JP2012194424A - Projector and control method for projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to perform intuitively and easily an input operation relating to a trapezoidal distortion correction for a projection image.SOLUTION: In a projector 10 that includes a touch panel 47 having an input area 48 sectioned into a plurality of areas 48A to 48D and is used for projecting a projection image 201 with a vertex-having shape onto a screen SC, at least one of the areas 48A to 48D of the input area 48 of the touch panel 47 are associated with one of the vertices of the projection image 201. When an operation is performed in the input area 48 of the touch panel 47, the vertex of the projection image 201, corresponding to the operated area 48A, is selected as a movement target. The projection image 201 is deformed so that the vertex as the movement target is moved in the direction and by the amount corresponding to the operation of the touch panel 47.

Description

  The present invention relates to a projector and a method for controlling the projector.

  Conventionally, a projector having a function of correcting a trapezoidal distortion that occurs when an image is projected on a screen is known (for example, see Patent Document 1). The projector described in Patent Document 1 includes a touch pad, and can specify a trapezoidal distortion correction amount and correction direction by operating the touch pad. Specifically, when a touch operation is performed with a plurality of fingers on the touch pad, each contact point is assigned to each vertex of the projection image, and when each finger is moved as it is, each vertex of the projection image is corrected to move. .

JP 2010-197843 A

In many cases, in order to correct the projected image on the screen to a desired rectangle by correcting the trapezoidal distortion, it is necessary to repeat the adjustment while viewing the projected image. For this reason, it is desirable that the input operation for correcting the trapezoidal distortion can be easily performed by using a single finger and performing an intuitive operation more easily.
The present invention has been made in view of the above-described circumstances, and an object thereof is to enable an input operation for deforming a projected image to be performed intuitively and easily.

In order to solve the above problems, the present invention provides a projection unit that projects a projected image having a shape on a projection surface, a pointing device having a predetermined input area, and the projection according to an operation of the pointing device. Correcting means for deforming the projected image projected by the means, wherein the pointing device is configured such that the input area is divided into a plurality of areas, and at least one of these areas is one of the projected images. When the operation is performed in the input area of the pointing device, the correction unit selects a vertex of the projection image corresponding to the operated area as a movement target, and the movement target vertex The projected image may be deformed so that the image moves by a direction and an amount corresponding to the operation of the pointing device. The features.
According to the present invention, when an operation is performed in the input area of the pointing device, the vertex of the projection image corresponding to the operated area is selected as the movement target, and the vertex of the movement target is selected according to the operation of the input area. The projected image is deformed so as to move by the determined direction and amount. For this reason, when performing a process of deforming the projection image such as a trapezoidal distortion correction process, an operation for selecting a movement target vertex among the vertices of the projection image, and a movement direction and amount of the selected vertex are designated. The operation can be easily performed with a pointing device, and can be easily performed while viewing a projected image, for example. Thereby, the input operation for deforming the projection image can be performed intuitively and easily.

Further, the present invention is characterized in that, in the projector, the input area of the pointing device is divided into the same number of regions as the vertices of the projection image, and these regions are associated with the vertices of the projection image. To do.
According to the present invention, since the input area is divided into the same number of regions as the vertices of the projection image and each region corresponds to the vertex of the projection image, the correspondence between the input area and the vertex of the projection image is easy to understand. For this reason, a more intuitive and simple input operation can be realized.

Further, in the projector according to the aspect of the invention, the correction unit has a trapezoidal distortion correction function that corrects a trapezoidal distortion of the projection image, and when the trapezoidal distortion correction function is executed, the correction unit performs the keystone distortion according to the operation of the pointing device. The projection image is deformed so that the vertex of the projection image moves.
According to the present invention, an input operation for deforming a projection image by the trapezoidal distortion correction function can be performed more intuitively and easily.

In the projector according to the aspect of the invention, the pointing device may be provided on an upper surface of the projector main body or on the opposite side of the projection surface.
According to the present invention, by providing a pointing device in a place where the projector can easily operate even while the projector is projecting an image on the projection surface, the projected image is deformed by an intuitive and simple operation while viewing the projected image. Input operation can be performed.

