Patent ID: 7920164
Filing Date: 2011-04-05
Classification: H04H,H04N

Abstract:
1. A viewing surveillance system comprising: a viewing surveillance terminal installed in a graphic displaying terminal for displaying an image of a program to be broadcasted; a viewing surveillance server connected to said viewing surveillance terminal; and a program image feature quantity generating unit generating an image feature quantity, which is information indicating a feature of said image for each program of each channel, based on a picture signal of said program broadcasted in each channel, wherein said viewing surveillance terminal includes: a picture signal input unit to which said picture signal of said image displayed by said graphic displaying terminal is inputted from said graphic displaying terminal; an image feature quantity generating unit generating an image feature quantity, which is information indicating a feature of said image displayed by said graphic displaying terminal based on said picture signal inputted to said picture signal input unit; and a transmitting unit transmitting said image feature quantity generated by said image feature quantity generating unit to said viewing surveillance server, and said viewing surveillance server includes: a program image feature quantity storing unit storing said image feature quantity generated by said program image feature quantity generating unit; and a viewing program specifying unit specifying said program displayed by said graphic displaying terminal or said channel broadcasting said program by estimating a degree of similarity between said image feature quantity transmitted by said transmitting unit and each said image feature quantity stored by said program image feature quantity storing unit, wherein said transmitting unit transmits information of a time when said picture signal is inputted to said picture signal input unit from said graphic displaying terminal, together with said image feature quantity generated based on said picture signal, to said viewing surveillance server, said program image feature quantity generating unit stores information of said time when said picture signal of said program is received, together with said image feature quantity generated based on said picture signal in said program image feature quantity storing unit, and said viewing surveillance server further includes a first degree of similarity estimation process target restriction unit determining a target of an estimation process of said degree of similarity by said viewing program specifying unit based on information of said time received from said transmitting unit and information of a time stored by said program image feature quantity storing unit, wherein said program image feature quantity storing unit stores said image feature quantity generated by said program image feature quantity generating unit for each said channel, said transmitting unit transmits a position information indicating a position of said graphic displaying terminal together with said image feature quantity to said viewing surveillance server, and said viewing surveillance server further includes: a channel information storing unit storing a list information of said channel that can be received at respective positions; and a second degree of similarity estimation process target restriction unit determining a target of an estimation of said degree of similarity by said viewing program specifying unit by specifying said channel that can be received by said graphic displaying terminal based on said position information of said graphic displaying terminal received from said transmitting unit and said list information.