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    • 1. 发明授权
    • System and method for identifying erasures in a 2D symbol
    • 用于识别2D符号中的擦除的系统和方法
    • US08162222B2
    • 2012-04-24
    • US12359178
    • 2009-01-23
    • Mostafa KrichiPatrice Thebault
    • Mostafa KrichiPatrice Thebault
    • G06K7/10G06K19/06
    • G06K7/14G06K7/1417
    • One embodiment of a method for identifying a codeword as an erasure in a Quick Response code (QR code) captured by a bar code reader includes, identifying the scrambling mask used for encoding the data in the QR code. A location of the codeword in the QR code corresponds with a portion of the scrambling mask. The codeword comprises multiple codeword bits and the portion of the scrambling mask comprises multiple mask bits. The method further includes, generating an unscrambled codeword by performing a logical operation between each of the multiple codeword bits and each of the multiple mask bits, generating a reference matrix by applying the scrambling mask to a uniform matrix, and/or comparing the unscrambled codeword with the reference matrix to determine whether the codeword is the erasure.
    • 用于在由条形码读取器捕获的快速响应码(QR码)中识别码字作为擦除的方法的一个实施例包括:识别用于对QR码中的数据进行编码的加扰掩码。 QR码中的码字的位置对应于加扰掩码的一部分。 码字包括多个码字比特,并且加扰掩码的部分包括多个掩码比特。 该方法还包括:通过在多个码字比特和每个多个掩码比特之间执行逻辑运算来产生未加扰的码字,通过将加扰掩码应用于均匀矩阵来生成参考矩阵,和/或将未加扰的码字 使用参考矩阵来确定码字是否是擦除。
    • 2. 发明申请
    • SYSTEM AND METHOD FOR IDENTIFYING ERASURES IN A 2D SYMBOL
    • 用于识别2D符号中的有害物质的系统和方法
    • US20090212111A1
    • 2009-08-27
    • US12359178
    • 2009-01-23
    • Mostafa KrichiPatrice Thebault
    • Mostafa KrichiPatrice Thebault
    • G06K7/10G06K5/00G06K19/06
    • G06K7/14G06K7/1417
    • A system and method for identifying erasures in a 2D symbol is disclosed. One embodiment of a method for marking a codeword as an erasure in a Quick Response code (QR code) captured by a bar code reader includes, identifying the scrambling mask used for encoding the data in the QR code. A location of the codeword in the QR code corresponds with a portion of the scrambling mask. The codeword comprises multiple codeword bits and the portion of the scrambling mask comprises multiple mask bits. The method further includes, generating an unscrambled codeword by performing a logical operation between each of the multiple codeword bits and each of the multiple mask bits, generating a reference matrix by applying the scrambling mask to a uniform matrix, and/or comparing the unscrambled codeword with the reference matrix to determine whether the codeword is the erasure.
    • 公开了一种用于识别2D符号中的擦除的系统和方法。 用于将码字标记为由条形码读取器捕获的快速响应码(QR码)中的擦除的方法的一个实施例包括识别用于对QR码中的数据进行编码的加扰掩码。 QR码中的码字的位置对应于加扰掩码的一部分。 码字包括多个码字比特,并且加扰掩码的部分包括多个掩码比特。 该方法还包括:通过在多个码字比特和每个多个掩码比特之间执行逻辑运算来产生未加扰的码字,通过将加扰掩码应用于均匀矩阵来生成参考矩阵,和/或将未加扰的码字 使用参考矩阵来确定码字是否是擦除。