CN204374974U - 高动态范围的标记读取系统 - Google Patents

高动态范围的标记读取系统 Download PDF

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CN204374974U
CN204374974U CN201420766940.7U CN201420766940U CN204374974U CN 204374974 U CN204374974 U CN 204374974U CN 201420766940 U CN201420766940 U CN 201420766940U CN 204374974 U CN204374974 U CN 204374974U
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T.贤
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    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404—Methods for optical code recognition
    • G06K7/146—Methods for optical code recognition the method including quality enhancement steps

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Abstract

本实用新型涉及高动态范围的标记读取系统。提供了一种标记读取系统，该标记读取系统以高效和及时的方式将标记信号的强度调节到最佳水平。标记读取系统包括：用于获得标记信号的标记捕获子系统、增益调节子系统以及标记解码子系统。增益调节子系统从标记信号中导出多个导出信号。导出信号中的至少两个具有彼此不同的增益调节。标记解码子系统被配置成对导出信号中的至少一个进行解码。

Description

高动态范围的标记读取系统
技术领域
本实用新型涉及标记读取器，诸如条形码读取器。更具体地，本实用新型涉及动态范围的标记读取系统。
背景技术
诸如条形码扫描器之类的标记读取器被典型地配置成从标记获得信息，并且然后对该信息进行解码以供在数据系统中使用。在表示标记信息的信号在标称范围之外的情况下，先进的信号处理技术有利地帮助标记的解码。例如，被定位在距标记读取器较大距离处的读取标记趋向于增加信号干扰并降低信号强度。类似地，由读取相对接近标记读取器的标记（例如在近场中）的尝试所产生的信号趋向于导致增加的信号强度。对于标记读取器来说信号强度可能太强以致于不能解码。
为了处理由在距标记读取器广泛地不同的距离处的标记所提出的挑战，并且因此将标记读取器配置成具有大的视场深度，许多标记读取器合并自动增益控制（AGC）技术。使用这种技术，标记读取器通过使用自动增益控制电路而将从标记接收到的信号调节到落入最佳范围内。如果从标记接收到的信号太强，自动增益控制降低强度。如果从标记接收到的信号太弱，自动增益控制增加信号的强度。
虽然自动增益控制可改善标记读取器的动态范围，但是它具有可能减小标记读取器的有效性的缺点。特别地，依赖自动增益控制可能导致解码中的延迟，该延迟表现为在尝试扫描标记期间由用户经历的滞后。
因此，存在对于一种标记读取系统的需要，该标记读取系统具有以更高效和及时的方式对大动态范围上的信号进行解码的能力。
实用新型内容
因此，在一个方面，本实用新型包括一种标记读取系统，该标记读取系统包括：用于获得标记信号的标记捕获子系统。标记读取系统还包括：用于从标记信号中导出多个导出信号（derivative signal）的增益调节子系统。导出信号中的至少两个具有彼此不同的增益调节。标记读取系统还包括：被配置用于对导出信号中的至少一个进行解码的标记解码子系统。
在一个实施例中，标记捕获子系统被配置成获得关于标记捕获子系统的视场内的条形码符号的信息。
在另一个实施例中，标记捕获子系统是激光扫描子系统，其用于扫描激光扫描子系统的视场内的标记。
在又一个实施例中，标记捕获子系统包括：用于朝向标记投射激光的激光源，以及用于收集从标记反射的激光的光电二极管。
在又一个实施例中，增益调节子系统被配置成从标记信号中导出至少两个导出信号，所述至少两个导出信号具有相对于标记信号的不同的非零增益调节。
在又一个实施例中，增益调节子系统被配置成从标记信号中导出多个导出信号，每个导出信号具有唯一的增益调节。
在又一个实施例中，增益调节子系统包括一个或多个放大器。
在又一个实施例中，增益调节子系统包括级联放大器。
在又一个实施例中，标记解码子系统被配置成串行处理导出信号。
在又一个实施例中，标记解码子系统被配置成并行处理导出信号。
在另一个方面，本实用新型包括一种标记读取系统，该标记读取系统包括：用于获得标记信号的标记捕获子系统。标记捕获子系统包括：（i）用于朝向标记投射激光的激光源，以及（ii）用于收集从标记反射的激光的光电二极管。标记读取系统还包括：用于从标记信号中导出多个导出信号的增益调节子系统。每个导出信号具有唯一的增益调节。标记读取系统还包括：被配置用于对导出信号中的至少一个进行解码的标记解码子系统。
