Registers – Coded record sensors – Particular sensor structure
Patent
1990-10-15
1992-07-07
Pitts, Harold
Registers
Coded record sensors
Particular sensor structure
235456, 235494, G06K 710
Patent
active
051285282
ABSTRACT:
Matrices, devices and processes for identifying articles. The matrices employ a pattern of dots which may be decoded by an imager such as those use in CCD cameras. A reference marker, information dots corresponding to characters in a selected symbology system and a reference cue which may be part of the reference marker or information dots, or a separate mark, are interpreted by comparing distances between the reference marker and information dots, and the angles of the information dots to the reference cue relative to the reference marker in order to produce a series of vectors. The vectors may be scaled for distance and compensated for attitude of the matrices relative to the imager, and are compared to information in a database in order to identify characters in the symbology system that correspond to the information dots. The characters may be stored and compared to database information such as, for instance, a list of names and addresses. The matrices may be placed in a far smaller area than conventional bar code symbols, may be produced using a far broader range of media and inks than conventional bar coding technology, and may appear in a far less obtrusive and conspicuous manner because of reflectance tolerances enjoyed by CCD imager technology not present in conventional bar coding technology.
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Dittler Brothers, Inc.
Pitts Harold
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