Low power navigation devices, systems and methods
View Patent ↗A system and method are disclosed for conserving power during navigation, e.g., user device pointer/cursor navigation, using a fingerprint image sensor, that may comprise processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode; processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode.
1. A method for conserving power during navigation using a fingerprint image sensor, comprising:
processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode;
processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and
transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode;
wherein the second navigation is indicated by the finger being detected to be steadily in contact with the linger sensor surface and/or the sensed fingerprint image data being substantially redundant.
2. The method of claim 1 , wherein the first navigation mode is indicated by the finger being detected to be alternately in contact with and not in contact with the finger sensor surface.
3. The method of claim 1 , wherein the first navigation mode is indicated by the sensed fingerprint image data being substantially non-redundant.
4. The method of claim 1 , wherein the first navigation mode is indicated by the finger being detected to be alternately in contact with and not in contact with the finger sensor surface and the sensed fingerprint image data being substantially non-redundant.
5. The method of claim 1 , wherein the second navigation mode is indicated by the finger being detected to be steadily in contact with the finger sensor surface.
6. The method of claim 1 , wherein the second navigation mode is indicated by the sensed fingerprint image data being substantially redundant.
7. The method of claim 1 , wherein the first navigation mode is indicated by the finger being detected to be steadily contact with the finger sensor surface and the sensed fingerprint image data being substantially redundant.
8. The method of claim 1 , further comprising:
periodically energizing, via the computing device, the fingerprint image sensor, during a period of time the fingerprint image sensor is determined to be in the first navigation mode, to detect a transition of the finger position from a first position relative to the fingerprint image sensor surface to a second position relative to the fingerprint image sensor surface; and
determining, via the computing device, that fingerprint image sensor data received from the energized fingerprint image sensor is indicative of lateral motion of a finger being sensed in relation to the fingerprint image sensor surface.
9. The method of claim 1 , further comprising:
periodically energizing, via the computing device, the fingerprint image sensor, during the a period of time the fingerprint image sensor is determined to be in the second navigation mode, to detect fingerprint image sensor data indicative of no lateral motion of a finger being sensed in relation to the fingerprint image sensor surface.
10. A fingerprint image sensor, comprising:
a computing device, configured to:
process fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode;
process fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and
transition the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode;
wherein the second navigation mode is indicated by the finger being detected to be steadily in contact with the finger sensor surface and/or the sensed fingerprint image data being substantially redundant.
11. The fingerprint image sensor of claim 10 , wherein the first navigation mode is indicated by the finger being detected to be alternately in contact with and not in contact with the fingerprint image sensor surface.
12. The fingerprint image sensor of claim 10 , wherein the first navigation mode is indicated by the sensed fingerprint image data being substantially non-redundant.
13. The fingerprint image sensor of claim 10 , wherein the first navigation mode is indicated by the finger being detected to be alternately in contact with and not in contact with the fingerprint image sensor surface and the sensed fingerprint image data being substantially non-redundant.
14. The fingerprint image sensor of claim 10 , wherein the second navigation mode is indicated by the finger being detected to be steadily in contact with the finger sensor surface.
15. The fingerprint image sensor of claim 10 , wherein the second navigation mode is indicated by the sensed fingerprint image data being substantially redundant.
16. The fingerprint image sensor of claim 10 , wherein the first navigation mode is indicated by the finger being detected to be steadily in contact with the finger sensor surface and the sensed fingerprint image data being substantially redundant.
17. The fingerprint image sensor of claim 10 , wherein the computing device is further configured to:
periodically energize the fingerprint image sensor, during a period of time the fingerprint image sensor is determined to be in the first navigation mode, to detect a transition of the finger position from a first position relative to the fingerprint image sensor surface to a second position relative to the fingerprint image sensor surface; and
determine that fingerprint image sensor data received from the energized fingerprint image sensor is indicative of lateral motion of a finger being sensed in relation to the fingerprint image sensor surface.
18. The fingerprint image sensor of claim 10 , wherein the computing device is further configured to:
periodically energize the fingerprint image sensor, during the a period of time the fingerprint image sensor is determined to be in the second navigation mode, to detect fingerprint image sensor data indicative of no lateral motion of a finger being sensed in relation to the fingerprint image sensor surface.
19. A non-transitory computer readable medium storing instructions that, when executed by a computing device, cause the computing device to perform a method for conserving power during navigation using a fingerprint image sensor, the method comprising:
processing, via a computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a first finger navigation mode;
processing, via the computing device, fingerprint image sensor data indicative of finger position and movement with respect to a fingerprint image sensor surface in a finger navigation mode to determine if the finger is in a second finger navigation mode; and
transitioning, via the computing device, the fingerprint image sensor from a first power consumption mode to a second power consumption mode, based on detecting a transition from the first finger navigation mode to the second finger navigation mode;
wherein the second navigation mode is indicated by the finger being detected to be steadily in contact with the finger sensor surface and/or the sensed fingerprint image data being substantially redundant.
20. The non-transitory computer readable medium according to claim 19 , wherein the method further comprises:
periodically energizing, via the computing device, the fingerprint image sensor, during a period of time the fingerprint image sensor is determined to be in the first navigation mode, to detect a transition of the finger position from a first position relative to the fingerprint image sensor surface to a second position relative to the fingerprint image sensor surface; and
determining, via the computing device, that fingerprint image sensor data received from the energized fingerprint image sensor is indicative of lateral motion of a finger being sensed in relation to the fingerprint image sensor surface.