公开(公告)号：US11936631B2

公开(公告)日：2024-03-19

申请号：US17309876

申请日：2019-12-27

Applicant: VIACCESS

Inventor： Pérez Pelage

IPC: H04L9/40 ,  H04L9/00 ,  H04L9/08 ,  H04L9/30 ,  G06F30/10

CPC classification number: H04L63/0428 ,  H04L9/008 ,  H04L9/0894 ,  H04L9/3073 ,  G06F30/10

Abstract: The invention relates to a method and a system for computer-assisted maintenance of a device to be maintained, comprising a storage in a first system, which storage is implemented progressively when in use an operating system comprising the device to be maintained, of operational data associated with the said operating system. For a maintenance processing method, which is to be implemented by the second system (8) by applying a processing algorithm (38) to a set of operational data, the maintenance system uses a homomorphic or partially homomorphic cryptosystem (28) to obtain a modified maintenance processing algorithm (40) which makes it possible to obtain an item of predictive or corrective maintenance information in encrypted form, from a set of protected operational data comprising a first subset of encrypted operational data ((D1)H) by a means of a cryptosystem encryption method (28), and a second subset of plain data (D2) from the said set of operational data.

公开(公告)号：US11153624B2

公开(公告)日：2021-10-19

申请号：US16603862

申请日：2018-04-06

Applicant: VIACCESS

Inventor： Vincent Hamon

IPC: H04N21/266 ,  H04N21/647 ,  G06F3/01 ,  H04N7/167 ,  H04N21/4405 ,  H04N21/254 ,  H04N21/835

Abstract: This method for reading a video stream comprises a step of comparing a datum characteristic of a behavior of a user with a set of predetermined thresholds, each of which, when it is crossed, characterizes an abnormal behavior of the user, a step of signaling an abnormal behavior if at least one predetermined part of these thresholds is crossed, and, otherwise, the absence of this signaling of an abnormal behavior, and a step of executing a counter-measure which makes it more difficult or impossible to access the set of information items contained in a first baseband video stream on the basis of various proofs of a second baseband video stream composed by a first terminal, this execution step being triggered automatically in response to the signaling of an abnormal behavior and not being triggered in the absence of this signaling of an abnormal behavior.

公开(公告)号：US10915607B2

公开(公告)日：2021-02-09

申请号：US14911079

申请日：2014-08-04

Applicant: VIACCESS

Inventor： Mathieu Boivin

IPC: G06F21/10 ,  H04N21/6334 ,  H04N21/8355 ,  H04N21/258 ,  H04N21/658 ,  H04N21/254

Abstract: A method for providing a licence includes: a step a) wherein a server receives a request including an identifier of a multimedia content and an identifier of a terminal or of a user. The server computes the licence including at least one access data needed by the terminal to access the multimedia content. Before step a), there is a step e) for obtaining a first recommendation list for the user and from the list, obtaining one multimedia content identifier. For each automatically selected identifier, the method includes pre-computing at least one access data, and in a step b), searching for the identifier of the multimedia content received in step a) from among the identifiers automatically selected in the step e). In the event of success, the method includes selecting the pre-computed access data corresponding to the identifier, and, in the event of failure, generating the access data.

公开(公告)号：US10200136B2

公开(公告)日：2019-02-05

申请号：US15543762

申请日：2016-01-08

Applicant: VIACCESS

Inventor： Mathieu Phirmis

IPC: H04H60/15 ,  G06F21/10 ,  H04H60/23 ,  H04N21/239 ,  H04N21/266 ,  H04N21/4623

Abstract: A method for broadcasting protected multimedia content includes, at predetermined intervals, having an access-rights server broadcast each new right of access to the broadcast multimedia content only to those terminals whose logins are included in a broadcast list. In response to a predetermined event, a terminal sends, to the access-rights server, via a point-to-point connection, a status message indicating, to the access-rights server, that the terminal is in its ready state. Alternatively, if the terminal is occupied, it avoids sending a status message. In the absence of reception of the status message that was expected in response to the predetermined event, the access-rights server automatically removes the identifier of the terminal from the broadcast list.

公开(公告)号：US10678891B2

公开(公告)日：2020-06-09

申请号：US15779351

申请日：2016-11-24

Applicant: VIACCESS

Inventor： Bruno Tronel

IPC: G06F21/10 ,  H04N21/237 ,  H04N21/266 ,  H04N21/254 ,  H04L29/08

Abstract: The invention relates to a method for the identification of security processors in a system for delivering protected multimedia content, in which: upon request from an identification device, a network head-end transmits (136) a command to suspend a first identified pre-determined security processor which, in response, switches (136) from an active state to an idle state; the sharing server detects (120) that the first security processor is in the idle state and then transmits (120) access control messages to a second security processor instead of the first security processor; in response to the identification of at least the second security processor, upon request from the identification device, the network head-end transmits (134) a command to re-establish the first security processor, and, subsequently, in response, the first security processor switches (134) from the idle state to the active state.

