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US 6,807,128 B2Granted
Position detecting and correcting device for timepiece
OwnerChih Hao Yiuinventor
Life of this patent
Estimating the term…
Abstract
A timepiece includes a reference wheel and a target wheel each having one or more reflective members for reflecting a light generated from a light emitting device. The position of the reference wheel may be determined when receiving a starting code, in order to align an orifice of the reference wheel with the light emitting device, for allowing the light to be reflected by the reflective member of the target wheel. The reflective members of the target wheel are arranged in a binary code sequence for determining the position of the target wheel relative to the reference wheel.
Claims7
A timepiece comprising:
- a light emitting device for generating a light,
- a reference wheel including at least one orifice formed therein for receiving the light generated by said light emitting device,
- means for aligning said at least one orifice of said reference wheel with said light emitting device,
- a target wheel including a binary code sequence having a plurality of digits provided thereon each representing an “on” or “1” signal digit or an “off” or “0” signal digit,
- a plurality of reflective members arranged on said target wheel and disposed on positions corresponding to said “on” or “1” signal digits of said binary code sequence of said target wheel, for reflecting the light generated by said light emitting device,
- means for driving said reference wheel and said target wheel separately, and
- a light receiving device for receiving the light reflected from said reflective members to determine said “on” or “1” signal digits of said binary code sequence of said target wheel.
4 more elements
Dependencies are inferred from the claim text.