Invention Grant
- Patent Title: Factory and user calibration of haptic systems
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Application No.: US16846468Application Date: 2020-04-13
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Publication No.: US11610459B2Publication Date: 2023-03-21
- Inventor: Jianxun Wang , Debanjan Mukherjee
- Applicant: Google LLC
- Applicant Address: US CA Mountain View
- Assignee: Google LLC
- Current Assignee: Google LLC
- Current Assignee Address: US CA Mountain View
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: G08B6/00
- IPC: G08B6/00

Abstract:
Methods and systems for calibrating a haptic system in an electronic device are provided. The calibration of the haptic system may be performed in a facility prior to a shipment to a user. The calibration may also be performed by a user prior to or after his/her use of the haptic system in the electronic device over time. A method for performing a calibration process in an electronic device includes generating a drive signal from a haptic driver in a haptic system disposed in an electronic device, transmitting the drive signal to an actuator in the haptic system, detecting a back Electromotive Force (bEMF) signal from the actuator in the haptic system, analyzing an output waveform from the bEMF signal, and adjusting a scale of the drive signal generated from the haptic driver.
Public/Granted literature
- US20210319677A1 FACTORY AND USER CALIBRATION OF HAPTIC SYSTEMS Public/Granted day:2021-10-14
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