公开(公告)号：US20210264041A1

公开(公告)日：2021-08-26

申请号：US17254837

申请日：2019-07-02

Applicant: VIACCESS

Inventor： Perez Pelage

IPC: G06F21/60 ,  G06F21/16 ,  H04L9/08 ,  G06F30/20 ,  H04L9/32

Abstract: Authenticating computer-aided manufacturing of a three-dimensional part by a manufacturing device, using at least one material, the part defined by a three-dimensional model obtained by computer aided design, the manufacturing device ordered for manufacturing from the model and a global set of manufacturing parameters. Method includes generating a cryptographic key as a function of the values of parameters of a subset of parameters of the global set of manufacturing parameters, including at least one parameter of a set of design parameters of the manufacturing device, or of a set of parameters relating to the manufacturing method, or of a set of characteristic parameters of the material, detecting a watermark in the model by applying a detection algorithm initialized with the cryptographic key generated, comparing the detected watermark with an expected watermark, and authenticating the manufacture of the part in the event of a positive comparison.

公开(公告)号：US10740616B2

公开(公告)日：2020-08-11

申请号：US16074627

申请日：2017-01-03

Applicant: VIACCESS

Inventor： Emmanuel Pira

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

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：US10142683B2

公开(公告)日：2018-11-27

申请号：US15326904

申请日：2015-07-10

Applicant: Viaccess

Inventor： Amine Dogui

IPC: H04N21/4405 ,  H04L29/06 ,  H04N5/913 ,  H04N21/4408 ,  H04N21/433 ,  G06F21/10

Abstract: A method for accessing protected multimedia includes receiving an encrypted fragment of the multimedia content and receiving a key for decrypting it, using the key to decrypt the fragment, thereby obtaining an unscrambled fragment, replacing original bits of the unscrambled fragment with different substituted bits to obtain a modified fragment, and reconstructing the modified fragment is reconstructed by replacing substituted bits of the extracted modified fragment with the original bits. The resulting reconstructed fragment is then decoded and the resulting decoded fragment is sent to a multimedia appliance to be enjoyed by a human viewer.

公开(公告)号：US20180307807A1

公开(公告)日：2018-10-25

申请号：US15779351

申请日：2016-11-24

Applicant: VIACCESS

Inventor： Bruno TRONEL

IPC: G06F21/10

CPC classification number: G06F21/10 ,  G06F2221/0742 ,  H04L67/10 ,  H04N21/237 ,  H04N21/2541 ,  H04N21/26606

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：US09794630B2

公开(公告)日：2017-10-17

申请号：US14439011

申请日：2013-10-10

Applicant: VIACCESS

Inventor： Vicente Sanchez-Leighton

IPC: H04N21/443 ,  H04N21/4627 ,  H04N21/81 ,  G06F21/53 ,  G06F9/455 ,  H04N21/4623 ,  G06F21/78

CPC classification number: H04N21/4623 ,  G06F9/45533 ,  G06F9/45558 ,  G06F21/53 ,  G06F21/78 ,  G06F2009/45587 ,  G06F2221/034 ,  H04N21/4437 ,  H04N21/4627 ,  H04N21/8173

Abstract: A multimedia content processing device for processing multimedia contents implementing a plurality of virtual machines is provided. The device is able to receive encrypted multimedia content, protected by a content protection system, and provide the multimedia content in decrypted form to a user device, including an access controller authorizing the provision of the decrypted multimedia content to the user device, a first securer for executing security services having a first associated level of security and a second securer for executing services having an associated level of security lower than the first level of security. The device includes a hypervisor able to control the execution of at least three groups of virtual machines, the groups of virtual machines being executed in a strictly separate manner, including, the first two groups being dedicated to executing services with a level of security lower than the first level of security and the third group of virtual machines able to implement security services with a first level of security and to act as trusted third parties for services of the first and second groups of virtual machines.

公开(公告)号：US20170208361A1

公开(公告)日：2017-07-20

申请号：US15326904

申请日：2015-07-10

Applicant: Viaccess

Inventor： Amine DOGUI

IPC: H04N21/4405 ,  H04N5/913 ,  H04N21/433 ,  G06F21/10

CPC classification number: H04N21/44055 ,  G06F21/10 ,  H04L63/145 ,  H04N5/913 ,  H04N21/4334 ,  H04N21/4408 ,  H04N2005/91364

Abstract: A method for accessing protected multimedia includes receiving an encrypted fragment of the multimedia content and receiving a key for decrypting it, using the key to decrypt the fragment, thereby obtaining an unscrambled fragment, replacing original bits of the unscrambled fragment with different substituted bits to obtain a modified fragment, and reconstructing the modified fragment is reconstructed by replacing substituted bits of the extracted modified fragment with the original bits. The resulting reconstructed fragment is then decoded and the resulting decoded fragment is sent to a multimedia appliance to be enjoyed by a human viewer.

