Patent attributes
This invention relates to an optical imaging device that includes an elongate housing. An infrared sensor arrangement is arranged in the housing and is configured to sense information printed on a page with infrared ink. The device also includes a radio frequency transceiver arranged in the housing and operatively connected to the sensor arrangement for communicating said information wirelessly. A pair of orthogonal accelerometers mounted in the housing in a plane normal to an elongate axis of the housing. The accelerometers enable the device to sense direction and speed of motion without reference to a location on the page. Also included is a controller circuit for controlling operation of the sensor arrangement, the transceiver, and the accelerometers.
