The present invention relates to a jotting implement that infers
hand-jotted information from viewing a jotting surface and environmental
landmarks. The hand-jotted information is any information marked on the
jotting surface as a result of writing, jotting, drawing, sketching or
otherwise operating on the jotting surface as well as hand-generated
information produced by moving the implement in the air with respect to
the jotting surface. The jotting implement has a nib for jotting and an
arrangement for determining when the nib is jotting on the jotting
surface. Further, the implement has an optical unit for viewing an
environmental landmark and the jotting surface. The implement has a
processing unit for receiving optical data of the environmental landmark
and the jotting surface from the optical unit and determining from the
optical data the physical coordinates of the nib with respect to the
jotting surface. The environmental landmark is preferably made up several
beacons that emit electromagnetic radiation and are affixed to a host
structure.