Patent EP1001306A2 successfully refreshed from Google Patents.
EP1001306A2
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Image display apparatus
Assignee: Olympus Corp
•
Filing: 1999-11-04
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Granted: —
•
Expires: 2019-11-04
Abstract
Abstract In an image display apparatus including a delta-array display device and pixel position transition means for repeatedly shifting the respective pixel positions of the display device to each of positions at four points, the pixel shifted positions at the four points are: a first pixel position serving as standard; a second pixel position shifted with respect to the first, standard pixel position horizontally approximately by 1/2 of horizontal pixel pitch; a third pixel position shifted horizontally approximately by 3/4 or 1/4 of horizontal pixel pitch and vertically approximately by 1/2 of vertical pixel pitch; and a fourth pixel position shifted horizontally approximately by 1/4 or 3/4 of horizontal pixel pitch and vertically approximately by 1/2 of vertical pixel pitch. The image display apparatus is thereby provided as having an improved, doubled resolution in both vertical and horizontal directions by applying the 4-point pixel shift system to the delta-array display device.
Inventors
- 👤 Seiichiro c/o Intell. Prop. & Legal Dept. Tabata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:16
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/007; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1347; G02F1/13471; G09G3/001; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G02F1/1335; G02F1/13363; G02F2201/00; G02F2201/12; G02F2201/123; G02F2201/52; G09G3/2007
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
195 words
An image display apparatus comprising: a display device having pixels disposed in a delta-array; pixel position transition means for repeatedly
making a transition of pixel positions of the display
device respectively to each of positions at four points;
and image transition means for making a transition of
image signals in synchronization with the pixel position
transition means so as to display images corresponding to
said pixel positions on said display device, pixel
positions at said four points comprising: a first pixel position serving as standard; a second pixel position shifted from the standard,
first pixel position in a horizontal direction by
approximately 1/2 of horizontal pixel pitch P x ; a third pixel position shifted from said standard,
first pixel position in the horizontal direction by
approximately 3/4 or approximately 1/4 of horizontal pixel
pitch P x and in a vertical direction by approximately 1/2
of vertical pixel pitch P y ; and a fourth pixel position shifted from said standard,
first pixel position in the horizontal direction by
approximately 1/4 or approximately 3/4 of horizontal pixel
pitch P x and in the vertical direction by approximately 1/2
of vertical pixel pitch P y .
Claim 2
Dependent Claim
178 words
The image display apparatus according to claim 1,
wherein said pixel position transition means comprises: a first pixel position transition device having a
first polarization control means for switching the direction
of polarization of incident light and a first optical path
control means for switching optical path in accordance with
the direction of polarization of emergent light from the
first polarization control means; a second pixel position transition device disposed
serially to said first pixel position transition device,
having a second polarization control means for switching the
direction of polarization of incident light and a second
optical path control means for switching optical path in
accordance with the direction of polarization of emergent
light from the second polarization control means; and polarization rotating means disposed between said
first pixel position transition device and the second pixel
position transition device, for rotating the direction of
polarization of incident light through a predetermined angle
= tan -1 { (2P Y /P X ) ± n • π /2} , (n=0, 1, 2, • • • •
• ) .
Claim 3
Dependent Claim
182 words
The image display apparatus according to claim 1,
wherein said pixel position transition means comprises: a first pixel position transition device having a
first polarization control means for switching the direction
of polarization of incident light and a first optical path
control means for switching optical path in accordance with
the direction of polarization of emergent light from the
first polarization control means; a second pixel position transition device disposed
serially to said first pixel position transition device,
having a second polarization control means for switching the
direction of polarization of incident light and a second
optical path control means for switching optical path in
accordance with the direction of polarization of emergent
light from the second polarization control means; and polarization rotating means disposed between the
second polarization control means and the second optical
path control means of the second pixel position transition
device, for rotating the direction of polarization of
incident light through a predetermined angle = tan -1 { (
2P Y /P X ) ± n • π/2} , (n=0, 1, 2, • • • • •).
Claim 4
Dependent Claim
159 words
The image display apparatus according to claim 1,
wherein said pixel position transition means comprises: a first pixel position transition device having a
first polarization control means for switching the direction
of polarization of incident light and a first optical path
control means for switching optical path in accordance with
the direction of polarization of emergent light from the
first polarization control means; and a second pixel position transition device disposed
serially to said first pixel position transition device,
having a second polarization control means for switching the
direction of polarization of incident light, a second
optical path control means for switching optical path to a
horizontal or vertical direction in accordance with the
direction of polarization of emergent light from the second
polarization control means, and a third optical path control
means for switching optical path to a vertical or
horizontal direction in accordance with the direction of
polarization of emergent light from said second polarization
control means.
Claim 5
Dependent Claim
132 words
An image display apparatus comprising: a display device having methodically disposed
pixels; pixel position transition means for making a
transition of pixel positions of the display device
respectively in an oblique direction; and image transition means for making a transition of
image signals in synchronization with the pixel position
transition means so as to display images corresponding to
said pixel positions on said display device, said pixel
position transition means comprising: polarization control means for switching the
direction of polarization of incident light; a first optical path control means for switching
optical path to a horizontal direction in accordance with
the direction of polarization of incident light; and a second optical path control means for switching
optical path to a vertical direction in accordance with the
direction of polarization of incident light.
References Cited (Backward Citations)
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