公开(公告)号：US20190042848A1

公开(公告)日：2019-02-07

申请号：US16074627

申请日：2017-01-03

Applicant: VIACCESS

Inventor： Emmanuel Pira

IPC: G06K9/00 ,  G06K9/46 ,  H04N21/2187 ,  G06K7/14

Abstract: A method of identifying a show in a video that has been filmed by a spectator's camera includes selecting a color set to identify the show, recording, in a database, a show identifier associated with a code for the color set, before the show is filmed, inserting, within a scene in which the show is performed, a display-panel set, causing the display-panel set to display the color set without considering scene lighting, thereby raising a likelihood that the camera will capture the displayed color set, once the camera has begun filming a video of the scene, causing a tracer to download an image of the video, to search within the image for the color set associated by the database with the show identifier, and to respond to finding the color set by identifying the filmed show with the aid of the show identifier.

公开(公告)号：US10051310B2

公开(公告)日：2018-08-14

申请号：US14896715

申请日：2014-06-06

Applicant: VIACCESS

Inventor： Vincent Hamon

IPC: H04N21/426 ,  H04N21/258 ,  H04N21/222 ,  H04N21/266 ,  H04N21/6543 ,  H04N21/8358 ,  H04N21/2347 ,  H04N21/418 ,  H04N21/4405

Abstract: A terminal identification method which acquires then decodes multimedia temporal content to generate a multimedia stream in unscrambled form with at least one temporal succession of time intervals. A set of information bits for displaying an image or playing a sound being transmitted during a single time interval. The terminal identification device transmits an identification command to the terminal and the terminal triggers and alternately inhibits a predetermined modification of at least some of the information bits necessary for playing a sound or displaying an image contained in the multimedia stream to obtain a modified multimedia stream and transmits the stream as a multimedia. The device acquires the modified stream transmitted by the terminal and determines the identifier of the terminal to which it belongs on the basis of the transmitted command and the presence or absence of the predetermined modification in the acquired stream.

公开(公告)号：US20160180064A1

公开(公告)日：2016-06-23

申请号：US14911079

申请日：2014-08-04

Applicant: VIACCESS

Inventor： Mathieu Boivin

IPC: G06F21/10 ,  H04N21/258 ,  H04N21/254

CPC classification number: G06F21/105 ,  G06F2221/0768 ,  H04N21/2541 ,  H04N21/25816 ,  H04N21/25875 ,  H04N21/25891 ,  H04N21/63345 ,  H04N21/6581 ,  H04N21/8355

Abstract: A method for providing a licence includes: a step a) wherein a server receives a request including an identifier of a multimedia content and an identifier of a terminal or of a user. The server computes the licence including at least one access data needed by the terminal to access the multimedia content. Before step a), there is a step e) for obtaining a first recommendation list for the user and from the list, obtaining one multimedia content identifier. For each automatically selected identifier, the method includes pre-computing at least one access data, and in a step b), searching for the identifier of the multimedia content received in step a) from among the identifiers automatically selected in the step e). In the event of success, the method includes selecting the pre-computed access data corresponding to the identifier, and, in the event of failure, generating the access data.

Abstract translation: 提供许可证的方法包括：步骤a）其中服务器接收包括多媒体内容的标识符和终端或用户的标识符的请求。 服务器计算许可证，其中包括终端访问多媒体内容所需的至少一个访问数据。 在步骤a）之前，存在用于获得用户和列表的第一推荐列表的步骤e），获得一个多媒体内容标识符。 对于每个自动选择的标识符，所述方法包括预先计算至少一个访问数据，并且在步骤b）中，从在步骤e）中自动选择的标识符中搜索在步骤a）中接收的多媒体内容的标识符。 在成功的情况下，该方法包括选择对应于该标识符的预先计算的访问数据，并且在发生故障的情况下生成访问数据。

公开(公告)号：US20220094670A1

公开(公告)日：2022-03-24

申请号：US17309876

申请日：2019-12-27

Applicant: VIACCESS

Inventor： Pérez PELAGE

IPC: H04L9/00 ,  H04L9/08 ,  H04L9/30 ,  G06F30/10

Abstract: The invention relates to a method and a system for computer-assisted maintenance of a device to be maintained, comprising a storage in a first system, which storage is implemented progressively when in use an operating system comprising the device to be maintained, of operational data associated with the said operating system. For a maintenance processing method, which is to be implemented by the second system (8) by applying a processing algorithm (38) to a set of operational data, the maintenance system uses a homomorphic or partially homomorphic cryptosystem (28) to obtain a modified maintenance processing algorithm (40) which makes it possible to obtain an item of predictive or corrective maintenance information in encrypted form, from a set of protected operational data comprising a first subset of encrypted operational data ((D1)H) by a means of a cryptosystem encryption method (28), and a second subset of plain data (D2) from the said set of operational data.

公开(公告)号：US11202111B2

公开(公告)日：2021-12-14

申请号：US16323051

申请日：2017-07-28

Applicant: VIACCESS

Inventor： Vincent Hamon

IPC: H04N13/344 ,  H04N21/2347 ,  H04N21/422 ,  H04N21/4728 ,  H04N13/383 ,  H04N21/2343 ,  H04N21/4405

Abstract: This method of reading a video stream comprises: the reception (92) of a video stream which comprises, associated with each tile of an image, a high-quality variant and a degraded variant, this degraded variant being able to be decompressed independently of the degraded variants associated with other tiles which do not have the same coordinates and independently of the high-quality variant associated with the same tile, for each selected tile, the decryption (118) and the decompression (120) of the high-quality variant associated with this selected tile and, for each unselected tile, the decompression (126) of the degraded variant associated with this unselected tile, and then the construction (130) of the degraded version of each portion of the image situated inside an unselected tile on the basis of the degraded variant associated with this unselected tile.