Enhanced Presentation Capabilities Using a Pointer Implement
First Claim
Patent Images
1. A presentation system comprising:
- a screen to display a display image;
a projector to receive a system image on a first path and project said system image on said screen;
a pointer implement to produce a beam of light, said beam of light forming a beam spot on a location of said screen when said pointer implement is pointed to said screen by said user, wherein said system image and said beam spot together forming said display image; and
a digital processing system to provide said system image to said projector and to examine said display image to determine said location of said beam spot on said screen.
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Abstract
Providing enhanced presentation capabilities using a pointer implement. In an embodiment, a user operates a key on a pointer implement to cause the pointer implement to capture the display image on a screen and send the captured image frame to a digital processing system. The digital processing system examines the image frame to determine the location of a beam spot caused by the pointer implement, which can be used as a basis for several user features. For example, a user may cause the digital processing system to draw a line on the screen or use the pointer implement as a mouse as well.
27 Citations
24 Claims
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1. A presentation system comprising:
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a screen to display a display image; a projector to receive a system image on a first path and project said system image on said screen; a pointer implement to produce a beam of light, said beam of light forming a beam spot on a location of said screen when said pointer implement is pointed to said screen by said user, wherein said system image and said beam spot together forming said display image; and a digital processing system to provide said system image to said projector and to examine said display image to determine said location of said beam spot on said screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A pointer implement comprising:
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a light source to generate a beam of light in a direction; a camera to capture an image frame in said direction; and a communication block to transfer said image frame on a path to an external system. - View Dependent Claims (15, 16, 17, 18)
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19. A machine readable medium storing one or more sequences of instructions for causing a system to provide enhanced presentation features to a user using a pointer implement, wherein execution of said one or more sequences of instructions by one or more processors contained in said system causes said system to perform the actions of:
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receiving an image frame representing a display image present on a screen, said image frame containing a beam spot; and examining said image frame to determine the location of said beam spot in said image frame, wherein said beam spot is formed on said screen by a beam of light produced by said pointer implement when said pointer implement is pointed to said screen by said user. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification