Efficient detection of human machine interface interaction using a resonant phase sensing system

US11016572B2 · kind B2 · utility

Assignee

• CIRRUS LOGIC, INC. · US

Inventors

• Srdjan Marijanovic · Austin, US
• Drew Kinney · Austin, US
• Luke Lapointe · Austin, US
• Siddharth Maru · Austin, US
• Tejasvi Das · Austin, US
• Anthony S. Doy · Los Gatos, US
• Zhong You · Felton, GB

Key dates

• Filing date: May 15, 2020
• Grant date: May 25, 2021
• Expiry date: May 15, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F3/045
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A system may include a tactile actuator for providing tactile feedback and a resonant phase sensing system. The resonant phase sensing system may include a resistive-inductive-capacitive sensor and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and the tactile actuator. The resistive-inductive-capacitive sensor may be configured to measure phase information associated with the resistive-inductive-capacitive sensor, based on the phase information, detect an indication of human interaction with the system proximate to the resistive-inductive-capacitive sensor, and trigger the tactile actuator to generate tactile feedback responsive to detecting the indication of human interaction.