In the projector according to the aspect of the invention, the pointing device may be a touch panel that detects a contact operation with a user's finger.
According to the present invention, when a user touches the touch panel with a finger to perform processing for deforming a projected image, an operation for selecting a vertex to be moved, and a moving direction and amount of the selected vertex are designated. Can be easily performed.

In order to solve the above problems, the present invention is a projector control method that includes a pointing device having an input area divided into a plurality of regions, and projects a projected image having a vertex on a projection surface. At least one of the input area areas of the pointing device is associated with one of the vertices of the projection image, and when an operation is performed on the input area of the pointing device, A corresponding vertex of the projection image is selected as a movement target, and the projection image is deformed so that the vertex selected as the movement target moves by a direction and an amount corresponding to an operation of the pointing device.
According to the present invention, when an operation is performed in the input area of the pointing device, the vertex of the projection image corresponding to the operated area is selected as the movement target, and the vertex selected as the movement target is the operation of the input area. The projected image is deformed so as to move by a direction and an amount corresponding to. For this reason, when performing a process of deforming the projection image such as a trapezoidal distortion correction process, an operation for selecting a movement target vertex among the vertices of the projection image, and a movement direction and amount of the selected vertex are designated The operation can be easily performed with a pointing device, and can be easily performed while viewing a projected image, for example. Thereby, the input operation for deforming the projection image can be performed intuitively and easily.

  According to the present invention, when the projection image is deformed, an operation for selecting a vertex to be moved among the vertices of the projection image and an operation for specifying the moving direction and amount of the selected vertex are intuitive. It can be done easily and easily.

1 is an external perspective view of a projector according to an embodiment to which the invention is applied. It is a block diagram which shows the functional structure of a projector. It is explanatory drawing which shows a response | compatibility with the input area of a touch panel, and a projection image, (A) shows the example which projects a rectangular projection image on a screen, (B) shows the example which projects a triangle projection image on a screen. . It is a figure which shows the example which performs keystone correction | amendment by operation of a touchscreen, (A) shows the state of the projection image before correction | amendment, (B) shows the example of operation, (C) is the state of the projection image after correction | amendment. Indicates. It is a flowchart which shows operation | movement of a projector.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of a projector 10 according to the embodiment.
The projector 10 is a display device that has a rectangular box-shaped housing 11 (projector body) in a plan view and projects an image onto a screen SC (FIG. 2) in the state shown in FIG. 1. The projector 10 is fixed to, for example, the floor surface, a pedestal installed on the floor surface, or the ceiling, and the screen SC is, for example, a substantially upright plane.
A projection opening 11 </ b> A is provided on the front surface of the housing 11. A projection lens of a projection optical system 33 (FIG. 2), which will be described later, is exposed from the projection opening 11A, and projection light is projected from the projection opening 11A toward the screen SC. An intake port 11C for taking in cooling air for cooling a light source of an illumination optical system 31 (FIG. 2), which will be described later, is provided on a side surface of the housing 11. The housing 11 is provided with an exhaust port (not shown) for discharging cooling air.

  A lens cover 51 that is manually opened and closed is provided in the projection opening 11A. The lens cover 51 is slidably attached along the front surface of the housing 11, and an operation lever 53 protruding from the upper surface of the housing 11 is attached. By sliding the operation lever 53, the projection opening 11A is closed to protect the lens surface of the projection lens or to block the projection light on the screen SC.

  Further, a recess 11B is formed on the upper surface of the housing 11, and the recess 11B has a focus adjustment lever 55 for manually adjusting the focus of the projection light projected by the projector 10 and a manual zoom adjustment. Zoom adjustment lever 57 is provided. When the focus adjustment lever 55 and the zoom adjustment lever 57 are manually rotated, a lens group of an illumination optical system 31 (FIG. 2) described later moves, and focus adjustment and zoom adjustment of an image formed on the screen SC are performed. Is called.

