JP2004328321A - Home theater system, seat with projector, and screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a home theater system which allows images to be projected in such a state that a feeling of fatigue is given to viewers as less as possible. <P>SOLUTION: A screen 105 is formed like a circular arc so as to surround a seat 101 in the vertical direction, and a projector 107 projects images in a prescribed direction in accordance with an angle at which a backrest 103 is tilted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a home theater system that displays an image at each home so that the viewer can easily view the image according to the body type of the viewer, the posture of the viewer, or the type of the image.
[0002]
[Prior art]
2. Description of the Related Art In recent years, systems have been provided that allow viewers to watch movies, music, sports, games, and various other images in a relaxed posture. As an example of such an apparatus, for example, there is a so-called home theater system including a seat on which a viewer sits and a display unit arranged in front of the seat (for example, see Patent Document 1). .
[0003]
[Patent Document 1]
JP 2001-86581 A (paragraphs 0007 to 0023, FIGS. 1 to 4)
[0004]
[Problems to be solved by the invention]
By the way, the conventional technology does not intend to display an image so that the viewer can easily see the image according to the body shape of the viewer or the posture of the viewer, and the position where the image is displayed is fixed. Therefore, in the conventional technology, when the viewer changes the posture and views the image, or when a large-sized viewer or a small-sized viewer views the video, the position where the video is projected is determined by the viewer. There was a case where the direction deviated significantly from the preferred direction of the line of sight (that is, the direction of the line of sight that would not give the viewer the most fatigue).
[0005]
The preferred direction of the line of sight of the viewer is generally a direction about 10 to 15 ° below the direction in which the viewer's face is centered on the viewer's eyes. For example, when the viewer's face faces in the horizontal direction, the preferred direction of the line of sight of the viewer is about 10 to 15 degrees below the horizontal with the viewer's eyes as the center. However, the angle of about 10 to 15 ° may differ depending on individual differences between viewers and the type of video to be viewed.
[0006]
The conventional technology hardly gives the viewer a feeling of fatigue when the position where the image is projected is in the direction of the preferred line of sight of the viewer, but the position where the image is projected is largely deviated from the direction of the preferred line of sight of the viewer. When it has, the image becomes difficult to see, giving the viewer a great feeling of fatigue. Therefore, when the viewer changes the posture and watches the image, or even when a large-sized viewer or a small-sized viewer views the video, the position where the video is projected is determined from the direction of the viewer's preferred line of sight. It is demanded that the viewer does not shift and hardly gives the viewer a feeling of fatigue.
[0007]
An object of the present invention is to provide a home theater system capable of solving such a problem and displaying an image in a state in which the viewer is less likely to feel tired as much as possible.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problem, a home theater system according to the present invention includes a seat for seating a viewer who watches an image, a screen for projecting an image, and a projector for projecting an image on the screen. In the home theater system, the seat is provided with a reclining mechanism in which a backrest for supporting a viewer's back tilts backward, and the screen is disposed in front of the seat, and has an arc shape so as to vertically surround the seat. Wherein the projector projects an image at a predetermined position on the screen in accordance with the angle at which the backrest has fallen. Thus, the home theater system according to the present invention can project an image on a predetermined position on the screen according to the angle at which the backrest has fallen.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the drawings are only schematically shown to an extent that the present invention can be understood. In addition, in each of the drawings, common elements are denoted by the same reference numerals, and description thereof is omitted.
[0010]
<First embodiment>
(System configuration)
The configuration of the home theater system according to the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing a configuration of a system according to the first embodiment, and shows a configuration viewed from a side direction (left side of a viewer).
[0011]
As shown in FIG. 1, the home theater system 100 includes a seat 101 for seating a viewer 200 who watches a video, a screen 105 for displaying a video, and a projector 107 for projecting a video on the screen 105. Having.
[0012]
The seat 101 includes a seat portion 102 on which the viewer 200 sits, a backrest 103 for supporting the back of the viewer 200, and a reclining mechanism 104 for tilting the backrest 103 backward. Here, the description will be made on the assumption that the center position of the rotation of the reclining mechanism 104 is at the position where the two-dot chain line H in the horizontal direction and the two-dot chain line V in the vertical direction intersect. FIG. 1 shows an example in which the seat 102 is parallel to the two-dot chain line H in the horizontal direction, and the backrest 103 is parallel to the two-dot chain line V in the vertical direction. .
