JP2013110613A - Image projection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image projection apparatus whose operability in the case where it is installed while making rotation by 90 degrees is improved.SOLUTION: An image projection apparatus, which is capable of projecting an image in both of a first installation state and a second installation state where rotation from the first installation state by around 90 degrees is made, includes: a projection optical system that projects the image onto a target projection surface; image change means for changing a shape or a position of the image in accordance with a first set value in a first direction of the image and a second set value in a second direction vertical to the first direction; and input means for inputting a first input value corresponding to the first set value and a second input value corresponding to the second set value, wherein in the first installation state, the first set value is generated based on the first input value and the second set value is generated based on the second input value, whereas in the second installation state, the second set value is generated based on the first input value and the first set value is generated based on the second input value.

Description

  The present invention relates to an image projection apparatus. The image projection apparatus of the present invention can be applied to, for example, an image projection apparatus such as a liquid crystal projector apparatus or a DLP (Digital Light Processing) projector apparatus.

  When an image from a computer is displayed by an image projection apparatus, the image projection apparatus is normally set in FIG. 4 (a) to display a landscape image, but the image output by the computer is rotated to the right, and the image projection apparatus is displayed in FIG. 4 (b). It is also possible to display a portrait image by setting it to rotate left.

  When the image projection device is rotated and installed as described above, when viewed from the user, the image output from the computer is displayed correctly in the vertical and horizontal directions, but the image projection device menu is displayed on-screen. The menu will be displayed in a rotated state. For example, Patent Document 1 holds a means for determining the installation state of the image projection apparatus, an on-screen image for a normal installation state, and an on-screen for a rotational installation state. Technology is disclosed. By doing so, not only the menu is easy to read, but also the change direction of the selected item coincides with the operation direction of the remote controller, and convenience is improved.

JP 2005-148595 A

  However, in the prior art disclosed in the above-mentioned patent document, the selection operation of the menu item is not different depending on the installation state between the normal installation and the rotational installation, but for example, when correcting the trapezoidal distortion in the vertical direction, Had to be operated in consideration of the installation state, and the operability was bad.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image projection apparatus that can be installed by rotating 90 degrees with respect to a normal installation state, and has improved operability when installed by rotating 90 degrees. .

In order to achieve the above object, an image projection apparatus of the present invention includes:
A projection optical system for projecting an image onto a projection surface;
Image changing means for changing the shape or position of the image according to a first set value in the first direction of the image and a second set value in a second direction perpendicular to the first direction;
Input means for inputting a first input value corresponding to the first set value and a second input value corresponding to the second set value;
An image projection apparatus capable of projecting the image in both a first installation state and a second installation state rotated approximately 90 degrees from the first installation state,
In the first installation state, the first setting value is generated based on the first input value, and the second setting value is generated based on the second input value,
In the second installation state, the second set value is generated based on the first input value, and the first set value is generated based on the second input value.

  According to the present invention, it is possible to provide an image projection apparatus that can be installed by rotating 90 degrees with respect to a normal installation state, and that has improved operability when installed by rotating 90 degrees.

1 is a block diagram of an image projection apparatus according to Embodiment 1. FIG. 6 is a block diagram of an image projection apparatus according to Embodiment 2. FIG. FIG. 9 is a block diagram of an image projection apparatus according to a third embodiment. It is the figure which showed the installation method of an image projector.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the image projection apparatus in each embodiment is limited to only two installation states of (a) regular installation and (b) left rotation installation in FIG.

[Example 1]
FIG. 1 is a block diagram of the image projection apparatus according to the first embodiment. The image projection apparatus includes an input video processing unit (not shown), an installation state control unit 1, an OSD processing unit 10, a keystone adjustment value input unit 20, a keystone correction unit 30, and a display unit 2. OSD is an abbreviation for on-screen display.

  The input video processing unit converts the video signal input to the image projection device into a video format inside the image projection device.

