Registers – Coded record sensors – Particular sensor structure
Patent
1979-05-07
1980-10-28
Cook, Daryl W.
Registers
Coded record sensors
Particular sensor structure
235459, 250555, 3401463AG, G06K 714, G08C 906, G06K 900
Patent
active
042302650
ABSTRACT:
An adaptive threshold optical reader for detecting optically encoded information when positioned within an optical path, including a light source for producing light energy along the optical path, a light detector responsive to the light energy along the optical path and for producing an ouput signal in accordance with the light energy detected by the light detector, means responsive to the output signal from the light detector and with the means having at least two states and with the means in a first state producing an adaptive threshold signal when there is no optically encoded information positioned within the optical path and with the adaptive threshold signal representative of the output signal from the light detector with a threshold level of optically encoded information and adaptive to optical changes and with the means in a second state for producing an information signal representative of the output signal from the light detector when there is optically encoded information positioned within the optical path, means responsive to the adaptive threshold signal for storing the adaptive threshold signal, and means responsive to the stored adaptive threshold signal and the information signal for detecting the presence of optically encoded information in the information signal above a threshold level in accordance with the stored adaptive threshold signal.
REFERENCES:
patent: 3675201 (1972-07-01), McKissick et al.
patent: 3692983 (1972-09-01), Cucciati et al.
patent: 3778768 (1973-12-01), Brisk et al.
patent: 3833833 (1974-09-01), Haupt et al.
Cook Daryl W.
Schwartz Charles H.
Transaction Technology Inc.
LandOfFree
Adaptive threshold optical reader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive threshold optical reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive threshold optical reader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-264375