公开(公告)号：US5553084A

公开(公告)日：1996-09-03

申请号：US369731

申请日：1995-01-06

Applicant: H. Sprague Ackley ,  Christopher A. Wiklof

Inventor： H. Sprague Ackley ,  Christopher A. Wiklof

IPC: G06K7/14 ,  H03M13/00 ,  G06K5/00

CPC classification number: G06K7/1473 ,  G06K7/14 ,  H03M13/00

Abstract: A method and apparatus for error correction enhancement for machine-readable symbols applies particularly to symbols having symbol characters, repeating characters such as pad characters, and error correction characters derived from the symbol and pad characters. The method and apparatus read a selected symbol where the selected symbol has at least one damaged pad character. After failing to decode the symbol, the method determines that the symbol has at least one damaged pad character and then locates at least two consecutive pad characters in the selected symbol. The method replaces any damaged pad characters, and then again attempts to decode the symbol, using the error correction characters, after the pad characters have been replaced.

Abstract translation: 用于机器可读符号的用于纠错增强的方法和装置特别地适用于具有符号字符，重复字符（例如填充字符）和从符号和填充字符导出的纠错字符的符号。 所述方法和装置读取所选择的符号，其中所选择的符号具有至少一个损坏的垫字符。 在不能解码符号之后，该方法确定符号至少有一个损坏的焊盘字符，然后在所选符号中至少找到两个连续的焊盘字符。 该方法替换任何损坏的填充字符，然后在替换填充字符后，再次尝试使用纠错字符对符号进行解码。