projector according to the position;
A control step of switching from one mode of the drawing mode or the menu setting mode to the other mode by the mode setting step when the position is in a specific region in the projected image;
A projector control method characterized by comprising: A display device having image display means for displaying an image according to image information,
Position detection means for detecting the position indicated by the indicator in the display image displayed by the image display means;
Mode setting means for setting either a drawing mode for drawing in the display image according to the position, or a menu setting mode for setting a plurality of setting items of the display device according to the position. ,
The mode setting means is configured to switch from one mode of the drawing mode or the menu setting mode to the other mode when the position is in a specific region in the display image. apparatus.

Images