公开(公告)号：EP0974229B1

公开(公告)日：2006-11-15

申请号：EP97921751.0

申请日：1997-04-25

申请人： Canal+ Technologies

发明人： BAYASSI, Mulham ,  DE LA TULLAYE, Pierre ,  JEZEQUEL, Jean-François

IPC分类号： H04N7/16 ,  H04N7/167

CPC分类号： G06F9/4843 ,  G06F11/10 ,  G06F11/1435 ,  G06Q20/04 ,  G06Q20/341 ,  G06Q20/357 ,  G06Q20/40975 ,  G06T9/007 ,  G07F7/1008 ,  G07F17/0014 ,  G11C16/102 ,  G11C16/105 ,  H04L63/0428 ,  H04L63/062 ,  H04N5/4401 ,  H04N7/163 ,  H04N7/1675 ,  H04N7/17309 ,  H04N7/17318 ,  H04N17/004 ,  H04N21/2347 ,  H04N21/2351 ,  H04N21/2541 ,  H04N21/2543 ,  H04N21/25816 ,  H04N21/26606 ,  H04N21/42676 ,  H04N21/4353 ,  H04N21/4405 ,  H04N21/44236 ,  H04N21/4623 ,  H04N21/47211 ,  H04N21/6137 ,  H04N21/6143 ,  H04N21/6187 ,  H04N21/6332 ,  H04N21/63345 ,  H04N21/6377 ,  H04N21/6582

摘要： A digital satellite television system has a plurality of set-top-boxes associated with a plurality of end users' television receivers, a modem and a decoder housed in each STB, a Subscriber Authorization System (SAS) incorporating or having associated therewith a plurality of communication servers, means included in the SAS for generating Electronic Managements Messages (EMM), a back channel interconnecting each of the STBs individually with the SAS, means included in the SAS and each STB so that the necessary information required to inject a relevant EMM into the system is supplied directly to the relevant communication server included in or associated with the SAS to authorise the release of the said EMM and/or means to connect the modem to the back channel and means whereby an EMM is transmissible to the decoder directly from a relevant communication server included in or associated with the SAS. Further important features are also disclosed.

公开(公告)号：EP1679894A2

公开(公告)日：2006-07-12

申请号：EP06112954.0

申请日：1997-04-25

申请人： Canal+ Technologies

发明人： BAYASSI, Mulham ,  DE LA TULLAYE, Pierre ,  JEZEQUEL, Jean-François

IPC分类号： H04N7/16

CPC分类号： G06F9/4843 ,  G06F11/10 ,  G06F11/1435 ,  G06Q20/04 ,  G06Q20/341 ,  G06Q20/357 ,  G06Q20/40975 ,  G06T9/007 ,  G07F7/1008 ,  G07F17/0014 ,  G11C16/102 ,  G11C16/105 ,  H04L63/0428 ,  H04L63/062 ,  H04N5/4401 ,  H04N7/163 ,  H04N7/1675 ,  H04N7/17309 ,  H04N7/17318 ,  H04N17/004 ,  H04N21/2347 ,  H04N21/2351 ,  H04N21/2541 ,  H04N21/2543 ,  H04N21/25816 ,  H04N21/26606 ,  H04N21/42676 ,  H04N21/4353 ,  H04N21/4405 ,  H04N21/44236 ,  H04N21/4623 ,  H04N21/47211 ,  H04N21/6137 ,  H04N21/6143 ,  H04N21/6187 ,  H04N21/6332 ,  H04N21/63345 ,  H04N21/6377 ,  H04N21/6582

摘要： There is disclosed a broadcast and reception system (100), comprising, at the broadcast end: a broadcast system (2008) including means for broadcasting a callback request, and at the reception end: a receiver (2020) including means for calling back the broadcast system in response to the callback request, wherein the broadcast system is arranged to validate said receiver via said callback request.

公开(公告)号：EP0968609B1

公开(公告)日：2002-11-27

申请号：EP97921749.4

申请日：1997-04-25

申请人： Canal+ Technologies

发明人： FICHET, Laurent ,  DE LA TULLAYE, Pierre ,  DE SARZENS, Philip ,  JEZEQUEL, Jean-François

IPC分类号： H04N7/167

CPC分类号： G06T9/007 ,  G06F9/4843 ,  G06F11/10 ,  G06F11/1435 ,  G06Q20/04 ,  G06Q20/06 ,  G06Q20/1235 ,  G06Q20/341 ,  G06Q20/342 ,  G06Q20/4033 ,  G06Q20/40975 ,  G07F7/025 ,  G07F7/08 ,  G07F7/1008 ,  G07F17/0014 ,  G11C16/105 ,  H04H20/51 ,  H04H40/90 ,  H04H60/14 ,  H04N5/4401 ,  H04N7/163 ,  H04N7/165 ,  H04N7/1675 ,  H04N7/17309 ,  H04N7/17318 ,  H04N17/004 ,  H04N21/235 ,  H04N21/2543 ,  H04N21/258 ,  H04N21/26266 ,  H04N21/26606 ,  H04N21/435 ,  H04N21/4367 ,  H04N21/44236 ,  H04N21/4437 ,  H04N21/4622 ,  H04N21/4623 ,  H04N21/47211 ,  H04N21/4782 ,  H04N21/8166 ,  H04N21/8355

摘要： The invention includes a mostly conventional digital television system (2000) to transmit compressed digital signals. A multiplexer (2004) receives a plurality of further input signals, assembles one or more transport streams and transmits compressed digital signals to a transmitter (2008) of the broadcast centre via linkage (2010). The transmitter (2008) transmits electromagnetic signals via uplink (2012) towards a satellite transponder (2014), where they are electronically processed and broadcast via notional downlink (2016) to earth receiver (2018). The signals received by receiver (2018) are transmitted to an integrated receiver/decoder (2020) connected to the end user's television set (2022). The receiver/decoder (2020) decodes the compressed MPEG-2 signal into a television signal for the television set (2022). A conditional access system (3000) is connected to the multiplexer (2004) and the receiver/decoder (2020), and is located partly in the broadcast centre and partly in the decoder. It enables the end user to access digital television broadcasts from one or more broadcast suppliers. A smartcard, capable of decrypting messages relating to one or several television programmes sold by the broadcast supplier, can be inserted into the receiver/decoder (2020). Using the decoder (2020) and smartcard, the end user may purchase commercial offers in either a subscription mode or a pay-per-view mode. A number of features of particular interest are disclosed, involving the randomization of EMMs, mixing parameter length and identifier on EMMs and the like to save space, dynamic allocation of bandwidth for specific EMMs, and the STM being separate from the SMS.