Method and apparatus for verifying indicia correctly provided on an
object
    1.
    发明授权
    Method and apparatus for verifying indicia correctly provided on an object 失效
    用于在对象上正确提供的用于验证标记的方法和装置

    公开(公告)号:US4900941A

    公开(公告)日:1990-02-13

    申请号:US98581

    申请日:1987-09-18

    IPC分类号: B07C3/14 G06K7/10

    CPC分类号: G06K7/10861 B07C3/14

    摘要: A technique for verifying that indicia, such as print indicia, are provided at the correct location(s) on an object. Relative movement between the object and a sensor is provided. If sensed indicia are located at an expected position on the object, an indicia-bearing object is vertified. One or more samples of a proper object are scanned to establish a template which defines those locations at which indicia on the samples are located. This template is used subsequently to verify the presence of proper indicia-bearing objects.

    摘要翻译: 用于验证标记(例如打印标记)的技术被提供在对象上的正确位置。 提供物体与传感器之间的相对移动。 如果检测到的标记位于物体上的预期位置,则标记物体被折叠。 扫描适当对象的一个​​或多个样本以建立模板,其定义样本上的标记所位于的那些位置。 此模板随后用于验证是否存在适当的标记物体。

    Method and apparatus for generating encryption/decryption key
    2.
    发明授权
    Method and apparatus for generating encryption/decryption key 失效
    用于生成加密/解密密钥的方法和装置

    公开(公告)号:US4878246A

    公开(公告)日:1989-10-31

    申请号:US188866

    申请日:1988-05-02

    IPC分类号: H04L9/22

    CPC分类号: H04L9/0866 H04L9/12

    摘要: An encryption/decryption key is generated from an identification number ID by first generating two sets of numbers from the identification number ID, based upon known expressions. The first set of numbers are employed as coefficients of a first polynomial to generate N first numbers for x=0, 1 . . . N-1 (N is the number of bits of the key) and a second number corresponding to each first number is generating employing the second set of numbers as coefficients and the generated first numbers as variables. The ordered pairs of first and second numbers generated correspond to addresses of a memory at which bits of the key are stored, the order of the bits being determined by the corresponding values of X. The expressions employ modular arithmetic using prime numbers as bases.

    摘要翻译: 根据已知的表达式,首先从识别号码ID生成两组数字,从识别号码ID生成加密/解密密钥。 第一组数字被用作第一多项式的系数,以产生x = 0,1的N个第一数字。 。 。 N-1(N是密钥的比特数),并且对应于每个第一个号码的第二个数字正在使用第二组数字作为系数,并且生成的第一个数字作为变量。 所产生的第一和第二数字的有序对对应于存储器的位的存储器的地址,这些位的顺序由X的对应值确定。这些表达式使用使用素数的模数运算作为基础。