Ultrasonic sensor array control to facilitate screen protectors

US11703578B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Yipeng Lu · Davis, US
• Hrishikesh Vijaykumar Panchawagh · Rochester, US
• Jessica Liu Strohmann · Cupertino, US
• Kostadin Dimitrov Djordjev · Los Gatos, US

Key dates

• Filing date: May 13, 2022
• Grant date: Jul 18, 2023
• Expiry date: May 13, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F3/044
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.