A method, system, and apparatus of overlap in successive transfers of video data to minimize memory traffic are disclosed. An engagement collar is mounted on the outer sidewalls of a fluid filter. According to the ice guiding apparatus of the dispenser for the refrigerator, it is capable of preventing interference between an ice discharge opening and an ice container putted at the dispenser and precisely guiding the ice pieces into the ice container. An average value is computed for a training sequence of the corrected samples, where the training sequence has a known DC offset.