EP0709816A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Display apparatus and its control method
Assignee: Canon Inc
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Filing: 1995-10-26
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Granted: —
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Expires: 2015-10-26
Abstract
Abstract In a head-mount display apparatus with which an observer can observe images displayed on display units arranged in correspondence with the right and left eyes of the observer while wearing the apparatus on his or her head, first and second image display ranges are defined on each display unit. An angular velocity detection unit detects the displacement of the head of the observer, and changes the positions of the first and second image display ranges on the display units relative to each other on the basis of the detected displacement information of the head. As a result, a natural display corresponding to the movement of the head can be attained in real time even under the condition of a limited image memory capacity.
Inventors
- 👤 Nobuo Fukushima
- 👤 Yasuyuki Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:43
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/30; G09B9/307; G02; G02B; G02B27/00; G02B27/01; G02B27/017; G02B27/0101; G02B2027/0132
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
112 words
A display apparatus having a display unit which displays an image that can be observed by an observer while being mounted on a head of the observer, characterized by comprising: display means (100L, 100R) which defines a first image display range and a second image display range larger than the first image display range on the display unit, and displays an image to be observed on the first image display range; detection means (300) for detecting a displacement of said display apparatus; and first control means (200) for changing a relative positional relationship between the first and second image display ranges on the basis of the displacement detected by said detection means.
Claim 2
Dependent Claim
55 words
The apparatus according to claim 1, further comprising: discrimination means (200) for discriminating whether an amount of the displacement detected by said detection means exceeds a predetermined amount; and second control means (200) for controlling based on a discrimination result of said discrimination means whether or not control of said first control means is executed.
Claim 3
Dependent Claim
44 words
The apparatus according to claim 2, wherein said discrimination means decomposes the amount of the displacement detected by said detection means into displacement amounts in units of direction components, and discriminates if the displacement amounts in units of direction components exceed a predetermined amount.
Claim 4
Dependent Claim
34 words
The apparatus according to claim 1, wherein said first control means moves the first image display range within the second image display range on the basis of the displacement detected by said detection means.
Claim 5
Dependent Claim
40 words
The apparatus according to claim 4, wherein a moving direction of the first image display range in the second image display range by said first control means is opposite to a direction of the displacement detected by said detection means.
Claim 6
Dependent Claim
34 words
The apparatus according to claim 1, wherein said first control means performs enlargement/reduction of the first display range and an image displayed thereon on the basis of the displacement detected by said detection means.
Claim 7
Dependent Claim
74 words
The apparatus according to claim 1, wherein said first control means comprises a plurality of display changing means, each of which changes a display state on the first image display range in accordance with corresponding prescribed contents on the basis of the displacement detected by said detection means, and said first control means changes the display state on the first image display range using at least one of said plurality of display changing means.
Claim 8
Dependent Claim
46 words
The apparatus according to claim 7, wherein each of said plurality of display changing means moves the first image display range in one or a plurality of directions or enlarges/reduces the first image display range on the basis of the displacement detected by said detection means.
Claim 9
Dependent Claim
25 words
The apparatus according to claim 7, further comprising setting means for selecting one of said plurality of display changing means, which is to be used.
Claim 10
Dependent Claim
68 words
The apparatus according to claim 7, further comprising: detection means for detecting use information indicating one of said plurality of display changing means, which is to be used from a video signal to be displayed by said display means; and setting means for setting the display changing means to be used upon display of an image based on the video signal on the basis of the use information.
Claim 11
Dependent Claim
29 words
The apparatus according to claim 8, wherein said detection means acquires the use information on the basis of a signal superposed on a blanking period of the video signal.
Claim 12
Dependent Claim
20 words
The apparatus according to claim 1, wherein the image displayed in the first image display range is a moving picture.
Claim 13
Dependent Claim
105 words
A display apparatus for displaying an image based on an input video signal on display units for right and left eyes of an observer, characterized by comprising: setting means (111) for setting a magnification factor used for enlarging/reducing the image; enlargement/reduction means (105L, 105R) for enlarging/reducing the image in accordance with the magnification factor set by said setting means; and display means (130, 106L, 106R) for displaying the image enlarged/reduced by said enlargement/reduction means on each of the display units for the right and left eyes to maintain a relative positional relationship between the image and a display range of each of the display units.
