JP2003324669A - System for correcting inclination of projection type projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct an inclination of an image caused by an inclination of a face for a projector to be installed in a projector device. <P>SOLUTION: Although an inclination correction system for the projector system for automatically executing trapezoidal distortion correction by using an inclination sensor has been proposed, a function of correcting the rotating direction with respect to a screen and a function of numerically displaying the inclination have not been provided. The inclination in the front/rear and right/left directions to the screen during installation is automatically corrected by image processing or a motor-driven mechanism in a projection type projector. Furthermore, the correction system can numerically display an inclination amount on the screen in real time so as to facilitate manual adjustment of the inclination during installation. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector device capable of correcting distortion of projected images.

The present invention relates to a projection type projector having an image processing apparatus for correcting an image inclination caused by the inclination of a surface on which the projector is installed, an electric inclination adjustment mechanism, or a manual inclination adjustment mechanism. .

[0003]

2. Description of the Related Art In a projector device for projecting an image generated on a liquid crystal panel or the like on a screen by transmission or reflection, when the optical axis of the projector device is not installed so as to intersect perpendicularly with the center of the projection surface. However, there is a problem that the enlargement ratio of the image when projecting the image on the projection surface becomes uneven in each part.

In other words, assuming that the screen is installed vertically on the wall of a building, it is ideal that the projector body is installed horizontally with respect to the screen in the horizontal direction and in the vertical direction (front-back direction). .

However, in reality, depending on the place where the projector body is installed, the screen is tilted in the left-right direction or the up-down direction (front-back direction), and the user needs to make fine adjustments at the time of installation.

Further, in such a case, in the front projection type projector device, the projector device is arranged in the vicinity of the center of the front of the projection surface, which hinders the viewer from seeing the image on the projection surface. Become.

Therefore, it is necessary to dispose the projector device in such a positional relationship that the optical axis of the projector device is inclined with respect to the projection surface. However, when projecting from an oblique direction, the projected image is distorted. It will be. On the other hand, conventionally, there is known a method of performing distortion correction (keystone correction) by a method based on image conversion processing to obtain an image with little distortion.

FIG. 16 shows an example of a conventional image correction method (see Japanese Patent Laid-Open No. 9-275538).

[0009]

However, as shown in FIG.
In the conventional projector device shown in FIG. 1, since the horizontal conversion and the trapezoidal distortion correction process are performed, it is possible to perform the distortion correction when projecting from the upward direction, the rightward direction, the leftward direction, and the downward direction. There is a problem that the distortion cannot be corrected when the image is rotated and projected in the front-back direction.

The present invention has been made in view of the above circumstances, and has a function of correcting the distortion when the projection is performed on the projection surface in the left-right direction or the front-rear direction with an inclination with respect to the rotation direction. The purpose is to provide a device.

Further, according to the present invention, the tilt amount is detected by the tilt sensor and displayed numerically in real time, so that manual adjustment by a mechanical mechanism can be easily performed when the main body is installed horizontally in the left-right direction or in the front-back direction. It is an object of the present invention to provide a projector device having a function capable of performing the above.

[0012]

In order to solve the above problems, the invention according to claim 1 relates to a projector apparatus,
Image display means for displaying a part or all of the display area of the image of the input video signal, image conversion means for rotationally deforming the image of the input video signal, and rotational deformation of the image by the image converting means. Video projection means for projecting a video signal on a screen, installation angle detection means for detecting the installation angle of the video projection means, and calculation of the rotation amount of the image of the video signal based on the installation angle detected by the installation angle detection means Image rotation amount calculation control means for calculating and controlling the rotation amount of the image of the image conversion means.

The invention according to claim 2 relates to a projector device, and image display means for displaying an image of an input video signal in a part or all of a display area, and the image of the input video signal. An image shift display means for shifting and displaying the area vertically and horizontally, an image projection means for projecting a video signal obtained by shifting and displaying an image on the image shift display means on a screen, and an installation angle of the video projection means are set. Installation angle detection means for detecting, and image shift amount calculation control for calculating the shift display amount of the image of the video signal based on the installation angle detected by the installation angle detection means, and controlling the shift amount of the image shift display means. And means.

