Telegraphy – Systems – Position coordinate determination for writing
Patent
1997-01-27
1999-02-09
Shankar, Vijay
Telegraphy
Systems
Position coordinate determination for writing
178 1803, 178 1809, 345172, 345174, G08C 2100, G09G 500
Patent
active
058697896
ABSTRACT:
A digitizer system having a page recognition system and a method of using such digitizer system is disclosed. The page recognition system detects a page number pre-coded on a sheet of paper when the sheet of paper is mounted onto the digitizer system. When a sheet of paper which was previously mounted on the digitizer is re-mounted onto the digitizer, the digitizer recognizes the sheet of paper as having been previously digitized and re-loads the electronic file corresponding to the same sheet of paper. Thereafter, the digitizer records the annotations made by the digitizer operator to the previously digitized sheet of paper.
REFERENCES:
patent: 5485176 (1996-01-01), Ohara et al.
patent: 5579034 (1996-11-01), Aoyama et al.
patent: 5631741 (1997-05-01), Matthews
Educational Testing Service
Shankar Vijay
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