Image signal processor, electronic device including image signal processor, and associated methods

An image signal processor that generates a display signal, the image signal processor:

• receiving an input image signal having a first pedestal level from an image sensor;
• extending the input image signal from m bits to n bits;
• and
• generating a first signal from the input image signal, the first signal including a second pedestal level, the second pedestal level being different from the first pedestal level and being determined in accordance with the first pedestal level and a processing gain of the image signal processor.

An electronic device, comprising:

• an image sensor to generate an image signal having a first pedestal level added thereto;
• an image signal processor that generates a display signal from the image signal;
• and
• a controller to control operations of the image sensor and the image signal processor,
• wherein the image signal processor generates, based on the image signal, a first signal having a second pedestal level, different from the first pedestal level, added thereto, the second pedestal level being determined in accordance with the first pedestal level and a processing gain of the image signal processor.