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:
Sep. 06, 2022
Filed:
Dec. 02, 2019
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Anirudh Oberoi, Bangalore, IN;
Gurvinder Singh, Bangalore, IN;
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
An image sensor may include an array of imaging pixels and verification circuitry. Row control circuitry including row drivers may provide control signals to the pixels in the array of imaging pixels. The verification circuitry may test proper operation of the row drivers. The verification circuitry be configured to pre-charge the first and second storage capacitors to a first bias voltage, intentionally discharge the first and second storage capacitors to a second bias voltage, reset only the first storage capacitor back to the first bias voltage, and use a first sample from the first storage capacitor and a second sample from the second storage capacitor to test operation of the row driver. If the row driver is operating correctly, a voltage swing will be detected between the two samples. If the row driver is stuck high or stuck low, the first and second samples may be the same.