According to a third aspect of the present invention, there is provided a projector device, wherein image projection means for projecting an inputted image signal onto a screen, and electric installation angle correction means for correcting the installation angle of the main body in four front-rear, left-right directions. An installation angle detecting means for detecting an installation angle of the image projection means, and a calculation amount of a correction amount of the electric installation angle correcting means based on the installation angle detected by the installation angle detecting means are calculated, Arithmetic control means for controlling the installation angle correction amount.

According to a fourth aspect of the present invention, there is provided a projector device, wherein image projection means for projecting an inputted image signal onto a screen, installation angle detection means for detecting an installation angle of the video projection means, and the installation angle. It is characterized by further comprising an installation angle display means for digitizing the installation angle detected by the detection means and displaying it by character-multiplexing on the video signal.

The invention according to claim 5 relates to a projector device, and image projection means for projecting an input video signal onto a screen, and manual installation angle correction means for correcting the installation angle of the main body in four front, rear, left, and right directions. An installation angle detection means for detecting an installation angle of the image projection means, and an installation angle display means for digitizing and displaying the installation angle detected by the installation angle detection means in the video signal are displayed. And

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIG. 1, the projector device of this example has a video input section 1, an AD conversion section 2 for converting a video signal into a digital signal, and an image converted into a digital signal. Image conversion section 3 for image processing, a DA conversion section 4 for converting the image-converted signal into an analog signal, and a liquid crystal panel drive section 5 for driving a liquid crystal panel.
A liquid crystal panel 7, a lamp 6 serving as a light source, a lens 8 for projecting, an XY tilt sensor 11, a microcomputer 10,
The OSD 9 for displaying a character signal is roughly configured.

Next, the operation of the projector apparatus of this example will be described with reference to FIG.

The video input unit 1 inputs an original image.

The image conversion unit 3 performs distortion correction processing in the image rotation direction and the vertical direction.

The XY tilt sensor 11 is disclosed in Japanese Patent Laid-Open No. 2001-1.
The gravitational acceleration sensor used in the 86538 detects the tilt amount of the projector main body in the horizontal direction and the tilt amount in the vertical direction (front-back direction) with respect to the screen, and sends information to the microcomputer CPU 10.

The microcomputer CPU 10 includes an XY tilt sensor 1
The tilt amount is determined based on the information of No. 1, and the tilt signals in the horizontal direction and the vertical direction are sent to the image conversion unit 3. Image converter 3
Then, the video signal is rotated according to the amount of inclination in the left-right direction set by the CPU 10.

Similarly, the image conversion unit 3 performs the up / down conversion process on the video signal according to the vertical tilt amount set by the CPU 10.

For the convenience of performing the above-described processing, when the signal processing is performed on the entire display screen of the liquid crystal panel, vignetting of an image (a non-displayed area) occurs. For example, 80% of the entire display screen is effectively displayed. The screen. Therefore, in the effective display screen area, the distortion correction range increases if the number is small and the correction range decreases if the number is large.

The image conversion unit 3 is a well-known one that can use a real-time image signal processing capable of handling a moving image using an image memory.

Next, with reference to FIG. 2, the flow of the inclination correction processing in the horizontal direction in the projector apparatus of this example will be described.

In the example of (a), the projector device (not shown) is installed in such a manner that the left and right angles are inclined by -5 degrees with respect to the screen. All display screen 100
80% of the effective display screen 101 is displayed. (A) is an example when the correction process is not performed, and is -5
It is displayed tilted to the right.

In the example of (b), the projector device (not shown) is installed in a state in which the horizontal angle is −5 degrees with respect to the screen, as in the case of (a).
80% of effective display screens for 100% of all display screens
It is displayed as 1. The XY tilt sensor 11 detects a tilt of -5 degrees in the left-right direction, and the image conversion 3 is performed via the CPU 10.
Then, by rotating +5 degrees in the opposite direction to display and project the effective display screen, the horizontal tilt can be corrected horizontally.

