Apparatus and method for coding and reading codes

Details Apparatus and method for coding and reading codes Apparatus and method for coding and reading codes

1987-06-23

1990-10-23

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

21912162, 21912169, G06K 900

Patent

active

049658298

ABSTRACT:
An apparatus and method for applying code recordings to objects, such as record members and the like, and reading such codes for the purposes of record keeping, identifying, pricing, routing and other functional purposes associated with information handling and the storage and retrieval of information. In one form, a select portion of a record member or recording is detected by means of an electro-optical sensor and an electronic circuit for processing and analyzing signals output by such sensor as it senses an object or recording. In a particular form, the object or record member contains a layer of recording material along one or more band-like areas on which are provided recordings to be electro-optically read.

REFERENCES:
patent: 3587856 (1971-06-01), Lemelson
patent: 4213163 (1980-07-01), Lemelson
patent: 4304981 (1981-12-01), Gappa
patent: 4307282 (1981-12-01), Gappa
patent: 4360728 (1982-11-01), Drexler
patent: 4387983 (1983-06-01), Masegi
patent: 4675498 (1987-06-01), Lemelson
patent: 4758703 (1988-07-01), Drever et al.

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