在另一个方面，本实用新型包括一种标记读取方法。获得提供关于标记的信息的标记信号。从标记信号中导出多个导出信号，其中导出信号中的至少两个具有彼此不同的增益调节。对导出信号中的至少一个进行解码。
在一个实施例中，从标记信号中导出多个导出信号的步骤包括：以不同的增益调节来放大标记信号。
在下列详细描述及其附图中进一步解释实用新型的前述说明性概要以及其它示例性的目的和/或优点和实现其的方式。
附图说明
图1是图示根据本实用新型的示例性的标记读取系统的框图。
图2是图示根据本实用新型的示例性的标记读取系统的可替换实施例的框图。
图3是图示根据本实用新型的示例性的标记读取方法的流程图。
图4是图示根据本实用新型的示例性的标记读取方法的可替换实施例的流程图。
具体实施方式
本实用新型包括一种标记读取系统。术语标记旨在广泛地指代各种类型的机器可读标记，包括条形码、QR码、矩阵码、1D码和2D码、RFID标签、近场通信智能芯片、机器可读字符等。标记典型地是诸如产品号码、包裹跟踪号码或个人身份号码之类的信息（例如数据）的图形表示。使用标记读取器将数据输入到系统中而不是手动数据录入一般导致更快和更可靠的数据录入。根据本实用新型的标记读取系统可包括用来读取标记的各种各样的设备，诸如手持式条形码扫描器、固定位置的全向条形码扫描器、笔型读取器、激光扫描器、CCD读取器、成像扫描器和例如被装备成读取标记的智能电话的移动设备以及类似的设备。
根据本实用新型的标记读取系统尝试将从标记接收到的信号调节到可通过将信号转换成被调制成不同幅度的预定数量的导出信号而被成功地解码的强度水平。典型地，应用到原始信号以生成每个导出信号的调节程度由来自最佳水平的原始信号的预测的变化程度通知。
通过将从识别符号（insignia）反射的原始信号的增益调节预定数量和程度的增益的这种方法大体上减轻依靠自动增益控制技术的显著缺点。因为自动增益控制典型地基于信号的最大幅度（例如峰值幅度）而调节原始信号的强度，在与标记不相关的原始信号中容易受到对峰值的过度补偿（例如尖峰）的影响。例如，当标记读取器的激光沿着标记读取器的视场内的扫描角移动时，光信号不仅可以反射离开标记，而且可以反射离开诸如不锈钢之类的高反射材料。例如当标记承载标签粘贴到容器或其它物体的不锈钢表面时，这将会是这种情况。当标记读取器分析从反射的光信号生成的电信号时，它将检测到电信号的一部分比最佳的更加强烈。为了补偿强度上的该峰值，自动增益控制被用来调节增益以降低整个电信号的强度。虽然这可能良好地带来表示高反射背景对象（例如不锈钢表面）的电信号的部分，但它将可能将表示标记的那部分电信号的强度降低到使得电信号对于标记读取器太弱以致于不能解码的程度。换句话说，自动增益控制可能淘汰电信号的最重要的部分——从标记反射的激光所生成的部分。
根据本实用新型的标记读取系统大体上避免过度补偿的这个问题。标记读取系统应用多个固定水平的增益调节，而不是基于信号的检测到的峰值（或波谷）幅度而调节电信号。典型地通过在标记读取系统的正常使用期间合并电信号将随最佳水平变化的预期的（例如可能的）量来计算这些增益调节。例如，如果标记读取系统旨在具有距标记读取系统1英尺和50英尺之间的动态操作范围，则标记读取系统可包括一个预定增益调节水平，该预定增益调节水平将可能将从50英尺的距离接收的信号的强度调节到足以用于解码信号的最佳强度水平。标记读取系统还可包括第二预定增益调节水平，第二预定增益调节水平将可能将从例如25英尺的距离接收的信号的强度调节到最佳强度水平。标记读取系统还可能包括另一个增益调节水平，当应用到从被定位在距系统3英尺的标记接收的信号时，另一个增益调节水平将导致系统可能成功地解码的信号强度。
将由本领域普通技术人员理解的是：从被反射离开标记的光信号所导出的电信号典型地太弱以致于不能成功地解码。因此，在发起解码过程之前，采用预放大技术来增加信号强度。将理解的是：在已经预放大原始电信号之后，典型地采用根据本实用新型的标记读取系统的增益调节技术。
现在参考图1，根据本实用新型的标记读取系统10包括用于获得标记信号的标记捕获子系统15。标记捕获子系统15获得关于在标记捕获子系统的视场内的标记的信息。典型地，承载标记的对象被放置在标记捕获子系统15的视场内。可替换地，标记捕获子系统15被重新定位，使得承载标记的对象被带入到标记捕获子系统15的视场内。基于其视场内的标记，标记捕获子系统15获得标记信号。典型地，标记信号是表示由标记编码的信息（例如数据）的电信号。可通过转换另一种类型的信号（例如光信号）而获得电信号。
标记读取系统10还包括增益调节子系统20。增益调节子系统20起到创建标记信号的多个副本并且操纵这些副本中每一个的增益以促进标记信号的解码的作用。增益调节子系统20从标记信号中导出多个导出信号。典型地，标记信号被分裂（例如通过信号分裂模块）成导出信号。导出信号表示相同的信息，并且将标记信号分裂成多个导出信号允许这些导出信号被用于不同的但是相关的目的。
