Portable bar code symbol reading device with bar code symbol detection circuit for activating microprocessor implemented bar code symbol decoder
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United States of America Patent
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Jun 13, 1995
Issued Date -
N/A
app pub date -
Nov 4, 1993
filing date -
Sep 17, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
An 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 facilitates execution of intelligent operations and power consumption, during bar code symbol reading.
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