Abstract: Disclosed herein are operation methods of a memory controller which controls a memory device. The method includes storing write data in a first area of the memory device, extracting first error position information indicating a position of at least one error included in data stored in the first area, storing the first error position information in a second area of the memory device, reading read data from the first area of the memory device, reading the first error position information from the second area of the memory device, refining the read data based on the first error position information to generate refined data, performing soft decision decoding based on the refined data to generate corrected data, and outputting the corrected data.

Abstract: A refrigerator having a water storage vessel detachably mounted thereto, in which a supply passage configured to connect the water storage vessel, the ice making apparatus and the dispenser to supply the water in the water storage vessel to the ice making apparatus and the dispenser sage, a first check valve and a second check valve installed at a front position and a rear position of the one point of a first sub passage, to prevent water flowing backward to the water storage vessel, a third check valve and a fourth check valve installed at a front position and a rear position of the one point of a second sub passage, to prevent water flowing backward to the water storage vessel, and a pump installed at the third sub passage and configured to rotate the clockwise direction and the counter clockwise direction.