SYSTEMS AND METHODS FOR DECOUPLING IMAGE GENERATION RATE FROM REPORTING RATE IN CAPACITIVE SENSING
First Claim
1. A processing system for an input device, the processing system comprising:
- a sensor module comprising sensor circuitry configured to;
operate a plurality of capacitive sensor electrodes to generate images of sensor values indicative of objects in a sensing region, each of the images of sensor values generated over a corresponding first period, with a second period between each first period;
a determination module configured to;
determine positional information using the images of sensor values;
report the positional information to a host at a reporting rate determined by a third period, the third period defined to include at least the sum of the first period and the second period; and
a control module configured to;
facilitate setting of the second period to determine the reporting rate.
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Accused Products
Abstract
The embodiments described herein provide devices and methods that facilitate improved input device resistance to the effects of errors that may be caused by the motion of detected objects on such input devices, and in particular, to the effect of blurring and/or fragmenting. The devices and methods provide improved resistance to the effects of such errors by decoupling the image generating interval from the reporting interval. Specifically, the devices and methods enable the determination of the reporting rate independently of the period over which images of sensor values are generated. The devices and methods enable independent determination of the reporting rate by facilitating the setting of a second period, where images of sensor values are generated over a first period and the reporting interval is determined to include at least the sum of the first period and the second period.
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Citations
20 Claims
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1. A processing system for an input device, the processing system comprising:
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a sensor module comprising sensor circuitry configured to; operate a plurality of capacitive sensor electrodes to generate images of sensor values indicative of objects in a sensing region, each of the images of sensor values generated over a corresponding first period, with a second period between each first period; a determination module configured to; determine positional information using the images of sensor values; report the positional information to a host at a reporting rate determined by a third period, the third period defined to include at least the sum of the first period and the second period; and a control module configured to; facilitate setting of the second period to determine the reporting rate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An input device comprising:
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a plurality of capacitive sensor electrodes; a processing system operatively coupled to the plurality of capacitive sensor electrodes, the processing system configured to; operate the plurality of capacitive sensor electrodes to generate images of sensor values indicative of objects in a sensing region proximate to an input surface, each of the images of sensor values generated over a corresponding first period, with a second period between each first period; determine positional information using the images of sensor values; report the positional information to a host at a reporting rate determined by a third period, the third period defined to include at least the sum of the first period and the second period; and facilitate setting of the second period to determine the reporting rate. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of determining input in an input device, the method comprising:
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operating a plurality of capacitive sensor electrodes to generate images of sensor values indicative of objects in a sensing region, each of the images of sensor values generated over a corresponding first period, with a second period between each first period; determining positional information using the images of sensor values; reporting the positional information to a host at a reporting rate determined by a third period, the third period defined to include at least the sum of the first period and the second period; and setting of the second period to determine the reporting rate. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An input device comprising:
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an input surface; a plurality of transmitter electrodes proximate to the input surface a plurality of receiver electrodes proximate to the input surface; and a processing system operatively coupled to the plurality of transmitter electrodes and to the plurality of receiver electrodes, the processing system configured to; simultaneously transmit a plurality of transmitter signals with a plurality of transmitter electrodes; and simultaneously receive a plurality of resulting signals with the plurality of receiver electrodes in the plurality of receiver electrodes, wherein each of the resulting signals comprises effects corresponding to at least one of the plurality of simultaneously transmitted transmitter signals; and generate images of sensor values indicative of objects in a sensing region proximate to the input surface using the plurality of resulting signals, each of the images of sensor values generated over a corresponding first period with a second period between each first period; determine positional information using the images of sensor values; report the positional information to a host at a reporting rate determined by a third period, the third period defined to include at least the sum of the first period and the second period; facilitate selection of the first period and the second period by the host to provide independent control of the first period and the reporting rate to the host.
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Specification