Next, with reference to FIG. 3, the flow of the inclination correction processing in the vertical direction (front-back direction on the main body) in the projector apparatus of this example will be described.

In the example of (a), the projector device (not shown) is installed in a state in which the vertical direction (front-back direction on the main body) is inclined by −5 degrees with respect to the screen.

The effective display screen 101, which is 80% of the total display screen 100, is displayed. (A) is an example in the case where the correction processing is not performed, and the display is tilted -5 degrees downward.

In the example of (b), the projector device (not shown) is in a state of being installed with the front-back angle inclined by −5 degrees with respect to the screen, as in the case of (a).
80% of effective display screens for 100% of all display screens
It is displayed as 1. The XY tilt sensor 11 detects a tilt in the front-back direction of -5 degrees, and the image conversion 3 is performed via the CPU 10.
Then, by rotating +5 degrees in the opposite direction and displaying and projecting the effective display screen, it is possible to horizontally correct the tilt in the vertical direction (the front-back direction on the main body).

(Second Embodiment) As shown in FIG. 4, the projector apparatus of this example has a video input section 1, an AD conversion section 2 for converting a video signal into a digital signal, and an image converted into a digital signal. Image conversion section 3 for image processing, a DA conversion section 4 for converting the image-converted signal into an analog signal, and a liquid crystal panel drive section 5 for driving a liquid crystal panel.
A liquid crystal panel 7, a lamp 6 serving as a light source, a lens 8 for projecting, an XY tilt sensor 11, a microcomputer 10,
The OSD 9 for displaying a character signal and the XY tilt correction electric mechanism section 12 for mechanically correcting the XY tilt are roughly configured.

The XY tilt correction electric mechanism section 12 has a motor 501 capable of adjusting the tilt quantity in the left and right directions, a mechanism section (not shown), and a tilt quantity in the vertical direction (front and rear directions on the main body). It is composed of a motor 503 capable of moving and a mechanism part not shown.

Next, the operation of the projector apparatus of this example will be described with reference to FIG. The video input unit 1 inputs an original image.

The image conversion section 3 performs various kinds of digital video processing necessary for the projector device. XY tilt sensor 11
Consists of a gravitational acceleration sensor,
The amount of tilt in the horizontal direction with respect to the screen and the amount of tilt in the vertical direction (front-back direction on the main body) are detected, and information is sent to the microcomputer CPU 10. The microcomputer CPU10 is
The amount of tilt is determined based on the information from the XY tilt sensor 11, and X
The Y tilt correction electric mechanism unit 12 is controlled to perform tilt correction processing of the projector main body according to the amount of tilt in the left-right direction and the vertical direction (front-back direction on the main body).

Next, with reference to FIG. 5, the operation of the XY tilt correction motor mechanism will be described.

(A) is an example of the projector apparatus viewed from above, which is an example of a structure in which the bottom surface is supported by three points. Two of the three fulcrums have a structure in which the support portion expands and contracts due to the rotation of the motor.

(B) is an example of the projector apparatus viewed from the side, in which the tilt of the horizontal direction can be corrected by moving the pillar 502 up and down, and the tilt of the vertical direction can be corrected by moving the pillar 505 up and down. 6, the correction operation in the left-right direction of the XY tilt correction electric mechanism section will be described in more detail.

(A) is an example before the left and right tilt correction, and in this example, the desk in which the projector 500 is installed is tilted by -5 degrees, and as it is, it remains tilted by -5 degrees on the screen. It will be displayed. In the example of the projector 500 viewed from the front, the left and right fixed columns 510 and the movable column 502 determine the inclination in the left-right direction.

