Symbol reading device

Details Symbol reading device Symbol reading device

1995-04-25

1997-02-25

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235462, G06K 710

Patent

active

056061609

ABSTRACT:
An encoded symbol reading device capable of reading and decoding a tessellated symbol. A detector detects an optical image formed by the encoded symbol and outputs a signal corresponding to the optical image. The signal is compared with threshold values and a 1-bit data value is output. The 1-bit data values are converted into an n-bit data value which is stored in a memory. The threshold values are also stored in memory and are obtained by detecting an optical image formed by a surface having a predetermined color.

REFERENCES:
patent: 5218190 (1993-06-01), Hardesty
patent: 5272322 (1993-12-01), Nishida

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