[0013]
The screen 105 is disposed in front of the sheet 101 and surrounds the sheet 101 in the vertical direction, so that the rotation center position of the reclining mechanism 104 (that is, the horizontal two-dot chain line H and the vertical two-dot chain line V Are formed in an arc shape centering on the position where the 交差 intersects).
[0014]
The projector 107 rotates around the center of rotation of the reclining mechanism 104 (that is, the position where the two-dot chain line H in the horizontal direction and the two-dot chain line V in the vertical direction intersect), and the backrest 103 of the seat 101 falls down. The image is projected in a predetermined direction according to the angle. Here, the predetermined direction is a direction with respect to a position where the screen 105 intersects with a preferred direction of the line of sight of the viewer 200 (that is, a direction of the line of sight that hardly gives the viewer 200 a feeling of fatigue). Is a direction with respect to the position where the screen 105 intersects a direction about 10 to 15 ° below the direction in which the face of the viewer 200 is oriented around the eyes of the viewer 200. However, the angle of about 10 to 15 ° may be different depending on the individual difference of the viewer 200 and the type of the video to be viewed. In the example shown in FIG. 1, the predetermined direction is the angle θ from the backrest 103 to the seat 102 side. ₂ The direction is only inclined.
[0015]
In the example shown in FIG. 1, the direction in which the face of the viewer 200 faces is indicated by a dashed line 301, the preferred direction of the line of sight of the viewer 200 is indicated as a straight line 303, and the image projected by the projector 107 is displayed. , The projection direction of the upper end portion of the image projected by the projector 107 is indicated by a dotted line 307, and the projection direction of the lower end portion of the image projected by the projector 107 is indicated by a dotted line 309. The center plane of the backrest 103 viewed from the side is shown as a straight line 311, and the angle between the alternate long and short dash line 301 and the straight line 303 (that is, about 10 to 15 °) is θ. ₁ And the angle between the backrest 103 and the dashed line 305 is θ ₂ It is shown as Further, in the example shown in FIG. 1, the straight line 311 is shown overlapping with the two-dot chain line V in the vertical direction.
[0016]
(System operation)
The operation of the home theater system 100 will be described below with reference to FIG. Here, a case will be described as an example where the viewer 200 changes the posture and views the video, but the same applies to a case where the viewer 200 with a large body or the viewer 200 with a small body views the video.
[0017]
2A and 2B are diagrams showing the operation of the system according to the first embodiment. FIG. 2A shows a state in which the backrest 103 is not collapsed, and FIG. 2B shows a state in which the backrest 103 is collapsed. ing.
[0018]
As shown in FIG. 2A, in a state where the backrest 103 is not tilted, the viewer 200 makes the angle θ as follows. ₂ Make the settings for Note that the angle θ ₂ The method of setting is not limited to the following, and there are various methods. Here, only an example will be described.
[0019]
First, the viewer 200 sits on the seat 101. At this time, it is assumed that the seat portion 102 of the seat 101 is parallel to the two-dot chain line H in the horizontal direction, and the backrest 103 of the seat 101 is parallel to the two-dot chain line V in the vertical direction.
[0020]
Next, the viewer 200 turns the face in the horizontal direction, activates the projector 107, and projects an image toward the screen 105.
[0021]
Next, the viewer 200 turns the projector 107 in a predetermined direction while watching the image projected by the projector 107. Here, the predetermined direction is a direction with respect to a position where the screen 105 intersects with the preferred direction of the line of sight of the viewer 200 (that is, the direction of the line of sight that is least likely to give the viewer 200 a feeling of fatigue). In the example shown in (a), the angle θ is from the backrest 103 to the seat 102 side. ₂ It is only a tilted direction.
[0022]
Next, the viewer 200 fixes the projector 107 to the backrest 103 or the reclining mechanism 104 by fixing means (not shown). As a result, when the backrest 103 falls down, the projector 107 rotates together with the backrest 103 by the same angle. The fixing means may have various configurations. Here, for example, the projector 107 and the reclining mechanism 104 are connected by a screw member (not shown), and the screw member functions as fixing means.
[0023]
Thereafter, it is assumed that the viewer 200 has tilted the backrest 103 by an arbitrary angle as shown in FIG. In this case, since the projector 107 rotates by the same angle together with the backrest 103, the angle θ is shifted from the backrest 103 to the seat 102 side. ₂ The image is projected only in the tilted direction. The image projected by the projector 107 is projected at a position where the screen 105 intersects a direction about 10 to 15 ° below the direction in which the face of the viewer 200 faces with the eyes of the viewer 200 as the center. This position is located in the direction of a suitable line of sight of the viewer 200.
