Optical sensing in displacement type input apparatus and methods
First Claim
1. An apparatus, comprising:
- an input system comprising a displaceable member movable in an operational zone and a tracking surface that moves in correlation with movement of the displaceable member;
an optical sensor having a field of view of at least a portion of the tracking surface during movement of the displaceable member in the operational zone and being operable to generate optical data in response to light received from the tracking surface; and
a processing system operable to produce motion measures indicative of movement of the tracking surface from the optical data.
8 Assignments
0 Petitions
Accused Products
Abstract
In an input apparatus, an input system includes a displaceable member movable in an operational zone and a tracking surface that moves in correlation with movement of the displaceable member. An optical sensor has a field of view of at least a portion of the tracking surface during movement of the displaceable member in the operational zone and generates optical data in response to light received from the tracking surface. A processing system produces motion measures indicative of movement of the tracking surface from the optical data. In an input method, optical data is generated in response to light received from a field of view of at least a portion of a tracking surface that moves in correlation with movement of a displaceable member during movement of the displaceable member in an operational zone. Motion measures indicative of movement of the tracking surface are produced from the optical data.
27 Citations
23 Claims
-
1. An apparatus, comprising:
-
an input system comprising a displaceable member movable in an operational zone and a tracking surface that moves in correlation with movement of the displaceable member; an optical sensor having a field of view of at least a portion of the tracking surface during movement of the displaceable member in the operational zone and being operable to generate optical data in response to light received from the tracking surface; and a processing system operable to produce motion measures indicative of movement of the tracking surface from the optical data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A system, comprising:
-
input system means comprising displaceable member means movable in an operational zone and tracking surface means that moves in correlation with movement of the displaceable member means; means for generating optical data in response to light received from a field of view of at least a portion of the tracking surface means during movement of the displaceable member means in the operational zone; and means for producing motion measures indicative of movement of the tracking surface means from the optical data.
-
-
18. A method, comprising:
-
generating optical data in response to light received from a field of view of at least a portion of a tracking surface that moves in correlation with movement of a displaceable member during movement of the displaceable member in an operational zone; and producing motion measures indicative of movement of the tracking surface from the optical data. - View Dependent Claims (19, 20, 21, 22, 23)
-
Specification