Optical grid enhancement for improved motor location
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United States of America Patent
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Mar 10, 2015
Grant Date -
Mar 20, 2014
app pub date -
Sep 14, 2012
filing date -
Sep 15, 2011
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Abstract
Methods for performing a scheme that results in a refined measurement pattern within an optical grid are provided. Physically adjusting spacing of elements within an optical grid to achieve enhanced resolution is historically unfeasible, as reduction of the spacing causes light sensors of the optical grid to pick up false signals when reading light beams. Technology introduced by the present invention generates a virtual reduced spacing of the elements within the optical grid by using two signals that are slightly different. These slightly different signals can accomplish, at least, quarter-grid spacing resolution within the optical grid. Additionally, the enhanced resolution derived from the virtual reduced spacing is employed to govern movement of a motor. The motor movement is in response to one or more changes of direction such that the motor is operating in its linear range. Advantageously, the virtual reduced spacing allows for substantial movement in a non-linear phase, while only limited movement in a linear phase is necessary to locate accurately a target within the optical grid.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- INTERMEC IP CORP.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
El, Akel Khalid | Castanet-Tolosan, FR | 11 | 894 |
Serres, Bernard | Dremil Lafage, FR | 6 | 623 |
Stang, Jean-Pierre | Auzeville-Tolosane, FR | 15 | 1040 |
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