  The installation state control unit 1 includes a memory that holds the installation state of the normal installation or the left rotation installation, and a change unit that changes the installation state. Whenever the installation state is changed by the change unit, the OSD process is performed. The operations of the unit 10 and the keystone correction unit 30 are switched. As the changing means, there are automatic discrimination by sensors such as an acceleration sensor, manual input from the user by an OSD menu, and the like.

  The OSD processing unit 10 performs OSD video superimposition processing such as a menu on the video signal output from the input video processing unit, and includes an OSD memory unit 11, a rotation processing unit 12, a rotation selection SW 13, and an OSD superimposition unit 14. The OSD memory unit 11 holds a menu image that displays keystone adjustment values. The rotation processing unit 12 rotates the menu image input from the OSD memory unit 11 90 degrees to the right and outputs the menu image. The rotation selection SW 13 is controlled by the installation state control unit 1. When the installation state is normal installation, the menu image of the OSD memory unit 11 is left as it is, and when the installation state is left rotation installation, the rotation processing unit 12 rotates the menu. The image is output to the OSD superimposing unit 14. The OSD superimposing unit 14 outputs a composite image obtained by superimposing the menu image input from the rotation selection SW 13 on the video input from the input video processing unit.

  The keystone adjustment value input unit 20 has a role of inputting adjustment values for correcting horizontal and vertical trapezoidal distortion caused by the positional relationship between the image projection apparatus and the projection surface, and as shown by a dotted line, the vertical adjustment value An input unit 21 and a horizontal adjustment value input unit 22 are provided. The vertical adjustment value input unit 21 stores a memory for storing a vertical keystone adjustment value for adjusting the trapezoidal distortion correction amount in the vertical direction, a display button for displaying the adjustment value, and an upper side on the projection surface relative to the lower side. It consists of an increase button that shortens and a decrease button that lengthens. The vertical keystone adjustment value indicates that the center value is 0 and the upper and lower sides are equal. If it is a positive number, the upper side is shorter. If it is a negative number, the lower side is shorter. And

  The horizontal adjustment value input unit 22 stores a horizontal keystone adjustment value for adjusting the horizontal keystone distortion correction amount, a display button for displaying the adjustment value, and a right side on the projection surface relative to the left side. It consists of an increase button that shortens and a decrease button that lengthens. The horizontal keystone adjustment value indicates that the center value is 0 and the left and right sides are equal. If it is a positive number, the right side is short. If it is a negative number, the left side is short. And When the horizontal or vertical display button is pressed, the adjustment value is notified to the OSD processing unit 10, and a menu for displaying the keystone adjustment value is displayed. In this state, when the increase or decrease button is further pressed, the memory for storing the adjustment value is updated, and the updated adjustment value is notified to the OSD processing unit 10 and the keystone correction unit 30, and the displayed menu and The keystone correction amount is changed.

  The keystone correction unit 30 corrects vertical distortion and horizontal distortion of the projected image by image processing, and as indicated by a dotted line, the negative sign inversion unit 31, vertical selection SW32, horizontal selection SW33, and keystone correction processing unit 34. , A vertical set value generator 35 and a horizontal set value generator 36. The negative sign inversion unit 31 inverts the negative sign of the output from the horizontal adjustment value input unit 22 and reverses the relatively short side. The vertical selection SW 32 is controlled by the installation state control unit 1. When the installation state is positive installation, the vertical keystone adjustment value input from the vertical adjustment value input unit 21 is used. When the installation state is left rotation installation, a negative sign is used. The horizontal keystone adjustment value input from the inverting unit 31 is output. The horizontal selection SW 33 is controlled by the installation state control unit 1, and when the installation state is normal installation, the horizontal keystone adjustment value input from the horizontal adjustment value input unit 22 is used. When the installation state is left rotation installation, vertical adjustment is performed. The vertical keystone adjustment value input from the value input unit 21 is output.