The support portion is expanded and contracted by the rotation of the motor 501. A motor 501 that can correct the tilt of the projector 500 in the left-right direction by moving the pillar 502 up and down, and a worm gear 5 attached to the motor shaft.
03 and a threaded post 502. For example,
When the motor 501 rotates forward, the worm gear 503
Of the worm gear 503 and the support column 502 that is meshed with the worm gear 503 moves upward to cause the projector 500 to rotate.
It is possible to correct the tilt of the main body in the left-right direction.

(B) is an example after the left and right inclination is corrected, and is also an example of the case where the projector 500 is viewed from the front, and the column 502 is lowered by the rotation of the motor 501.
An example is shown in which the horizontal inclination of 0 is corrected by +5 degrees.

For example, the CPU 10 uses the XY tilt sensor 1
The tilt of 5 degrees from the left and right is detected from 1, the rotation angle and the direction necessary for the correction are calculated, and the motor 501 is reversely rotated to the rotation angle corresponding to the correction value +5 degrees. Therefore, the worm gear 503 rotates in the reverse direction, and the support column 502 meshing with the worm gear 503 moves downward, whereby the tilt of the projector 500 main body in the left-right direction can be corrected by +5 degrees.

Referring to FIG. 7, the horizontal correction operation of the XY tilt correction electric mechanism will be described with reference to a screen displayed on the screen.

Similar to FIG. 6, an example is shown in which the desk on which the projector 500 is installed is tilted rightward by -5 degrees.

(A) is an example before the horizontal inclination correction, and the effective display screen 101 displayed on the screen is a display inclined to the right by -5 degrees.

(B) is an example after the horizontal inclination is corrected, and shows an example in which the horizontal inclination of the projector 500 is corrected by +5 degrees by lowering the support 502 by rotating the motor 501.

For example, the CPU 10 uses the XY tilt sensor 1
A tilt of -5 degrees in the left-right direction from 1 is detected, and the motor 501
And the worm gear 503 rotates in the reverse direction, and the support column 502 meshing with the worm gear 503 moves downward to correct the inclination of the projector 500 main body in the horizontal direction by +5 degrees.

With reference to FIG. 8, the vertical correction operation of the XY tilt correction electric mechanism will be described in more detail.

(A) is an example before vertical tilt correction. In this example, the desk on which the projector 500 is installed is tilted -5 degrees downward, and the screen is tilted -5 degrees downward. It will be displayed. In the example in which the projector 500 is viewed from the side, the left and right fixed columns 510 and the movable columns 505 determine the inclination in the vertical direction. Motor 5
The structure in which the support portion expands and contracts by the rotation of 04 is adopted.

A motor 50 that can correct the vertical tilt of the projector 500 by moving the support 505 up and down.
4 and a worm gear 506 attached to the motor shaft
And a pillar 505 that is threaded. For example, when the motor 504 rotates in the forward direction, the worm gear 506 rotates in the forward direction, and the support column 50 that meshes with the worm gear 506.
By moving 5 upward, the vertical inclination of the projector 500 main body can be corrected.

(B) is an example in which the vertical tilt is corrected, which is also an example in which the projector 500 is viewed from the side, and the vertical tilt of the projector 500 is +5 degrees by lowering the support 505 by rotating the motor 504. An example of correction will be shown.

For example, for the correction operation, the CPU 10
A tilt of -5 degrees in the vertical direction is detected from the XY tilt sensor 11, the rotation angle and direction required for correction are calculated, and the motor 504 is rotated in the reverse direction up to the rotation angle corresponding to +5 degrees. Therefore, the worm gear 506 rotates in the reverse direction, and the column 505 meshing with the worm gear 506 moves downward, whereby the vertical tilt of the projector 500 main body can be corrected by +5 degrees.

Referring to FIG. 9, the vertical correction operation of the XY tilt correction electric mechanism will be described with reference to a screen displayed on the screen. Similar to FIG. 8, an example is shown in which the desk on which the projector 500 is installed is tilted downward by −5 degrees.

