Presentation system using laser pointer

Details Presentation system using laser pointer Presentation system using laser pointer

2005-06-28

2005-06-28

Mathews, Alan A. (Department: 2851)

Optics: image projectors

Pointer

C345S158000

Reexamination Certificate

active

06910778

ABSTRACT:
A presentation system includes a screen device, a projecting device that projects a visible image onto the screen device, and a laser pointer operated by a user, that projects a laser beam onto the screen device. The laser pointer includes an infrared light emitting section and a laser beam emitting section. A projected image of the infrared light projected onto the screen is sensed by an infrared light sensing section. Movement direction and movement distance of the projected image and button click signal are converted into mouse data usable by computer. An image based on the mouse data from the computer is projected from a projector to the screen. A human body sensor which senses heat of human body existing in a projected direction of the laser beam is settled to supply a safe presentation system by controlling the projection of the laser beam in case this sensor is operated.

REFERENCES:
patent: 6417840 (2002-07-01), Daniels
patent: 6460999 (2002-10-01), Suzuki
patent: 6698897 (2004-03-01), Hamana et al.
patent: 6766066 (2004-07-01), Kitazawa
patent: B2 2622620 (1997-04-01), None
patent: A 11-85395 (1999-03-01), None
patent: A 11-143636 (1999-05-01), None
patent: B2 2977559 (1999-09-01), None

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