Scan type display device with image scanning function
First Claim
1. A scan type display device comprising a device body carrying a light emitting cell array including a plurality of light emitting cells arrange in a linear alignment for scanning an aerial plane to display a desired image by utilizing a residual image effect, said light emitting cells being selectively illuminated according to image data stored in a memory and in synchronism with motion of said device body, said display device further comprising:
- light receiving means including at least one light receiving element provided on said device body, said light receiving element being positioned to receive a reflected light from a to-be-sampled image displayed on an image carrying medium, when such image is placed in proximity and in opposition to said light emitting cell array and is illuminated by said light emitting cells;
means for illuminating each individual light emitting cell of said light emitting array in a predetermined order for sampling line image data of a single display line of such to-be-sampled image; and
means for detecting shifting of such to-be-sampled image so as to terminate sampling of line image data of a previous display line of such to-be-sampled image and to sample line image data of a next display line of such image.
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Accused Products
Abstract
A scan type display device has a device body carrying a light emitting cell array, in which a plurality of light emitting cell arrays are aligned on a line, for scanning aerial plane to display a desired image by residual image effect. The light emitting cells are selectively illuminated according to an image data stored in a memory in synchronism with motion of the device body. The display device also has at least one light receiving element provided on the device body in a positional relationship with the light emitting cell array in such a manner that, when an image carrying medium containing an image to be sampled is placed in close proximity to the light emitting cell array in opposition and the light emitting cells in the light emitting cell array are selectively illuminated, a reflected light from the image carrying medium is received by the light receiving element for sampling the image on the image carrying medium. When an image carrying medium is placed in close proximity to the light emitting cell array in opposition, each individual light emitting cell is illuminated in order for locally irradiating light on the image carrying medium for reading output the light receiving element for sampling image data of a linear image fraction, and by relatively shifting the image carrying medium and the light emitting array for repeating sampling of image data for other linear image fraction to establish an image data of the two-dimensional image.
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Citations
14 Claims
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1. A scan type display device comprising a device body carrying a light emitting cell array including a plurality of light emitting cells arrange in a linear alignment for scanning an aerial plane to display a desired image by utilizing a residual image effect, said light emitting cells being selectively illuminated according to image data stored in a memory and in synchronism with motion of said device body, said display device further comprising:
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light receiving means including at least one light receiving element provided on said device body, said light receiving element being positioned to receive a reflected light from a to-be-sampled image displayed on an image carrying medium, when such image is placed in proximity and in opposition to said light emitting cell array and is illuminated by said light emitting cells; means for illuminating each individual light emitting cell of said light emitting array in a predetermined order for sampling line image data of a single display line of such to-be-sampled image; and means for detecting shifting of such to-be-sampled image so as to terminate sampling of line image data of a previous display line of such to-be-sampled image and to sample line image data of a next display line of such image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An aerial display device comprising:
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a substantially straight elongated bar form device body; a light emitting cell array provided on said device body and having a plurality of light emitting cells arranged in alignment; at least one reflected light receiving element provided on said device body in the vicinity of said light emitting cell array; a motion sensor detecting physical motion of said device body for generating a motion signal indicative thereof; a controller including a memory storing an image data to be aerially displayed and operable in a display mode for selectively driving said light emitting cells in a display pattern corresponding to a fractional line pattern of the image to be displayed and varying the display pattern in synchronism with motion of said device body, and in a image scanning mode for scanning fractional line pattern of an image to be sampled by driving said light emitting cell array to sequentially illuminate one of said light emitting cells in order for locally irradiating the light on a point on the fractional line pattern, sampling and holding data indicative of the image in the irradiated point and varying the fractional line pattern to scan in synchronism with relative displacement between the image to be sampled and the light emitting cell array for sampling and holding an image data of a two dimensional image.
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Specification