Registers – Coded record sensors – Particular sensor structure
Patent
1983-05-31
1985-08-27
Pitts, Harold I.
Registers
Coded record sensors
Particular sensor structure
235466, G06K 710
Patent
active
045380600
ABSTRACT:
In an optical reading apparatus having a reading sensor for converting optically readable information into an electrical signal by electronically scanning an image of optical information, such as a bar code, a detector is provided to detect the intensity of light incident on an information label on which the information is provided. Data indicative of the light intensity is used to determine a subsequent scanning period in such a manner that the scanning period of the reading sensor is shortened when the light intensity increases or vice versa. Since the decrease in the scanning period results in lower output voltage from the reading sensor, undesirable saturation in circuitry following the reading sensor is effectively prevented, providing stable operation of the reading sensor, such as a bar code reader.
REFERENCES:
patent: 4488678 (1984-12-01), Hara
Hara Masahiro
Sakai Toshiyasu
Teraura Nobuyuki
Nippondenso Co. Ltd.
Pitts Harold I.
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