Power management for touch controller
First Claim
1. A method for selectively lowering power consumption of a device comprising:
- determining an operating condition of the device;
selecting one or more components of the device, and for each selected component, selecting from a plurality of values, a value associated with the component of the device, wherein the component and corresponding value selected is based on the determined operating condition of the device;
adjusting the one or more selected components with the corresponding selected value such that less power is consumed during the determined operating condition of the device; and
wherein the operating condition comprises a device component temperature, or a touch signal noise level.
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Accused Products
Abstract
A power management system for a 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.
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Citations
23 Claims
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1. A method for selectively lowering power consumption of a device comprising:
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determining an operating condition of the device; selecting one or more components of the device, and for each selected component, selecting from a plurality of values, a value associated with the component of the device, wherein the component and corresponding value selected is based on the determined operating condition of the device; adjusting the one or more selected components with the corresponding selected value such that less power is consumed during the determined operating condition of the device; and wherein the operating condition comprises a device component temperature, or a touch signal noise level. - View Dependent Claims (2, 3, 4, 5)
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6. A touch controller comprising:
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a plurality of sections configured to process a touch signal, each section having adjustable power; a memory configured to store a plurality of power adjustments corresponding to the sections; and power management logic configured to detect an operating condition of the device, select one or more of the plurality of power adjustments, and apply the selected power adjustments to the corresponding sections in order to process the touch signal at lower power without substantially lower signal quality, wherein the one or more of the plurality of power adjustments selected is based on the detected operating condition of the device, and wherein the operating condition comprises a device component temperature, or a touch signal noise level. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for selectively lowering power consumption of a device comprising:
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determining an operating mode of the device wherein the operating mode has an operating condition comprises a device component temperature, or a touch signal noise level; replacing power requirements of the device in the determined operating mode with lower power requirements dependent on the operating condition of the device; and maintaining the device at the lower power requirements until the operating mode ends. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A touch controller comprising:
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a plurality of operable modes wherein each operating mode has an operating condition comprises at least one of a device component temperature, or a touch signal noise level and wherein each operable mode comprising an active period and an idle period; and power management logic configured to replace a power consumption level for the idle periods with a lower power consumption level at the start of the idle periods based on the operating conditon. - View Dependent Claims (21, 22)
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23. A touch sensitive device comprising:
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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 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 to reduce power, wherein the power consumption data is selectively applied to the device during processing of the touch signals to reduce power according to operable conditions of the device wherein the operating condition comprises a device component temperature, or a touch signal noise level, and the power consumption data is selectively applied to the device during idle periods to reduce power according to the operating conditions of the device.
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Specification