| 摘要 |
An image sensor includes a pixel array having a plurality of unit pixels with high light sensitivity, for sensing information about image received from an exterior; a control and interface unit for controlling an overall operation of an image sensor chip and acting as an interface with an external system; an analog signal processing unit for processing an analog signal from the pixel array after being controlled by the control and the interface unit; an A/D converter for converting the analog signal into a digital signal; a picture signal processing unit for performing a plurality of image processes in order to enhance image of the digital signal, wherein the picture signal processing unit includes a focus value calculator for calculating a focus value from the digital signal; and an interface unit for providing an exterior with the focus value calculated through the focus value calculator.
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