[0024]
As described above, in the home theater system 100 according to the present embodiment, even when the viewer 200 changes the posture and watches the video, the position where the video is projected does not deviate from the preferred direction of the line of sight of the viewer 200. Therefore, unlike the related art, the image is not difficult to see, and the viewer 200 hardly feels tired.
[0025]
As described above, the same applies to the case where the viewer 200 with a large body or the viewer 200 with a small body views an image. That is, in a state in which the backrest 103 is not tilted, the viewer 200 uses the same method as in the case where the viewer 200 changes his or her posture to view the video, and the angle θ ₂ Make the settings for Accordingly, even when the viewer 200 with a large body or the viewer 200 with a small body views an image, the projector 107 always moves the angle θ from the backrest 103 to the seat 102 side. ₂ The image is projected only in the tilted direction. The image projected by the projector 107 is projected at a position where the screen 105 intersects a direction about 10 to 15 ° below the direction in which the face of the viewer 200 faces with the eyes of the viewer 200 as the center. This position is located in the direction of a suitable line of sight of the viewer 200. Therefore, the home theater system 100 according to the present embodiment, even when the viewer 200 with a large body or the viewer 200 with a small body views a video, the position where the video is projected is shifted from the preferred direction of the line of sight of the viewer 200. Absent. Therefore, unlike the related art, the image is not difficult to see, and the viewer 200 hardly feels tired.
[0026]
As described above, the home theater system 100 according to the present embodiment has a case where the viewer 200 changes the posture and watches the image, or a case where the large viewer 200 or the small viewer 200 views the video. However, the position where the image is projected does not deviate from the direction of the preferred line of sight of the viewer 200. Therefore, unlike the related art, the image is not difficult to see, and the viewer 200 hardly feels tired.
[0027]
<Second embodiment>
In the first embodiment, the projector 107 is fixed to the backrest 103 or the reclining mechanism 104, but in this embodiment, the projector 107 is not fixed.
[0028]
The second embodiment will be described below with reference to FIGS. FIG. 3 is a diagram showing a configuration of a system according to the second embodiment, and shows a configuration viewed from a side direction (left side of a viewer). FIG. 4 is a flowchart showing the operation of the system according to the second embodiment.
[0029]
As shown in FIG. 3, the home theater system 100 according to the present embodiment has an encoder 111 as a detection unit that detects an angle at which the backrest 103 has fallen, and an encoder 111 that detects the angle at which the backrest 103 has fallen. And a control device 113 as control means for controlling the direction of the projector 107 so that the direction of the image projected by the projector 107 becomes a predetermined direction.
[0030]
Here, as shown in FIG. ₃ It is assumed that only one was defeated. At this time, the home theater system 100 performs an operation as shown in FIG.
[0031]
First, in step (hereinafter referred to as S) 101, the encoder 111 sets the angle θ at which the backrest 103 has fallen. ₃ And the detected angle θ ₃ Is output to the control device 113.
[0032]
Next, in S103, the control device 113 transmits the angle θ detected by the encoder 111. ₃ In accordance with the angle θ to rotate the projector 107 in the following manner. ₄ Is calculated. It is assumed that the projector 107 is oriented horizontally in the initial state.
[0033]
That is, the control device 113 sets the angle 90 ° and the angle θ from the seat 102 of the backrest 103 in the initial state. ₃ And the angle θ ₂ (Ie, (90 ° + θ) ₃ ) -Θ ₂ ) To the angle θ ₄ Is calculated as
[0034]
Here, for example, the angle θ is calculated by the following method. ₂ Is stored in the control device 113 in advance. That is, first, the viewer 200 sits on the seat 101, turns the face in the horizontal direction, activates the projector 107, and projects an image toward the screen 105. Next, the projector 107 is turned in a predetermined direction while watching the image projected by the projector 107. At this time, the predetermined direction is an angle θ from the backrest 103 to the seat 102 side. ₂ It will only be tilted. The viewer 200 causes the control device 113 to store this state. Thereby, the control device 113 determines the angle θ at this time. ₂ Is detected and stored.
[0035]
Next, in S105, the control device 113 sets the projector 107 to the angle θ. ₄ Just rotate.
