Optical information reading device
Patent 4315245 Issued on February 9, 1982. Estimated Expiration Date: 
April 5, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 5, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3467820 3517167 3533068 3760162 3812347 3911270 Sensing circuit for tape position markers Hand operated optical character recognition wand Light amplitude control system for position and motion transducers Wand lamp control InventorsAssigneeApplicationNo. 06/027416 filed on 04/05/1979US Classes:382/274, Intensity, brightness, contrast, or shading correction235/455, Light level control235/472.01, Hand-held (e.g., portable)250/205, Controlling light source intensity250/568, Digital information382/323Single lineExaminersPrimary: Boudreau, Leo H.Attorney, Agent or FirmInternational ClassesG06K 9/22 (20060101)G06K 7/10 (20060101) Foreign Application Priority Data1978-04-05 JPAbstractAn optical information reading device for character recognition and processing having an array of luminous diodes to illuminate the material to be read. A sensor transmits received data signals to a pattern indentification circuit. The signals are also transmitted to a light control circuit to vary the illumination to the array to provide uniform lighting of the characters to be read.Other References
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