A display terminal and display method for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display are disclosed. The terminal includes a bit error calculator for calculating a bit error rate per unit time of digital data received from the apparatus and a movement determination section for determining from a pattern of variation of the calculated bit error rate whether or not said display terminal is moving. Also provided is a reception quality display controller for displaying a quality level of the received data at the display terminal on the display section when it is determined that the display terminal is moving.