Patent · US Active

Drive scheme for ultrasonic transducer pixel readout

US10503309B2 · kind B2 · utility

1Cited by

1References

15Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventor

Ashish Hinger · Sunnyvale, US

Key dates

Filing date	Mar 30, 2017
Grant date	Dec 10, 2019
Priority date	—
Expiry date	Jul 27, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04R17/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

This disclosure provides some implementations of systems, methods and apparatus associated with a drive scheme for ultrasonic transducer pixel readout. In some implementations, a piezoelectric ultrasonic transducer has a first electrode, a second electrode, and a piezoelectric layer disposed between the first and second electrodes. The second electrode is coupled with a sampling node. A sampling diode has an input and an output. The input is coupled to receive a diode bias signal. The output is coupled with the sampling node. Controller circuitry is configured to control the diode bias signal to at least partially drive a voltage at the sampling node. Read circuitry is coupled with the sampling node to read the voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.