Claim 14
Dependent Claim
33 words
The apparatus according to claim 13, wherein said setting means detects magnification information indicating the magnification factor from the video signal, and sets the magnification factor on the basis of the magnification information.
Claim 15
Dependent Claim
29 words
The apparatus according to claim 14, wherein said detection means acquires the magnification information on the basis of a signal superposed on a blanking period of the video signal.
Claim 16
Dependent Claim
18 words
The apparatus according to claim 14, wherein the image based on the video signal is a stereoscopic image.
Claim 17
Dependent Claim
20 words
The apparatus according to claim 13, wherein said enlargement/reduction means enlarges/reduces the image by electrically processing the input video signal.
Claim 18
Dependent Claim
19 words
The apparatus according to claim 17, wherein said enlargement/reduction means performs interpolation or thin-out processing for the video signal.
Claim 19
Dependent Claim
123 words
A display apparatus for displaying an image based on an input video signal on display units for right and left eyes of an observer, characterized by comprising: first setting means (111) for setting a magnification factor used for enlarging/reducing the image; enlargement/reduction means (105L, 105R) for enlarging/reducing the image in accordance with the magnification factor set by said first setting means; second setting means (114L, 114R) for setting display positions, on the display units for the right and left eyes, of the image enlarged/reduced by said enlargement/reduction means; and display means (106L, 106R, 130) for displaying the image enlarged/reduced by said enlargement/reduction means at the display positions set by said second setting means on the display units for the right and left eyes.
Claim 20
Dependent Claim
34 words
The apparatus according to claim 19, wherein said second setting means detects position information indicating the display positions from the video signal, and sets the display positions on the basis of the position information.
Claim 21
Dependent Claim
29 words
The apparatus according to claim 20, wherein said detection means acquires the position information on the basis of a signal superposed on a blanking period of the video signal.
Claim 22
Dependent Claim
18 words
The apparatus according to claim 19, wherein the image based on the video signal is a stereoscopic image.
Claim 23
Dependent Claim
20 words
The apparatus according to claim 19, wherein said enlargement/reduction means enlarges/reduces the image by electrically processing the input video signal.
Claim 24
Dependent Claim
19 words
The apparatus according to claim 23, wherein said enlargement/reduction means performs interpolation or thin-out processing for the video signal.
Claim 25
Dependent Claim
118 words
A control method of a display apparatus having a display unit which displays an image that can be observed by an observer while being mounted on a head of the observer, characterized by comprising: the display step (S107) of defining a first image display range and a second image display range larger than the first image display range on the display unit, and displaying an image to be observed on the first image display range; the detection step (S103) of detecting a displacement of the display apparatus; and the first control step (S105) of changing a relative positional relationship between the first and second image display ranges on the basis of the displacement detected in the detection step.
Claim 26
Dependent Claim
55 words
The method according to claim 25, further comprising: the discrimination step (S104) of discriminating whether an amount of the displacement detected in the detection step exceeds a predetermined amount; and the second control step (S104) of controlling based on a discrimination result in the discrimination step whether or not the first control step is executed.
Claim 27
Dependent Claim
48 words
The method according to claim 26, wherein the discrimination step includes the step of decomposing the amount of the displacement detected in the detection step into displacement amounts in units of direction components, and discriminating if the displacement amounts in units of direction components exceed a predetermined amount.
Claim 28
Dependent Claim
38 words
The method according to claim 25, wherein the first control step includes the step of moving the first image display range within the second image display range on the basis of the displacement detected in the detection step.
Claim 29
Dependent Claim
40 words
The method according to claim 28, wherein a moving direction of the first image display range in the second image display range in the first control step is opposite to a direction of the displacement detected in the detection step.
Claim 30
Dependent Claim
38 words
The method according to claim 25, wherein the first control step includes the step of performing enlargement/reduction of the first display range and an image displayed thereon on the basis of the displacement detected in the detection step.
Claim 31
Dependent Claim
78 words
The method according to claim 25, wherein the first control step comprises a plurality of display changing steps, each of which changes a display state on the first image display range in accordance with corresponding prescribed contents on the basis of the displacement detected in the detection step, and the first control step includes the step of changing the display state on the first image display range using at least one of the plurality of display changing steps.
Claim 32
Dependent Claim
50 words
The method according to claim 31, wherein each of the plurality of display changing steps includes the step of moving the first image display range in one or a plurality of directions or enlarging/reducing the first image display range on the basis of the displacement detected in the detection step.
Claim 33
Dependent Claim
26 words
The method according to claim 31, further comprising the setting step of selecting one of the plurality of display changing steps, which is to be used.
Claim 34
Dependent Claim
70 words
The method according to claim 31, further comprising: the detection step of detecting use information indicating one of the plurality of display changing steps, which is to be used from a video signal to be displayed in the display step; and the setting step of setting the display changing step to be used upon display of an image based on the video signal on the basis of the use information.
Claim 35
Dependent Claim
33 words
The method according to claim 32, wherein the detection step includes the step of acquiring the use information on the basis of a signal superposed on a blanking period of the video signal.
Claim 36
Dependent Claim
20 words
The method according to claim 25, wherein the image displayed in the first image display range is a moving picture.
Claim 37
Dependent Claim
112 words
A control method of a display apparatus for displaying an image based on an input video signal on display units for right and left eyes of an observer, characterized by comprising: the setting step (111) of setting a magnification factor used for enlarging/reducing the image; the enlargement/reduction step (105L, 105R) of enlarging/reducing the image in accordance with the magnification factor set in the setting step; and the display step (130, 106L, 106R) of displaying the image enlarged/reduced in the enlargement/reduction step on each of the display units for the right and left eyes to maintain a relative positional relationship between the image and a display range of each of the display units.
Claim 38
Dependent Claim
37 words
The method according to claim 37, wherein the setting step includes the step of detecting magnification information indicating the magnification factor from the video signal, and setting the magnification factor on the basis of the magnification information.
Claim 39
Dependent Claim
33 words
The method according to claim 38, wherein the detection step includes the step of acquiring the magnification information on the basis of a signal superposed on a blanking period of the video signal.
Claim 40
Dependent Claim
18 words
The method according to claim 38, wherein the image based on the video signal is a stereoscopic image.
Claim 41
Dependent Claim
20 words
The method according to claim 37, wherein said enlargement/reduction step enlarges/reduces the image by electrically processing the input video signal.
Claim 42
Dependent Claim
19 words
The method according to claim 41, wherein said enlargement/reduction step performs interpolation or thin-out processing for the video signal.
Claim 43
Dependent Claim
131 words
A control method of a display apparatus for displaying an image based on an input video signal on display units for right and left eyes of an observer, characterized by comprising: the first setting step (111) of setting a magnification factor used for enlarging/reducing the image; the enlargement/reduction step (105L, 105R) of enlarging/reducing the image in accordance with the magnification factor set in the first setting step; the second setting step (114L, 114R) of setting display positions, on the display units for the right and left eyes, of the image enlarged/reduced in the enlargement/reduction step; and the display step (106L, 106R, 130) of displaying the image enlarged/reduced in the enlargement/reduction step at the display positions set in the second setting step on the display units for the right and left eyes.
Claim 44
Dependent Claim
38 words
The method according to claim 43, wherein the second setting step includes the step of detecting position information indicating the display positions from the video signal, and setting the display positions on the basis of the position information.
Claim 45
Dependent Claim
33 words
The method according to claim 44, wherein the detection step includes the step of acquiring the position information on the basis of a signal superposed on a blanking period of the video signal.
Claim 46
Dependent Claim
18 words
The method according to claim 43, wherein the image based on the video signal is a stereoscopic image.
Claim 47
Dependent Claim
20 words
The method according to claim 43, wherein said enlargement/reduction step enlarges/reduces the image by electrically processing the input video signal.
Claim 48
Dependent Claim
19 words
The apparatus according to claim 47, wherein said enlargement/reduction step performs interpolation or thin-out processing for the video signal.
References Cited (Backward Citations)
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