Optical jog wheel
First Claim
1. A user navigational apparatus comprising:
- a dial;
a code wheel coupled to the dial, wherein the code wheel comprises a track of alternating reflective and non-reflective sections; and
an encoder comprising an emitter and a detector, the emitter configured to generate a light signal incident on the track of the code wheel, 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.
3 Assignments
0 Petitions
Accused Products
Abstract
A user navigational apparatus. The user navigational apparatus includes a code wheel and an encoder. The code wheel is coupled to a dial. The code wheel includes a track of alternating reflective and non-reflective sections. The optical reflective encoder includes an emitter and a detector. The emitter generates a light signal incident on the track of the code wheel. The detector detects a reflected light signal. The reflected light signal 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. Embodiments of this type of user navigational apparatus achieve reduced thickness compared to conventional implementations of jog wheels.
29 Citations
20 Claims
-
1. A user navigational apparatus comprising:
-
a dial; a code wheel coupled to the dial, wherein the code wheel comprises a track of alternating reflective and non-reflective sections; and an encoder comprising an emitter and a detector, the emitter configured to generate a light signal incident on the track of the code wheel, 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A user navigational apparatus comprising:
-
a rotary dial; means for generating a light signal incident on a coded track, wherein the coded track comprises alternating reflective and non-reflective sections; and means for detecting motion of the coded track, wherein the coded track is configured to move in response to a user movement of the rotary dial. - View Dependent Claims (15, 16, 17)
-
-
18. A method for making a user navigational apparatus, the method comprising:
-
coupling a code wheel to a rotary dial, wherein the code wheel comprises a track of alternating reflective and non-reflective sections; mounting an emitter on a circuit substrate relative to the code wheel, the emitter to generate a light signal incident on the track of the code wheel; and mounting a detector on the circuit substrate relative to the code wheel, the detector 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. - View Dependent Claims (19, 20)
-
Specification