[0036]
Similar to the first embodiment, the home theater system 100 according to this embodiment has a configuration in which the viewer 200 changes the posture and views the video, or a viewer 200 with a large body or a viewer 200 with a small body. When viewing the video, the position where the video is projected does not deviate from the preferred direction of the line of sight of the viewer 200. Therefore, unlike the related art, the image is not difficult to see, and the viewer 200 hardly feels tired.
[0037]
<Third embodiment>
In this type of technology, an image when the viewer 200 is less likely to be tired, an image when the viewer 200 is given a feeling of being immersed, and a video when the viewer 200 is given a sense of openness. It is preferable to change the size of the image depending on the type of image such as an image. However, in this type of technique, the size of the image is fixed, and the size of the image is not selectively changed based on such a viewpoint.
[0038]
Therefore, in this embodiment, an image for making the viewer 200 less likely to feel tired, an image for giving the viewer 200 a feeling of being immersed, and conversely, giving the viewer 200 a sense of openness The angle of view of the image projected by the projector 107 can be arbitrarily changed so that the size of the image can be changed depending on the type of image such as the image in the case.
[0039]
Hereinafter, this embodiment will be described with reference to FIG. FIG. 5 is a diagram showing a configuration of a system according to the third embodiment. FIG. 5A shows a state where the angle of view of an image is widened, and FIG. 5B shows a state where the angle of view of an image is narrowed. The state is shown. In FIG. 5, a dotted line 307 indicates a projection direction of an upper end portion of an image projected by the projector 107, and a dotted line 309 indicates a projection direction of a lower end portion of an image projected by the projector 107.
[0040]
In general, types of video tend to differ between a case where a television, a video, a game, or the like is used as a source, and a case where a computer is used as a source. For example, when a television, a video, a game, or the like is used as a source, a video tends to have a sharp movement. When a computer is used as a source, a video tends to be relatively quiet, such as a document. Therefore, in this embodiment, the source of the video is determined, and the angle of view of the video is switched according to the source of the video.
[0041]
As shown in FIG. 5, the projector 107 includes an optical system adapter 108 for changing the angle of view of a projected image. The projector 107 switches the angle of view of the video as shown in FIG. 5A or 5B according to the source of the video, for example, as follows. That is, first, the projector 107 determines the type of the source of the image input by the control device (not shown). Next, the type of the determined source is output to the optical system adapter 108. Thereby, the optical system adapter 108 switches the angle of view of the image according to the source of the image. For example, when a television, a video, a game, or the like is used as a source, the image is likely to be aggressive, so that the angle of view of the image is widened as shown in FIG. . When a computer is used as a source, an image tends to be relatively quiet, such as a document, so that the outline of the details of the image can be clearly seen as shown in FIG. To narrow the angle of view of the image.
[0042]
Note that such control is not limited to this, and for example, the viewer 200 may appropriately change according to his / her preference after watching the actual video.
[0043]
As described above, according to the present embodiment, the image when the viewer 200 is less likely to be tired, the image when the viewer 200 is given a feeling of being immersed, and conversely, the viewer 200 The angle of view of the image projected by the projector 107 can be arbitrarily changed so that the size of the image can be changed depending on the type of the image, such as an image when the image is given.
[0044]
Also, in this embodiment, the angle of view of the image projected by the projector 107 can be changed according to the type of image and individual differences between the viewers 200, so that the viewer 200 can always view the image in a comfortable posture. You can appreciate it. Therefore, the image does not become difficult to see, and the viewer 200 hardly feels tired.
[0045]
<Fourth embodiment>
In this type of technology, the shapes of the display units are all fixed to a substantially flat shape, and nothing changes the shape of the display unit. However, images such as an image for making the viewer 200 less likely to feel tired, an image for giving the viewer 200 a feeling of being immersed, and a video for giving the viewer 200 a sense of openness. It is preferable to change the shape of the display unit depending on the type of the image.
[0046]
Therefore, in this embodiment, an image for making it difficult for the viewer 200 to feel tired, an image for giving the viewer 200 a feeling of being immersed, and conversely, giving the viewer 200 a sense of openness. The shape of the display unit can be arbitrarily changed depending on the type of video such as a video in such a case.
[0047]
Hereinafter, the fourth embodiment will be described with reference to FIGS. FIG. 6 is a diagram showing a configuration of a system according to the fourth embodiment. FIG. 6A is a perspective view of the screen 106 according to the fourth embodiment as viewed from the front, and FIG. () Is a perspective view of the screen 106 viewed from the rear.
