ELECTRONIC DEVICE INCLUDING TOUCH-SENSITIVE DISPLAY
First Claim
Patent Images
1. A method comprising:
- beginning a scan of a touch-sensitive display, the scan including a plurality of frames in which drive electrodes are driven while signals are received from sense electrodes such that a respective drive electrode is driven in each frame while signals are received from the sense electrodes;
in response to detecting a touch during the scan of the touch-sensitive display and prior to completion of the scan;
determining a length of time until a next display update; and
decreasing a time of remaining frames of the scan to complete the scan and report the scan prior to a time of a next display update of the touch-sensitive display,wherein each first frame of the scan completed prior to detecting the touch is completed in a first length of time and each second frame of the scan completed after detecting the touch is completed in a second length of time that is less than the first length of time.
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Abstract
A method includes detecting a touch on a touch-sensitive display, determining a time of a display update of the touch-sensitive display, and adjusting a scanning rate of scanning electrodes of the touch-sensitive display based on the time of the display update.
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Citations
16 Claims
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1. A method comprising:
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beginning a scan of a touch-sensitive display, the scan including a plurality of frames in which drive electrodes are driven while signals are received from sense electrodes such that a respective drive electrode is driven in each frame while signals are received from the sense electrodes; in response to detecting a touch during the scan of the touch-sensitive display and prior to completion of the scan; determining a length of time until a next display update; and decreasing a time of remaining frames of the scan to complete the scan and report the scan prior to a time of a next display update of the touch-sensitive display, wherein each first frame of the scan completed prior to detecting the touch is completed in a first length of time and each second frame of the scan completed after detecting the touch is completed in a second length of time that is less than the first length of time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory computer-readable medium having computer-readable code executable by at least one processor of a portable electronic device to:
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begin a scan of a touch-sensitive display, the scan including a plurality of frames in which drive electrodes are driven while signals are received from sense electrodes such that a respective drive electrode is driven in each frame while signals are received from the sense electrodes; in response to detecting a touch during the scan of the touch-sensitive display and prior to completion of the scan; determine a length of time until a next display update; and decrease a time of remaining frames of the scan to complete the scan and report the scan prior to a time of a next display update of the touch-sensitive display, wherein each first frame of the scan completed prior to detecting the touch is completed in a first length of time and each second frame of the scan completed after detecting the touch is completed in a second length of time that is less than the first length of time.
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9. An electronic device comprising:
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a touch-sensitive display; a controller coupled to the touch-sensitive display and configured to; begin a scan of a touch-sensitive display, the scan including a plurality of frames in which drive electrodes are driven while signals are received from sense electrodes such that a respective drive electrode is driven in each frame while signals are received from the sense electrodes; in response to detecting a touch during the scan of the touch-sensitive display and prior to completion of the scan; determine a length of time until a next display update; and decrease a time of remaining frames of the scan to complete the scan and report the scan prior to a time of a next display update of the touch-sensitive display, wherein each first frame of the scan completed prior to detecting the touch is completed in a first length of time and each second frame of the scan completed after detecting the touch is completed in a second length of time that is less than the first length of time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification