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    • 7. 发明授权
    • Bar code scanner positioning
    • 条码扫描仪定位
    • US06206288B1
    • 2001-03-27
    • US09175607
    • 1998-10-20
    • Robert MayStephen M. OsterweilSundeep KumarHal CharychVadim R. Gololobov
    • Robert MayStephen M. OsterweilSundeep KumarHal CharychVadim R. Gololobov
    • G06K710
    • G06K7/10792G06K7/10861
    • A method of reading bar code symbols includes determining one or more parameters based upon the quantity and/or quality of the data which is being acquired, and providing the user with information concerning that parameter. The parameter may, for example, be the rate at which code words in the symbol are being read, and that information may be passed to the user by way of an LED which flashes at a rate which varies with the data acquisition rate. For a given bar code symbol being read, the rate of flashing varies with the position of the bar code reader with respect to the symbol. To improve the data acquisition rate, the user simply moves and/or rotates the bar code reader with respect to the symbol in a direction which causes the rate of flashing to increase. The invention extends to a bar code reader having means for providing an indication to a user of the relative suitability, for optimal reading of a symbol, of the current position of the reader.
    • 读取条形码符号的方法包括基于所获取的数据的数量和/或质量来确定一个或多个参数,以及向用户提供关于该参数的信息。 该参数可以是例如符号中的代码字被读取的速率,并且该信息可以通过以随数据获取速率而变化的速率闪烁的LED传递给用户。 对于正在读取的给定条形码符号,闪烁速率随着条形码读取器相对于符号的位置而变化。 为了提高数据采集速率,用户简单地使条形码读取器相对于符号沿着使闪烁速率增加的方向移动和/或旋转。 本发明扩展到条形码读取器,其具有用于向用户提供用于读取器的当前位置的相对适合性(用于符号的最佳读取)的指示的装置。
    • 8. 发明授权
    • Two-dimensional bar code symbology using implicit version information
encoding
    • 二维条码符号系统使用隐式版本信息编码
    • US6047892A
    • 2000-04-11
    • US115355
    • 1998-07-14
    • Frederick SchuesslerKevin HunterSundeep KumarCary Chu
    • Frederick SchuesslerKevin HunterSundeep KumarCary Chu
    • G06K19/06G06K7/10
    • G06K19/06037
    • A electro-optical memory includes a substrate on which is printed (or otherwise inscribed) a complex symbol or "label" or "bar code" of a high density two-dimensional symbology. The bar code contains component symbols or "codewords" which are placed in row and column formation, with a variable number of codewords per row, and a variable number of rows. The symbology utilizes implicit bar code encoding scheme for implicit encoding the number of rows and the number of columns of codewords, as well as a predetermined amount of error correction. The symbology is capable of supporting a fixed number of bar code variants, with each variant having a predetermined number of rows and columns of codewords, and a predetermined error correction capability. For some codewords the implicit encoding scheme is combined with a gray coding scheme to reduce the inter-row codeword crosstalk. Systems are used for printing and decoding the bar codes of the invented symbology in applications where improved storage density and tight real estate requirements are of utmost importance. A memory may be used in conjunction with a scanner and a suitable control system in a number of applications, e.g., robotics operations or automated object searching.
    • 电光存储器包括其上印有(或以其它方式内接)高密度二维符号系统的复合符号或“标签”或“条形码”的基板。 条形码包含以行和列形成的分量符号或“码字”,每行可变数量的码字和可变数量的行。 该符号系统利用隐式条形码编码方案对行数和码字列的数量进行隐式编码,以及预定量的纠错。 符号系统能够支持固定数量的条形码变体,每个变体具有预定数量的行和行的码字以及预定的纠错能力。 对于一些码字,隐式编码方案与灰度编码方案相结合以减少行间码字串扰。 系统用于在改进的存储密度和紧密的房地产要求至关重要的应用中对本发明的符号系统的条形码进行打印和解码。 存储器可以与多个应用中的扫描器和合适的控制系统结合使用,例如机器人操作或自动对象搜索。
    • 9. 发明授权
    • Color processing for bar code symbol compaction
    • 条码符号压实的颜色处理
    • US5576528A
    • 1996-11-19
    • US363472
    • 1994-12-23
    • Steven M. ChewSundeep KumarMichael O'Haire
    • Steven M. ChewSundeep KumarMichael O'Haire
    • G06K19/06G06F7/12
    • G06K19/06037G06K2019/06225
    • A method and apparatus for increasing the information density of a bar code symbol by generating multiple constituent bar code symbols, wherein each one is formed in a different color selected from a group of various primary colors, and overlaying each differently colored symbol on top of each other, thus forming an aggregate bar code symbol of various colors. In areas where the differently colored bars overlap each other, colors distinct from those in the original group of colors are formed. The aggregate bar code symbol is scanned by a solid state imaging device, and the scanned image is resolved by image processing techniques into the three constituent bar code symbols of the various colors. Each bar code symbol is then individually processed and decoded in accordance with the particular symbology used to encode the constituent bar code symbols. As a result of the present invention, multiple bar code symbols are printed in the space normally required by one bar code symbol, and each constituent symbol is separated by color resolution and decoded to form the original data. Thus, the information density of the bar code system is increased without the need for a new symbology. In addition, a single bar code symbol may be divided into multiple portions of substantially the same size and printed substantially over each other in different colors, thus producing a single compacted bar code symbol with increased information density. The compacted bar code symbol may be recovered by scanning and resolving the symbol back into its constituent portions, concatenating the portions together, and decoding the resulting bar code symbol in accordance with standard techniques.
    • 一种用于通过生成多个组成条形码符号来增加条形码符号的信息密度的方法和装置,其中每一个都以不同的原色组合选择的不同颜色形成,并且将每个不同颜色的符号覆盖在每个 从而形成各种颜色的聚集条形码符号。 在不同颜色的条重叠的区域中,形成与原始颜色组不同的颜色。 聚合条形码符号由固态成像装置扫描,并且扫描图像通过图像处理技术解析成各种颜色的三个组成条形码符号。 然后根据用于编码组成条形码符号的特定符号系统对每个条形码符号进行单独处理和解码。 作为本发明的结果,在通常由一个条形码符号需要的空间中打印多个条形码符号,并且每个构成符号通过颜色分辨率分离并被解码以形成原始数据。 因此,条形码系统的信息密度增加,而不需要新的符号系统。 此外,单个条形码符号可以被划分成大致相同尺寸的多个部分,并且以不同的颜色基本上彼此印刷,从而产生具有增加的信息密度的单个压实的条形码符号。 压缩的条形码符号可以通过将符号扫描并分解回其组成部分,将这些部分连接在一起,并根据标准技术对所得到的条形码符号进行解码来恢复。