Method and device for testing an image sensor and motor vehicle

A device for testing an image sensor having (i) regular pixels and test pixels, of which each is interconnected with one of two predefined voltage values, and (ii) a signal processing unit for providing digital signal values for output voltages of the pixels and test pixels, the device comprising:

• an electronic data processing device interface for receiving digital signal values of the test pixels;
• and
• a control unit including a processor configured to use the signal values of at least one subset of the test pixels for testing the image sensor, wherein all test pixels of the at least one subset are interconnected with a first of the two voltage values, and wherein:
• the test pixels are arranged in rows and columns and interconnected in blocks;
• test pixels within one block are identically interconnected;
• test pixels within adjoining blocks are differently interconnected;
• and
• the signal values of the at least one subset used to test the image sensor include one of:
• (i) all test pixels from one row interconnected with the first voltage value, (ii) all test pixels from one column interconnected with the first voltage value, (iii) all test pixels from one block interconnected with the first voltage value, or (iv) all test pixels from all blocks which are interconnected with the first voltage value.

A vehicle image sensor system, comprising:

• an image sensor having regular pixels and test pixels, of which each is interconnected with one of two predefined voltage values;
• a signal processing unit for providing digital signal values for output voltages of the pixels and test pixels;
• and
• a test device for testing the image sensor, wherein the test device is connected to the image sensor to receive the digital signal values of the test pixels of the subset, the test device is configured to use the signal values of at least one subset of the test pixels for testing the image sensor, and all test pixels of the at least one subset are interconnected with a first of the two voltage values, and wherein:
• the test pixels are arranged in rows and columns and interconnected in blocks;
• test pixels within one block are identically interconnected;
• test pixels within adjoining blocks are differently interconnected;
• and
• the signal values of the at least one subset used to test the image sensor include one of:
• (i) all test pixels from one row interconnected with the first voltage value, (ii) all test pixels from one column interconnected with the first voltage value, (iii) all test pixels from one block interconnected with the first voltage value, or (iv) all test pixels from all blocks which are interconnected with the first voltage value.