PROBLEM TO BE SOLVED: To provide a history of the amount of activity with accuracy while reducing a required memory capacity.SOLUTION: An activity meter includes: an activity amount-acquisition part 112 which acquires the amount of activity of a body of a subject to be measured on a regular basis a first memory which has a capacity for storing the amount of activity corresponding to a unit period and follows a FIFO (first-in/first-out) system a first storage part 113 which sequentially inputs the amount of activity acquired by the activity amount-acquisition part 112 on a regular basis and stores the amount of activity to be input in the first memory a maximum extracting part 114 for extracting a maximum amount of activity out of the amount of activity for each fixed interval in the unit period from the first memory and a second storage part 115 which stores the maximum amount of activity that has been extracted by being associated with the time when the maximum amount of activity is acquired in a second memory for the succeeding display.COPYRIGHT: (C)2013,JPO&INPIT【課題】必要とされるメモリ容量を少なくしながら、活動量の履歴を精度よく提示する。【解決手段】活動量計は、被測定者の身体の活動量を定期的に取得する活動量取得部112と、単位期間に対応した活動量を記憶可能な容量を有するFIFOに従う第1メモリと、活動量取得部112によって定期的に取得される活動量を逐次入力し、入力する活動量を第1メモリに格納する第1格納部113と、第1メモリから、単位期間における定期毎の活動量のうちから最大活動量を抽出する最大抽出部114と、抽出された最大活動量を、その後の表示のために、当該最大活動量が取得された時間と関連付けて第2メモリに格納する第2格納部115と、を備える。【選択図】図4
