INTERACTIVE DISPLAY SYSTEM
First Claim
1. An interactive display system, comprising:
- a data processing unit;
a display having a screen configured to communicate with the data processing unit and to display an object image output from the data processing unit on the screen, the object image including a cursor generated by the data processing unit;
a translucent optical unit externally attached to the screen or built in the screen, the translucent optical unit being disposed in front of the screen;
a laser pointer configured to emit a laser beam onto the translucent optical unit, the laser beam having a specified wavelength in visible-light range, wherein the translucent optical unit is capable of reflecting a larger portion of the laser beam;
an image capture device having a lens and configured to communicate with the data processing unit;
an optical filter attached to the lens externally or built in the lens for allowing passage of light beam reflected from the translucent optical unit; and
wherein the image capture device acquires a sensed image retrieved from the image capture device and the data processing unit determines a position of the reflected laser beam with respect to the object image according to light intensity distribution of the sensed image, calculates a distance vector between the position of the reflected laser beam and the cursor, and moves the cursor according to the distance vector, wherein the sensed image including a part of the displayed object image of the specified wavelength and the reflected laser beam.
1 Assignment
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Accused Products
Abstract
An interactive display system including a data processing unit, a display, a laser pointer, a translucent optical device, an image capture device, and an optical filter is disclosed. The laser pointer projects a laser beam on the translucent optical device attached to or built in a screen of the display. The laser beam has a specified wavelength within a visible light spectrum. The translucent optical device reflects most of the laser beam. The image capture device acquires under the data processing unit a sensed image including a part of a displayed object image within the specified wavelength and the reflected laser beam. The data processing unit determines a position of the laser beam relative to the displayed object image in accordance with light intensity distribution of the sensed image, calculates a distance vector between the determined position and a cursor, and moves the cursor according to the distance vector.
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Citations
7 Claims
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1. An interactive display system, comprising:
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a data processing unit; a display having a screen configured to communicate with the data processing unit and to display an object image output from the data processing unit on the screen, the object image including a cursor generated by the data processing unit; a translucent optical unit externally attached to the screen or built in the screen, the translucent optical unit being disposed in front of the screen; a laser pointer configured to emit a laser beam onto the translucent optical unit, the laser beam having a specified wavelength in visible-light range, wherein the translucent optical unit is capable of reflecting a larger portion of the laser beam; an image capture device having a lens and configured to communicate with the data processing unit; an optical filter attached to the lens externally or built in the lens for allowing passage of light beam reflected from the translucent optical unit; and wherein the image capture device acquires a sensed image retrieved from the image capture device and the data processing unit determines a position of the reflected laser beam with respect to the object image according to light intensity distribution of the sensed image, calculates a distance vector between the position of the reflected laser beam and the cursor, and moves the cursor according to the distance vector, wherein the sensed image including a part of the displayed object image of the specified wavelength and the reflected laser beam. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification