INTERFERENCE SENSING WITHIN A DISPLAY DEVICE WITH AN INTEGRATED SENSING DEVICE
First Claim
1. A processing system for a display device with an integrated capacitive sensing device comprising:
- a driver module configured to be communicatively coupled to a plurality of common electrodes configured for capacitive sensing and display updating, the plurality of common electrodes comprising a first set of common electrodes and a second set of common electrodes, the first set of the common electrodes including at least one common electrode included in the second set of the common electrodes and at least one common electrode not included in the second set of the common electrodes, the driver module configured for;
driving the plurality of common electrodes for display updating during a first display frame;
driving the first set of common electrodes for capacitive sensing during a first portion of the first display frame; and
operating the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the first display frame;
a receiver module configured to be communicatively coupled to the plurality of receiver electrodes, the receiver module configured for;
receiving first resulting signals during the first portion of the first display frame; and
receiving second resulting signals during the second portion of the first display frame; and
a determination module configured for determining at least portion of a first capacitive frame based on the first resulting signals and an interference measurement corresponding to the first capacitive frame based on the second resulting signals.
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Accused Products
Abstract
Embodiments of the present invention generally provide a method and system for sensing interference in a display device having integrated input sensing. In various embodiments of the invention, input sensing performed on one or more rows of common electrodes may be operated for interference sensing, and, during the blanking period, some or all of the common electrodes may be operated for interference sensing. Interference measurements acquired during blanking periods may be used to increase the accuracy with which input sensing is performed, for example, by establishing one or more baseline interference values and/or determining that one or more common electrodes should be driven at a different frequency. In some embodiments, all of the common electrodes may be operated for interference sensing during a blanking period, while in other embodiments a portion of the common electrodes (e.g., one-third, one-half, etc.) may be operated for interference sensing during a blanking period.
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Citations
20 Claims
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1. A processing system for a display device with an integrated capacitive sensing device comprising:
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a driver module configured to be communicatively coupled to a plurality of common electrodes configured for capacitive sensing and display updating, the plurality of common electrodes comprising a first set of common electrodes and a second set of common electrodes, the first set of the common electrodes including at least one common electrode included in the second set of the common electrodes and at least one common electrode not included in the second set of the common electrodes, the driver module configured for; driving the plurality of common electrodes for display updating during a first display frame; driving the first set of common electrodes for capacitive sensing during a first portion of the first display frame; and operating the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the first display frame; a receiver module configured to be communicatively coupled to the plurality of receiver electrodes, the receiver module configured for; receiving first resulting signals during the first portion of the first display frame; and receiving second resulting signals during the second portion of the first display frame; and a determination module configured for determining at least portion of a first capacitive frame based on the first resulting signals and an interference measurement corresponding to the first capacitive frame based on the second resulting signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display device with an integrated capacitive sensing device comprising:
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a plurality of common electrodes configured for capacitive sensing and display updating, the plurality of common electrodes comprising a first set of common electrodes and a second set of common electrodes, the first set of the common electrodes including at least one common electrode included in the second set of the common electrodes and at least one common electrode not included in the second set of the common electrodes; a driver module configured to be communicatively coupled to the plurality of common electrodes and configured to; drive the plurality of common electrodes for display updating during a first display frame and during a second display frame; drive the first set of common electrodes for capacitive sensing during a first portion of the first display frame; operate the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the first display frame; drive the second set of common electrodes for capacitive sensing during a first portion of the second display frame; and operate the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the second display frame; a plurality of receiver electrodes; a receiver module configured to be communicatively coupled to the plurality of receiver electrodes and configured to; receive first resulting signals during the first portion of the first display frame, second resulting signals during the second portion of the first display frame, third resulting signals during the first portion of the second display frame, and fourth resulting signals during the second portion of the second display frame with the plurality of receiver electrodes; and a determination module configured to determine at least portion of a first capacitive frame based on the first resulting signals and an interference measurement corresponding to the first capacitive frame based on the second resulting signals. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of capacitive sensing in a display device having a plurality of common electrodes configured for capacitive sensing and display updating, the plurality of common electrodes comprising a first set of common electrodes and a second set of common electrodes, the first set of the common electrodes including at least one common electrode included in the second set of the common electrodes and at least one common electrode not included in the second set of the common electrodes, the method comprising:
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driving the plurality of common electrodes for display updating during a first display frame and during a second display frame; driving the first set of common electrodes for capacitive sensing during a first portion of the first display frame; operating the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the first display frame; driving the second set of common electrodes for capacitive sensing during a first portion of the second display frame; operating the plurality of common electrodes in a substantially non-modulating manner for interference sensing during a second portion of the second display frame; receiving first resulting signals during the first portion of the first display frame; receiving second resulting signals during the second portion of the first display frame; receiving third resulting signals during the first portion of the second display frame; receiving fourth resulting signals during the second portion of the second display frame; and determining at least portion of a first capacitive frame based on the first resulting signals and an interference measurement corresponding to the first capacitive frame based on the second resulting signals. - View Dependent Claims (17, 18, 19, 20)
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Specification