Patent ID: 9402058
Filing Date: 2016-07-26
CPC Classification: G06F,H04N

Claim Text:
1. A content delivery system, comprising: a first hardware processor configured to store content data to be delivered by sectioning the data into a plurality of pieces of hierarchical data of different encoding rates; a cache delivery device configured to load the content data from the first hardware processor and temporarily cache the loaded content data; a content delivery device configured to deliver the content data in response to an access request from an external terminal; and a cache content replacement controller, implemented by a second hardware processor, configured to replace the content data cached in advance with hierarchical data read out by the first hardware processor, wherein the cache content replacement controller is further configured to: calculate access request frequency degrees from the external terminal for each of the content data and each hierarchical data of the content data; calculate a proportion of a product of the access frequency degree and a user satisfaction function showing a bodily sensed quality of a client for a size of the content data as the score when calculating scores showing priority degrees to be stored for each of the hierarchical data of the content data based on the calculated access request frequency degrees; and judge whether or not to cache the data for each of the hierarchical data based on the scores.