Patent ID: 6533174
Filing Date: 2003-03-18
Classification: G06K

Abstract:
A system for reading and writing alphanumeric characters of a size readable by the unaided human eye and located on a paper medium, the system comprising;a light source for producing a light beam; reading means coupled to said light source for directing said light beam at said paper medium so as to scan along a scan direction first alphanumeric characters disposed on a first portion of said paper medium, detecting at least a porlion of a light of variable intensity reflected off the first characters, and generating an electrical signal indicative of the detected light intensity, and writing means coupled to said light source for directing said light beam at said paper medium in a pattern on a second portion of said medium so as to write second characters on said paper medium, wherein said paper medium has a light and/or heat sensitive surface coating on said second portion of said paper medium so as to form alphanumeric characters when said light beam is directed thereto.