Invention Grant
- Patent Title: Systems and methods for differential optical position sensing for haptic actuation
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Application No.: US16010258Application Date: 2018-06-15
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Publication No.: US10747321B2Publication Date: 2020-08-18
- Inventor: Doug Billington , Van H. Tran , Kaniyalal Shah , Danny A. Grant , Juan Manuel Cruz-Hernandez
- Applicant: Immersion Corporation
- Applicant Address: US CA San Francisco
- Assignee: Immersion Corporation
- Current Assignee: Immersion Corporation
- Current Assignee Address: US CA San Francisco
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G06F3/01
- IPC: G06F3/01 ; G06F3/042

Abstract:
Systems and methods for differential optical position sensing for a haptic actuator are disclosed. In one embodiment, a system includes: an actuator configured to receive a drive signal and move an object to output a haptic effect; a first sensor configured to monitor a position of the object and output a first position signal; a second sensor configured to monitor the position of the object and output a second position signal different from the first position signal; a circuit configured to receive the first position signal and the second position signal and output a difference signal; and a processor configured to receive the difference signal and output a control signal to the actuator based on the difference signal.
Public/Granted literature
- US20190384398A1 Systems and Methods for Differential Optical Position Sensing for Haptic Actuation Public/Granted day:2019-12-19
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