专利名称：Interactive television transmission system发明人：HENRICUS ANTONIUS WILHELMUS VAN
GESTEL
申请号：AU6004198申请日：19980305公开号：AU732192B2公开日：20010412
摘要：Interactive television transmission system including a television transmitter (1)and at least one television receiver (3). Along with the television program (TV), thetransmitter transmits operational signals (OP) defining actions to be taken by thereceiver upon user participation. In accordance with the invention, the transmittercomprises means (15) for transmitting an indication signal (ID) to indicate that thetelevision program is an interactive program, e.g. in a teletext packet 8/30. The receiver isarranged to receive and detect said indication signal and generate a perceptibleindication (OSD) in response to said detection to inform the user about the type ofprogram and activate the relevant processing circuitry (36).
申请人：KONINKLIJKE PHILIPS ELECTRONICS N.V.
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