[0048]
As shown in FIG. 6, the screen 106 according to this embodiment includes a curtain member 401, frames 403 and 404, a support portion 405, and engagement members 411 and 421.
[0049]
The curtain member 401 is formed of a flexible material so that the shape can be changed according to the preference of the viewer 200.
[0050]
The frame 403 is a member for expanding the curtain member 401 in the vertical direction. The frame 404 is a member for expanding the curtain member 401 in the horizontal direction.
[0051]
The support portion 405 is a base that supports the frame 403. The support section 405 includes a rail 407 for moving the position of the frame 403, and moves the frame 403 along the rail 407 by a driving unit (not shown).
[0052]
The engagement member 411 is a member that engages the curtain member 401 with the frame 404. The engagement member 421 is a member that engages the curtain member 401, the frame 404, and the frame 403. 7A and 7B are diagrams illustrating a configuration of the engagement member. FIG. 7A illustrates a configuration of the engagement member 411, and FIG. 7B illustrates a configuration of the engagement member 421. As shown in FIG. 7A, the engaging member 411 has a hole 413 for inserting the frame 404 and a hole 415 for passing a thread for sewing the curtain member 401. A fixing means (not shown) for fixing the frame 404 at a predetermined position is provided inside the hole 413. With such a configuration, the engagement member 411 engages the curtain member 401 with the frame 404. The engaging member 421 has a hole 423 for inserting the frame 404, a hole 425 for inserting the frame 403, and a hole 427 for passing a thread for sewing the curtain member 401. A fixing means (not shown) for fixing the frame 404 at a predetermined position is provided inside the hole 423, and a fixing means (not shown) for fixing the frame 403 at a predetermined position is provided inside the hole 425. Are provided. With such a configuration, the engagement member 421 engages the curtain member 401, the frame 404, and the frame 403.
[0053]
The screen 106 having such a configuration switches the angle of view of the image as shown in FIG. 8A, FIG. 8B, or FIG. 8C according to the source of the image, for example, as follows. FIG. 8 is a diagram showing the configuration of a system according to the fourth embodiment. FIG. 8A shows an example in which the screen 106 is developed in a concave shape, and FIG. FIG. 8C shows an example in which the screen 106 is developed in a convex shape.
[0054]
That is, first, the home theater system 100 determines the type of the source of the video input by the control device (not shown). Next, the type of the determined source is output to the support unit 405. Accordingly, the support unit 405 can determine whether or not the image is likely to be intense when the television, video, game, or the like is used as the source according to the source of the image. As shown in FIG. 8C, the angle of view of the video is widened. When a computer is used as a source, an image tends to be relatively quiet, such as a document, so that the outline of the details of the image can be clearly seen in FIG. As shown in FIG. 8A, the angle of view of the video is narrowed.
[0055]
Note that such control is not limited to this, and for example, the viewer 200 may appropriately change according to his / her preference after watching the actual video.
[0056]
For example, in the case of an image in which it is desired to give the viewer 200 a feeling of being immersed, the screen 106 has a concave shape (see FIG. 8A), and in the case of an image in which it is preferable to clearly show the outline to the viewer 200. The screen 106 may have a flat shape (see FIG. 8B), and in the case of an image for which the viewer 200 wants to give a sense of openness, the screen 106 may have a convex shape (see FIG. 8C). In addition, as a video in order to give the viewer 200 a feeling of being immersed, there are a movie, a game, a live music, and the like. In addition, as a video image for which it is preferable to clearly show the outline to the viewer 200, there is a document or the like. In addition, as a video image that wants to give the viewer 200 a sense of openness, there are sports (for example, soccer and rugby) performed in a wide place.
[0057]
As described above, according to the present embodiment, the image when the viewer 200 is less likely to be tired, the image when the viewer 200 is given a feeling of being immersed, and conversely, the viewer 200 The shape of the screen 106 can be arbitrarily changed so that the size of the image can be changed depending on the type of the image, such as an image in the case of giving the image.
[0058]
Also, in this embodiment, the shape of the screen 106 can be changed according to the type of video and individual differences of the viewer 200, so that the viewer 200 can always watch the video in a comfortable posture. . Therefore, the image does not become difficult to see, and the viewer 200 hardly feels tired.
