Patent ID: 6954232
Filing Date: 2005-10-11
Classification: H04N

Abstract:
1. A method for controlling a charge-coupled device (CCD) sensing module, the CCD sensing module comprising a plurality of photosensors, a CCD shift register unit, and a charge receiving unit, wherein the photosensors are divided into two sets of photosensors, including a first set of photosensors and a second set of photosensors, and are used for converting optical signals into signal charges and outputting the signal charges, in parallel, to the CCD shift register unit, the method comprising the steps of: exposing the first set of photosensors and the second set of photosensors, and storing a plurality of first signal charges obtained from the first set of photosensors and a plurality of second signal charges obtained from the second set of photosensors into the CCD shift register unit; sequentially shifting the first signal charges under the control of a plurality of first clock pulses and the second signal charges under the control of a plurality of second clock pulses from the CCD shift register unit to the charge receiving unit, and acquiring an image signal corresponding to the first signal charges, wherein the first clock pulses and the second clock pulses are applied to the CCD sensing module alternatively, a period of the second clock pulse is smaller than a period of the first clock pulses, and a first reset pulse is applied before each of the first clock pulses and the second clock pulses is applied to reset the charge receiving unit; exposing the first set of photosensors and the second set of photosensors, and storing a plurality of third signal charges obtained from the first set of photosensors and a plurality of fourth signal charges obtained from the second set of photosensors into the CCD shift register unit; and sequentially shifting the third signal charges under the control of a plurality of third clock pulses and the fourth signal charges under the control of a plurality of fourth clock pulses from the CCD shift register unit to the charge receiving unit and acquiring an image signal corresponding to the fourth signal charges, wherein the third clock pulses and the fourth clock pulses are applied to the CCD sensing module alternatively, a period of the third clock pulse is smaller than a period of the fourth clock pulses, and a second reset pulse is applied before each of the third clock pulses and the fourth clock pulses is applied to reset the charge receiving unit.