Optical imaging pen with a radio antenna and orthogonal...

Details Optical imaging pen with a radio antenna and orthogonal... Optical imaging pen with a radio antenna and orthogonal...

2008-08-13

2011-10-04

Lee, Seung (Department: 2887)

Registers

Coded record sensors

Particular sensor structure

Reexamination Certificate

active

08028921

ABSTRACT:
An optical imaging pen configured to detect information encoded on a page with ink which is substantially invisible to the human eye. The pen includes a housing, an electronics chassis mounted inside the housing, and an infrared LED supported by the chassis for providing infrared radiation for projection onto the page. The pen also includes an image sensor for receiving reflected radiation from the surface, a radio frequency circuit having a radio frequency (RF) transmitter and receiver, and a radio antenna mounted within the housing, said antenna in signal communication with the radio frequency transmitter and receiver. Further included are a controller circuit for controlling operation of the LED, sensor and radio frequency circuit, as well as a pair of orthogonal accelerometers mounted in a normal plane of the pen axis, said accelerometers allowing the pen to sense motion without reference to a surface location.

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