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.