标记读取系统10通过以不同方式修改标记信号的强度而尝试获得标记信号的可用（例如可解码的）版本。通过将标记信号的强度增加或减小不同的量，标记读取系统10开发出可被快速分析以确定导出信号中的任一个是否是可解码的导出信号的有限集。因此，除了从原始标记信号创建多个导出信号外，增益调节子系统20还调节关于标记信号的每个导出信号的增益。换句话说，当增益调节子系统20从标记信号创建导出信号时，增益调节子系统20将增益调节应用到标记信号，以创建具有大于、小于或者等于标记信号幅度的幅度（例如电压幅度）的导出信号。典型地，增益调节子系统20从标记捕获子系统25接收标记信号。正如将被由本领域普通技术人员理解的：大于1的增益调节导致具有比标记信号更大的幅度的导出信号；小于1的增益调节导致具有比标记信号更小的幅度的导出信号；而1的增益调节导致具有与标记信号相同幅度的导出信号。
典型地，增益调节子系统20包括电子放大器（即放大器）。更典型地，增益调节子系统20包括多于一个放大器。增益调节子系统20可包括级联放大器。级联放大器利用一系列的放大器，其中每个放大器除了将其输出发送到菊花链（daisy chain）中的下一个放大器的输入以外，还生成导出信号。这样，级联放大器的每一级生成具有增益调节的导出信号而同时将导出信号的副本传递到下一个放大器以用于进一步的放大来创建又一个导出信号。
增益调节子系统20还可包括衰减器以用于减小标记信号的强度以生成具有比标记信号更小幅度的导出信号。换句话说，增益调节子系统20可采用衰减器以应用小于1的增益调节。在标记信号太强以致于不能解码的情况下，标记信号的强度的减小可增加解码标记信号的可能性。例如，在标记比在正常操作条件下所预期的在距离上距标记读取系统10更接近的情况下，标记信号的强度可能太大以致于不能解码。当标记特别接近标记读取系统10时，反射的光不具有与标记在更大距离处时它将具有的一样多的时间来消散。结果，反射的光更强。类似地，在其上印刷有标记的材料有更大反射率的情况下，标记信号的强度可能太大以致于不能解码。在该情况下，与它将用较小反射材料相比，从标记捕获子系统15投射的光以更大的强度反射离开标记，因此导致更强的标记信号。在诸如这些的情况下，通过应用小于零的增益调节而减小标记信号的强度增加标记信号将在可由标记读取系统10成功地解码的范围内的可能性。
在根据本实用新型的标记读取系统10的增益调节子系统20从标记信号中导出多个导出信号之后，导出信号中的至少两个具有彼此不同的增益调节。结果，导出信号中的至少两个具有不同的幅度。典型地，每个导出信号具有与其它导出信号不同的增益调节，意味着每个导出信号具有不同的幅度。不同的增益调节之间的大小上的差异可能取决于应用而变化。典型地，对于需要标记读取系统10读取大动态范围上的标记的应用，不同的增益调节之间的大小中的差异相对大。例如，在标记读取系统10用来读取距标记读取系统10少数米（例如大约2米）远的标记以及距标记读取系统10若干米（例如大约60米）远的标记的情况下，在导出信号的增益调节之间的大小中的差异可能相对大。相反地，在不需要标记读取器具有一样大的动态范围的情况下，则导出信号的增益调节之间的大小中的差异可能相对小。导出信号的增益调节之间的大小中的差异还可取决于被标记读取系统10利用的导出信号的数量。
在根据本实用新型的标记读取系统10的可替换实施例中，增益调节子系统20被配置成从标记信号中导出至少两个导出信号，所述至少两个导出信号具有相对于标记信号的不同的非零增益调节。换句话说，在该可替换实施例中，当增益调节子系统20处理标记信号时，它从标记信号生成具有不同幅度的至少两个导出信号。
在根据本实用新型的标记读取系统10的另一个可替换实施例中，增益调节子系统20被配置成从标记信号中导出多个导出信号，其中每个导出信号具有唯一的增益调节。换句话说，当增益调节子系统20处理标记信号时，增益调节子系统20应用不同的增益调节，以生成从增益调节子系统20输出的多个导出信号中的每一个。例如，示例性的增益调节子系统20可能应用具有下列值的增益调节：-10dB、0dB、3dB、10dB、20dB。在该示例中，增益调节子系统20的输出将是五个不同的导出信号。
导出信号被发送到标记解码子系统25。标记解码子系统25被配置用于对导出信号中的至少一个进行解码。标记解码子系统25包括被配置成解码导出信号的计算机硬件和/或软件。标记解码子系统25可被配置成串行（例如连续地）处理每个导出信号，直到标记解码子系统25成功地解码导出信号中的一个为止。可替换地，标记解码子系统25可被配置用于导出信号中的一些或全部的并行处理。当导出信号中的一个被成功地解码时，解码处理被中断。
如图2中所描绘，在根据本实用新型的标记读取系统10的一个实施例中，标记捕获子系统15是激光扫描子系统15A。激光扫描子系统15A包括用于朝向激光扫描子系统的视场内的标记投射激光的激光源。典型地，激光扫描子系统15A以扫描角来回扫掠激光束。激光扫描子系统15A然后接收反射或散射离开标记的光信号。典型地，光信号由激光扫描子系统15A经由感光器（例如光电二极管）收集，并且被转换成表示标记信号的电信号。