  The keystone correction processing unit 34 has a vertical setting value and a horizontal setting value defined in the direction in the normal installation, and the horizontal and vertical directions generated by the positional relationship between the image projection apparatus and the projection surface according to the setting values. Image processing is performed to cancel the trapezoidal distortion. The vertical setting value generation unit 35 generates and sets a value to be set to the vertical setting value of the keystone correction processing unit 34 according to the vertical or horizontal keystone adjustment value input from the vertical selection SW 32. The horizontal set value generation unit 36 generates and sets a value to be set to the horizontal set value of the keystone correction processing unit 34 according to the vertical or horizontal keystone adjustment value input from the horizontal selection SW 33.

  Conventionally, when an operation for shortening the upper side by keystone correction is performed when left-turned, the upper side of the image projection apparatus is the left side as viewed from the user, and thus the left side is shortened. Similarly, if you try to shorten the left side, the lower side will be shortened, if you try to shorten the lower side, the right side will be shortened, and if you try to shorten the right side, the top side will be shortened, resulting in poor operability. was there. On the other hand, in the present embodiment, when installed counterclockwise, since the up / down / left / right direction is converted into the user viewpoint by the negative sign reversing unit 31, the vertical selection SW 32, and the horizontal selection SW 33, the user can display the projected image with good operability. Distortion can be corrected.

  The display unit 2 converts the video signal input from the keystone correction processing unit 34 into an optical video. The image projection device further includes a projection unit (not shown) that projects the optical image converted by the display unit 2 onto a screen.

  As described above, according to the present embodiment, the vertical keystone adjustment and the horizontal keystone adjustment can be performed in the same manner as in the normal installation even when the left rotation is installed, and the user corrects the distortion of the projected image with good operability. can do. Further, in the present embodiment, for simplification of description, the left rotation installation is limited. However, the right rotation installation is also applied by replacing the negative sign inversion unit 31 between the vertical adjustment value input unit 21 and the horizontal selection SW 33. Is possible.

  In the present embodiment, the horizontal and vertical keystone correction values are displayed in the menu, but the OSD processing unit 10 may not be included because it is not always necessary.

[Example 2]
FIG. 2 is a block diagram of the image projection apparatus according to the second embodiment. The image projection apparatus includes an input video processing unit (not shown), an installation state control unit 1, an OSD processing unit 40, a display unit 2, a lens shift adjustment value input unit 50, and a lens shift unit 60.

  The input video processing unit converts the video signal input to the image projection apparatus into a video format inside the image projection apparatus.

  The installation state control unit 1 includes a memory that holds the installation state of the normal installation or the left rotation installation, and a change unit that changes the installation state. Whenever the installation state is changed by the change unit, the OSD process is performed. The operation of the unit 40 and the lens shift unit 60 is switched. As the changing means, there are automatic discrimination by sensors such as an acceleration sensor, manual input from the user by an OSD menu, and the like.

  The OSD processing unit 40 superimposes an OSD video such as a menu on the video signal output from the input video processing unit, and includes an OSD memory unit 41, a rotation processing unit 42, a rotation selection SW 43, and an OSD superimposing unit 44. The OSD memory unit 41 holds a menu image for displaying a lens shift adjustment value. The rotation processing unit 42 rotates the menu image input from the OSD memory unit 41 by 90 degrees to the right and outputs the menu image. The rotation selection SW 43 is controlled by the installation state control unit 1. When the installation state is normal installation, the menu image of the OSD memory unit 41 is left as it is, and when the installation state is left rotation installation, the rotation processing unit 42 rotates the menu. The image is output to the OSD superimposing unit 44. The OSD superimposing unit 44 outputs a composite image obtained by superimposing the menu image input from the rotation selection SW 43 on the video input from the input video processing unit. The display unit 2 converts the video signal input from the OSD superimposing unit 44 into an optical video.

