CMOS active pixel sensor type imaging system on a chip

A single chip camera device, comprising:

• a substrate, having integrated thereon an image acquisition portion and a control portion, both of which are formed using a logic family that is compatible with CMOS;
• said image acquisition portion integrated in said substrate including an array of photoreceptors;
• said control portion integrated in said substrate including a signal controlling device, controlling said photoreceptors to output their signals,
• said control portion also including, integrated in said substrate, a timing circuit integrated within the same substrate that houses the array of photoreceptors, controlling a timing of operation of said array of photoreceptors to read at least one element of the array by first reading a reset level of said at least one element, and subsequently, after an integration time, second reading a charged level of said at least one photoreceptor, said reading and said second reading producing output signals based on both said charged level and said reset level.