Patent ID: RE43633

Claim:
A system for linking source material to reference material for display comprising: a source material image including a plurality of discrete pieces having links to external reference materials comprising any of textual, audio, video, and picture information, said source material image stored in an electronic database; means for determining an address on said electronic database for the beginning position of said source material image; means for cutting said source material image into said discrete pieces; means for determining an address on said electronic database for a start point and an end point of said discrete pieces of said image based upon said beginning position of said source material image; means for recording said start and said end point addresses in a look-up table; means for selecting a discrete portion of said source material image; means for determining the address on said electronic database of said selected discrete portion; means for converting said address of said selected discrete portion to an offset value from said beginning position address of said source material image; means for comparing said offset value with said recorded start and end point addresses of said discrete pieces in said look-up table; means for selecting an external reference that corresponds to said look-up table start and end point addresses; and means for reproducing said external reference.