  The lens shift adjustment value input unit 50 has a role of inputting an adjustment value of a lens shift amount that optically translates the projection surface, and as indicated by a dotted line, a vertical adjustment value input unit 51 and a horizontal adjustment value input unit 52. Have The vertical adjustment value input unit 51 stores a memory for storing a vertical lens shift adjustment value for adjusting a lens shift amount in the vertical direction, a display button for displaying the adjustment value, an increase button for shifting the projection surface upward, It consists of a decrease button that shifts down. The vertical lens shift adjustment value indicates that 0 is the center value, and if it is a positive number, it is higher than the center value, if it is a negative number, it is lower than the center value.

  The horizontal adjustment value input unit 52 stores a memory for storing a horizontal lens shift adjustment value for adjusting a lens shift amount in the horizontal direction, a display button for displaying the adjustment value, an increase button for shifting the projection plane to the right, It consists of a decrease button that shifts to the left. The horizontal lens shift adjustment value indicates that 0 is the center value, and if it is a positive number, it is to the right of the center value. If it is a negative number, it is to the left of the center value. When the horizontal or vertical display button is pressed, the adjustment value is notified to the OSD processing unit 40, and a menu for displaying the lens shift adjustment value is displayed. In this state, when the up / down / left / right shift buttons are pressed, the memory for storing the adjustment value is updated, and the updated adjustment value is notified to the OSD processing unit 40 and the lens shift unit 60, and the displayed menu and The lens shift amount is changed.

  The lens shift unit 60 performs a process for optically translating the projection surface in the vertical direction or the horizontal direction, and as indicated by a dotted line, the negative sign inversion unit 61, the vertical selection SW 62, the horizontal selection SW 63, and the vertical lens shift. Part 64 and horizontal lens shift part 65. The negative sign inversion unit 61 inverts the negative sign of the output from the horizontal adjustment value input unit 52, and the left and right directions are reversed. The vertical selection SW 62 is controlled by the installation state control unit 1. When the installation state is positive installation, the vertical lens shift adjustment value input from the vertical adjustment value input unit 51 is used. When the installation state is left rotation installation, a negative sign is used. The horizontal lens shift adjustment value input from the inverting unit 61 is output. The horizontal selection SW 63 is controlled by the installation state control unit 1, and when the installation state is normal installation, the horizontal lens shift adjustment value input from the horizontal adjustment value input unit 52 is used. When the installation state is left rotation installation, vertical adjustment is performed. The vertical lens shift adjustment value input from the value input unit 51 is output. The vertical lens shift unit 64 optically translates the projection surface in the vertical direction in the normal installation according to the adjustment amount input from the vertical selection SW 62. The horizontal lens shift unit 65 optically translates the projection surface in the horizontal direction in the case of normal installation according to the adjustment amount input from the horizontal selection SW 63. The image projection apparatus further includes a projection unit (not shown) that projects an optical image output from the horizontal lens shift unit 65 onto a screen.

  Conventionally, when an operation to shift upward by lens shift is performed when the camera is installed counterclockwise, the image projection apparatus is shifted to the left because it is left when viewed from the user. Similarly, if you try to shift to the left, down, if you try to shift down, to the right, if you try to shift to the right, it shifts up and the operability is poor, so there is a demand to improve that. was there. On the other hand, in the present embodiment, when the counterclockwise rotation is set, the user can change the lens shift amount with good operability because the negative / inverting unit 61, the vertical selection SW 62, and the horizontal selection SW 63 convert the vertical and horizontal directions into the user viewpoint. Can be adjusted.

  As described above, according to the present embodiment, the vertical lens shift adjustment and the horizontal lens shift adjustment can be performed in the same manner as when the camera is installed in the left direction, and the user can shift the projection image with good operability. Can do. Further, in the present embodiment, for simplification of description, the left rotation installation is limited. However, the right rotation installation is also applied by replacing the negative sign inversion unit 61 between the vertical adjustment value input unit 51 and the horizontal selection SW 63. Is possible.

  In this embodiment, the horizontal and vertical lens shift adjustment values are displayed on the menu, but the OSD processing unit 40 may not be included because it is not always necessary.

