Apparatus for displaying drawings
First Claim
1. An apparatus for displaying a drawing, said apparatus comprising:
- a display member having a viewing surface;
support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly;
an electro-optic medium having first and second display states differing in at least one optical property, said medium being chanced from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface;
a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and
drive means for moving said writing head relative to said electro-optic medium,wherein said display member has the form of a hollow box, said electro-optic medium is disposed on an internal surface of said box, the portion of said box adjacent said electro-optic medium being substantially transparent so as to enable an observer to see said electro-optic medium through said viewing surface, and said writing head comprises an elongate member arranged to move within said box so as to write on said electro-optic medium.
1 Assignment
0 Petitions
Accused Products
Abstract
A first apparatus for displaying drawings comprises a housing having an aperture, a drawing sheet comprising electro-optic material movable through the aperture between closed and open positions, and a writing device for writing on the sheet as it moved between its closed and open positions. A second apparatus comprises a display member having a viewing surface, support means for supporting this display member above a floor, an electro-optic medium disposed on the display member, and a movable writing head for writing on the electro-optic medium. Another display comprise an optic medium with two display states visible through a viewing surface. A touch screen is disposed on the opposed side of the optic medium from the viewing surface, and the optic medium is deformable such that pressure applied to the viewing surface will be transmitted to the touch screen.
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Citations
14 Claims
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1. An apparatus for displaying a drawing, said apparatus comprising:
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a display member having a viewing surface; support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly; an electro-optic medium having first and second display states differing in at least one optical property, said medium being chanced from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface; a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and drive means for moving said writing head relative to said electro-optic medium, wherein said display member has the form of a hollow box, said electro-optic medium is disposed on an internal surface of said box, the portion of said box adjacent said electro-optic medium being substantially transparent so as to enable an observer to see said electro-optic medium through said viewing surface, and said writing head comprises an elongate member arranged to move within said box so as to write on said electro-optic medium.
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2. An apparatus for displaying a drawing, said apparatus comprising:
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a display member having a viewing surface;
support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly;an electro-optic medium having first and second display states differing in at least one optical property, said medium being changed from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface; a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and drive means for moving said writing head relative to said electro-optic medium, wherein said display member has the form of a hollow box, said electro-optic medium is disposed on an internal surface of said box, the portion of said box adjacent said electro-optic medium being substantially transparent so as to enable an observer to see said electro-optic medium through said viewing surface, said writing head comprises a stylus member, and said drive means are arranged to move said writing head in two dimensions over said electro-optic medium.
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3. An apparatus for displaying a drawing, said apparatus comprising:
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a display member having a viewing surface; support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly; an electro-optic medium having first and second display states differing in at least one optical property, said medium being changed from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface; a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and drive means for moving said writing head relative to said electro-optic medium, wherein said display member has the form of a hollow box, said electro-optic medium is disposed on a movable member within said box, said writing head is disposed at a fixed location within said box, and said drive means is arranged to drive said movable member past said fixed writing head.
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4. An apparatus for displaying a drawing, said apparatus comprising:
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a display member having a viewing surface; support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly; an electro-optic medium having first and second display states differing in at least one optical property, said medium being changed from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface; a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and drive means for moving said writing head relative to said electro-optic medium, the apparatus further comprising data storage means for storing data representing a plurality of drawings, and data selection means for selecting at least one of said plurality of drawings for writing by said writing head on said electro-optic medium.
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5. An apparatus for displaying a drawing, said apparatus comprising:
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a display member having a viewing surface; support means for supporting said display member above a horizontal floor with said viewing surface facing upwardly; an electro-optic medium having first and second display states differing in color perceptible to the human eye, said medium being changed from its first to its second display state by application of an electric field to said medium, said electro-optic medium being disposed on said display member so as to be visible to an observer viewing said viewing surface; a writing head arranged to write on said electro-optic medium an image visible to the observer viewing said viewing surface; and drive means for moving said writing head relative to said electro-optic medium. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification