发明名称 |
Encoder with reference marks |
摘要 |
A scale (10) has magnetic incremental scale marks in a track (10a), and a pseudo-random code sequence in a reference mark track (10b). Sensors (2,3) feed the pattern of the code in the track (10b) into a bi-directional shift register (18). So that a user can select any desired position for use as a reference mark, a memory (24) is provided, into which any selected code value can be pre-stored. A comparator (26) then compares the code value in the shift register (18) with the code value in the memory (24) and outputs a reference mark signal (Ri) when they match.
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申请公布号 |
US2005060905(A1) |
申请公布日期 |
2005.03.24 |
申请号 |
US20040500727 |
申请日期 |
2004.07.06 |
申请人 |
NOVAK JANEZ;DOLSAK GREGOR |
发明人 |
NOVAK JANEZ;DOLSAK GREGOR |
分类号 |
G01D5/245;G01D5/249;(IPC1-7):B26D7/28 |
主分类号 |
G01D5/245 |
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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