Registers – Coded record sensors – Particular sensor structure
Patent
1997-07-10
1998-06-30
Evans, F. L.
Registers
Coded record sensors
Particular sensor structure
G06K 710
Patent
active
057738092
ABSTRACT:
An apparatus for optically reading a code pattern, made up of numerous code elements, if provided. The apparatus includes a light receiving unit, a photometer and a controller. The light receiving unit includes a plurality of first pixels, charge transfer section and a first charge converting section. The photometer includes a second pixel and a second charge converting section. The controller includes a comparator for comparing a second signal voltage to a predetermined voltage level and a clock generator for supplying a drive clock signal to the charge transfer section when the second signal voltage is greater than the predetermined voltage level. An apparatus for optically reading a combined code pattern which includes information and reference code patterns each made up of first and second code elements which are alternately mixed, is provided. The apparatus for reading a combined code pattern includes a light receiving unit, first and second sample and hold circuits and a binarizing circuit. The light receiving unit includes numerous pixels and a charge transfer section for sequentially transferring charges retained by the numerous pixels.
REFERENCES:
patent: 5548110 (1996-08-01), Storch et al.
Tanimoto Takashi
Watanabe Tohru
Evans F. L.
Sanyo Electric Co,. Ltd.
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