发明名称 |
Quadrature decoder filtering circuitry for motor control |
摘要 |
The disclosed quadrature decoder filtering circuitry for motor control uses one quadrature signal to correct an error in the other quadrature signal, thus allowing a noisy signal due to large dust particles or scratches to be recovered. In some implementations, a system processing for quadrature signals comprises a first circuitry triggered by edges of a first quadrature signal to detect inactivity of a second quadrature signal during consecutive edges of the first quadrature signal. A second circuitry is operable to count the number of consecutive edges of the first quadrature signal during inactivity of the second quadrature signal. A third circuitry is operable to combine transitions of the first quadrature signal with the second quadrature signal during a period of time determined by the count value of the second circuitry. |
申请公布号 |
US8190956(B2) |
申请公布日期 |
2012.05.29 |
申请号 |
US20090421348 |
申请日期 |
2009.04.09 |
申请人 |
VERGNES ALAIN;TIENNOT RENAUD;ATMEL CORPORATION |
发明人 |
VERGNES ALAIN;TIENNOT RENAUD |
分类号 |
G06F11/00 |
主分类号 |
G06F11/00 |
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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