The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2021
Filed:
Nov. 21, 2019
Qualcomm Incorporated, San Diego, CA (US);
Sameer Wadhwa, San Diego, CA (US);
Subbarao Surendra Chakkirala, San Jose, CA (US);
Mowen Yang, Sunnyvale, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Certain aspects of the present disclosure provide techniques for look-ahead column sensing for fast voltage-mode read on ultrasonic sensors. For example, certain aspects are directed to an ultrasonic sensor that generally includes a column line, a pixel having a transistor coupled between a voltage rail and the column line, a receiver circuit, and a first column control circuit coupled between the receiver circuit and the pixel, the first column control circuit being configured to electrically isolate the column line from the receiver circuit during a look-ahead settling phase of the ultrasonic sensor, and electrically couple the column line to the receiver circuit during a sensing phase of the ultrasonic sensor.