Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
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7/00
Methods or arrangements for sensing record carriers,; e.g. for reading patterns;
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G06K7/10
by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
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G06K7/10009
sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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G06K7/10019
resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
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G06K7/10079
the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
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G06K7/10089
the interrogation device using at least one directional antenna or directional interrogation field to resolve the collision
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G06K7/10099
the directional field being used for pinpointing the location of the record carrier, e.g. for finding or locating an RFID tag amongst a plurality of RFID tags, each RFID tag being associated with an object, e.g. for physically locating the RFID tagged object in a warehouse
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