Invention Grant
- Patent Title: Mutual capacitance touch sensing device
- Patent Title (中): 互电容式触摸感应装置
-
Application No.: US12498119Application Date: 2009-07-06
-
Publication No.: US08743060B2Publication Date: 2014-06-03
- Inventor: Steven Porter Hotelling
- Applicant: Steven Porter Hotelling
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison & Foerster LLP
- Main IPC: G06F3/041
- IPC: G06F3/041

Abstract:
A mutual capacitive touch sensing device is disclosed. The device can include nodes for sensing a touch at the device and for sensing a force applied to the device. Some nodes can perform both touch and force sensing; while other nodes can perform touch sensing. The device can include distinct individual drive lines for driving the nodes and separate distinct individual sense lines for transmitting touch or force signals from the nodes. The nodes can form groups, where the nodes in each group can be coupled to the same drive line and to different sense lines and where each node in a group can be coupled to a node in a different group by the same sense line. Each node can be set up with a different combination of drive and sense lines coupled thereto. An example device can be a click wheel.
Public/Granted literature
- US20090273573A1 MUTUAL CAPACITANCE TOUCH SENSING DEVICE Public/Granted day:2009-11-05
Information query