Optical information reading apparatus

Details Optical information reading apparatus Optical information reading apparatus

1986-11-04

1989-04-04

Pellinen, A. D.

Registers

Coded record sensors

Particular sensor structure

235462, 235454, G06K 710

Patent

active

048188565

ABSTRACT:
Apparatus for reading optical information such as a bar code capable of reflecting ambient light and including a hand-held reader containing an image sensor. The hand-held reader is constructed so that ambient light illuminates the optical information, whereby an image of the optical information is imaged by ambient light reflected from the optical information on the image sensor so that the image is converted into an electric signal. The hand-held reader further includes a light detector for detecting intensity of the ambient light and the image sensor is controlled so that the exposure time thereof is changed in accordance with intensity of the ambient light detected by the light detector.

REFERENCES:
patent: 4210802 (1980-07-01), Sakai
patent: 4323772 (1982-04-01), Serge
patent: 4335302 (1982-06-01), Robillard
patent: 4408120 (1983-10-01), Hara et al.
patent: 4488678 (1983-12-01), Hara et al.
patent: 4516017 (1985-05-01), Hara et al.
patent: 4528444 (1985-07-01), Hara et al.
patent: 4538060 (1985-08-01), Sakai et al.
patent: 4682015 (1987-07-01), Quan
"How to Select and Use Image Sensor", Daily Industrial Newspaper Co. of Japan, pp. 42-45 and 145; published Jan. 25, 1985.

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