Patent ID: 8700702

Claim:
A data extraction system for extracting and accumulating prescribed data from web pages on the web, the data extraction system comprising: a plurality of terminals; and a server connected to the plurality of terminals, wherein the server comprises: a first processor; and a first memory including a first set of executable instructions that, when executed by the first processor, cause the first processor to perform first operations including: receiving the prescribed data extracted by at least one of the plurality of terminals; accumulating the prescribed data, extracted by the at least one of the plurality of terminals, with extracted data; and verifying whether the prescribed data, extracted by the at least one of the plurality of terminals, is already accumulated with the extracted data, the prescribed data being accumulated with the extracted data when the prescribed data is determined to not be already accumulated with the extracted data, and wherein each of the plurality of terminals comprises: a second processor; and a second memory including a second set of executable instructions that, when executed by the second processor, cause the second processor to perform second operations including: searching for one of the web pages on the web; extracting the prescribed data from the one of the web pages; sending the prescribed data extracted from the one of the web pages to the server; receiving, from the server, one of the prescribed data and information corresponding to the prescribed data only when the prescribed data is determined by the server to not be already accumulated with the extracted data and after the prescribed data is accumulated with the extracted data and not when the prescribed data is determined by the server to be already accumulated with the extracted data; and outputting the one of the prescribed data and the information corresponding to the prescribed data.