Patent US6304288B1 successfully refreshed from Google Patents.
US6304288B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head position detecting device and head tracking stereoscopic display
Assignee: Sanyo Electric Co Ltd
•
Filing: 1998-05-27
•
Granted: 2001-10-16
•
Expires: 2018-05-27
Abstract
Abstract A head tracking stereoscopic display includes a first combining light source composed of two line-shaped light sources and a second combining light source composed of two line-shaped light sources. The first combining light source is used when the head of a viewer is shifted a distance between the eyes E in a horizontal direction on the basis of a predetermined position. The second combining light source is used when the head of the viewer is shifted a distance between the eyes E in the horizontal direction on the basis of a position that shifts E/2 from the predetermined position. When the first combining light source is selected, the two line-shaped light sources in the first combining light source are alternately turned on and off. When the second combining light source is selected, the two line-shaped light sources in the second combining light source are alternately turned on and off. A right eye image and a left eye image are alternately displayed in synchronization with the alternate ON/OFF on an image display panel. The control that changes the timing at which the images are alternately displayed and the control that selects the combining light source is carried out based on the detected head position determined by a head position detector.
Inventors
- 👤 Goro Hamagishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:00
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/398; H04N13/302; H04N13/305; H04N13/31; H04N13/32; H04N13/346; H04N13/366; H04N13/376; H04N13/10; H04N13/20
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
455 words
A head tracking stereoscopic display comprising: light emitting means comprising at least two combining light sources, each combining light source comprised of a set of two line-shaped light sources for one of the eyes and the other eye, the two line-shaped light sources being for a first area and a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area; a diffusing screen provided on the light emission side of said light emitting means; a first lenticular long screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen; a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes; an image display panel provided on the light emission side of the second lenticular lens screen; light source control means for alternately turning one of the line-shaped light sources and the other line-shaped light source in a selected one combining light source on and off; display control means for alternately displaying one of the images and the other image which have binocular parallax on said image display panel in synchronization with an alternate ON/OFF of said line-shaped light sources; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control as to change the timing of an alternate display of the images and select the line-shaped light sources on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to perform basic processing in selecting the timing of the alternate display of the images and the combining light sources when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while changing the timing of the alternate display of one of the images and the other image which have binocular parallax using as a light source to be selected the line-shaped light sources for the first area as it is when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 2
Dependent Claim
455 words
A head tracking stereoscopic display comprising: light emitting means comprising at least two combining light sources, each combining light source comprised of a set of two line-shaped light sources for one of the eyes and the other eye, the two line-shaped light sources being for a first area and a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area; a diffusing screen provided on the light emission side of said light emitting means; a first lenticular long screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen; a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes; an image display panel provided on the light emission side of the second lenticular lens screen; light source control means for alternately turning one of the line-shaped light sources and the other line-shaped light source in a selected one combining light source on and off; display control means for alternately displaying one of the images and the other image which have binocular parallax on said image display panel in synchronization with an alternate ON/OFF of said line-shaped light sources; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control as to change the timing of an alternate display of the images and select the line-shaped light sources on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to perform basic processing in selecting the timing of the alternate display of the images and the combining light sources when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while changing the timing of the alternate display of one of the images and the other image which have binocular parallax using as a light source to be selected the line-shaped light sources for the first area as it is when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 3
Dependent Claim
99 words
The head tracking stereoscopic display according to claim 1 , wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, as to select the two-lined light sources for the second area and suitably change or maintain the alternate display when the viewer moves to an area indicated by {(1+2n)/2−¼}×E<A<{(1+2n)/2+¼}×E on the basis of the center of the stereoscopic position right in front of the screen.
Claim 4
Dependent Claim
404 words
A head tracking stereoscopic display comprising: light emitting means comprising at least two combining light sources each combining light source comprised of a set of two line-shaped light sources for one of the eyes and the other eye, the two line-shaped light sources being for a first area and a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area; a diffusing screen provided on the light emission side of said light emitting means; a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen; a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes; an image display panel provided on the light emission side of the second lenticular lens screen; light source control means for alternately turning one of the line-shaped light sources and the other line-shaped light source in a selected one combining light source on and off; display control means for alternately displaying one of the images and the other image which have binocular parallax on said image display panel in synchronization with an alternate ON/OFF of said line-shaped light sources; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control as to change the timing of an alternate display of the images and select the line-shaped light sources on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of the viewer, H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means, the pitch S between the line-shaped light sources in each of the combining light sources satisfies the following equation: S=K×E×J/(L×H).
