Automatic hand-supportable laser bar code symbol scanner and method of reading bar code symbols using the same
Patent 5260553 Issued on November 9, 1993. Estimated Expiration Date: 
November 9, 2010. 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.
November 9, 2010. 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 D305885 D307894 3911270 3925639 Optical bar code reader Wand turn-on control Control circuit for a code reading device Method and apparatus for recognizing code information Method and apparatus for reading bar coded data wherein the light source is periodically energized Power limiting circuit for bar code reader InventorsAssigneeApplicationNo. 583421 filed on 09/17/1990US Classes:235/462.01, Bar code235/455, Light level control235/462.31, Including object detection235/462.45Hand-held (e.g., portable)ExaminersPrimary: Weinhardt, Robert A.Attorney, Agent or FirmInternational ClassG06K 007/10AbstractAn automatic bar code symbol reading system comprising components for carrying out object detection, scanning, photoreceiving, A/D conversion, bar code presence detection, symbol decoding, data format conversion, data storage and data transmission functions. In general, the bar code symbol reading device includes a control system having a plurality of control centers that control the operation of the system components in accordance with preselected system control operations. Each of the control centers are responsive to control activation signals generated by certain of the system components upon the occurrence of predefined conditions. Certain of the control centers are capable overriding other control centers to provide diverse control capabilities which facilitate execution of intelligent operations and power conservation, during bar code symbol reading.Other References
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