  On the upper surface of the housing 11, an operation panel 45 and a touch panel 47 are disposed on the side opposite to the projection opening 11A, that is, on the side away from the screen SC (FIG. 2). The operation panel 45 includes various switches, and buttons for instructing power on / off of the projector 10, menu operation, calling up a help menu, etc., an indicator lamp indicating the operating state of the projector 10, and the like are arranged. Has been.

  The touch panel 47 is a pointing device that has a flat input area, and has a function of specifying a contact position by detecting that a person has touched the surface of the input area. Examples of the method for detecting contact include a pressure-sensitive method and a capacitance method. The touch panel 47 of the present embodiment has a rectangular input area mounted at a position close to the back surface on the upper surface of the housing 11. The touch panel 47 is in a position where it can be easily operated from the opposite side of the screen SC, that is, the side where the projection light does not strike, while the projector 10 projects an image on the screen SC. For example, an operation in which the user touches with a finger is performed on the touch panel 47.

FIG. 2 is a block diagram illustrating a functional configuration of the projector 10.
The projector 10 is connected to an external image supply device (not shown) such as a personal computer or various image players via an I / F (interface) unit 101, and an input image input from these image supply devices is displayed on the screen SC. Project to. For example, the I / F unit 101 includes a USB interface, a wired or wireless LAN interface, a VGA terminal to which an analog video signal is input, a DVI (Digital Visual Interface) to which a digital video signal is input, NTSC, PAL, SECAM, and other composites. Provided with an S video terminal to which a video signal is input, an RCA terminal to which a composite video signal is input, a D terminal to which a component video signal is input, an HDMI connector conforming to the HDMI (registered trademark) standard, etc. There may be provided an interface circuit for inputting / outputting signals via the. Examples of the image supply device include a video playback device, a DVD playback device, a television tuner device, a CATV set top box, an image output device such as a video game device, and a personal computer. In the present embodiment, description will be made assuming that digital image data is input from the image supply apparatus to the I / F unit 101. This digital image data includes information related to the image format of the digital image data as well as the image data itself.

The projector 10 is roughly composed of a projection unit 3 (projection means) that forms an optical image, and an image processing system that electrically processes an image signal input to the projection unit 3. The projection unit 3 includes an illumination optical system 31, a liquid crystal panel 32 that is a light modulation device, and a projection optical system 33. The illumination optical system 31 includes a light source including a xenon lamp, an ultra high pressure mercury lamp, an LED (Light Emitting Diode), and the like. The illumination optical system 31 may include a reflector and an auxiliary reflector that guide light emitted from the light source to the liquid crystal panel 32, and a lens group (not shown), a polarizing plate, A light control element or the like that reduces the amount of light emitted from the light source on the path to the liquid crystal panel 32 may be provided. A light source driving unit 117 that drives the light source of the illumination optical system 31 according to the control of the control unit 103 is connected to the illumination optical system 31.
The liquid crystal panel 32 receives a signal from an image processing system, which will be described later, and forms an image on the panel surface. The liquid crystal panel 32 includes three liquid crystal panels corresponding to the three primary colors of RGB in order to perform color projection. Therefore, the light from the illumination optical system 31 is separated into three color lights of RGB, and each color light enters each corresponding liquid crystal panel. The color light modulated by passing through each liquid crystal panel is combined by a combining optical system such as a cross dichroic prism and emitted to the projection optical system 33.

  The projection optical system 33 includes a lens group for projecting incident light modulated by the liquid crystal panel 32 onto the screen SC to form an image. The lens group included in the projection optical system 33 can be moved by operating the zoom adjustment lever 57 described with reference to FIG. 1 to enlarge or reduce the image at a zoom rate desired by the user. Further, the focus adjustment of the image stored on the screen SC is performed by operating the focus adjustment lever 55. The projection optical system 33 includes motors for adjusting a diaphragm and the like for reducing the amount of projection light, and is connected to a projection optical system drive unit 121 that drives the motor and the like according to the control of the control unit 103.

