Patent ID: 8156524

Claim:
A content preference degree calculating method, executed by a processor, in which a preference degree of a viewer to a content corresponding to a series of visually or acoustically recognizable information is calculated from a viewing record of the content concerned, comprising: calculating, using said processor, as a preference degree Pr, the value of a function which is based on the combination of: the rate Ru (=Dw/Lu) of a viewing time Dw of the content concerned to a unit time Lu; and the rate Rc (=Dw/Lc) of the viewing time Dw of the content concerned to the time length Le of the content concerned, wherein the unit time Lu is able to set to a particular value by the viewer; wherein the preference degree Pr increases as the rate Ru is increased and wherein the preference degree Pr increases as the rate Rc is increased; adjusting the preference degree based on whether the content is viewed in a real broadcast viewing or a reproduction viewing; adding the calculated preference degree to a preference degree recorded in a storage device portion by some rate, and recording the preference degree after the addition as a post-renewal preference degree into the storage device portion wherein when a maximum value of the preference degree recorded in the storage device portion exceeds a threshold value, all the preference degrees recorded in the storage device portion are reduced with a same magnification and calculated based on a pre-renewal preference degree recorded in the storage device portion.