Stereoscopic video display apparatus
First Claim
1. A stereoscopic video display apparatus comprising:
- a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images being derived from a video signal supplied to the stereoscopic video display apparatus from an applied video signal source, said right-eye and left-eye images composing a stereoscopic image to be seen by the viewer; and
an image shifting means for performing a horizontal shift on at least one of said right-eye image and left-eye image displayed on said displaying means;
wherein;
said image shifting means comprises controlling means for controlling the horizontal shift such that a distance of convergence caused by the right-eye image and the left-eye image displayed on the displaying means is maintained substantially constant on a time domain despite a change in the video signal.
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Accused Products
Abstract
An apparatus for displaying a stereoscopic image including right-eye and left-eye image display devices displaying right-eye and left-eye images, respectively, right-eye and left-eye magnifying lenses forming enlarged virtual right-eye and left-eye images, respectively, an eye point camera for detecting a point in a sight at which a viewer gazes, a parallax calculating circuit for deriving a parallax of the gazed point, a image shift amount calculating circuit for calculating an amount of image shift in accordance with the parallax, and an image shift circuits for shifting the right-eye and left-eye images horizontally in opposite direction by the same amount such that a distance of convergence with respect to the gazing point is substantially fixed. It is preferable to shift the right-eye and left-eye images such that the distance of convergence becomes substantially equal to a viewing distance from eyes of the viewer to a virtual image plane.
82 Citations
33 Claims
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1. A stereoscopic video display apparatus comprising:
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a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images being derived from a video signal supplied to the stereoscopic video display apparatus from an applied video signal source, said right-eye and left-eye images composing a stereoscopic image to be seen by the viewer; and an image shifting means for performing a horizontal shift on at least one of said right-eye image and left-eye image displayed on said displaying means; wherein; said image shifting means comprises controlling means for controlling the horizontal shift such that a distance of convergence caused by the right-eye image and the left-eye image displayed on the displaying means is maintained substantially constant on a time domain despite a change in the video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A stereoscopic video display apparatus comprising:
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a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images composing a stereoscopic image; an image shifting means for performing a horizontal shift on at least one of said right-eye image and said left-eye image displayed on said displaying means such that a distance of convergence is maintained substantially constant on a time domain and becomes substantially identical with a viewing distance; denoting means for denoting a part of an image display area of the displaying means; parallax calculating means for calculating a parallax of the part of the image display area denoted by the denoting means; and determining means for determining an amount of the horizontal shift in accordance with the parallax, the image shifting means shifting at least one of the right-eye and left-eye images by said amount determined by the determining means.
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31. A stereoscopic video display apparatus comprising:
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a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images composing a stereoscopic image; and an image shifting means for performing a horizontal shift on at least one of said right-eye image and said left-eye image displayed on said displaying means such that a distance of convergence is maintained substantially constant on a time domain and becomes substantially identical with a viewing distance; the displaying means displaying a black stripe having a width substantially equal to an amount of the horizontal shift (i) at a right side of said at least one of the right-eye image and the left-eye image when the horizontal shift is leftward and (ii) at a left side of said at least one of the right-eye image and the left-eye image when the horizontal shift is rightward.
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32. A stereoscopic video display apparatus comprising:
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a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images composing a stereoscopic image, said displaying means comprising a right-eye image display device and a left-eye image display device; an image shifting means for performing a horizontal shift on at least one of said right-eye image and left-eye image displayed on said displaying means such that a distance of convergence is maintained substantially constant on a time domain; a right-eye magnifying lens for generating a virtual image of the right-eye image which can be seen by the right eye of the viewer; a left-eye magnifying lens for generating a virtual image of the left-eye image which can be seen by the left eye of the viewer; denoting means for denoting a part of an image display area of the displaying means; parallax calculating means for calculating a parallax of the part of the image display area denoted by the denoting means; and determining means for determining an amount of the horizontal shift in accordance with the parallax, the image shifting means shifting at least one of the right-eye and left-eye images by said amount determined by the determining means; said image shifting means performing the horizontal shift on at least one of the left-eye and right-eye images to satisfy
space="preserve" listing-type="equation">1/L-2<
(tan θ
.sub.R +tan θ
.sub.L)/d<
1/L+2 (L≦
0.5)
space="preserve" listing-type="equation">0<
(tan θ
.sub.R +tan θ
.sub.L)/d<
1/L+2 (L>
0.5)wherein L(m) is a distance from the right and left eyes of the viewer to a plane on which the virtual images are formed, θ
R is an angle between a line of sight of the right eye of the viewer and a normal line to said plane, θ
L is an angle between a line of sight of the left eye of the viewer and said normal line to said plane, and d(m) is a distance between the right and left eyes of the viewer.
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33. A stereoscopic video display apparatus comprising:
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a displaying means for displaying a right-eye image to be exclusively seen by a right eye of a viewer and a left-eye image to be exclusively seen by a left eye of the viewer, said right-eye and left-eye images composing a stereoscopic image, said displaying means comprising a right-eye image display device and a left-eye image display device; an image shifting means for performing a horizontal shift on at least one of said right-eye image and left-eye image displayed on said displaying means such that a distance of convergence is maintained substantially constant on a time domain; a right-eye magnifying lens for generating a virtual image of the right-eye image which can be seen by the right eye of the viewer; and a left-eye magnifying lens for generating a virtual image of the left-eye image which can be seen by the left eye of the viewer; said image shifting means performing the horizontal shift on at least one of the left-eye and right-eye images to satisfy
space="preserve" listing-type="equation">1/L-2<
(tan θ
.sub.R +tan θ
.sub.L)/d<
1/L+2 (L≦
0.5)
space="preserve" listing-type="equation">0<
(tan θ
.sub.R +tan θ
.sub.L)/d<
1/L+2 (L>
0.5)wherein L(m) is a distance from the right and left eyes of the viewer to a plane on which the virtual images are formed, θ
R is an angle between a line of sight of the right eye of the viewer and a normal line to said plane, θ
L is an angle between a line of sight of the left eye of the viewer and said normal line to said plane, and d(m) is a distance between the right and left eyes of the viewer; andthe displaying means displaying a black stripe having a width substantially equal to an amount of the horizontal shift (i) at a right side of said at least one of the right-eye image and the left-eye image when the horizontal shift is leftward and (ii) at a left side of said at least one of the right-eye image and the left-eye image when the horizontal shift is rightward.
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Specification