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    • 2. 发明公开
    • Method and apparatus for automatically reading bar code symbols
    • Verfahren undGerätzum automatischen Lesen von Streifenkode-Symbolen
    • EP0871138A3
    • 1999-12-15
    • EP98201375.7
    • 1992-09-17
    • METROLOGIC INSTRUMENTS, INC.
    • Rockstein, George B.Wilz, David M. Sr.Blake, Robert E.Knowles, Carl H.
    • G06K7/10
    • G06K7/10891G02B26/106G06K7/10G06K7/10564G06K7/10584G06K7/10594G06K7/10603G06K7/10663G06K7/10673G06K7/10693G06K7/10702G06K7/10792G06K7/10801G06K7/10811G06K7/10851G06K7/10861G06K7/10871G06K7/10881G06K7/109G06K7/14G06K7/1443G06K17/0022G06K2207/1012G06K2207/1016G06K2207/1017G06K2207/1018
    • Method and apparatus for automatically reading bar code symbols is disclosed. One aspect of the present invention concerns a method of reading bar code symbols using an automatic hand-holdable bar code symbol reading device. In general, the automatic bar code symbol reading device comprises a hand-holdable housing containing operative elements which provide an object detection field and a scan field each defined external to the housing. The method involves automatically detecting the presence of an object within the object detection field by sensing energy reflected off the object. In a preferred embodiment, the energy reflected off the object is IR radiation produced from an object sensing energy source disposed within the housing. In automatic response to the detection of the object within the object detection field, the hand-holdable device detects the presence of a bar code aligned by the user within the scan field using a laser beam produced within the housing. Then, in automatic response to the detection of a bar code in the scan field, the automatic hand-holdable bar code symbol reading device reads the detected bar code in the scan field by producing scan data signals from the detected bar code and thereafter collecting and analyzing the same. Another aspect of the present invention concerns a hand-holdable data collection device adapted for use with the automatic bar code symbol reading device to form a portable symbol reading system which is versatile and simple to use.
    • 公开了用于自动读取条形码符号的方法和装置。 本发明的一个方面涉及使用自动手持式条形码符号读取装置读取条形码符号的方法。 通常,自动条形码符号读取装置包括可手持的壳体,其包含提供物体检测场和每个限定在壳体外部的扫描场的操作元件。 该方法涉及通过感测从物体反射的能量来自动检测对象检测区域内物体的存在。 在优选实施例中,从物体反射的能量是从设置在壳体内的物体感测能量源产生的IR辐射。 在对象检测区域内对物体的检测的自动响应中,手持式设备使用在壳体内产生的激光束来检测用户在扫描场内对齐的条形码的存在。 然后,在对扫描场中的条形码的检测的自动响应中,自动手持条形码符号读取装置通过从检测到的条形码产生扫描数据信号,然后收集和 分析一下 本发明的另一方面涉及一种可手持式数据采集装置,其适于与自动条形码符号读取装置一起使用,以形成通用且易于使用的便携式符号读取系统。