Patent ID: 7884883

Claim:
A mobile terminal device, comprising: a receiving unit operable to receive a television broadcast; a detection unit operable to detect an undetermined period for determining an output of the receiving unit, the undetermined period being a changing period that is from a channel changing operation until an IDR picture is decoded and displayed, the IDR picture being a picture, among I pictures, which indicates that all reference pictures stored in a reference picture memory in a decoder are allowed to be invalidated; and a notification unit operable, during the undetermined period, to notify a user of the undetermined period and display, in a display screen, information that indicates a progress state of the undetermined period, the information indicating the progress state is at least one of a graphical bar that changes according to the progress state, a mark that changes according to the progress state, and a numeral value that is counted down according to the progress state, wherein the notification unit is also operable to: continuously or gradually update the information of the progress state to indicate a final state is reached, the final state being based on a maximum amount of time it takes from an initial state until the IDR picture is received; and update the information that indicates the progress state is in the final state when the IDR picture is received and further display information indicating the final state for a predetermined time, the predetermined time corresponding to a delay time from the time when the IDR picture is received until when the IDR picture is decoded and displayed, and the IDR picture which has been received is displayed after the final state is displayed for the predetermined time.