The disclosure is directed to a cyclone dust collector for separating air from dusts by way of a centrifugal force and, more particularly, to a novel canister type vacuum cleaner capable of using a dual cyclone dust collector with maximized allowable dust capacity. The outer sleeve is dimensioned to contain the resilient band, and includes two insulating, ear-receiving portions as well as a first opening through which the resilient band can be inserted or removed to yield an assembled or disassembled article, respectively. The creator creates a table by statistically calculating a likelihood of a correct bit value of each read level based on the channel matrix.