公开(公告)号：US20220247946A1

公开(公告)日：2022-08-04

申请号：US17575070

申请日：2022-01-13

Applicant: STMicroelectronics (Grenoble 2) SAS

Inventor： Jerome CHOSSAT ,  Mathieu THIVIN

IPC: H04N5/367 ,  H04N5/3745

Abstract: An electronic device includes a first array of image pixels having inputs coupled to first selection tracks and outputs coupled to first output tracks, a second array of test pixels having inputs coupled to second selection tracks and outputs coupled to the first output tracks, and a third array of test pixels having inputs coupled to the first selection tracks and outputs coupled to second output tracks. A processor is coupled to receive output signals on the first and second output tracks. The output signals from the test pixels of the second and third arrays are fixed at one or the other of only two values in the absence of a defect. The output signals received by the processor over the first and second output tracks are processed to determine presence or absence of a defect.

公开(公告)号：US20200014914A1

公开(公告)日：2020-01-09

申请号：US16502483

申请日：2019-07-03

Applicant: STMicroelectronics (Grenoble 2) SAS ,  STMicroelectronics Asia Pacific Pte Ltd

Inventor： Lookah CHUA ,  Jansen Reyes DUEY ,  Tarek LULE ,  Mathieu THIVIN

IPC: H04N17/00 ,  H04N5/369 ,  H04N5/3745

Abstract: An electronic device includes an array of image pixels, with the array of image pixels having inputs coupled to control lines and outputs coupled to output lines, and at least one array of dummy pixels, with the at least one array of dummy pixels having inputs coupled to the control lines. Each dummy pixel of the at least one array of dummy pixels is configured to provide a certain output signal in an absence of a fault with at least one of the control lines or of a fault with at least one of the output lines, such that a lack of output of the certain output signal by one or more of the dummy pixels of the at least one array of dummy pixels indicates the fault.