G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1, 352/32
G11B 7/013 (2006.01) G06K 1/12 (2006.01) G06K 19/06 (2006.01) G11B 7/00 (2006.01) G11B 7/0033 (2006.01) G11C 13/04 (2006.01)
Patent
CA 1221166
ABSTRACT The method for optically encoding digital data (12) on a substrate (11) to form a data record carrier (10) in- clues the steps of: selecting a track (14) path on the substrate (11); selecting a data cell length (L) in the direction of the track (14) for each bit of data to be stored in each cell (15) on each track (14); selecting a cell width dimension (W) transverse to the direction of the track (14); selecting an optical non-transition cell (15) for one form of logic (0 or 1) to be stored in each such non-transition cell (15); selecting an optical tran- sition cell (15) for the other form of logic (1 or 0) to be stored in each such other transition cell (15); creat- ing at least one track (14) of digital data (12) on the substrate (11) comprised of a series of cells (15) each having the same cell length (L) in the direction of the track (14); establishing in each non-transition cell (15) on the substrate (11) a fully reflective or transmissive surface or a fully non-reflective or non-transmissive sur- face; and, establishing in each transition cell (15) on the substrate (11) a reflective or transmissive surface over part of the cell (15) extending transverse to the di- rection of the track (14) and a non-reflective or non- transmissive surface over the other part of the cell (15) extending transverse to the direction of the track (14).
429630
Borden Ladner Gervais Llp
News Log International Inc.
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