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Cylindrical encoder

  • US 20050040323A1
  • Filed: 08/21/2003
  • Published: 02/24/2005
  • Est. Priority Date: 08/21/2003
  • Status: Abandoned Application
First Claim
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1. A cylindrical encoder, comprising:

  • a cylinder having a coding surface disposed about a rotational axis, the coding surface having a series of code lines that spiral about the rotational axis; and

    an imaging system sensing movement of the series of code lines when the cylinder rotates about the rotational axis.

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