(A) is an example before vertical tilt correction, and the effective display screen 101 displayed on the screen is displayed while being tilted -5 degrees downward with respect to the screen 103.

(B) is an example after vertical tilt correction, and shows an example in which the vertical tilt of the projector 500 is corrected by +5 degrees by lowering the support 505 by rotation of the motor 501.

For example, the CPU 10 uses the XY tilt sensor 1
The inclination of -5 degrees in the vertical direction from 1 is detected, and the motor 504
And the worm gear 506 rotates in the reverse direction, and the support 505 meshing with the worm gear 506 moves downward, whereby the vertical tilt of the projector 500 main body can be corrected by +5 degrees.

(Third Embodiment) In the projector apparatus of this example, as shown in FIG. 10, a video input section 1, an AD conversion section 2 for converting a video signal into a digital signal, and an image converted into a digital signal. Image conversion section 3 for image processing, a DA conversion section 4 for converting the image-converted signal into an analog signal, and a liquid crystal panel drive section 5 for driving a liquid crystal panel.
A liquid crystal panel 7, a lamp 6 serving as a light source, a lens 8 for projecting, an XY tilt sensor 11, a microcomputer 10,
An OSD 9 for displaying a character signal and an XY tilt correction manual mechanism section 13 for mechanically correcting the XY tilt are roughly configured.

The XY tilt correction manual mechanism section 13 comprises a mechanism section 13 capable of manually adjusting the tilt amounts in the left-right direction and the up-down direction (front-back direction on the main body).
The operation of the projector device of this example will be described with reference to FIG. The video input unit 1 inputs an original image.

The image conversion unit 3 performs various kinds of digital video processing necessary for the projector device. XY tilt sensor 11
Is a gravitational acceleration sensor and detects the amount of tilt of the projector main body in the horizontal direction with respect to the screen and the amount of tilt in the vertical direction (front-back direction on the main body).
Information is sent to PU10. The microcomputer CPU10 is X
The amount of tilt is detected from the information of the Y tilt sensor 11, and a character signal is sent to the OSD 9 to display the tilt amounts in the left, right, up, and down directions on the projection screen in real time. While installing the projector, the XY
Since the tilt correction manual mechanism section 13 can be manually adjusted to adjust the tilt in the left-right direction and the up-down direction (front-back direction on the main body), the tilt can be easily adjusted.

FIG. 11 shows an operation flowchart when the XY tilt correction is performed manually.

Next, referring to FIG. 12, the correction operation in the left-right direction of the XY tilt correction manual mechanism will be described in more detail.

(A) is an example before left-right tilt correction, and in this example, the desk on which the projector 500 is installed is -5 in the left-right direction.
An example of a case where the screen is tilted is shown, and the screen shows -5 to the right.
It is displayed with a tilt. In the example of the projector 500 viewed from the front, the left and right fixed columns 510 and the movable column 508 determine the inclination in the left-right direction. The supporting portion is expanded and contracted by the rotation of the rotating ring 507. A rotating ring 507 that can correct the inclination of the projector 500 in the left-right direction by moving the support 508 up and down, and a worm gear 509 attached to the shaft.
And a pillar 508 that is threaded.

For example, when the rotating ring 507 is normally rotated, the worm gear 509 is normally rotated and the worm gear 5 is rotated.
The support 508 that is meshed with 09 is moved upward, so that the tilt of the projector 500 main body in the left-right direction can be corrected.

(B) is an example after the lateral tilt correction, similarly when the projector 500 is viewed from the front. An example in which the horizontal tilt of the projector 500 is corrected by +5 degrees by rotating the rotating ring 507 and lowering the support column 508 will be described.

With reference to FIG. 13, the correction operation in the left-right direction of the XY tilt correction manual mechanism section will be described with reference to a screen displayed on the screen. Similarly to FIG. 12, an example is shown in which the desk on which the projector 500 is installed is tilted to the right by -5 degrees to the right.