[0059]
<Appendix>
The present invention is not limited to the above embodiment, and various applications and modifications can be considered without departing from the gist of the present invention.
[0060]
For example, in the first embodiment, the angle θ ₂ Is set in a state where the backrest 103 is not tilted, but the setting is not limited to this and can be made at any time.
[0061]
In the first embodiment, the projector 107 is fixed to the backrest 103. However, if the projector 107 can be fixed to the backrest 103 only when necessary, the projector 107 does not need to be fixed at all times.
[0062]
In the first and second embodiments, the projector 107 is used as an example of the display unit. However, a liquid crystal display or a plasma display may be used. FIG. 9 shows a specific configuration of the home theater system 100 in this case.
[0063]
FIG. 9 is a diagram showing a modification of the first or second embodiment. As shown in FIG. 9, the display 321 is arranged on a straight line 303 indicating a preferred line of sight of the viewer 200 by a support member 323 that supports the display 321. At this time, it is preferable that the screen of the display 321 is orthogonal to the straight line 303 so that the viewer 200 can easily see the image, and the support member 323 supports the display 321 to maintain such an arrangement. I have.
[0064]
In the second embodiment, the viewer 200 sets the predetermined direction, but the home theater system 100 may set the predetermined direction. In addition, as shown in FIG. 1, the predetermined direction referred to herein is a direction in which the viewer 105 prefers a line of sight (that is, a direction of the line of sight that is least likely to give the viewer 200 a feeling of fatigue) and the screen 105 intersect. The direction with respect to the position where the screen 105 intersects the direction about 10 to 15 ° below the direction in which the face of the viewer 200 faces the center of the eyes of the viewer 200. is there. However, the angle of about 10 to 15 ° may be different depending on the individual difference of the viewer 200 and the type of the video to be viewed. In the example shown in FIG. 1, the predetermined direction is the angle θ from the backrest 103 to the seat 102 side. ₂ The direction is only inclined.
[0065]
Specifically, for example, the home theater system 100 detects the position of the eyes of the viewer 200 using a sensor (not shown), and thereby detects a predetermined direction (the angle θ from the backrest 103 to the seat 102 side) as follows. ₂ Only tilt direction) can be set.
[0066]
That is, as shown in FIG. 1, the viewer 200 sits on the seat 101 in which the backrest 103 is parallel to the vertical two-dot chain line V, and places the face in the direction of the one-dot chain line 301 (that is, in the horizontal direction). ).
[0067]
FIG. 10 shows the arrangement relationship of each element at this time. Here, the solid line 303 indicates a preferred direction of the line of sight, the dashed line 305 indicates the projection direction of the projector, R indicates the length from the rotation center (origin O) of the projector to the screen, and θ ₁ Indicates the angle between the horizontal direction and the solid line 303, and H ₁ Indicates the height of the line of sight, and H ₂ Is height H ₁ Indicates the height from the point to the intersection of the solid line 303 and the Y axis, and b indicates the height H ₁ And height H ₂ W indicates the width from the eye position of the viewer 200 to the Y axis, P indicates the intersection of the screen 105 and the solid line 303 in the second quadrant, and Q indicates the screen 105 and the solid line 303. At the intersection of the first quadrant. Further, (0, 0) is shown as the coordinate value of the origin O, and (x ₁ , Y ₁ ), And (x ₂ , Y ₂ ).
[0068]
Here, the length R is a set value set according to the operation of the home theater system 100, and the angle θ ₁ Is the standard value of the viewer 200 and the height H ₁ Is a value measured by a sensor (not shown), and the width W is a standard value (or a measured value). Therefore, the length R, the angle θ ₁ , Height H ₁ , Width W are known values.
[0069]
In such a relationship, tan θ ₂ Is tanθ ₂ = | X ₁ | / | Y ₁ |, X ₁ And y ₁ Is determined, the angle θ ₂ Is obtained.
[0070]
Where x ₁ And y ₁ Is a coordinate value at the intersection of the screen 105 and the solid line 303 in the second quadrant, and can be obtained as a point in the second quadrant calculated by the simultaneous equations using the following equations (1) and (2).
[0071]
x ² + Y ² = R ² … (1)
y = ax + b (2)
Here, since a represents the slope of the solid line 303, a = tan θ ₁ It becomes.
[0072]
B is b = H ₁ + H ₂ And H ₂ Is H ₂ = W tan θ ₁ B is b = H ₁ + H ₂ = H ₁ + W · tanθ ₁ It becomes.
