G
PHYSICS
G06
COMPUTING OR CALCULATING; COUNTING
G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7/00
Methods or arrangements for sensing record carriers,; e.g. for reading patterns;
G06K7/10
by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
G06K7/10544
by scanning of the records by radiation in the optical part of the electromagnetic spectrum