  The image processing system is configured around a control unit 103 that controls the entire projector 10 in an integrated manner, a storage unit 105 that stores data processed by the control unit 103 and a control program 105A executed by the control unit 103, and a remote control light receiving unit. 41, an input processing unit 123 that detects an operation via the operation panel 45 and the touch panel 47, a display control unit 107 that processes input image data, and the liquid crystal panel 32 based on an image signal output from the display control unit 107. A light modulator driving unit 119 that performs drawing.

  The control unit 103 controls each unit of the projector 10 by reading and executing the control program stored in the storage unit 105. The control unit 103 detects the content of the operation performed by the user based on the operation information input from the input processing unit 123, and in response to this operation, the display control unit 107, the light modulation device driving unit 119, the projection optical system. The drive unit 121 and the light source drive unit 117 are controlled to project an image on the screen SC.

Under the control of the control unit 103, the projector 10 appropriately turns on or blinks the indicator lamp of the operation panel 45 according to the operation state or setting state of the projector 10, and detects the operation of the buttons on the operation panel 45 to obtain operation information. An input processing unit 123 that outputs to the control unit 103 is provided.
The input processing unit 123 is connected to a remote control light receiving unit 41 that receives an infrared signal transmitted from a remote control (not shown) used by the user. The remote control light receiving unit 41 decodes an infrared signal received from the remote control and outputs the decoded infrared signal to the input processing unit 123. The input processing unit 123 generates operation information indicating the operation content by the remote control and outputs the operation information to the control unit 103.
Further, the input processing unit 123 detects the presence / absence of contact with the touch panel 47 at a predetermined cycle. When the input processing unit 123 detects contact with the touch panel 47, the input processing unit 123 specifies the touched position (operation position) and sets the operation position. The operation information shown is output to the control unit 103. Here, the input processing unit 123 outputs the coordinates of the operation position to the control unit 103 based on a coordinate system that is virtually provided in the input area of the touch panel 47 in advance.

The I / F unit 101 is connected to the above-described external image supply device (not shown).
The display control unit 107 generates a display signal based on an input image signal input from the image supply device via the I / F unit 101 under the control of the control unit 103, and outputs the display signal to the light modulation device driving unit 119.
The display control unit 107 acquires the image data input from the I / F unit 101, determines whether the image size or resolution, whether the image is a still image or a moving image, and, in the case of a moving image, image data such as a frame rate. Determine the attribute. Then, the display control unit 107 expands the input image in the frame memory 115 for each frame, and performs resolution conversion processing when the resolution of the input image data is different from the display resolution of the liquid crystal panel 32, and performs a remote control (not shown) or When zooming is instructed by operating the operation panel 45, enlargement / reduction processing is performed, and a display frame after processing is drawn in the frame memory 115. Thereafter, the display control unit 107 outputs an image for each frame developed in the frame memory 115 to the light modulation device driving unit 119 as a display signal.

The control unit 103 implements the functions of the input detection unit 141, the input region determination unit 142, the operation amount detection unit 143, and the correction control unit 144 by executing the control program 105A stored in the storage unit 105.
The input detection unit 141 detects an operation of the touch panel 47 based on the operation information input from the input processing unit 123, and starts a process (FIG. 5) corresponding to the operation of the touch panel 47. The input area determination unit 142 determines which area of the input area of the touch panel 47 the operation position belongs to based on the coordinates of the operation position indicated by the operation information input from the input processing unit 123.

3A and 3B are explanatory diagrams showing the correspondence between the input area of the touch panel 47 and the projection image. FIG. 3A shows an example in which a rectangular projection image 201 is projected on the screen SC, and FIG. 3B shows a triangle shape on the screen SC. The example which projects the projection image 211 is shown.
As shown in FIGS. 3A and 3B, the input area 48 of the touch panel 47 is divided (segmented) into a plurality of regions in accordance with the shape of the image projected by the projector 10 on the screen SC. In the example of FIG. 3A, the projected image 201 displayed on the screen SC is a rectangle, and the input area 48 is divided into four regions 48A, 48B, 48C, and 48D. The projected image 201 has a rectangular outer shape, but the content of the image displayed in the rectangular frame is not limited, and may be a still image or a moving image. Each region virtually divides the input area 48, and the input area 48 does not need to be physically divided. In the example of FIG. 3B, the projected image 211 on the screen SC is a triangle, and the input area 48 is divided into three regions 48P, 48Q, and 48R.
That is, the input area 48 of the touch panel 47 is divided into the same number of regions as the number of vertices of the projection image projected by the projector 10, and each region of the input area 48 is associated with each vertex of the projection image. In addition, the position of each area in the input area 48 and the position of each vertex corresponding to each area in the projection image correspond to each other. For example, the region 48A located at the upper left of the input area 48 corresponds to the vertex A located at the upper left on the screen SC. For this reason, the correspondence between the touch panel 47 and the projected image can be intuitively understood.

In the example of FIG. 3A, the four areas 48A, 48B, 48C, and 48D of the input area 48 correspond to the vertices A, B, C, and D of the projection image 201, respectively. In the example of FIG. 3B, the three areas 48P, 48Q, and 48R of the input area 48 correspond to the vertices P, Q, and R of the projection image 211, respectively. As will be described later, an operation in each area of the input area 48 moves the corresponding vertex and performs keystone correction (trapezoidal distortion correction).
The input area determination unit 142 divides the input area of the touch panel 47 into a plurality of areas so as to have the same number as the shape (number of vertices) of the projected image drawn on the liquid crystal panel 32 by the processing of the display control unit 107. Specifically, a plurality of areas are set in the input area, a range of coordinates belonging to each area is determined based on a virtual coordinate system of the input area, and stored in the storage unit 105. When the input area determination unit 142 acquires the coordinates of the operation position in the input area, the input area determination unit 142 determines to which area the acquired coordinates belong.

  The operation amount detection unit 143 illustrated in FIG. 2 performs processing for obtaining the operation amount and operation direction of the operation on the touch panel 47 based on the operation information input from the input processing unit 123. As described above, the input processing unit 123 detects contact with the touch panel 47 at a predetermined cycle, and outputs operation information indicating the presence / absence of the contact and the contact position at the predetermined cycle. The operation amount detection unit 143 performs statistical processing on the operation information indicating the detection result of a predetermined cycle, and when the continuous operation is performed, the continuous operation is regarded as a single operation, and the operation amount and the operation Find the direction. For example, when the process of moving the touch panel 47 while keeping the finger in contact is performed, the input processing unit 123 detects the contact at a predetermined cycle and outputs the coordinates of the contact position detected at that time. Based on the operation information continuously input from the input processing unit 123, the input area determination unit 142 generates data indicating the locus of movement of the operation position, and based on this data, the direction of the operation for moving the finger , Speed, and operation amount from the start to the end of the operation

Here, the operation on the touch panel 47 is used for keystone correction of a projected image projected on the screen SC.
4A and 4B are diagrams illustrating an example in which keystone correction is performed by operating the touch panel. FIG. 4A illustrates a state of a projected image before correction, FIG. 4B illustrates an operation example, and FIG. The state of a projection image is shown.
The projected image 201 formed on the screen SC is distorted (so-called trapezoidal distortion) due to the positional relationship between the projector 10 and the screen SC. In the example of FIG. 4A, a rectangular image drawn on the liquid crystal panel 32 of the projector 10 is a rectangular projection image 201 extending to the upper left on the screen SC.
The projector 10 can execute keystone correction that corrects an image having an original shape on the screen SC by deforming the image drawn on the liquid crystal panel 32. Specifically, the projected image 201 in FIG. 4A is deformed so that a rectangular image extends in the upper left direction, and the vertex A is moved to the upper left from the original position. The original position refers to a position when the image formed on the screen SC has the same shape as the image input to the projector 10 via the I / F unit 101. For example, when the projector 10 is installed at a position facing the screen SC and the traveling direction of the projection light projected by the projector 10 is perpendicular to the screen SC in both the vertical and horizontal directions, there is no distortion. The original image is formed on the screen SC.