[0073]
Therefore, equation (2) is expressed as y = ax + b = tan θ ₁ ・ X + (H ₁ + W · tanθ ₁ ). By substituting this value into equation (1), x ₁ And x ₂ Is determined, and y ₁ And y ₂ Is determined.
[0074]
tanθ ₂ Is tanθ as described above. ₂ = | X ₁ | / | Y ₁ |, The angle θ ₂ Is required.
[0075]
In this manner, the home theater system 100 detects the position of the eyes of the viewer 200 by the sensor (not shown), and thereby detects the position of the eyes of the ₂ Only tilt direction) can be set.
[0076]
【The invention's effect】
The present invention described above has the following effects. In other words, in the home theater system according to the present invention, when the viewer changes the posture and views the image, or even when a large-sized viewer or a small-sized viewer views the video, the position where the video is displayed can be viewed. It does not deviate from the direction of the preferred line of sight of the person. Therefore, the image is not difficult to see, and the viewer hardly feels tired. Therefore, as much as possible, the image can be projected in a state in which the viewer is less likely to feel tired.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a system according to a first embodiment.
FIG. 2 is a diagram showing an operation of the system according to the first embodiment.
FIG. 3 is a diagram illustrating a configuration of a system according to a second embodiment.
FIG. 4 is a flowchart showing an operation of the system according to the second embodiment.
FIG. 5 is a diagram illustrating a configuration of a system according to a third embodiment.
FIG. 6 is a diagram illustrating a configuration of a system according to a fourth embodiment.
FIG. 7 is a diagram illustrating a configuration of an engagement member.
FIG. 8 is a diagram showing a configuration of a system according to a fourth embodiment.
FIG. 9 is a diagram showing a modification of the first or second embodiment.
FIG. 10 is a diagram showing an arrangement relationship of each element.
[Explanation of symbols]
100 home theater system
101 sheets
102 seat
103 Backrest
104 Reclining mechanism
105 screen
107 Projector
200 viewers

Claims (12)

In a home theater system having a seat for seating a viewer watching the video, a screen for displaying the video, and a projector for projecting the video on the screen,
The seat has a reclining mechanism for tilting a backrest supporting a viewer's back backward,
The screen is arranged in front of the sheet, and is formed in an arc shape so as to vertically surround the sheet,
The home theater system, wherein the projector projects an image in a predetermined direction according to an angle at which the backrest has fallen. The said predetermined direction is a direction with respect to a position where the screen intersects a direction 10 to 15 degrees below a direction in which the viewer's face is oriented with the viewer's eyes as the center. A home theater system according to item 1. In a home theater system having a seat for seating a viewer watching the video, a display for displaying the video, and a support mechanism for supporting the display at a predetermined position,
The seat has a reclining mechanism for tilting a backrest supporting a viewer's back backward,
The home theater system, wherein the support mechanism can fix the display at a predetermined position according to an angle at which the backrest has fallen. 4. The home theater system according to claim 3, wherein the predetermined position is in a direction 10 to 15 ° below a direction in which the face of the viewer faces the center of the eyes of the viewer. 5. A projector that projects an image on a screen, and a reclining mechanism for tilting a backrest that supports a back of a viewer who views the image projected on the screen backward,
The projector-equipped seat according to claim 1, wherein the projector projects an image in a predetermined direction according to an angle at which the backrest has fallen. The seat with a projector according to claim 5, wherein the projector can be fixed to the backrest or the reclining mechanism so that the backrest rotates together with the backrest when the backrest falls down. Detecting means for detecting an angle at which the backrest has fallen;
Control means for controlling the direction of the projector, so that the direction of the image projected by the projector is in a predetermined direction according to the angle at which the backrest is detected by the detection means, The sheet with a projector according to claim 5. The sheet with a projector according to any one of claims 5 to 7, wherein the projector can change an angle of view of an image projected on the screen. A screen, which is arranged in front of a seat for seating a viewer who watches an image, and is formed in an arc shape so as to vertically surround the seat. A screen membrane formed of a flexible material,
A variable means for changing a shape of the screen film. The variable means,
A plurality of frames engaging the screen membrane;
The screen according to claim 10, further comprising: a supporting portion that supports some of the plurality of frames and changes a position of the supporting frame. The screen according to claim 10, wherein the variable unit can change the shape of the screen film into a concave shape, a flat shape, or a convex shape.

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