초록 ▼

The precision infrared position detector apparatus uses an information display device that has a substantially cylindrical shaped screen to limit curvature of the screen to a single dimension. In addition, to compensate for this curvature, a flexible printed circuit board is used to align the row of

The precision infrared position detector apparatus uses an information display device that has a substantially cylindrical shaped screen to limit curvature of the screen to a single dimension. In addition, to compensate for this curvature, a flexible printed circuit board is used to align the row of infrared light sources and detectors along the same curvature as the screen of the information display device. A first flexible printed circuit board is equipped with a single row of infrared light sources while a second flexible printed circuit board is equipped with a signal row of corresponding infrared light detectors. A frame member is used to bend the flexible printed circuit board into a substantially cylindrical shape that matches the curvature of the screen of the information display device. In this manner, the first and second flexible printed circuit boards are placed at opposite ends of the rectangular shaped screen of the information display device to thereby transmit a plurality of parallel beams of infrared light, each of which is a predetermined distance above the screen of the information display device even though the screen of the information display device curves in the shape of a cylinder.

대표청구항 ▼

Infrared touch control apparatus for accurately registering the position of a user activated stylus comprising: means for displaying a plurality of indicia, wherein said display means has a screen that is substantially in the shape of a segment of a cylinder, including first and second spaced apart

Infrared touch control apparatus for accurately registering the position of a user activated stylus comprising: means for displaying a plurality of indicia, wherein said display means has a screen that is substantially in the shape of a segment of a cylinder, including first and second spaced apart parallel curved sides and third and fourth spaced apart parallel straight sides, such that said first, second, third, fourth sides form a substantially rectangular shaped screen; a plurality of infrared light source means disposed in a row along with first side of said screen of said displaying means for emitting a plurality of parallel infrared light beams along said screen of said displaying means a predetermined distance above said screen of said displaying means; flexible printed circuit board means connected to said plurality of infrared light source means for positioning said plurality of infrared light source means to conform to the curvature of said screen of said displaying means such that each of said plurality of infrared light source means is a predetermined distance above said screen of said displaying means; a like plurality of infrared light detector means disposed in a row along said second side of said screen of said displaying means in spaced apart parallel mating relationship to said plurality of infrared light source means, each of said infrared light detector means for receiving a corresponding one of said parallel infrared light beams; and flexible printed circuit board means connected to said plurality of infrared light detector means for positioning said plurality of infrared light detector means along said screen of said displaying means a predetermined distance above said screen of said displaying means.