Claim 5
Dependent Claim
404 words
A head tracking stereoscopic display comprising: light emitting means comprising at least two combining light sources each combining light source comprised of a set of two line-shaped light sources for one of the eyes and the other eye, the two line-shaped light sources being for a first area and a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area; a diffusing screen provided on the light emission side of said light emitting means; a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen; a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes; an image display panel provided on the light emission side of the second lenticular lens screen; light source control means for alternately turning one of the line-shaped light sources and the other line-shaped light source in a selected one combining light source on and off; display control means for alternately displaying one of the images and the other image which have binocular parallax on said image display panel in synchronization with an alternate ON/OFF of said line-shaped light sources; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control as to change the timing of an alternate display of the images and select the line-shaped light sources on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of the viewer, H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means, the pitch S between the line-shaped light sources in each of the combining light sources satisfies the following equation: S=K×E×J/(L×H).
Claim 6
Dependent Claim
55 words
The head tracking stereoscopic display according to claim 3 , wherein letting F be the focal length of each of semi-cylindrical lens portions constituting the second lenticular lens screen, and G be the focal length of each of the semi-cylindrical lens portions constituting the first lenticular lens screen, the following equations are satisfied: F=J×H/(H−J) G=L×K/(K−L).
Claim 7
Dependent Claim
50 words
The head tracking stereoscopic display according to claim 3 , wherein letting P be the pitch between the semi-cylindrical lens portions constituting the second lenticular lens screen, and Q be the pitch between the semi-cylindrical lens portions constituting the first lenticular lens screen, the following equations are satisfied: P=2×E×J/(J+H) Q=2×K×E×J/(H×(L+K)).
Claim 8
Dependent Claim
25 words
The head tracking stereoscopic display according to claim 3 , wherein letting n be an integer, the pitch between the combining light sources satisfies (n+½)×S.
Claim 9
Dependent Claim
361 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a first light source comprised of a set of two line-shaped light sources and a second light source comprised of the other set of two line-shaped light sources, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for fixedly displaying one of images and the other image which have binocular parallax, respectively, on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system; head position detection means for detecting the position of the head of a viewer; and control means for carrying out control to select light emission of the line-shaped light sources in said first and second light sources on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to select one of the line-shaped light sources in the first light source when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while selecting the other line-shaped light source in the first light source when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 10
Dependent Claim
361 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a first light source comprised of a set of two line-shaped light sources and a second light source comprised of the other set of two line-shaped light sources, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for fixedly displaying one of images and the other image which have binocular parallax, respectively, on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system; head position detection means for detecting the position of the head of a viewer; and control means for carrying out control to select light emission of the line-shaped light sources in said first and second light sources on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to select one of the line-shaped light sources in the first light source when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while selecting the other line-shaped light source in the first light source when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 11
Dependent Claim
96 words
The head tracking stereoscopic display according to claim 7 , wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to suitably select either one of the two line-shaped light sources in the second light source when the viewer moves to an area indicated by {(1+2n)/2−¼}×E<A<{(1+2n)/2+¼}×E on the basis of the center of the stereoscopic position right in front of the screen.
Claim 12
Dependent Claim
351 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a first light source comprised of a set of two line-shaped light sources and a second light source comprised of the other set of two line-shaped light sources, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for fixedly displaying one of images and the other image which have binocular parallax, respectively, on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system; head position detection means for detecting the position of the head of a viewer; and control means for carrying out control to select light emission of the line-shaped light sources in said first and second light sources on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of a viewer, and H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means in each of the one-eye systems, the pitch S between the line-shaped light sources in each of the light sources satisfies the following equation: S=K×E×J/(L×H).
Claim 13
Dependent Claim
351 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a first light source comprised of a set of two line-shaped light sources and a second light source comprised of the other set of two line-shaped light sources, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for fixedly displaying one of images and the other image which have binocular parallax, respectively, on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system; head position detection means for detecting the position of the head of a viewer; and control means for carrying out control to select light emission of the line-shaped light sources in said first and second light sources on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of a viewer, and H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means in each of the one-eye systems, the pitch S between the line-shaped light sources in each of the light sources satisfies the following equation: S=K×E×J/(L×H).
Claim 14
Dependent Claim
61 words
The head tracking stereoscopic display according to claim 9 , wherein letting F be the focal length of each of the semi-cylindrical lens portions constituting the second lenticular lens screen, and G be the focal length of each of semi-cylindrical lens portions constituting the first lenticular lens screen in each of the one-eye systems, the following equations are satisfied: F=J×H/(H−J) G=L×K/(K−L).
Claim 15
Dependent Claim
56 words
The head tracking stereoscopic display according to claim 9 , wherein letting P be the pitch between the semi-cylindrical lens portions constituting the second lenticular lens screen, and Q be the pitch between the semi-cylindrical lens portions constituting the first lenticular lens screen in each of the one-eye systems, the following equations are satisfied: P=2×E×J/(J+H) Q=2×K×E×J/(H×(L+K)).
Claim 16
Dependent Claim
24 words
The head tracking stereoscopic display according to claim 9 , wherein letting n be an integer, the pitch between the light sources satisfies (n+½)×S.
Claim 17
Dependent Claim
387 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a line-shaped light source for a first area and a line-shaped light source for a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first areas, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for respectively displaying one of images and the other image which have binocular parallax on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system so as to be switchable; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control to select light emission of the line-shaped light sources and switch the images displayed on said image display panel on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to select the line-shaped light source for the first area when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while selecting the line-shaped light source for the first area and switching the images displayed on said image display panel when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 18
Dependent Claim
387 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a line-shaped light source for a first area and a line-shaped light source for a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first areas, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for respectively displaying one of images and the other image which have binocular parallax on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system so as to be switchable; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control to select light emission of the line-shaped light sources and switch the images displayed on said image display panel on the basis of information relating to the head position from said head position detection means, wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to select the line-shaped light source for the first area when the viewer is in an area indicated by (2n−½)×E≦A≦(2n+½)×E on the basis of the center of the stereoscopic position right in front of the screen, while selecting the line-shaped light source for the first area and switching the images displayed on said image display panel when the viewer moves to an area indicated by {(2n+1)−½}×E<A<{(2n+1)+½}×E.
Claim 19
Dependent Claim
101 words
The head tracking stereoscopic display according to claim 13 , wherein said control means is constructed to carry out control, letting n be an integer, E be the distance between the eyes of the viewer, and A be the horizontal distance from the center of a stereoscopic position right in front of a screen, to select the line-shaped light source for the second area and suitably switch the images displayed on said image display panel when the viewer moves to an area indicated by {(1+2n)/2−¼}×E<A<{(1+2n)/2+¼}×E on the basis of the center of the stereoscopic position right in front of the screen.
Claim 20
Dependent Claim
369 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a line-shaped light source for a first area and a line-shaped light source for a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for respectively displaying one of images and the other image which have binocular parallax on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system so as to be switchable; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control to select light emission of the line-shaped light sources and switch the images displayed on said image display panel on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of the viewer, and letting H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means in each of the one-eye systems, the width M of each of the line-shaped light sources satisfies the following equation: M=K×E×J/(L×H).
Claim 21
Dependent Claim
369 words
A head tracking stereoscopic display comprising: two one-eye systems each comprising light emitting means comprising a line-shaped light source for a first area and a line-shaped light source for a second area in a position shifted by approximately E/2 (E is the distance between the eyes of a viewer) in the horizontal direction from the first area, a diffusing screen provided on the light emission side of said light emitting means, a first lenticular lens screen provided between said diffusing screen and the light emitting means for focusing light from a selected one of the line-shaped light sources and alternately forming bright portions and dark portions on said diffusing screen by semi-cylindrical lens portions constituting the first lenticular lens screen, a second lenticular lens screen provided on the light emission side of said diffusing screen and having the function of taking each of said bright portions formed on the diffusing screen as a light source for either one of the eyes, and an image display panel provided on the light emission side of the second lenticular lens screen; image supply means for respectively displaying one of images and the other image which have binocular parallax on the image display panel in one of the one-eye systems and the image display panel in the other one-eye system so as to be switchable; head position detection means for detecting the position of the head of the viewer; and control means for carrying out control to select light emission of the line-shaped light sources and switch the images displayed on said image display panel on the basis of information relating to the head position from said head position detection means, wherein letting E be the distance between the eyes of the viewer, and letting H be the distance between the viewer and the second lenticular lens screen, J be the distance between the second lenticular lens screen and the diffusing screen, L be the distance between the diffusing screen and the first lenticular lens screen, and K be the distance between the first lenticular lens screen and the light emitting means in each of the one-eye systems, the width M of each of the line-shaped light sources satisfies the following equation: M=K×E×J/(L×H).
Claim 22
Dependent Claim
62 words
The head tracking stereoscopic display according to claim 15 , wherein letting F be the focal length of each of the semi-cylindrical lens portions constituting the second lenticular lens screen, and G be the focal length of each of the semi-cylindrical lens portions constituting the first lenticular lens screen in each of the one-eye systems, the following equations are satisfied: F=J×H/(H−J) G=L×K/(K−L).
Claim 23
Dependent Claim
56 words
The head tracking stereoscopic display according to claim 15 , wherein letting P be the pitch between the semi-cylindrical lens portions constituting the second lenticular lens screen, and Q be the pitch between the semi-cylindrical lens portions constituting the first lenticular lens screen in each of the one-eye systems, the following equations are satisfied: P=2×E×J/(J+H) Q=2×K×E×J/(H×(L+K)).
Claim 24
Dependent Claim
25 words
The head tracking stereoscopic display according to claim 15 , wherein letting n be an integer, the pitch between the line-shaped light sources satisfies (n+½)×M.
Claim 25
Dependent Claim
128 words
A head position detecting device comprising: light receiving means constructed by arranging a first light receiving device for a stereoscopic area and a second light receiving device for a pseudostereoscopic area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area and light reflected from the face of the viewer positioned in the pseudostereoscopic area into said first light receiving device and said second light receiving device; and judgment means for comparing the amount of the light detected in said first light receiving device and the amount of the light detected in said second light receiving device, to judge which of the stereoscopic area and the pseudostereoscopic area is an area where the viewer is positioned.
Claim 26
Dependent Claim
128 words
A head position detecting device comprising: light receiving means constructed by arranging a first light receiving device for a stereoscopic area and a second light receiving device for a pseudostereoscopic area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area and light reflected from the face of the viewer positioned in the pseudostereoscopic area into said first light receiving device and said second light receiving device; and judgment means for comparing the amount of the light detected in said first light receiving device and the amount of the light detected in said second light receiving device, to judge which of the stereoscopic area and the pseudostereoscopic area is an area where the viewer is positioned.
Claim 27
Dependent Claim
66 words
The head position detecting device according to claim 19 , wherein letting E be the distance between the eyes, A1 be the distance between said lens means and the viewer, B1 be the distance between said lens means and said light receiving means, and P1 be the pitch between the first light receiving device and the second light receiving device, the following equation is satisfied: P1=E×B1/A1.
Claim 28
Dependent Claim
61 words
The head position detecting device according to claim 19 , wherein letting E be the distance between the eyes of the viewer, A1 be the distance between said lens means and the viewer, B1 be the distance between said lens means and said light receiving means, and Q1 be the pitch between the lens means, the following equation is satisfied: Q1=2×E×B1/(A1+B1).
Claim 29
Dependent Claim
62 words
The head position detecting device according to claim 19 , wherein letting E be the distance between the eyes of the viewer, A1 be the distance between said lens means and the viewer, B1 be the distance between said lens means and said light receiving means, and F1 be the focal length of said lens means, the following equation is satisfied: F1=A1×B1/(A1+B1).
Claim 30
Dependent Claim
22 words
The head position detecting device according to claim 19 , wherein a plurality of lens means are arranged in the horizontal direction.
Claim 31
Dependent Claim
27 words
The head position detecting device according to claim 23 , wherein a lenticular lens is used as the plurality of lens means arranged in the horizontal direction.
Claim 32
Dependent Claim
218 words
A head position detecting device comprising: light receiving means constructed by arranging a first light receiving device for a stereoscopic area, a second light receiving device for a pseudostereoscopic area, a third light receiving device for a first crosstalk area, and a fourth light receiving device for a second crosstalk area in the horizontal direction; lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area, light reflected from the face of the viewer positioned in the pseudostereoscopic area, light reflected from the face of the viewer positioned in the first crosstalk area, and light reflected from the face of the viewer positioned in the second crosstalk area into said first light receiving device, said second light receiving device, said third light receiving device, and said fourth light receiving device; and judgment means for comparing the amount of the light detected in said first light receiving device, the amount of the light detected in said second light receiving device, the amount of the light detected in said third light receiving device, and the amount of the light detected in said fourth light receiving device, to judge which of the stereoscopic area, the pseudostereoscopic area, the first crosstalk area, and the second crosstalk area is an area where the viewer is positioned.
Claim 33
Dependent Claim
218 words
A head position detecting device comprising: light receiving means constructed by arranging a first light receiving device for a stereoscopic area, a second light receiving device for a pseudostereoscopic area, a third light receiving device for a first crosstalk area, and a fourth light receiving device for a second crosstalk area in the horizontal direction; lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area, light reflected from the face of the viewer positioned in the pseudostereoscopic area, light reflected from the face of the viewer positioned in the first crosstalk area, and light reflected from the face of the viewer positioned in the second crosstalk area into said first light receiving device, said second light receiving device, said third light receiving device, and said fourth light receiving device; and judgment means for comparing the amount of the light detected in said first light receiving device, the amount of the light detected in said second light receiving device, the amount of the light detected in said third light receiving device, and the amount of the light detected in said fourth light receiving device, to judge which of the stereoscopic area, the pseudostereoscopic area, the first crosstalk area, and the second crosstalk area is an area where the viewer is positioned.
Claim 34
Dependent Claim
62 words
The head position detecting device according to claim 25 , wherein letting E be the distance between the eyes of the viewer, A2 be the distance between said lens means and the viewer, B2 be the distance between said lens means and said light receiving means, and P2 be the pitch between the light receiving devices, the following equation is satisfied: P2=E×B2/(2×A2).
Claim 35
Dependent Claim
61 words
The head position detecting device according to claim 25 , wherein letting E be the distance between the eyes of the viewer, A2 be the distance between said lens means and the viewer, B2 be the distance between said lens means and said light receiving means, and Q2 be the pitch between the lens means, the following equation is satisfied: Q2=2×E×B2/(A2+B2).
Claim 36
Dependent Claim
62 words
The head position detecting device according to claim 25 , wherein letting E be the distance between the eyes of the viewer, A2 be the distance between said lens means and the viewer, B2 be the distance between said lens means and said light receiving means, and F2 be the focal length of said lens means, the following equation is satisfied: F2=A2×B2/(A2+B2).
Claim 37
Dependent Claim
22 words
The head position detecting device according to claim 25 , wherein a plurality of lens means are arranged in the horizontal direction.
Claim 38
Dependent Claim
27 words
The head position detecting device according to claim 29 , wherein a lenticular lens is used as the plurality of lens means arranged in the horizontal direction.
Claim 39
Dependent Claim
235 words
A head tracking stereoscopic display comprising: a head position detecting device comprising light receiving means constructed by arranging a first light receiving device for a stereoscopic area and a second light receiving device for a pseudostereoscopic area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area and light reflected from the face of the viewer positioned in the pseudostereoscopic area into said first light receiving device and said second light receiving device, and judgment means for comparing the amount of the light detected in said first light receiving device and the amount of the light detected in said second light receiving device, to judge which of the stereoscopic area and the pseudostereoscopic area is an area where the viewer is positioned, the head tracking stereoscopic display being constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the stereoscopic area when a signal indicating that the viewer is positioned in the stereoscopic area is obtained in said head position detecting device, and constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the pseudostereoscopic area when a signal indicating that the viewer is positioned in the pseudostereoscopic area is obtained.
Claim 40
Dependent Claim
235 words
A head tracking stereoscopic display comprising: a head position detecting device comprising light receiving means constructed by arranging a first light receiving device for a stereoscopic area and a second light receiving device for a pseudostereoscopic area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area and light reflected from the face of the viewer positioned in the pseudostereoscopic area into said first light receiving device and said second light receiving device, and judgment means for comparing the amount of the light detected in said first light receiving device and the amount of the light detected in said second light receiving device, to judge which of the stereoscopic area and the pseudostereoscopic area is an area where the viewer is positioned, the head tracking stereoscopic display being constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the stereoscopic area when a signal indicating that the viewer is positioned in the stereoscopic area is obtained in said head position detecting device, and constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the pseudostereoscopic area when a signal indicating that the viewer is positioned in the pseudostereoscopic area is obtained.
