公开(公告)号：US20170277350A1

公开(公告)日：2017-09-28

申请号：US15450823

申请日：2017-03-06

Applicant: SYNAPTICS INCORPORATED

Inventor： Ying WANG ,  Adam L. SCHWARTZ ,  Sanjay MANI

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04105 ,  G06F2203/04108

Abstract: Embodiments described herein include a method for calibrating capacitive force sensors. The method includes measuring a force level at each of a first electrode and a second electrode. The method also includes determining an expected force level at the second electrode based on the measured force level at the first electrode and a force contribution ratio for the second electrode. The method includes determining a difference between the measured force level at the second electrode and the expected force level at the second electrode and adjusting a force weighting factor for the second electrode in response to the difference exceeding a predetermined threshold to create an adjusted force weighting factor. The method also includes adjusting the measured force level at the second electrode.

公开(公告)号：US20180260016A1

公开(公告)日：2018-09-13

申请号：US15456262

申请日：2017-03-10

Applicant: SYNAPTICS INCORPORATED

Inventor： Matthew STEVENSON ,  Sanjay MANI ,  Nickolas V. FOTOPOULOS ,  Derek SOLVEN ,  Shubha RAMAKRISHNAN

IPC: G06F1/32

CPC classification number: G06F1/3287 ,  G06F1/324 ,  G06F1/3296

Abstract: A method and related processing system and input device are disclosed for power consumption optimization using interference measurements. The method comprises applying, within a predefined first low-power operational mode, a first set of values for at least one predefined sensing parameter and corresponding to a first power consumption level; acquiring, within the first low-power operational mode, a first interference measurement using the plurality of sensor electrodes; transitioning, upon determining the first interference measurement exceeds a first interference threshold value, into a predefined high-power operational mode; and applying, within the high-power operational mode, a second set of values for the at least one predefined sensing parameter and corresponding to a second power consumption level greater than the first power consumption level.

公开(公告)号：US20170277293A1

公开(公告)日：2017-09-28

申请号：US15083184

申请日：2016-03-28

Applicant: SYNAPTICS INCORPORATED

Inventor： Yi LING ,  Sanjay MANI

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/0418

Abstract: Embodiments described herein include a method for using multiple filtered images. The method includes acquiring changes of capacitance in a sensing region at a plurality of sensor electrodes in a capacitive sensor. The method also includes generating a capacitive frame based on the changes of capacitance and calculating one or more filtered capacitive frames by modifying the capacitive frame with a spatial filter. The method also includes performing clump detection on the one or more filtered capacitive frames, where clump detection includes detecting locations in each filtered capacitive frame exceeding a first threshold near locations that exceed a second threshold in the corresponding capacitive frame.

公开(公告)号：US20170285857A1

公开(公告)日：2017-10-05

申请号：US15085263

申请日：2016-03-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Chia-Yun KUAN ,  Sanjay MANI

IPC: G06F3/041 ,  G06F3/0488 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/0488

Abstract: Input devices described herein include sensing regions that permit the device to identify a location of input objects along a side of the device. To perform gesture detection, an input device selects baseline signals which are subtracted from capacitive sensing signals captured using the sensor electrodes in the sensing region. Doing so results in delta signals that represent the difference between the capacitive sensing signals and the baseline signals. In one embodiment, the baseline signals are selected from capacitive sensing signals received during previous capacitive frames. In one example, the input device uses the capacitive sensing signals received during the Nth previous capacitive frame as the baseline signals. Alternatively, the input device may determine which frame has capacitive sensing signals that vary the most from the current sensing signals and use that frame as the baseline.

公开(公告)号：US20170277265A1

公开(公告)日：2017-09-28

申请号：US15080135

申请日：2016-03-24

Applicant: SYNAPTICS INCORPORATED

Inventor： Chia-Yun KUAN ,  Sanjay MANI

IPC: G06F3/01 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/017 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/04883 ,  G06F2203/0339 ,  G06F2203/04101 ,  G06F2203/04102 ,  G06F2203/04105

Abstract: Embodiments herein describe an input device that includes a sensing region that permits the device to identify a location of an input object (e.g., a finger) along a side of the device. For example, the sensing region may include sensor electrodes that form a stack with display elements used to display images to the user. By performing capacitive sensing with the sensor electrodes, the input device can identify the location of input objects that are proximate to the side of the sensing region. In one embodiment, the input device includes a finger index for tracking information about input objects disposed at the side of the input device. By tracking the movement of the input objects using the finger index, the input device can determine if the user is performing a tapping or swiping gesture along the side of the input device.