Here, when a drag operation in the lower right direction is executed on the touch panel 47 in the region 48A corresponding to the vertex A as shown by the arrow in the figure, the image on the liquid crystal panel 32 is shown in FIG. Deformed as shown.
First, when a touch operation on the area 48A of the input area 48 is detected, the control unit 103 selects the vertex A corresponding to the area 48A as the vertex to be moved.
Subsequently, as shown in FIG. 4B, the image is deformed so that the vertex A of the projection image 201 moves in the operation direction indicated by the arrow in FIG. 4B by an amount corresponding to the operation amount. Is done. When the image drawn on the liquid crystal panel 32 is deformed in this way, the vertex A of the projection image 201 formed on the screen SC also moves to the original position A ′. As a result, the image on the screen SC becomes the original rectangular projection image 201.
In the example of FIG. 4B, since the first operation on the touch panel 47 is performed in the region 48A, the vertex A is selected as the vertex to be moved, and the vertices B, C, and D of the projection image 201 do not move. .

As described above, in the keystone correction function of the projector 10, when an operation is first performed on the touch panel 47, a region where this operation is performed is specified, and a corresponding vertex in the projection image is selected as a vertex to be moved. . In this state, even if an operation is performed on a region other than the region operated first, the image is deformed so that the selected vertex is moved once. For example, when the area 48A is operated and the vertex A is selected as a movement target, the vertex A is moved even if the next operation on the touch panel 47 is an operation extending to the areas 48B, 48C, and 48D. For this reason, after the area to be moved is selected, the moving direction and moving amount of the vertex can be input using the entire input area 48, and the operability is high.
Further, as illustrated in FIG. 4B, when the first operation is not a simple contact operation but a drag operation in which the finger is moved while being in contact with the input area 48, the vertex selected in the first operation The image can be deformed so as to move according to the operation direction and the operation amount of the first operation. In this case, a vertex to be moved can be specified by one operation, and a moving direction and a moving amount can be input.

As illustrated in FIG. 4C, the correction control unit 144 (correction unit) in FIG. 2 selects a vertex corresponding to the area determined by the input area determination unit 142 as a vertex to be moved. Then, the correction control unit 144 performs a process of deforming the image so as to move the vertex to be moved by an amount corresponding to the operation direction and the operation amount obtained by the operation amount detection unit 143. Specifically, a parameter for deforming the image is generated, the display control unit 107 is controlled according to the parameter, the image is deformed, and the display signal of the deformed image is output to the light modulator driving unit 119.
Thereby, the projection image on the screen SC can be deformed by an operation on the touch panel 47, and the trapezoidal distortion can be corrected.

FIG. 5 is a flowchart showing the operation of the projector 10.
When the projector 10 starts projecting an image on the screen SC (step S11) and the start of keystone correction is instructed by an operation of a remote controller (not shown) or the operation panel 45 (step S12), the control unit 103 touches the touch panel. It waits until 47 is operated (step S13).
When the touch panel 47 is operated and operation information is input from the input processing unit 123 to the control unit 103, the control unit 103 detects an operation by the function of the input detection unit 141 (step S13; Yes). The control unit 103 determines an area corresponding to the operation position of the touch panel 47 by the function of the input area determination unit 142 (step S14). The control unit 103 sets the vertex corresponding to the region operated in the outer shape of the image being projected as the vertex to be moved by the function of the correction control unit 144 (step S15).

  If the operation on the touch panel 47 detected in step S13 is not a drag operation, the control unit 103 waits for the drag operation (step S16; No). When the drag operation to the touch panel 47 is performed (step S <b> 16; Yes), or when the first operation to the touch panel 47 is the drag operation, the control unit 103 performs dragging by the function of the operation amount detection unit 143. The direction and amount of operation are detected (step S17).

Next, the control unit 103 generates a parameter for deforming the image so that the vertex of the movement target moves according to the operation direction and the operation amount detected by the operation amount detection unit 143 by the function of the correction control unit 144. The display control unit 107 is controlled according to the parameters to deform the image (step S18). Thereby, the corrected image is projected on the screen SC.
Thereafter, when an instruction to complete keystone correction is input by operating the remote controller (not shown) or the operation panel 45 (step S19; Yes), the control unit 103 ends this processing and returns to a normal projection operation. Return. Further, until the operation for ending the keystone correction is performed (step S19; No), the control unit 103 returns to step S13 and accepts the operation of the touch panel 47.