(A) is an example before correction of left-right inclination, and the effective display screen 101 displayed on the screen is -5 to the right.
The display is tilted. At the same time, since the horizontal tilt amount of the projector 500 is displayed on the projection screen in real time, the tilt can be adjusted while observing the numerical values.

(B) is an example after the horizontal inclination is corrected, and shows an example in which the horizontal inclination of the projector 500 is corrected by +5 degrees by lowering the support 508 by rotating the rotating ring 507. Since the numerical value indicating the amount of tilt is displayed in real time, it can be easily installed at the target value of 0 degrees.

With reference to FIG. 14, the vertical correction operation of the XY tilt correction manual mechanical unit will be described in more detail.

(A) is an example before vertical tilt correction. In this example, the desk in which the projector 500 is installed is tilted downward by -5 degrees, and the screen is tilted by -5 degrees. It is displayed. In this example, the projector 500 is viewed from the side, and the vertical tilt is determined by the left fixed pillar 510 and the movable pillar 512. The support portion is expanded and contracted by the rotation of the rotating ring 511. A rotating ring 511 that can correct the vertical tilt of the projector 500 by moving the support column 512 up and down, and a worm gear 513 attached to the shaft.
And a threaded post 512.

For example, when the rotating ring 511 is rotated in the normal direction, the worm gear 513 rotates in the normal direction, and the worm gear 5
By moving the support column 512 that is meshed with the support 13 upward, it is possible to correct the vertical tilt of the projector 500 main body.

(B) is an example in which the vertical tilt has been corrected. Similarly, when the projector 500 is viewed from the side, the vertical tilt of the projector 500 is reduced by rotating the rotating ring 511 in the forward direction and lowering the column 512. An example in which the correction is +5 degrees is shown.

Referring to FIG. 15, the vertical correction operation of the XY tilt correction manual mechanical unit will be described with reference to a screen displayed on the screen. Similar to FIG. 14, an example in which the desk on which the projector 500 is installed is tilted downward by −5 degrees is shown.

(A) is an example before vertical tilt correction, and the effective display screen 101 displayed on the screen is -5 below.
The display is tilted. At the same time, since the vertical tilt amount of the projector 500 is displayed on the projection screen in real time, the tilt can be adjusted while watching the numerical value.

(B) is an example after vertical tilt correction, and shows an example in which the vertical tilt of the projector 500 is corrected by +5 degrees by lowering the column 512 by rotating the rotating ring 511. Since the numerical value indicating the amount of tilt is displayed in real time, it can be easily installed at the target value of 0 degrees.

In this example, the target value of the tilt control is described as 0 degrees, but the target value is not limited to 0 degrees, and can be set according to the preference of the user. The tilt control mechanism is not limited to the mechanism shown in the present embodiment, and may be configured to move vertically and horizontally.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. However, it is included in this invention.

[0079]

As described above, according to the projector apparatus of the present invention, it is possible to automatically correct the tilt in the vertical and horizontal directions with respect to the screen when the projector is installed by image processing.

When the projector is installed, tilting in the vertical and horizontal directions with respect to the screen can be automatically corrected by the electric mechanism.

Alternatively, the manual adjustment can be easily performed by numerically displaying the tilt amount on the screen in real time so that the manual adjustment can be easily performed at the time of installation.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a projector device that is a first embodiment of the invention.

FIG. 2 is a diagram showing a screen projection state when the horizontal angle is corrected in the first embodiment.

FIG. 3 is a diagram showing a screen projection state when the vertical angle is corrected in the first embodiment.

FIG. 4 is a block diagram showing the configuration of a projector device that is a second embodiment of the invention.

FIG. 5 is a mechanism diagram of a projector that corrects a left-right up-down angle according to a second embodiment.

FIG. 6 is a front view of a projector mechanism for correcting the left-right angle according to the second embodiment.

FIG. 7 is a diagram showing a screen projection state when the horizontal angle is corrected in the second embodiment.

FIG. 8 is a side view of the mechanism of the projector for correcting the vertical angle in the second embodiment.