在条形码的情况下，例如，反射离开条形码的浅色（例如白色）部分的光返回到激光扫描子系统15A，作为较强的光信号，然后该光信号被转换成较强的标记信号。相反地，反射离开条形码的深色（例如黑色）部分的光返回到激光扫描子系统15A，作为不太强的光信号。标记解码子系统25能够通过分析标记信号强度中的变化的持续时间和序列而解码标记信号（例如以导出信号的形式）。
在可替换实施例中，标记读取系统10可处理原始标记信号（例如未经处理的标记信号）和从对标记信号的增益调节产生的一个或多个导出信号二者。标记解码子系统25可被配置成接收和解码原始标记信号和导出信号。标记解码子系统25可被配置成在导出信号的任何处理发生之前尝试解码原始标记信号。换句话说，标记解码子系统25可被配置成串行处理原始标记信号和导出信号。如果标记解码子系统25能够解码原始标记信号，标记解码子系统25不尝试解码导出信号。另一方面，如果标记解码子系统25不能够解码原始标记信号，它尝试解码导出信号，因为经应用以创建导出信号的增益调节可能增加成功解码尝试的可能性。可替换地，标记解码子系统25可被配置成尝试并行解码原始标记信号和导出信号。因为它同时处理原始标记信号和导出信号，每当它成功地解码原始标记信号或导出信号时，标记解码子系统25停止解码。虽然该并行方法可能需要更多的处理能力，但是因为解码处理正在同时发生它可导致更快的解码。
在另一个方面，本实用新型包括标记读取方法50。获得提供关于标记的信息的标记信号55。从标记信号中导出多个导出信号，其中导出信号中的至少两个具有彼此不同的增益调节60。解码导出信号中的至少一个65。如图4中所示出，在根据本实用新型的标记读取方法50的可替换实施例中，以不同的增益调节调制（例如放大）标记信号以生成多个导出信号60A。
为了补充本公开，本申请通过引用而整体合并下列专利、专利申请公开和专利申请：美国专利号码6832725；美国专利号码7159783；美国专利号码7128266；美国专利号码7413127；美国专利号码7726575；美国专利号码8390909；美国专利号码8294969；美国专利号码8408469；美国专利号码8408468；美国专利号码8381979；美国专利号码8408464；美国专利号码8317105；美国专利号码8366005；美国专利号码8424768；美国专利号码8322622；美国专利号码8371507；美国专利号码8376233；美国专利号码8457013；美国专利号码8448863；美国专利号码8459557；美国专利号码8469272；美国专利号码8474712；美国专利号码8479992；美国专利号码8490877；美国专利号码8517271；美国专利号码8556176；美国专利号码8561905；美国专利号码8523076；美国专利号码8528819；美国专利申请公开号码2012/0111946；美国专利申请公开号码2012/0223141；美国专利申请公开号码2012/0193423；美国专利申请公开号码2012/0203647；美国专利申请公开号码2012/0248188；美国专利申请公开号码2012/0228382；美国专利申请公开号码2012/0193407；美国专利申请公开号码2012/0168511；美国专利申请公开号码2012/0168512；美国专利申请公开号码2010/0177749；美国专利申请公开号码2010/0177080；美国专利申请公开号码2010/0177707；美国专利申请公开号码2010/0177076；美国专利申请公开号码2009/0134221；美国专利申请公开号码2012/0318869；美国专利申请公开号码2013/0043312；美国专利申请公开号码2013/0068840；美国专利申请公开号码2013/0070322；美国专利申请公开号码2013/0075168；美国专利申请公开号码2013/0056285；美国专利申请公开号码2013/0075464；美国专利申请公开号码2013/0082104；美国专利申请公开号码2010/0225757；美国专利申请公开号码2013/0175343；2012年1月10日提交（Kearney等人）的美国专利申请号码13/347193：Hybrid-Type Bioptical Laser Scanning And Digital Imaging System Employing Digital Imager With Field Of View Overlapping Field Of Field Of Laser Scanning Subsystem（采用具有重叠激光扫描子系统视场的视场的数字成像器的混合型双光学激光扫描和数字成像系统）；2012年2月6日提交（Feng等人）的美国专利申请号码13/367047：Laser Scanning Modules Embodying Silicone Scan Element With Torsional