Channel scan logic
AssigneeApple Inc.
InventorsMinh-Dieu Thi VU, Thomas James WILSON, Christoph H. KRAH
Life of this patent
Estimating the term…
Abstract
A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.
Claims20
(canceled)
A method for scanning a touch sensor panel, comprising:
- autonomously scanning the touch sensor panel free of intervention from an enabled processor, and storing scan data in a first memory free of intervention from the enabled processor;
- transmitting the scan data from the first memory to the enabled processor;
- and
- processing the scan data using the enabled processor.
An apparatus for scanning a touch sensor panel, comprising:
- a first memory;
- a processor capable of being enabled;
- and
- scan logic communicatively couplable to the touch sensor panel and coupled to the first memory and the processor, the scan logic configured for, while the processor is enabled,
- autonomously scanning the touch sensor panel free of intervention from the enabled processor, and
- storing scan data in the first memory free of intervention from the enabled processor, and
- transmitting the scan data from the first memory to the enabled processor.
Dependencies are inferred from the claim text.