Patent ID: 8180731

Claim:
An information-processing apparatus, comprising: a central processing unit; an acquisition section configured to acquire, in conjunction with the processing unit, from a portable reproduction apparatus which reproduces content data stored therein, reproduction history information of the content data reproduced by the portable reproduction apparatus; an evaluation value arithmetic operation section configured to arithmetically operate, in conjunction with the processing unit, a computed evaluation value corresponding to the content data based on the reproduction history information acquired by said acquisition section; a transfer section configured to transfer, in conjunction with the processing unit, the computed evaluation value to the portable reproduction apparatus; and a connection detection section configured to detect that the portable reproduction apparatus is connected to said information-processing apparatus; wherein if said connection detection section detects that the portable reproduction apparatus is connected, said acquisition section acquires the reproduction history information of the content data in the portable reproduction apparatus from the portable reproduction apparatus and said evaluation value arithmetic operation section arithmetically operates the computed evaluation value corresponding to the content data based on the reproduction history information of the content data in the portable reproduction apparatus acquired by said acquisition section, and said transfer section transfers the computed evaluation value arithmetically operated by said evaluation value arithmetic operation section to the portable reproduction apparatus; if a continuous connection duration between the portable reproduction apparatus and the information-processing apparatus is detected to exceed the specific time period, the arithmetically operating is executed to arithmetically re-operate the computed evaluation value, which is stored in the evaluation value storage section and corresponds to the content data stored in the portable reproduction apparatus, based on the reproduction history information newly produced in the producing, and the transferring is executed to transfer the arithmetically re-operated computed evaluation value to the portable reproduction apparatus.