Patent ID: 7821566

Claim:
A camera system in which an image sensor chip and a driving chip are integrated as a system on chip (SOC), the image sensor chip comprising: a pixel array having a plurality of unit pixels with high light sensitivity, wherein the pixel array is configured to sense image information received from an exterior; a control and interface unit configured to control an overall operation of the image sensor chip and act as an interface with an external system; an analog signal processing unit configured to process an analog signal from the pixel array; an analog-to-digital (A/D) converter configured to convert the analog image signal into a digital image signal; a picture signal processing unit configured to perform a plurality of image processes including color adjustment in order to enhance the digital image signal, wherein the picture signal processing unit includes a focus value calculator configured to calculate a focus value from the digital image signal and output the focus value; and an interface configured to transfer the focus value to the driving chip.