发明名称 |
REGISTRATION MARK DETECTION USING MATCHED FILTERING |
摘要 |
A system and method for detecting a registration mark associated with an object which provides improved resolution between matching and non-matching inputs. The registration mark represents a binary code sequence. Upon detecting a sequence of bits with a sensor, the detected sequence is provided to a code matching filter, which compares the detected sequence with the binary code sequence and produces a detection signal. The code matching filter increases a value of the detection signal for each matching pair of compared bits, and decreases the value of the detection signal for each non-matching pair of compared bits. In this manner, a penalty is assessed for mismatches. This results in a filter output having a high amplitude in response to a matching input, and a low amplitude for non-matching inputs. The system may sample the detected sequence of bits in such a manner as to avoid potential edge timing problems.
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申请公布号 |
WO03030083(A1) |
申请公布日期 |
2003.04.10 |
申请号 |
WO2002US11286 |
申请日期 |
2002.04.09 |
申请人 |
KIMBERLY-CLARK WORLDWIDE, INC. |
发明人 |
PERKINS, MARK, D.;WISNESKI, CURTIS, J.;BLINCOE, GREGORY, M.;SUESS, KENNETH, H. |
分类号 |
A61F13/49;A61F13/15;G06K1/00;G06K7/00;G06K7/10;G06K7/14;(IPC1-7):G06K7/10 |
主分类号 |
A61F13/49 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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