FIG. 9 is a diagram showing a screen projection state when the vertical angle is corrected in the second embodiment.

FIG. 10 is a block diagram showing the configuration of a projector device that is a third embodiment of the invention.

FIG. 11 shows an operation flowchart of a projector device according to a third embodiment of the invention.

FIG. 12 is a diagram showing the mechanism of the projector when the horizontal angle is corrected in the third embodiment.

FIG. 13 is a diagram showing a screen projection state when the horizontal angle is corrected in the third embodiment.

FIG. 14 is a diagram showing the mechanism of the projector when the vertical angle is corrected in the third embodiment.

FIG. 15 is a diagram showing a screen projection state when the vertical angle is corrected in the third embodiment.

FIG. 16 is an explanatory diagram of an example of an image correction method in the related art.

[Explanation of symbols]

1 Video input section 1 2 AD converter 3 Image converter 4 DA converter 5 LCD panel drive section 7 LCD panel 6 lamps 8 Projection lens 9 OSD 10 Microcomputer 11 XY tilt sensor 12 XY Tilt correction motorized mechanism

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 21/14 G03B 21/14 Z 5C082 G09G 3/20 660 G09G 3/20 660E 660F 680 680C 3/36 3 / 36 5/00 530 5/00 530M 550 550C H04N 9/31 H04N 9/31 A F term (reference) 2K103 AA05 AA16 AB08 BB07 BB09 CA06 CA34 CA55 CA57 5C006 AA01 AA03 AB01 AB03 AF27 AF34 AF46 AF61 BF38 EC11 50C EA02 5C060 GA06 GD08 JA01 JB06 5C080 AA10 BB05 DD30 EE05 EE22 EE23 GG08 JJ01 JJ02 JJ06 KK43 5C082 AA02 BA02 BA27 BD02 CA42 CA55 CB01 CB05 MM09 MM10

Claims (5)

[Claims] 1. An image display means for displaying a part or all of a display area for an image of an input video signal, an image conversion means for rotationally transforming an image of the input video signal, and the image conversion means. Image projection means for projecting a video signal obtained by rotationally transforming an image on a screen, installation angle detection means for detecting the installation angle of the video projection means, and an image of the video signal based on the installation angle detected by the installation angle detection means An image rotation amount calculation control unit that calculates and calculates the rotation amount of the image conversion unit and controls the rotation amount of the image of the image conversion unit. 2. An image display means for displaying an image of an input video signal in a part or all of a display area, and shifting the image of the input video signal vertically and horizontally with respect to the display area. Image shift display means for displaying, image projection means for projecting a video signal on which an image is shifted and displayed by the image shift display means onto a screen, installation angle detection means for detecting an installation angle of the video projection means, and the installation angle Image shift amount calculation control means for calculating the shift display amount of the image of the video signal based on the installation angle detected by the detection means, and controlling the shift amount of the image shift display means. Projector device. 3. An image projection means for projecting an inputted image signal on a screen, an electric installation angle correction means for correcting the installation angle of the main body in four front, rear, left and right directions, and an installation for detecting the installation angle of the image projection means. Angle detection means, and calculation control means for calculating the correction amount of the electric installation angle correction means based on the installation angle detected by the installation angle detection means, and controlling the installation angle correction amount of the electric installation angle correction means. A projector device comprising: 4. An image projection means for projecting an input image signal onto a screen, an installation angle detection means for detecting an installation angle of the image projection means, and an installation angle detected by the installation angle detection means being digitized. A projector device comprising an installation angle display means for displaying the video signal in a character-multiplexed manner. 5. A video projection means for projecting an input video signal onto a screen, a manual installation angle correction means for correcting the installation angle of the main body in four front, rear, left and right directions, and an installation for detecting the installation angle of the video projection means. A projector device comprising: an angle detection unit; and an installation angle display unit that digitizes the installation angle detected by the installation angle detection unit and character-multiplexes and displays the video signal on the video signal.