公开(公告)号：EP1611522A4

公开(公告)日：2008-07-16

申请号：EP04718511

申请日：2004-03-08

Applicant: IBM

Inventor： AMINI LISA ,  FROSSARD PASCAL ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: G06F15/16 ,  H04L20060101 ,  H04L29/06 ,  H04N7/24 ,  H04N7/26

CPC classification number: H04L65/607 ,  H04L29/06027 ,  H04L65/602 ,  H04L65/80 ,  H04N21/23439 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/2662 ,  H04N21/84

公开(公告)号：JP2001320360A

公开(公告)日：2001-11-16

申请号：JP2001071425

申请日：2001-03-14

Applicant: IBM

Inventor： KIENZLE MARTIN ,  ROSE RAY E ,  VERSCHEURE OLIVIER

IPC: G06F12/14 ,  G06F21/24 ,  G09C5/00 ,  G10K15/02 ,  G10L19/00 ,  H04L9/08 ,  H04L9/12 ,  H04L9/18 ,  H04L29/06 ,  H04N7/167

Abstract: PROBLEM TO BE SOLVED: To provide a system and a method for protecting a digital multimedia stream from unauthorized editing. SOLUTION: The system for reinforcing continuity of a data stream includes a server connected to a transmission link for supplying the data stream to at least one client by the transmission link. The data stream is segmented into plural units. The server includes a scrambler for ciphering at least one first unit, by using a ciphering key and an information concealing unit for deciding the ciphering key and embedding the ciphering key in at least one second unit for data stream, that the client requires information for concealing information, in order to cipher and decode the data stream.

公开(公告)号：WO2004095761A3

公开(公告)日：2004-12-16

申请号：PCT/US2004006963

申请日：2004-03-08

Applicant: IBM

Inventor： AMINI LISA ,  FROSSARD PASCAL ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: G06F15/16 ,  H04L20060101 ,  H04L29/06

CPC classification number: H04L65/607 ,  H04L29/06027 ,  H04L65/602 ,  H04L65/80 ,  H04N21/23439 ,  H04N21/2402 ,  H04N21/26216 ,  H04N21/2662 ,  H04N21/84

Abstract: A system (101) and method (101, 201, 301) for streaming data over a communications network (400) with varying streaming conditions, include a conditioning unit (100) for conditioning the data by creating a plurality of representations, a packaging unit (200) responsive to the conditioning unit for packaging (201) the plurality of conditioned data representations, a media server (300) responsive to the packaging means for observing at Ieast one current streaming condition and selecting a most appropriate packaged conditioned data representation in accordance with the observed at Ieast one current streaming condition, and a communications network (400) responsive to the media server for streaming (301) the selected packaged conditioned data representation.

Abstract translation: 用于通过具有变化的流传输条件的通信网络（400）流式传输数据的系统（101）和方法（101,201,301）包括：调节单元（100），用于通过创建多个表示来调节数据;打包单元 （200），响应于所述调节单元来对所述多个调节数据表示进行打包（201）;响应于所述包装装置的媒体服务器（300），用于在一个当前的流传输条件下观察并根据所述的方式选择最合适的打包条件数据表示 在Ieast当前流传输条件下观察到的响应于媒体服务器的通信网络（400）用于流（301）所选择的打包条件数据表示。

公开(公告)号：AU781797B2

公开(公告)日：2005-06-16

申请号：AU7197200

申请日：2000-12-01

Applicant: IBM

Inventor： KIENZLE MARTIN ,  ROSE RAY E ,  VERSCHEURE OLIVIER

IPC: G06F12/14 ,  G06F21/24 ,  G09C5/00 ,  G10K15/02 ,  G10L19/00 ,  H04L9/08 ,  H04L9/12 ,  H04L9/18 ,  H04L29/06 ,  H04N7/167

Abstract: A system for enforcing data stream continuity, in accordance with the present invention, includes a server coupled to a transmission link for providing a data stream to at least one client over the transmission link. The data stream is segmented into units. The server includes a scrambler for encrypting at least one first unit using an encryption key, and a steganographic unit for embedding the encryption key into at least one second unit for the data stream such that steganographic information is needed by the client to determine the encryption key and decipher the data stream.

公开(公告)号：CA2516336C

公开(公告)日：2010-07-13

申请号：CA2516336

申请日：2004-03-08

Applicant: IBM

Inventor： AMINI LISA ,  FROSSARD PASCAL ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: G06F15/16 ,  H04L20060101 ,  H04L29/06

Abstract: A system (101) and method (101, 201, 301) for streaming data over a communications network (400) with varying streaming conditions, include a conditioning unit (100) for conditioning the data by creating a plurality of representations, a packaging unit (200) responsive to the conditioning unit for packaging (201) the plurality of conditioned data representations, a media server (300) responsive to the packaging means for observing at Ieast one current streaming condition and selecting a most appropriate packaged conditioned data representation in accordance with the observed at Ieast one current streaming condition, and a communications network (400) responsive to the media server for streaming (301) the selected packaged conditioned data representation.

公开(公告)号：AU7197200A

公开(公告)日：2001-09-20

申请号：AU7197200

申请日：2000-12-01

Applicant: IBM

Inventor： KIENZLE MARTIN ,  VERSCHEURE OLIVIER ,  ROSE RAY E

IPC: G06F12/14 ,  G06F21/24 ,  G09C5/00 ,  G10K15/02 ,  G10L19/00 ,  H04L9/08 ,  H04L9/12 ,  H04L9/18 ,  H04L29/06 ,  H04N7/167

Abstract: A system for enforcing data stream continuity, in accordance with the present invention, includes a server coupled to a transmission link for providing a data stream to at least one client over the transmission link. The data stream is segmented into units. The server includes a scrambler for encrypting at least one first unit using an encryption key, and a steganographic unit for embedding the encryption key into at least one second unit for the data stream such that steganographic information is needed by the client to determine the encryption key and decipher the data stream.

公开(公告)号：CA2522046C

公开(公告)日：2011-04-05

申请号：CA2522046

申请日：2003-09-19

Applicant: IBM

Inventor： AMINI LISA D ,  FROSSARD PASCAL ,  VENKA-TRAMANI CHITRA ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: H04L9/00 ,  H04H60/23 ,  H04L9/28 ,  H04L29/06

Abstract: Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.

公开(公告)号：DE60325105D1

公开(公告)日：2009-01-15

申请号：DE60325105

申请日：2003-09-19

Applicant: IBM

Inventor： AMINI LISA D ,  FROSSARD PASCAL ,  VENKATRAMANI CHITRA ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: H04L29/06

Abstract: Techniques for securely and adaptively delivering multimedia content are disclosed in which a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.

公开(公告)号：AT416553T

公开(公告)日：2008-12-15

申请号：AT03756843

申请日：2003-09-19

Applicant: IBM

Inventor： AMINI LISA ,  FROSSARD PASCAL ,  VENKATRAMANI CHITRA ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: H04L29/06

Abstract: Techniques for securely and adaptively delivering multimedia content are disclosed in which a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.

公开(公告)号：AU2003304065A1

公开(公告)日：2004-11-23

申请号：AU2003304065

申请日：2003-09-19

Applicant: IBM

Inventor： AMINI LISA D ,  FROSSARD PASCAL ,  VENKATRAMANI CHITRA ,  VERSCHEURE OLIVIER ,  WESTERINK PETER

IPC: H04L29/06

Abstract: Techniques for securely and adaptively delivering multimedia content are disclosed in which a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.