公开(公告)号：US20170070496A1

公开(公告)日：2017-03-09

申请号：US15122764

申请日：2015-02-20

Applicant: VIACCESS

Inventor： Mathieu PHIRMIS ,  Mathieu BOIVIN ,  Quentin CHIEZE ,  Nicolas POCHON

IPC: H04L29/06

CPC classification number: H04L63/08 ,  G06F1/14 ,  G06F21/10 ,  H04L63/123 ,  H04L2209/603 ,  H04L2463/101

Abstract: A Method for supplying protected multimedia content during which a terminal a) acquires a service date from a date server and b) evaluates a temporal criterion of a licence with respect to the last acquired service date. A headend associates with each segment of the multimedia content, its transmission date, and transmits it in a stream together with the segment. The terminal extracts from the stream the date of transmission of the segment, then it compares the extracted transmission date to the last acquired service date. And, only if the extracted transmission date is later than the last acquired service date, acquires it as service date, and uses it as last acquired service date on an execution of the step b) between two successive executions of the step a).

Abstract translation: 一种用于提供受保护的多媒体内容的方法，其中终端a）从日期服务器获取服务日期，以及b）评估关于最后获取的服务日期的许可证的时间标准。 头端与多媒体内容的每个段，其发送日期相关联，并且与段一起以流形式发送它。 终端从流中提取分段的传输日期，然后将提取的传输日期与最后获取的服务日期进行比较。 而且，只有提取的发送日期晚于最后获取的服务日期，才将其作为服务日期获取，并且在步骤a）的两个连续执行之间执行步骤b）时将其用作最后获取的服务日期。

公开(公告)号：US20220121173A1

公开(公告)日：2022-04-21

申请号：US17310447

申请日：2020-02-07

Applicant: VIACCESS

Inventor： Pérez PELAGE

IPC: G05B19/4099

Abstract: The invention relates to a method and system for computer-aided manufacturing (2) of a three-dimensional part by a manufacturing device, and an associated method and system for complete or partial remanufacturing (4), using at least one predetermined manufacturing material, and implementing a set of manufacturing data. The manufacturing system (2) comprises modules (14, 18, 22, 6) configured to implement, during or at the end of the manufacturing of a three-dimensional part: a calculation of a piece of remanufacturing information associated with said three-dimensional part, and comprising or allowing access to the set of data for manufacturing said three-dimensional part, an inscription on the surface or in the body of said three-dimensional part, by a predetermined marking method, of a remanufacturing mark coding said remanufacturing information. The remanufacturing system comprises modules (32, 36, 40, 46, 48) configured to implement a reading of the remanufacturing mark, obtaining of a set of manufacturing data of the initial three-dimensional part and a complete or partial remanufacturing of a three-dimensional part mechanically identical to said initial three-dimensional part.

公开(公告)号：US11039223B2

公开(公告)日：2021-06-15

申请号：US16066192

申请日：2016-12-30

Applicant: VIACCESS

Inventor： Vincent Hamon

IPC: H04N21/8358 ,  H04N21/4627 ,  H04N21/81

Abstract: The invention relates to a method for processing multimedia streams, in particular to verify access rights to a content of said multimedia stream, the multimedia stream being provided by a server device connected to a communication network, and downloadable by a client device via data formatted in a markup language, by using software for browsing and displaying data formatted in a markup language, cooperating with software for reading multimedia streams, the multimedia stream comprising at least one video stream able to be displayed in the form of pixels in a display zone (42, 44, 46, 48) of a display screen of the client device. The method includes determining a display zone (42), allocated by said browsing and display software to the software for reading multimedia streams in order to display a video stream extracted from said multimedia stream, and recording at least one digital image formed by values of the pixels to be displayed in the display zone (42) determined at a given time.

公开(公告)号：US20200275169A1

公开(公告)日：2020-08-27

申请号：US16066192

申请日：2016-12-30

Applicant: VIACCESS

Inventor： Vincent HAMON

IPC: H04N21/8358 ,  H04N21/4627 ,  H04N21/81

Abstract: The invention relates to a method for processing multimedia streams, in particular to verify access rights to a content of said multimedia stream, the multimedia stream being provided by a server device connected to a communication network, and downloadable by a client device via data formatted in a markup language, by using software for browsing and displaying data formatted in a markup language, cooperating with software for reading multimedia streams, the multimedia stream comprising at least one video stream able to be displayed in the form of pixels in a display zone (42, 44, 46, 48) of a display screen of the client device. The method includes determining a display zone (42), allocated by said browsing and display software to the software for reading multimedia streams in order to display a video stream extracted from said multimedia stream, and recording at least one digital image formed by values of the pixels to be displayed in the display zone (42) determined at a given time.