Patent ID: 8700635

Claim:
An electronic device comprising: a storage unit for storing content data; a reproduction unit configured to reproduce the content data stored on the storage unit; a control unit configured to manage reproduction history data of the content data in units of predetermined time intervals and instruct the storage unit to store the reproduction history data according to the predetermined time intervals; and a display unit configured to display a user interface comprising a plurality of user-selectable portions, each of which corresponds to a different one of the predetermined time intervals; wherein the content data comprises a plurality of tracks and the reproduction history data identifies which of the plurality of tracks were previously reproduced and when by the reproduction unit during the predetermined time intervals; wherein the predetermined time intervals are unrelated to the content data; wherein the reproduction history data includes information indicating a total number of the tracks that were reproduced by the reproduction unit in each of the predetermined time intervals; and wherein the user-selectable portions of the user interface indicate the total number of tracks that were reproduced by the reproduction unit in the corresponding predetermined time interval.