Abstract: An optical navigation device, such as an optical navigation joystick or mouse, includes an internal redirector which may be separate or formed from material of a touch surface of the optical device. The redirector is disposed at an angle with respect to a plane of the touch surface, operative to reflect light which would otherwise strike the touch surface at a low angle and be internally reflected. The light may be reflected in a direction away from a light sensor of the device, reducing sensed internally reflected light, or may be reflected into the touch surface at a higher angle, potentially increasing a quantity of good signal. The redirector may also include portions which block light directly emitted from a light emitter, or reflected off other surfaces of the navigation device.

Abstract: An optical navigation device, such as an optical navigation joystick or mouse, includes an internal redirector which may be separate or formed from material of a touch surface of the optical device. The redirector is disposed at an angle with respect to a plane of the touch surface, operative to reflect light which would otherwise strike the touch surface at a low angle and be internally reflected. The light may be reflected in a direction away from a light sensor of the device, reducing sensed internally reflected light, or may be reflected into the touch surface at a higher angle, potentially increasing a quantity of good signal. The redirector may also include portions which block light directly emitted from a light emitter, or reflected off other surfaces of the navigation device.

Abstract: An apparatus, and an associated method, tests for an anomaly, such as an open circuit or a short circuit, at a touch sensing device. An electrical characteristic sensor senses an electrical characteristic at an electrode of the touch sensing device. Responsive to the sensed electrical characteristic, a determination is made by a determiner as to whether a short or open circuit or other anomaly exists at the touch sensing device.

Abstract: A method includes detecting a touch at a touch location on a touch-sensitive display, identifying a delay associated with the touch location, and when a force value related to the touch meets a first threshold value, providing a first tactile feedback after waiting the delay.