MULTI-TOUCH AUTO SCANNING
First Claim
1. An auto-scan logic circuitry connected to a touch panel, the auto-scan logic circuitry comprising:
- a sniff timer that initiates a scan sequence after a sniff time;
a calibration timer that initiates a calibration upon expiration of a calibration time; and
an auto-scan control that controls the activation and resetting of the sniff timer and the calibration timer.
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Accused Products
Abstract
A system and method for autonomously scanning a sensor panel device is disclosed. A sensor panel processor can be disabled after a first predetermined amount of time has elapsed without the sensor panel device sensing any events. One or more system clocks can also be disabled to conserve power. While the processor and one or more system clocks are disabled, the sensor panel device can periodically autonomously scan the sensor panel for touch activity. If one or more results from the autonomous scans exceed a threshold, the sensor panel device re-enables the processor and one or more clocks to actively scan the sensor panel. If the threshold is not exceeded, the sensor panel device continues to periodically autonomously scan the sensor panel without intervention from the processor. The sensor panel device can periodically perform calibration functions to account for any drift that may be present in the system.
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Citations
20 Claims
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1. An auto-scan logic circuitry connected to a touch panel, the auto-scan logic circuitry comprising:
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a sniff timer that initiates a scan sequence after a sniff time; a calibration timer that initiates a calibration upon expiration of a calibration time; and an auto-scan control that controls the activation and resetting of the sniff timer and the calibration timer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An auto-scan logic circuitry connected to a touch panel, the auto-scan logic circuitry comprising:
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means for initiating a scan sequence after a sniff time; means for initiating a calibration upon expiration of a calibration time; and means for controlling the activation and resetting of the sniff timer and the calibration timer. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification