Patent ID: 9301006
Filing Date: 2016-03-29
CPC Classification: H04N

Claim Text:
1. A method performed by a viewer terminal for providing additional information on broadcast content to a viewer, the method comprising: extracting n-th voice feature data (where n is a natural number) from an audio signal that is inputted through the viewer terminal in a predetermined method to transmit it to a voice feature extraction server that is connected through a data network; receiving, from the voice feature extraction server, n-th voice feature information corresponding to the n-th voice feature data from among voice feature information in which audio feature data of the broadcast content is grouped in a predetermined unit; determining an n-th temporal location relevant to the n-th voice feature data from the received n-th voice feature information that corresponds to the n-th voice feature data; displaying the additional information related to the n-th temporal location where n is a natural number; when a predetermined event occurs, extracting (n+1)-th voice feature data; detecting (n+1)-th voice feature information corresponding to the (n+1)-th voice feature data from among one or more pieces of pre-stored voice feature information; determining the n-th temporal location related to the (n+1)-th voice feature data from the (n+1)-th voice feature information; displaying the additional information related to the (n+1)-th temporal location; when the voice feature information corresponding to the (n+1)-th voice feature data is not detected from among one or more pieces of pre-stored voice feature information, transmitting the (n+1)-th voice feature data to the voice feature extraction server; and receiving the (n+1)-th voice feature information corresponding to the (n+1)-th voice feature data from the voice feature extraction server.