Optical jog wheel with spiral coding element
First Claim
1. A user navigational apparatus comprising:
- a dial;
a coding element coupled to the dial, the coding element comprising a track of alternating reflective and non-reflective sections located within a plane of the coding element, wherein each of the reflective and non-reflective sections comprises a substantially oblique leading edge relative to a direction of movement of the coding element; and
an encoder comprising an emitter and a detector, the emitter configured to generate a light signal incident on the track of the coding element, the detector configured to detect a reflected light signal reflected off of the reflective sections of the track and to generate a channel signal corresponding to the reflected light signal;
a switch coupled to the dial, the switch to generate a first button click operation in response to depression of only a portion of the dial;
an independent button disposed within a center of the dial;
a dome switch operationally coupled to the independent button; and
an illumination ring approximately surrounding the independent button, wherein the dial circumscribes the illumination ring and the independent button.
5 Assignments
0 Petitions
Accused Products
Abstract
A user navigational apparatus. The user navigational apparatus includes a dial, a coding element, and an encoder. The coding element is coupled to a dial. The coding element includes a track of alternating reflective and non-reflective sections, each having a substantially oblique leading edge relative to a direction of movement of the coding element. The encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the coding element. The detector detects a reflected light signal which corresponds to a portion of the incident light signal that is reflected off of the reflective sections of the track. The detector also generates a channel signal corresponding to the reflected light signal.
31 Citations
13 Claims
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1. A user navigational apparatus comprising:
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a dial; a coding element coupled to the dial, the coding element comprising a track of alternating reflective and non-reflective sections located within a plane of the coding element, wherein each of the reflective and non-reflective sections comprises a substantially oblique leading edge relative to a direction of movement of the coding element; and an encoder comprising an emitter and a detector, the emitter configured to generate a light signal incident on the track of the coding element, the detector configured to detect a reflected light signal reflected off of the reflective sections of the track and to generate a channel signal corresponding to the reflected light signal; a switch coupled to the dial, the switch to generate a first button click operation in response to depression of only a portion of the dial; an independent button disposed within a center of the dial; a dome switch operationally coupled to the independent button; and an illumination ring approximately surrounding the independent button, wherein the dial circumscribes the illumination ring and the independent button. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification