Display for mosaic pattern of pixel information with optical pixel shift for high resolution
First Claim
1. A method of increasing resolution of an image displayed to a viewer on an image display system 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 formed of a light refractive member;
positioning the optical path changer between the image display system and the viewer so that the viewer views the image through the optical path changer and for shifting the optical path between the display system and the viewer to optically shift a pixel pattern;
operating said optical path changer to shift said optical path by refraction; and
displaying the pixel pattern on said image display system 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 system 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, andshifting 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.
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Abstract
The apparent resolution of an image displayed on an image display system is increased without increasing the number of actual pixels which are arranged in horizontal rows and vertical columns and selectively energizable to display an image composed of a plurality of pixel patterns in alternate fields. An optical path changer is positioned between the image display system and a viewer or screen for shifting an optical path therebetween to optically shift the pixel pattern. The optical path changer is operated to shift the optical path, and the pixel pattern to be optically shifted is displayed on the image display system in every field in synchronism with the shifting of the optical path by the optical path changer.
253 Citations
10 Claims
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1. A method of increasing resolution of an image displayed to a viewer on an image display system 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:
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providing an optical path changer formed of a light refractive member; positioning the optical path changer between the image display system and the viewer so that the viewer views the image through the optical path changer and for shifting the optical path between the display system and the viewer to optically shift a pixel pattern; operating said optical path changer to shift said optical path by refraction; and displaying the pixel pattern on said image display system 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 system 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. - View Dependent Claims (2, 3, 4, 5)
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6. An image display system comprising:
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an image display device receiving image information and having a matrix of pixels 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 formed of a light refractive member disposed between said image display device and a viewer 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; and shifting means 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. - View Dependent Claims (7, 8, 9)
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10. A method of increasing resolution of an image displayed to a viewer on an image display system 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, said pixels being 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, comprising the steps of:
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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 in synchronism with vertical scanning of said image display system; operating said optical path changer to shift said optical path; and displaying the pixel pattern to be electrically shifted on said image display system 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 system 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.
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Specification