Hinges（包含具有扭铰链的硅胶扫描元件的激光扫描模块）；2012年2月21日提交（Wilz）的美国专利申请号码13/400748：Laser Scanning Bar Code Symbol Reading System Having Intelligent Scan Sweep Angle Adjustment Capabilities Over The Working Range Of The System For Optimized Bar Code Symbol Reading Performance（用于优化的条形码符号读取性能的系统的工作范围上具有智能扫描的扫描角调节能力的激光扫描条形码符号读取系统）；2012年3月28日提交（Havens等人）的美国专利申请号码13/432197：Laser Scanning System Using Laser Beam Sources For Producing Long And Short Wavelengths In Combination With Beam-Waist Extending Optics To Extend The Depth Of Field Thereof While Resolving High Resolution Bar Code Symbols Having Minimum Code Element Widths（用于在解析具有最小代码元素宽度的高分辨率条形码符号时与射束腰部扩展光学器件结合地产生长和短波长以扩展其视场深度的使用激光束源的激光扫描系统）；2012年6月10日提交（Hennick等人）的美国专利申请号码13/492883：Laser Scanning Module With Rotatably Adjustable Laser Scanning Assembly（具有可旋转地可调节激光扫描组件的激光扫描模块）；2012年2月7日提交（Feng等人）的美国专利申请号码13/367978：Laser Scanning Module Employing An Elastomeric U-Hinge Based Laser Scanning Assembly（采用基于弹性U-铰链的激光扫描组件的激光扫描模块）；2013年3月28日提交（Barker等人）的美国专利申请号码13/852097：System and Method for Capturing and Preserving Vehicle Event Data（用于捕获和保存车辆事件数据的系统和方法）；2013年2月28日提交（Samek等人）的美国专利申请号码13/780356：Mobile Device Having Object-Identification Interface（具有对象身份接口的移动设备）；2013年2月28日提交（Sauerwein）的美国专利申请号码13/780158：Distraction Avoidance System（避免分心的系统）；2013年3月5日提交（McCloskey等人）的美国专利申请号码13/784933：Integrated Dimensioning and Weighing System（集成的定尺寸和称重系统）；2013年3月5日提交（McCloskey等人）的美国专利申请号码13/785177：Dimensioning System（定尺寸系统）； 2013年2月28日提交（Todeschini等人）的美国专利申请号码13/780196：Android Bound Service Camera Initialization（安卓绑定服务摄像机初始化）；2013年3月11日提交（Skvoretz）的美国专利申请号码13/792322：Replaceable Connector（可更换的连接器）； 2013年2月28日提交（Fitch等人）的美国专利申请号码13/780271：Vehicle Computer System with Transparent Display（具有透明显示器的车辆计算机系统）；2013年1月8日提交（Chaney）的美国专利申请号码13/736139：Electronic Device Enclosure（电子设备外壳）；2013年2月20日提交（Anderson）的美国专利申请号码13/771508：Optical Redirection Adapter（光学重定向适配器）；2013年1月25日提交的美国专利申请号码13/750304：Measuring Object Dimensions Using Mobile Computer（使用移动计算机测量对象尺寸）；2012年5月15日提交的美国专利申请号码13/471973：Terminals and Methods for Dimensioning Objects（用于给对象定尺寸的终端和方法）；2013年4月10日提交（Corcoran）的美国专利申请号码13/895846：Method of Programming a Symbol Reading System（编程符号读取系统的方法）；2013年4月22日提交（Cunningham等人）的美国专利申请号码13/867386：Point