[Example 3]
FIG. 3 is a block diagram of the image projection apparatus according to the third embodiment. The image projection apparatus includes an input video processing unit (not shown), an installation state control unit 1, an OSD processing unit 70, a display unit 2, a menu display position adjustment value input unit 80, and a menu display position setting unit 90.

  The input video processing unit converts the video signal input to the image projection apparatus into a video format inside the image projection apparatus.

  The installation state control unit 1 includes a memory that holds the installation state of the normal installation or the left rotation installation, and a change unit that changes the installation state. Whenever the installation state is changed by the change unit, the OSD process is performed. The operation of the unit 70 is switched. As the changing means, there are automatic discrimination by sensors such as an acceleration sensor, manual input from the user by an OSD menu, and the like.

  The OSD processing unit 70 performs OSD video superimposition processing such as a menu on the video signal output from the input video processing unit, and includes an OSD memory unit 71, a rotation processing unit 72, a rotation selection SW 73, and an OSD superimposition unit 74. The OSD memory unit 71 holds a menu image that displays options for switching the operation of the image projection apparatus. Among them, a menu image that displays the menu display position adjustment value is also included. The rotation processing unit 72 rotates the menu image input from the OSD memory unit 71 by 90 degrees to the right and outputs the menu image. The rotation selection SW 73 is controlled by the installation state control unit 1. When the installation state is normal installation, the menu image of the OSD memory unit 71 is left as it is. When the installation state is left rotation installation, the rotation processing unit 72 rotates the menu. The image is output to the OSD superimposing unit 74. The OSD superimposing unit 74 outputs a video obtained by superimposing the menu image input from the rotation selection SW 73 on the position specified by the vertical position setting unit 94 and the horizontal position setting unit 95 on the video input from the input video processing unit. To do. The display unit 2 converts the video signal input from the OSD superimposing unit 74 into an optical video. The image projection apparatus further includes a projection unit (not shown) that projects the optical image output from the OSD superimposing unit 74 onto the screen.

  The menu display position adjustment value input unit 80 has a role of inputting a display position adjustment value of a menu displayed when the operation of the image projection apparatus is switched. As indicated by a dotted line, the menu display position adjustment value input unit 80 and the horizontal adjustment value input unit 81 A value input unit 82 is provided. The vertical adjustment value input unit 81 stores a memory for storing a vertical menu display position adjustment value for adjusting the menu display position in the vertical direction, a display button for displaying the adjustment value, and an increase button for moving the menu display position upward And a decrease button that moves down. The vertical menu display position adjustment value indicates that 0 is the center value, and if it is a positive number, it is above the center value. If it is a negative number, it is below the center value. . The horizontal adjustment value input unit 82 stores a memory for storing a horizontal menu display position adjustment value for adjusting the menu display position in the horizontal direction, a display button for displaying the adjustment value, and an increase button for moving the menu display position to the right. And a decrease button that moves to the left. The horizontal menu display position adjustment value indicates that 0 is the center value, and if it is a positive number, it is to the right of the center value. If it is a negative number, it is to the left of the center value. When the horizontal or vertical display button is pressed, the adjustment value is notified to the OSD processing unit 70, and a menu for displaying the menu display position adjustment value is displayed. In this state, when the increase or decrease button is further pressed, the memory for storing the adjustment value is updated, and the updated adjustment value is notified to the OSD processing unit 70 and the menu display position setting unit 90 and displayed. The adjustment value and the display position are changed.

