Patent ID: 7131061

Claim:
An interactive document processing system, comprising: a memory for recording image data of a rendered hardcopy document; a display screen; a processing device coupled to the display screen; and an input device for recording signal data; the input device communicating the signal data to the processing device; the signal data representing at least a portion of the hardcopy document; wherein the processing device in response to receiving the signal data from the input device includes: identifying the image data in the signal data using the memory; identifying annotations in the signal data by comparing the image data with the signal data; modifying the image data recorded in the memory in accordance with the annotations; wherein the memory records an identifier associated with the image data; the identifier being rendered on the hardcopy document; the identifier and image data being recorded in the memory in response to rendering a hardcopy representation of the image data; and wherein the processing device recovers the identifier from the signal data and uses the identifier to retrieve the image data from the memory.