of Sale (POS) Based Checkout System Supporting a Customer-Transparent Two-Factor Authentication Process During Product Checkout Operations（在产品结账操作期间支持客户透明的双因素验证处理的基于销售点（POS）的结帐系统）；2013年5月7日提交（Xian等人）的美国专利申请号码13/888884：Indicia Reading System Employing Digital Gain Control（采用数字增益控制的标记读取系统）；2013年5月16日提交（Xian等人）的美国专利申请号码13/895616：Laser Scanning Code Symbol Reading System Employing Multi-Channel Scan Data Signal Processing with Synchronized Digital Gain Control (SDGC) for Full Range Scanning（采用具有用于全范围扫描的同步数字增益控制（SDGC）的多通道扫描数据信号处理的激光扫描代码符号读取系统）；2013年5月20日提交（Brady等人）的美国专利申请号码13/897512：Laser Scanning Code Symbol Reading System Providing Improved Control over the Length and Intensity Characteristics of a Laser Scan Line Projected Therefrom Using Laser Source Blanking Control（通过使用激光源消隐控制的提供对从其中投射的激光扫描线的长度和强度特性的改进的控制的激光扫描代码符号读取系统）；2013年5月20日提交（Wilz，Sr.等人）的美国专利申请号码13/897634：Laser Scanning Code Symbol Reading System Employing Programmable Decode Time-Window Filtering（采用可编程解码时间窗口过滤的激光扫描代码符号读取系统）；2013年5月24日提交（Smith等人）的美国专利申请号码13/902242：System For Providing A Continuous Communication Link With A Symbol Reading Device（用于提供与符号读取设备的连续通信链路的系统）；2013年5月24日提交（Chamberlin）的美国专利申请号码13/902144：System and Method for Display of Information Using a Vehicle-Mount Computer（用于使用车载计算机的信息显示的系统和方法）；2013年5月24日提交（Hollifield）的美国专利申请号码13/902110：System and Method for Display of Information Using a Vehicle-Mount Computer（用于使用车载计算机的信息显示的系统和方法）；2013年6月7日提交（Jovanovski等人）的美国专利申请号码13/912262：Method of Error Correction for 3D Imaging Device（用于3D成像设备的纠错方法）；2013年6月7日提交（Xian等人）的美国专利申请号码13/912702：System and Method for Reading Code Symbols at Long Range Using Source Power Control（用于使用源功率控制在远距离处读取代码符号的系统和方法）；2013年6月20日提交（Xian等人）的美国专利申请号码13/922339：System and Method for Reading Code Symbols Using a Variable Field of View（用于使用可变视场读取代码符号的系统和方法）；2013年6月26日提交（Todeschini）的美国专利申请号码13/927398：Code Symbol Reading System Having Adaptive Autofocus（具有自适应自动聚焦的代码符号读取系统）；2013年6月28日提交（Gelay等人）的美国专利申请号码13/930913：Mobile Device Having an Improved User Interface for Reading Code Symbols（具有用于读取代码符号的改进的用户接口的移动设备）；2013年7月2日提交（London等人）的美国专利申请号码13/933415：Electronic Device