An image processing apparatus includes a separating unit, a setting unit, and a determining unit. According to the disclosed invention, the information stored in a row of DCAM cells being refreshed is transferred from the memory array into sense amplifiers, during a read phase of a refresh operation. The nanophase write poles exhibit high magnetic moments and are generally compatible with conventional writer head fabrication techniques. Based on the updated path loss information, the transmit power level andor the transmission rate of a receiving station is adjusted. The head has a contact surface to be in contact with the peripheral cylindrical surface of the second part.