Patent ID: 8648945

Claim:
An image sensor comprising: a clock signal generator configured to generate and output at least first through fourth clock signals; a plurality of pixels configured to generate associated distance signals based on corresponding clock signals from among the at least first through fourth clock signals and light reflected by an object; and a distance information deciding unit configured to determine distance information with respect to the object by using the associated distance signals, wherein at least one first pixel from among the plurality of pixels is configured to generate the associated distance signal based on at least the first clock signal and the third clock signal, at least one second pixel from among the plurality of pixels, which is adjacent to the at least one first pixel, is configured to generate the associated distance signal based on at least the second clock signal and the fourth clock signal, and the clock signal generator is configured to generate the second clock signal having a phase difference with a period, the phase difference of the second clock signal being one-fourth (¼) of that of the phase difference of the first clock signal, the third clock signal having a phase difference with a period, the phase difference of the third clock signal being a half (½) of that of the phase difference of the first clock signal, and the fourth clock signal having a phase difference with a period, the phase difference of the fourth clock signal being a half (½) of that of the phase difference of the second clock signal.