Imagers with error generation capabilities

摘要

A system may include a camera module having error generation circuitry, and processing circuitry that processes image data from the camera module. The processing circuitry may include error detection circuitry that monitors or otherwise processes the image data to verify correct operation of the camera module. To test for correct operation of the error detection circuitry, the processing circuitry may provide a control signal to the camera module that enables error generation and selects a type of fault for the error generation circuitry to emulate. In response to receiving the control signal, the error generation circuitry may emulate the fault at the camera module to produce faulty image data. The error generation circuitry may emulate the fault by modifying control signals at the camera module or modifying the digital image data stream produced by the camera module.

主权项

1. A method of operating an electronic device having an image sensor, the method comprising:
controlling fault generation circuitry at the image sensor to select a fault type and to produce a fault of the selected fault type in image data; with error detection circuitry, processing the image data to identify a fault type; and determining whether the identified fault type matches the selected fault type.