Two-dimensional image read/display device
AssigneeFuji Xerox Co., Ltd.
InventorsYoshiyuki Shiratsuki, Yoshinori Yamaguchi
Life of this patent
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Abstract
A two-dimensional image read/display device which is able to read and display information including two-dimensional images. A two-dimenasional image read/display device comprising a substrate, an optical sensor provided on the substrate and a light emitting unit provided to the optical sensor, wherein the optical sensor comprises a sensor area and a non-sensor area arranged alternately in a two dimensional manner, the light emitting unit comprises a light emitting area and a light transmissive area arranged alternately in a two dimensional manner, and the sensor area is disposed opposed to the light transmissive area at given distance therefrom.
Claims18
A two-dimensional image read/display device comprising an image read means having a plurality of light receiving elements arranged two-dimensionally and display means having a plurality of light emitting elements arranged two-dimensionally, said image read means and display means being disposed in stacked relation transversely to respective reference planes through said light receiving elements and said light emitting elements, said image read means or said display means having an original document carrying surface, the light emitting elements disposed on the side of the original document carrying surface with a distance from an original document to the light receiving elements equal to Z which equals ab/(a-c).ltoreq.Z.ltoreq.3ab(a+c), with a pixel pitch expressed as a (dot/nm), another distance from the original document to a light incident window expressed as b(.mu.m), and a size of the light incident window expressed as c(.mu.m), and each of said light receiving elements being disposed at a position so as to receive light generated from each of said light emitting elements and reflected by the original document.
A two dimensional image read/display device comprising:
- a substrate;
- an optical sensor means provided on said substrate;
- and
- a light emitting means provided on said optical sensor means,
- wherein said optical sensor means comprises a sensor area and a non-sensor area arranged alternately in a two dimensional manner, said light emitting means comprises a light emitting area and a light transmissive area arranged alternately in a two dimensional manner, and said sensor area is disposed in opposition to said light transmissive area at a predetermined distance therefrom.
A method of driving a two-dimensional image read/display device comprising a read means having light receiving elements arranged in a two dimensional manner and a display means disposed on said read means and having light emitting elements arranged in a two dimensional manner, said light emitting elements being respectively disposed in opposition to said light receiving elements, and said method comprising the steps of:
- emitting light from said light emitting elements by allowing a plurality of light emitting elements to emit light in such a manner that mutually adjoining light emitting elements of said display means have no simultaneous light emission;
- and reading electrical variations in said light receiving elements of said read means by reading light from the light receiving elements that are responsive to the light. emitting elements that have been allowed to emit light.
A method of driving an image read/display device comprising a read means having light receiving elements arranged in a two dimensional manner and a display means disposed on said read means and having light emitting elements arranged in a two dimensional manner, the light emitting elements being respectively disposed in opposition to the light receiving elements, said method comprising the steps of:
- emitting light from said light emitting elements by allowing a plurality of light emitting elements to emit light in such a manner that mutually adjoining lines of light emitting elements of said display means have simultaneous light emission;
- and reading electrical variations in the light receiving elements of said read means by reading light from the light receiving elements that are responsive to the light emitting elements that have been allowed to emit light.
Dependencies are inferred from the claim text.