Electronic apparatus, content reproduction control method and an integrated circuit

Object of the present invention is to provide a user does not unduly limit the claimed without using a timer interrupt and the like can also manage the electronic device to use a content, comprising: the storage means to be protected from unauthorized access state memory for right information; receiving means for acquiring content; right judging unit, based on the reproduction information to determine whether the content is permitted according to; the control means, N is a natural number set playback order of the frames constituting the content of the frame in position, whenever made when frame N-th is reproduced and N satisfies a predetermined judgment condition, that the right judging unit to judge, in a case where determination by the right judging unit, the content playback is permitted, the N-th frame is decrypted by the rights determination Analyzing the case of reproducing the content is not permitted means restrict the subsequent N-th frames playback; and a tamper detection means, at each predetermined timing, part or all of an electronic device tamper detection.