| 摘要 |
An internet TV system for automatically taking a survey of an audience to determine a rating of specified TV channels and during specified time periods. The internet TV system includes a broadcasting station and at least two internet TV receivers. The broadcasting station encodes a viewing channel search command into a TV broadcasting signal and broadcasts the TV broadcasting signal. The internet TV receivers decode the TV broadcasting signal received from the broadcasting station. If the decoded TV broadcasting signal includes the viewing channel search command, the internet TV receivers write electronic mails including currently viewed channels, and transmit the electronic mails to the broadcasting station. Then, the broadcasting station determines the audience rating based on the electronic mails received from the internet TV receivers. |
