Method and apparatus of controlling a pixel reset level for reducing an image lag in a CMOS sensor

An image CMOS sensor with reduced image lag comprising:

• an imaging device for acquiring image data;
• a reset transistor for resetting the image device;
• a readout transistor for providing pixel information as an output;
• a selection transistor for selecting between imaging devices, wherein image lag is reduced by controlling a reset level;
• and
• an amplifier gain setting for determining whether to use a hard reset or a soft reset.

A CMOS image sensor with reduced image lag comprising:

• an imaging device for acquiring image data;
• a reset transistor for resetting the imaging device;
• a readout transistor for providing pixel information as an output;
• and
• a selection transistor for selecting between imaging devices, wherein image lag is reduced by controlling a reset level which is switchable between a supply voltage and a supply voltage minus a threshold voltage of the reset transistor;
• and
• an amplifier gain setting for determining whether to use a hard reset or a soft reset.