| 摘要 |
<p>The invention relates to a method for generating an electronic coupon (C) in the form of an electronic file evidencing a right to a user holding same, said method comprising, successively: - a step of transmitting a digital information stream (I), said stream comprising a broadcast signal (D) containing a television programme (E) and one or a plurality of flash advertisements (P), said stream also comprising, for each flash advertisement: a synchronisation signal (S) and a message (M), said message comprising one or a plurality of pieces of information relative to a right imparted to the user and being in the form of digital data, said message (M) being transmitted in said digital information stream (I), - a step of receiving the digital information stream (I) on a digital receiver (13) configured to process said broadcast digital information stream (I), said receiver receiving the broadcast signal (D), the synchronisation signal (S), and the message (M), - a step of acquiring the message (M) conditioned by reception of an activation signal (A), said activation signal must be triggered by the user during the occurrence of the synchronisation signal (S) in order to authorise the acquisition of said message (M) by said digital receiver (13), - a step of generating an electronic coupon (C) containing the acquired message (M), a digital signature allowing the authentication of said message (M) and a timestamp comprising information relative to the acquisition time of said message (M), said generating step being performed by the digital receiver (13).</p> |