  The menu display position setting unit 90 sets the display position of the menu displayed when switching the operation of the image projection apparatus, and as indicated by the dotted line, the negative sign inversion unit 91, the vertical selection SW 92, the horizontal selection SW 93, the vertical position A setting unit 94 and a horizontal position setting unit 95 are provided. The negative sign inversion unit 91 inverts the negative sign of the output from the horizontal adjustment value input unit 82, and the left and right directions are reversed. The vertical selection SW 92 is controlled by the installation state control unit 1. When the installation state is a positive installation, the vertical menu display position adjustment value input from the vertical adjustment value input unit 81 is negative. When the installation state is a left rotation installation, the vertical selection SW 92 is negative. The horizontal menu display position adjustment value input from the signal inversion unit 91 is output. The horizontal selection SW 93 is controlled by the installation state control unit 1. When the installation state is normal installation, the horizontal menu display position adjustment value input from the horizontal adjustment value input unit 82 is used. When the installation state is left rotation installation, the horizontal selection SW 93 is vertical. The vertical menu display position adjustment value input from the adjustment value input unit 81 is output. The vertical display position setting unit 94 moves the menu display position in the vertical direction in the normal installation according to the adjustment amount input from the vertical selection SW 92. The horizontal display position setting unit 95 moves the menu display position in the horizontal direction in the normal installation according to the adjustment amount input from the horizontal selection SW 93.

  Conventionally, when the left side of the image projection apparatus is set to rotate left by the menu display position setting unit 90, the image projection apparatus moves to the left because it is left when viewed from the user. . Similarly, if you try to move to the left, move downwards, if you try to move down, to the right, if you try to move to the right, it will move up and the operability will be poor. was there. On the other hand, in the present embodiment, when installed counterclockwise, since the up / down / left / right direction is converted to the user viewpoint by the negative sign inversion unit 91, the vertical selection SW 92, and the horizontal selection SW 93, the user can select the menu display position with good operability. Can be adjusted.

  As described above, according to the present embodiment, the vertical and horizontal menu display position can be adjusted with the feeling of the normal installation even when the left rotation is installed, and the user can move the menu display position with good operability. it can. Further, in the present embodiment, for simplification of description, the left rotation installation is limited. However, the right rotation installation is also applied by replacing the negative sign inversion unit 91 between the vertical adjustment value input unit 81 and the horizontal selection SW 93. Is possible.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

1, Installation state control unit 21, 51, 81 Vertical adjustment value input unit 22, 52, 82 Horizontal adjustment value input unit 31, 61, 91 Negative sign inversion unit 32, 62, 92 Vertical selection SW
33, 63, 93 Horizontal selection SW

Claims (6)

A projection optical system for projecting an image onto a projection surface;
Image changing means for changing the shape or position of the image according to a first set value in the first direction of the image and a second set value in a second direction perpendicular to the first direction;
Input means for inputting a first input value corresponding to the first set value and a second input value corresponding to the second set value;
An image projection apparatus capable of projecting the image in both a first installation state and a second installation state rotated 90 degrees from the first installation state,
In the first installation state, the first setting value is generated based on the first input value, and the second setting value is generated based on the second input value,
In the second installation state, the second projection value is generated based on the first input value, and the first projection value is generated based on the second input value. Storage means for storing menu display data for performing various settings of the image projection apparatus;
The menu display means according to claim 1, further comprising: a first menu display state in which the menu display data read from the storage means is displayed as it is, and a second menu display state in which the menu display data is rotated 90 degrees and displayed. An image projection device,
The image display device, wherein the menu display means takes a first display state in the first installation state and takes a second display state in the second installation state. The image projection apparatus according to claim 1, further comprising a determination unit configured to determine whether the apparatus is installed in the first installation state or the second installation state. The image changing unit is a keystone correcting unit that corrects vertical and horizontal trapezoidal distortion of the image according to a vertical keystone setting value in the vertical direction of the image and a horizontal keystone setting value in the horizontal direction. The image projection apparatus according to any one of claims 1 to 3, wherein the image projection apparatus is characterized. The image change means is a projection image shift means for changing a projection position of the image according to a vertical shift setting value in the vertical direction of the image and a horizontal shift setting value in the horizontal direction. The image projection device according to any one of claims 1 to 3. The image changing means is a menu display position changing means for changing the display position of the menu display according to a vertical position setting value in the vertical direction and a horizontal position setting value in the horizontal direction of the image. The image projection apparatus according to claim 2 or 3.