IMAGE SENSOR, IMAGE PROCESSING SYSTEM INCLUDING THE SAME, AND METHOD OF OPERATING THE SAME
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Abstract
An image sensor includes a photo gate controller configured to generate a plurality of demodulated signals respectively corresponding to a plurality of rows of a pixel array and a photo gate driver configured to adjust a phase of the demodulated signals using a source clock signal to remove power, voltage and temperature (PVT) noise and to apply the phase-adjusted demodulated signals to the pixel array. The image sensor matches the phases of the respective demodulated signals using the source clock signal generated based on a reference clock signal, thereby increasing the quality of depth images.
26 Citations
20 Claims
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1-5. -5. (canceled)
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6. An image sensor comprising:
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a photo gate controller configured to generate a plurality of demodulated signals respectively corresponding to a plurality of rows of a pixel array; and a photo gate driver configured to adjust a phase of the demodulated signals using a source clock signal to remove power, voltage and temperature (PVT) noise and to apply the phase-adjusted demodulated signals to the pixel array. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An image processing system comprising:
an image sensor including, a pixel array including rows of pixels and configured to produce image data, a timing generator configured to generate a plurality of gate control signals based on a reference clock, each gate control signal corresponding to one of the rows of the pixel array, and a gate driver configured to generate matched gate control signals by changing the phases of the plurality of gate control signals such that the generated matched gate control signals have a desired phase, the gate driver configured to apply the generated matched gate control signals to the pixel array of the image sensor. - View Dependent Claims (17, 18, 19, 20)
Specification