Case（电子设备外壳）； 2013年7月22日提交（Rueblinger等人）的美国专利申请号码13/947296：System and Method for Selectively Reading Code Symbols（用于选择性地读取代码符号的系统和方法）；2013年7月25日提交（Jiang）的美国专利申请号码13/950544：Code Symbol Reading System Having Adjustable Object Detection（具有可调节的目标检测的代码符号读取系统）；2013年8月7日提交（Saber等人）的美国专利申请号码13/961408：Method for Manufacturing Laser Scanners（用于制造激光扫描器的方法）；2013年8月22日提交（Nahill等）的美国专利申请号码13/973315：Symbol Reading System Having Predictive Diagnostics（具有预测性诊断的符号读取系统）；2013年8月22日提交（Wu等人）的美国专利申请号码13/973354：Pairing Method for Wireless Scanner via RFID（用于经由RFID的无线扫描器的配对方法）；2013年8月23日提交（Ye等人）的美国专利申请号码13/974374：Authenticating Parcel Consignees with Indicia Decoding Devices（用标记解码设备验证包裹收货人）；2013年9月5日提交（Feng等人）的美国专利申请号码14/018729：Method for Operating a Laser Scanner（用于操作激光扫描器的方法）；2013年9月6日提交（Todeschini）的美国专利申请号码14/019616：Device Having Light Source to Reduce Surface Pathogens（具有光源以减少表面病原体的设备）；2013年9月11日提交（Gannon）的美国专利申请号码14/023762：Handheld Indicia Reader Having Locking Endcap（具有锁定端盖的手持式标记读取器）；以及2013年9月24日提交（Todeschini）的美国专利申请号码14/035474：Augmented-Reality Signature Capture（增强现实签名捕获）。
在说明书和/或附图中，已经公开了实用新型的典型的实施例。本实用新型不限于这种示例性的实施例。术语“和/或”的使用包括相关联的所列项目中的一个或多个的任意和所有组合。附图是示意性的表示，并且因此不一定按比例绘制。除非另有说明，否则已经以一般的和描述性的意义而不是为了限制的目的而使用特定术语。

Claims (14)

1.一种标记读取系统，包括：
标记捕获子系统，用于获得标记信号；
增益调节子系统，用于从标记信号中导出多个导出信号，其中导出信号中的至少两个具有彼此不同的增益调节；以及
标记解码子系统，被配置用于对导出信号中的至少一个进行解码。
2.根据权利要求1所述的系统，其中所述标记捕获子系统被配置成获得关于在标记捕获子系统的视场内的条形码符号的信息。
3.根据权利要求1所述的系统，其中所述标记捕获子系统是激光扫描子系统，其用于扫描激光扫描子系统的视场内的标记。
4.根据权利要求1所述的标记读取系统，其中所述标记解码子系统被配置用于对标记信号进行解码。
5.根据权利要求1所述的标记读取系统，其中所述增益调节子系统被配置成从标记信号中导出至少两个导出信号，所述至少两个导出信号具有相对于标记信号的不同的非零增益调节。
6.根据权利要求1所述的标记读取系统，其中所述增益调节子系统被配置成从标记信号中导出多个导出信号，每个导出信号具有唯一的增益调节。
7.根据权利要求1所述的标记读取系统，其中所述增益调节子系统包括一个或多个放大器。
8.根据权利要求1所述的标记读取系统，其中所述增益调节子系统包括级联放大器。
9.根据权利要求1所述的标记读取系统，其中所述标记解码子系统被配置成串行处理导出信号。
10.根据权利要求1所述的标记读取系统，其中所述标记解码子系统被配置成并行处理导出信号。
11.一种标记读取系统，包括：
用于获得标记信号的标记捕获子系统，该标记捕获子系统包括：（i）用于朝向标记投射激光的激光源，以及（ii）用于收集从标记反射的激光的光电二极管；
增益调节子系统，用于从标记信号中导出多个导出信号，其中每个导出信号具有唯一的增益调节；以及
标记解码子系统，被配置用于对导出信号中的至少一个进行解码。
12.根据权利要求11所述的标记解码系统，其中所述增益调节子系统包括级联放大器。
13.根据权利要求11所述的标记解码系统，其中所述标记解码子系统被配置成串行处理导出信号。
14.根据权利要求11所述的标记解码系统，其中所述标记解码子系统被配置成并行处理导出信号。
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