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US 2006/0186853 A1Published application
Method for identifying the rotation of a stepper motor driving at least one hand of a clock
OwnerHanna Brummack, Wolfram Hodappinventors
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OwnerHanna Brummack, Wolfram Hodappinventors
Estimating the term…
In a method for identifying the rotation of a stepper motor which includes a rotor provided with a motor coil driving at least one hand of a timepiece, wherein a drive voltage pulse and a first detection voltage pulse are delivered to the motor coil, and wherein the position of the rotor is determined with the aid of a first pulse response to the first detection voltage pulse. The method includes delivering to the motor coil a second detection voltage pulse having a polarity opposite to the polarity of the first detection voltage pulse, and determining the position of the rotor in accordance with a second pulse response to the second detection pulse. Optionally, there may be delivered to the motor coil a stabilization voltage pulse having a polarity opposite to the polarity of the first drive voltage pulse.
1-10. (canceled)
A method for identifying the rotation of a stepper motor which includes a rotor provided with a motor coil driving at least one hand of a timepiece, comprising the steps of:
The method according to claim 12, further comprising delivering to the motor coil, prior to step B, a stabilization voltage pulse having a polarity opposite to the polarity of the first drive voltage pulse.
In a method for identifying the rotation of a stepper motor which includes a rotor provided with a motor coil driving at least one hand of a timepiece, wherein a drive voltage pulse and a first detection voltage pulse are delivered to the motor coil and wherein the position of the rotor is determined with the aid of a first pulse response to the first detection voltage pulse, the improvement comprising the steps of:
Dependencies are inferred from the claim text.