Power management for touch controller
First Claim
1. A method for selectively lowering power consumption of a touch controller device comprising:
- determining an operating condition of the touch controller device;
determining a first value of the operating condition of the touch controller device and a second value of the operating condition of the touch controller device, wherein the first value of the operating condition corresponds to a first amount of power consumed for the touch controller device and the second value of the operating condition corresponds to a second amount of power consumed for the touch controller device, the first amount of power being less than the second amount of power; and
selecting one or more components of the touch controller device, and, for each selected one or more components, selecting from a plurality of component values, wherein a first selected component value is associated with a first selected component of the touch controller device, wherein the first selected component and the first selected component value are based on the determined operating condition of the touch controller device;
adjusting the first selected component with the first selected component value so as to correspond to the first amount of power; and
wherein the operating condition comprises a touch signal noise level.
0 Assignments
0 Petitions
Accused Products
Abstract
Power management for a touch controller is disclosed. The touch controller can include a transmit section for transmitting stimulation signals to an associated touch sensor panel to drive the panel, where the touch controller can selectively adjust the transmit section to reduce power during the transmission. The touch controller can also include a receive section for receiving touch signals resulting from the driving of the panel, where the touch controller can selectively adjust the receive section to reduce power during the receipt of the touch signals. The touch controller can also include a demodulation section for demodulating the received touch signals to obtain touch event results, where the touch controller can selectively adjust the demodulation section to reduce power during the demodulation of the touch signals. The touch controller can also selectively reduce power below present low levels during idle periods. The touch controller can be incorporated into a touch sensitive device.
32 Citations
19 Claims
-
1. A method for selectively lowering power consumption of a touch controller device comprising:
-
determining an operating condition of the touch controller device; determining a first value of the operating condition of the touch controller device and a second value of the operating condition of the touch controller device, wherein the first value of the operating condition corresponds to a first amount of power consumed for the touch controller device and the second value of the operating condition corresponds to a second amount of power consumed for the touch controller device, the first amount of power being less than the second amount of power; and selecting one or more components of the touch controller device, and, for each selected one or more components, selecting from a plurality of component values, wherein a first selected component value is associated with a first selected component of the touch controller device, wherein the first selected component and the first selected component value are based on the determined operating condition of the touch controller device; adjusting the first selected component with the first selected component value so as to correspond to the first amount of power; and wherein the operating condition comprises a touch signal noise level. - View Dependent Claims (2, 3, 4)
-
-
5. A touch controller comprising:
-
a plurality of sections configured to process a touch signal, each section having adjustable power including a first amount of power and a second amount of power, the first amount of power being lower than the second amount of power; a memory configured to store a plurality of power adjustments corresponding to the plurality of sections; and power management logic configured to detect an operating condition of the touch controller, select one or more of the plurality of power adjustments, and apply the selected one or more power adjustments to associated one or more sections in order to process the touch signal so as to correspond to the first amount power, wherein the one or more of the plurality of power adjustments selected is based on the detected operating condition of the touch controller, and wherein the operating condition comprises a touch signal noise level. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for selectively adjusting power consumption of a touch controller device comprising:
-
determining an operating mode of the touch controller device wherein the operating mode has an operating condition comprising a touch signal noise level; selecting a power requirement of the touch controller device between a first power requirement and a second power requirement depending on the operating condition of the touch controller device, the first power requirement being lower than the second power requirement; replacing the second power requirement of the touch controller device in the determined operating mode with the first power requirement; and maintaining the touch controller device at the first power requirements until the determined operating mode ends. - View Dependent Claims (14)
-
-
15. A touch controller comprising:
-
a plurality of operating modes, wherein each operating mode has an operating condition comprising a touch signal noise level, and wherein each operating mode comprising an active period and an idle period; and power management logic configured to replace a power consumption level for the idle period, based on the operating condition, from a second power consumption level to a first power consumption level, the first power consumption level being lower than the second power consumption level. - View Dependent Claims (16, 17)
-
-
18. A touch sensitive device comprising:
-
a touch sensor panel configured to sense a touch or near touch and to generate touch signals based on the sensed touch or near touch; and a touch controller configured to manage power consumption of the touch sensitive device, the touch controller comprising a memory configured to store power consumption data, and power management logic configured to selectively apply the power consumption data to the device corresponding to a first power or a second power, the first power being lower than the second power, wherein the power consumption data is selectively applied to the touch sensitive device during processing of the touch signals to apply the power consumption data corresponding to the first power according to an operating condition of the device wherein the operating condition comprises a touch signal noise level. - View Dependent Claims (19)
-
Specification