US Patent 8426793 Vision sensor

A vision sensor capable of generating an array of photoreceptor signals based on a visual field is provided. The vision sensor comprises an array of field circuits. Each field circuit comprises an array of pixel circuits capable of generating an array of potentials based on a visual field and a sample signal, and a control circuit capable of generating the sample signal based on the array of potentials. Each field circuit is also capable of generating an array of photoreceptor signals based on the array of potentials.