Claim 41
Dependent Claim
417 words
A head tracking stereoscopic display comprising: a head position detecting device comprising light receiving means constructed by arranging a first light receiving device for a stereoscopic area, a second light receiving device for a pseudostereoscopic area, a third light receiving device for a first crosstalk area, and a fourth light receiving device for a second crosstalk area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area, light reflected from the face of the viewer positioned in the pseudostereoscopic area, light reflected from the face of the viewer positioned in the first crosstalk area, and light reflected from the face of the viewer positioned in the second crosstalk area into said first light receiving device, said second light receiving device, said third light receiving device, and said fourth light receiving device, and judgment means for comparing the amount of the light detected in said first light receiving device, the amount of the light detected in said second light receiving device, the amount of the light detected in said third light receiving device, and the amount of the light detected in said fourth light receiving device, to judge which of the stereoscopic area, the pseudostereoscopic area, the first crosstalk area, and the second crosstalk area is an area where the viewer is positioned, the head tracking stereoscopic display being constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the stereoscopic area when a signal indicating that the viewer is positioned in the stereoscopic area is obtained in said head position detecting device, constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the pseudostereoscopic area when a signal indicating that the viewer is positioned in the pseudostereoscopic area is obtained, constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the first crosstalk area when a signal indicating that the viewer is positioned in the first crosstalk area is obtained, and constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the second crosstalk area when a signal indicating that the viewer is positioned in the second crosstalk area is obtained.
Claim 42
Dependent Claim
417 words
A head tracking stereoscopic display comprising: a head position detecting device comprising light receiving means constructed by arranging a first light receiving device for a stereoscopic area, a second light receiving device for a pseudostereoscopic area, a third light receiving device for a first crosstalk area, and a fourth light receiving device for a second crosstalk area in the horizontal direction, lens means for respectively introducing light reflected from the face of a viewer positioned in the stereoscopic area, light reflected from the face of the viewer positioned in the pseudostereoscopic area, light reflected from the face of the viewer positioned in the first crosstalk area, and light reflected from the face of the viewer positioned in the second crosstalk area into said first light receiving device, said second light receiving device, said third light receiving device, and said fourth light receiving device, and judgment means for comparing the amount of the light detected in said first light receiving device, the amount of the light detected in said second light receiving device, the amount of the light detected in said third light receiving device, and the amount of the light detected in said fourth light receiving device, to judge which of the stereoscopic area, the pseudostereoscopic area, the first crosstalk area, and the second crosstalk area is an area where the viewer is positioned, the head tracking stereoscopic display being constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the stereoscopic area when a signal indicating that the viewer is positioned in the stereoscopic area is obtained in said head position detecting device, constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the pseudostereoscopic area when a signal indicating that the viewer is positioned in the pseudostereoscopic area is obtained, constructed to respectively introduce a right eye image and a left eye image to the right eye and the left eye of the viewer positioned in the first crosstalk area when a signal indicating that the viewer is positioned in the first crosstalk area is obtained, and constructed to respectively introduce the right eye image and the left eye image to the right eye and the left eye of the viewer positioned in the second crosstalk area when a signal indicating that the viewer is positioned in the second crosstalk area is obtained.
References Cited (Backward Citations)
US4959641A
Cited
US4987487A
Cited
US5949583A
Cited
WO1994006249A1
Cited
US5349379A
Cited
US5410345A
Cited
US5428366A
Cited
US5546120A
Cited
EP0602934A2
Cited
US5726800A
Cited
US5757522A
Cited
US5581378A
Cited
US5712732A
Cited
US5457574A
Cited
US5493427A
Cited
EP0721131A2
Cited
US5945965A
Cited
US5866675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-10-15 | 2005-04-16 | 2005-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-15 | 2009-04-16 | 2009-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-15 | 2013-04-16 | 2013-10-16 | $7700.00 | Window Closed / Lapsed |