  As described above, according to the projector 10 according to the embodiment to which the present invention is applied, the projection unit 3 that projects the projection image having the apex on the screen SC, and the touch panel 47 having the predetermined input area 48. The control unit 103 has a function of deforming the projection image projected by the projection unit 3 according to the operation of the touch panel 47 by the correction control unit 144, and the input area 48 of the touch panel 47 includes a plurality of areas 48A to 48A. 48D, at least one of these areas 48A to 48D is associated with one of the vertices of the projected image, and the correction control unit 144 operates when the operation is performed in the input area 48 of the touch panel 47. The vertex of the projection image corresponding to the selected area is selected as the movement target, and the vertex of the movement target is the operation of the touch panel 47. Deforming the projected image to move only in the direction and amount corresponding. Thereby, when transforming the projection image by the trapezoidal distortion correction process, an operation for selecting a vertex to be moved among a plurality of vertices of the projection image, and an operation for specifying the moving direction and amount of the selected vertex Can be easily performed with the touch panel 47, and can be easily performed with one finger while viewing the projected image, for example. Thereby, the input operation for deforming the projection image can be performed intuitively and easily.

The input area 48 of the touch panel 47 is divided into the same number of areas 48A to 48D as the vertices of the projection image, and these areas 48A to 48D are associated with the vertices of the projection image. And the correspondence between the projected image and the apex of the projected image are easy to understand. For this reason, a more intuitive and simple input operation can be realized.
In addition, an input operation for deforming a projection image by the trapezoidal distortion correction function can be performed more intuitively and easily by the touch panel 47.
Further, by providing the touch panel 47 at a place where the projector 10 is easy to operate even while the image is being projected on the screen SC, an input for deforming the projected image by an intuitive and simple operation while viewing the projected image. The operation can be performed. Here, the touch panel 47 is not limited to the upper surface of the main body 11 of the projector 10, but may be provided on the opposite side surface of the screen SC, that is, the opposite surface of the projection opening 11A.
In addition, by providing a touch panel 47 that detects a touch operation with a user's finger as a pointing device, an operation for selecting a vertex to be moved when performing a process of deforming a projected image with the user's finger; The operation of designating the moving direction and moving amount of the selected vertex can be easily performed.

  In addition, embodiment mentioned above does not limit this invention, It is also possible to apply this invention as an aspect different from the said embodiment. For example, in the above-described embodiment, the case where a rectangular projection image or a triangular projection image is projected onto the screen SC has been described. However, the present invention is not limited to this, and a polygonal projection image with more vertices is used. The present invention can be applied to the case of projecting, and can be applied to the case of projecting a projected image having a vertex even when the outer shape (frame) of the projected image is not configured by a straight line. In the above embodiment, the example in which the input area 48 is divided into the same number of regions as the vertices of the projected image on the screen SC has been described. However, the present invention is not limited to this, and the input area 48 is divided. It suffices that at least one of the regions is associated with the vertex of the projection image. For this reason, for example, it may be divided into more areas than the vertices of the projected image, or the area of the input area 48 may be smaller than the vertices of the projected image.

