SYSTEMS AND METHODS FOR MEASURING INTEREST LEVELS OF AUDIENCE IN A BROADCAST PROGRAM AND PROVIDING INFORMATION BASED ON THE INTEREST LEVELS

摘要

Systems and methods for measuring interest levels of audience in a broadcast program and providing extra information based on the interest level. The methods include receiving an AV signal of a broadcast program and supplementary content which contains broadcast program related information and a tag identifying the broadcast program. The supplementary content is combined with the AV signal to form a data-augmented signal which is subsequently modulated with a carrier signal to form a transmit signal for broadcasting to receivers. Each receiver includes a decoder for extracting the supplementary content and means for computing interest levels and providing extra information based on the interest levels.