EP0606162B1
Expired / Lapsed
EP
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Image display system with pixel mosaic pattern
Assignee: Sony Corp
•
Filing: 1994-01-06
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Granted: 1998-11-11
•
Expires: 2014-01-06
Abstract
No abstract record available.
Inventors
- 👤 Yoshiki Sony Corporation Shirochi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:25
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/01486; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133504; G09; G09G; G09G3/00; G09G3/001; G09G3/007; G09G3/20; G09G3/34; G09G3/36; G09G5/00; H; H04; H04N; H04N23/00; H04N23/60; H04N23/68; H04N23/682; H04N23/685; H04N23/686; H04N23/687; H04N3/00; H04N3/10; H04N3/12; H04N3/127; H04N5/00; H04N5/74; H04N5/7416; H04N5/7441; H04N5/76; H04N5/765; H04N5/77; H04N5/91; H04N5/92; H04N5/9201; H04N5/9206; H04N9/00; H04N9/12; H04N9/30; G02F1/13363; G02F1/1347; G02F1/13471
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
236 words
A method of increasing resolution of an image
displayed to a viewer (1) on an image display system (10)
having a matrix of pixels arranged in horizontal rows and
vertical columns and selectively energizable to display an
image composed of a plurality of pixel patterns in alternate
fields, comprising the steps of: providing an optical path changer (30;50) formed of a
light refractive member; positioning the optical path changer (30;50) between the
image display system (10) and the viewer (1) so that the viewer
views the image through the optical path changer which is for
shifting the optical path between the display system and the
viewer to optically shift a pixel pattern; operating said optical path changer (30;50) to shift said
optical path by refraction characterised by displaying the pixel pattern on said image display system
(10) to be shifted in every field in synchronism with the
shifting of said optical path by said optical path changer by
shifting a horizontal clock signal of said image display out of
phase with a horizontal synchronizing signal of image
information supplied thereto in conformity with sampled
positions on the displayed image when the optical path is
shifted horizontally, and shifting a vertical clock signal of said image display
system out of phase with a vertical synchronizing signal of
image information supplied thereto in conformity with sampled
positions on the displayed image when the optical path is
shifted vertically.
Claim 2
Dependent Claim
37 words
A method according to claim 1, wherein said step of
operating the optical path changer comprises the step of moving
said light refractive member (50) into and out of said optical
path thereby shifting the optical path.
Claim 3
Dependent Claim
47 words
A method according to claim 1, wherein said light
refractive member includes regions having different refractive
indices, and said step of operating the optical path changer
comprises the step of moving one of said regions into said
optical path in alternate fields thereby shifting the optical
path.
Claim 4
Dependent Claim
50 words
A method according to claim 1, wherein said optical
path changer comprises an active prism (100) for passing light
from said image display system (10) therethrough, said step of
operating the optical path changer comprising the step of
actuating said active prism in every field thereby shifting the
optical path.
Claim 5
Independent Claim
100 words
A method according to any one of the preceding
claims wherein said pixels are capable of continuously
displaying the image until a next portion of image information
of which a next field is composed is supplied to the pixels;
and providing an optical path changer; positioning the optical path changer between an image
display system and the viewer for selectively shifting an
optical path between the image display system and the viewer
depending on the field, said shifting being said optical path changer is operated to shift said
optical path in synchronism with vertical scanning of said
image display system.
Claim 6
Independent Claim
43 words
A method according to any one of the preceding
claims, wherein said optical path is shifted in one direction
by ½ of the pitch of the pixels and in a transverse direction
by ¼ of the pitch of pixels of the same color.
Claim 7
Dependent Claim
237 words
An image display system comprising: an image display device (10) receiving image information
(VI) and having a matrix of pixels (R,G,B) arranged in
horizontal rows and vertical columns and selectively
energizable in response to a horizontal clock signal and a
vertical clock signal to display an image composed of a
plurality of pixel patterns in alternate fields; an optical path changer (30;50) formed of a light
refractive member disposed between said image display device
(10) and a viewer (1) so that the viewer views a displayed
image on said image display device through the optical path
changer and for shifting the optical path between said image
display device and the viewer and to optically shift pixel
patterns characterised by shifting means (24) for shifting pixel patterns displayed
on said image display device in time relation to the change of
the optical path by said optical path changer by shifting said
horizontal clock signal in every field out of phase with a
horizontal synchronizing signal of the image information
supplied to said image display device in conformity with
sampled positions on the displayed image when the optical path
is shifted horizontally by said optical path changer and/or
shifting said vertical clock signal in every field out of phase
with a vertical synchronizing signal of the image information
in conformity with sampled positions on the displayed image
when the optical path is shifted vertically by said optical
path changer.
Claim 8
Dependent Claim
111 words
An image display system according to claim 7,
wherein said optical path changer (50;500) comprises a circular
member (52) having a rotatable shaft located at a central axis
thereof and including circumferentially alternate regions (51,
54; 511-517, 540) for deflecting the optical path by respective
different quantities, said circular member being disposed in
the optical bath between said image display device and the
viewer, whereby said rotatable shaft is rotated in synchronism
with vertical scanning of said image display device (10) to
cause said circumferentially alternate regions of the circular
member to move alternately into said optical path while each
field of image information is supplied to said image display
device.
Claim 9
Dependent Claim
69 words
An image display system according to claim 7,
wherein said optical path changer comprises a polarization
plane rotator (71) and a birefringent plate (72), said
polarization plane rotator and said birefringent plate being
arranged between said image display device (10) and the viewer
(1) such that light from said image display device passes
successively through said polarization plane rotator (71) and
said birefringent plate (72) in the order named.
Claim 10
Dependent Claim
72 words
An image display system according to claim 7, 8 or
9, wherein said image display device comprises: horizontal scanning means (16) for successively scanning
the horizontal rows of pixels with the horizontal clock signal
(HCK); vertical scanning means (13) for successively scanning
the vertical columns of pixels with the vertical clock signal
(VCK); generating means (24) for generating said horizontal
clock signal; and generating means (24) for generating said vertical clock
signal.
References Cited (Backward Citations)
No citation records indexed.
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