Invention Grant
- Patent Title: Single-chip multi-stimulus sensor controller
- Patent Title (中): 单片多刺激传感器控制器
-
Application No.: US14056841Application Date: 2013-10-17
-
Publication No.: US09069408B2Publication Date: 2015-06-30
- Inventor: Steve Porter Hotelling , Christoph Horst Krah , Marduke Yousefpor , Thomas James Wilson
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison & Foerster LLP
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/041 ; G06F3/044

Abstract:
A multi-stimulus controller for a multi-touch sensor is formed on a single integrated circuit (single-chip). The multi-stimulus controller includes a transmit oscillator, a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator, a plurality of transmit channels that transmit the drive signals simultaneously to drive the multi-touch sensor, a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor, a receive oscillator, and a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results, the demodulation section including a demodulator and a vector operator.
Public/Granted literature
- US20140043293A1 SINGLE-CHIP MULTI-STIMULUS SENSOR CONTROLLER Public/Granted day:2014-02-13
Information query