Moreover, in the said embodiment, the structure using the three transmissive | pervious or reflective liquid crystal panels 32 corresponding to each color of RGB as an example as a modulation | alteration means which modulates the light which the light source emitted in the projection part 3 is mentioned as an example. As described above, the present invention is not limited to this. For example, a system using a single liquid crystal panel and a color wheel, a system using three digital mirror devices (DMD), and a single digital mirror You may comprise by the system etc. which combined the device and the color wheel. Here, when only one liquid crystal panel or DMD is used as the modulation means, a member corresponding to a synthetic optical system such as a cross dichroic prism is unnecessary. In addition to the liquid crystal panel and the DMD, any configuration that can modulate the light emitted from the light source can be used without any problem.
In the above-described embodiment, the configuration in which focus adjustment and zoom adjustment are manually performed by operating the focus adjustment lever 55 and the zoom adjustment lever 57 has been described as an example. However, the present invention is not limited to this. .
Furthermore, in the above-described embodiment, the configuration in which the touch panel 47 is provided on the upper surface of the housing 11 as an example of the pointing device has been described as an example. However, a pen tablet or a digitizer can be used as the pointing device, An arranged touch panel may be used. In addition, the specific configuration is arbitrary as long as the pointing device defines an input area. Further, the installation position, size, and shape of the touch panel 47 are also arbitrary. For example, the touch panel 47 may be provided in an input device externally connected to the projector 10 or an infrared signal is transmitted to the remote control light receiving unit 41. A touch panel 47 may be provided on a remote controller (not shown).

Further, the control program 105A stored in the storage unit 105 in the above-described embodiment may be downloaded from the other device connected to the projector 10 via the communication network and executed, or may be stored in a portable recording medium. The control program 105A may be recorded, and the above programs may be read from the recording medium and executed.
Furthermore, each functional unit of the projector 10 illustrated in FIG. 2 indicates a functional configuration, and a specific mounting form is not particularly limited. That is, it is not always necessary to mount hardware corresponding to each function unit individually, and it is of course possible to adopt a configuration in which the functions of a plurality of function units are realized by one processor executing a program. In addition, in the above embodiment, a part of the function realized by software may be realized by hardware, or a part of the function realized by hardware may be realized by software. In addition, the specific detailed configuration of the projector 10 can be arbitrarily changed without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 3 ... Projection part (projection means), 10 ... Projector, 11 ... Housing | casing (projector main body), 32 ... Liquid crystal panel, 47 ... Touch panel (pointing device), 48 ... Input area, 48A, 48B, 48C, 48D ... area | region, 48P, 48Q, 48R ... area, 101 ... I / F unit, 103 ... control unit, 105 ... storage unit, 105A ... control program, 107 ... display control unit, 115 ... frame memory, 123 ... input processing unit, 141 ... input Detection unit, 142 ... input region determination unit, 143 ... operation amount detection unit, 144 ... correction control unit (correction means), 201, 211 ... projection image, A, B, C, D, P, Q, R ... vertex, SC: Screen (projection surface).

Claims (6)

Projection means for projecting a projection image having a vertex on the projection surface;
A pointing device having a predetermined input area;
A correction unit that deforms the projection image projected by the projection unit in response to an operation of the pointing device;
In the pointing device, the input area is divided into a plurality of regions, and at least one of these regions is associated with any vertex of the projection image,
When the operation is performed in the input area of the pointing device, the correction unit selects a vertex of the projection image corresponding to the operated area as a movement target, and the movement target vertex is an operation of the pointing device. Deforming the projected image so as to move in a direction and amount according to
Projector.   The projector according to claim 1, wherein the input area of the pointing device is divided into the same number of areas as the vertices of the projection image, and each of the areas is associated with each vertex of the projection image.   The correction means has a trapezoidal distortion correction function for correcting the trapezoidal distortion of the projection image, and when executing the trapezoidal distortion correction function, the vertex of the projection image is moved according to the operation of the pointing device. The projector according to claim 1, wherein the projection image is deformed.   The projector according to claim 1, wherein the pointing device is provided on an upper surface of the projector main body or on the opposite side of the projection surface.   The projector according to claim 1, wherein the pointing device is a touch panel that detects a contact operation with a user's finger. A control method for a projector comprising a pointing device having an input area divided into a plurality of regions, and projecting a projected image having a vertex on a projection surface,
At least one area of the input area of the pointing device is associated with any vertex of the projection image,
When an operation is performed in the input area of the pointing device, a vertex of the projection image corresponding to the operated area is selected as a movement target,
Deforming the projection image so that a vertex selected as a movement target moves by a direction and an amount corresponding to an operation of the pointing device;
A projector control method characterized by the above.

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