公开(公告)号：US20190174160A1

公开(公告)日：2019-06-06

申请号：US16323051

申请日：2017-07-28

Applicant: VIACCESS

Inventor： Vincent Hamon

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

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.

公开(公告)号：US20180189092A1

公开(公告)日：2018-07-05

申请号：US15741220

申请日：2016-06-30

Applicant: Viaccess

Inventor： Vicente Sanchez Leighton

IPC: G06F9/455 ,  G06F21/53 ,  G06F21/74

CPC classification number: G06F9/45558 ,  G06F21/53 ,  G06F21/74 ,  G06F2009/4557 ,  G06F2009/45587 ,  G06F2009/45591 ,  G06F2221/034

Abstract: The invention relates to a method and a system for secure execution of virtual machines by a set of interconnected programmable devices, each including at least one processor, each programmable device being able to execute applications of a plurality of virtual machines and including a hardware portion for standard security level execution and a secure hardware portion for a security level higher than the standard security level.The method includes storing at least one secure execution environment (TEEi) associated with each virtual machine. Following a request for secure execution of a series of instructions of an application by a requesting virtual machine, it comprises allocating said secure execution at least one available secure hardware portion belonging to one of the interconnected processors, loading the secure execution environment (TEE1) associated with the requesting virtual machine (VM1) in the allocated secure hardware portion(s). The allocated secure hardware portion is used for the secure execution of the sequence of instructions.

公开(公告)号：US20170373778A1

公开(公告)日：2017-12-28

申请号：US15543762

申请日：2016-01-08

Applicant: VIACCESS

Inventor： Mathieu Phirmis

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

CPC classification number: H04H60/15 ,  G06F21/10 ,  H04H60/23 ,  H04N21/239 ,  H04N21/2393 ,  H04N21/26606 ,  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：US20170085946A1

公开(公告)日：2017-03-23

申请号：US15126113

申请日：2015-03-19

Applicant: VIACCESS

Inventor： Emmanuel PIRA

IPC: H04N21/44 ,  G06K9/46 ,  H04N21/442 ,  H04N21/4223 ,  H04N21/8352 ,  H04N21/41

CPC classification number: H04N21/44008 ,  G06K9/4661 ,  H04N21/4104 ,  H04N21/4223 ,  H04N21/44231 ,  H04N21/8352

Abstract: A method for identifying, via a first terminal, a content being displayed on a screen of a second terminal located in the same space as the first terminal includes collecting with the first terminal the luminosity produced in the space by the screen of the second terminal, generating with the first terminal at least one digital fingerprint depending on the collected luminosity, comparing the fingerprint generated to a reference fingerprint stored beforehand in a memory, and identifying the content depending on the result of the comparison.

公开(公告)号：US20160165296A1

公开(公告)日：2016-06-09

申请号：US14896715

申请日：2014-06-06

Applicant: VIACCESS

Inventor： Vincent Hamon

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

CPC classification number: H04N21/42684 ,  H04N21/222 ,  H04N21/2347 ,  H04N21/25816 ,  H04N21/26606 ,  H04N21/4181 ,  H04N21/4405 ,  H04N21/6543 ,  H04N21/8358

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.

Abstract translation: 获取的终端识别方法随后以至少一个时间连续的时间间隔解码多媒体时间内容以以未加扰的形式生成多媒体流。 用于在单个时间间隔期间显示图像或播放正在发送的声音的一组信息位。 终端识别装置向终端发送识别命令，并且终端触发并交替地禁止播放声音所需的至少一些信息位或显示包含在多媒体流中的图像的预定修改以获得修改的多媒体流，并且 将流作为多媒体传输。 设备获取由终端发送的修改的流，并根据所发送的命令和所获取的流中是否存在预定的修改来确定其所属的终端的标识符。

公开(公告)号：US20150195421A1

公开(公告)日：2015-07-09

申请号：US14412853

申请日：2013-07-01

Applicant: Viaccess

Inventor： Laurent Clisson

IPC: H04N1/32 ,  G06T11/60 ,  G06T1/00 ,  G06F21/10

CPC classification number: H04N1/32144 ,  G06F17/2217 ,  G06F21/10 ,  G06F2221/0737 ,  G06F2221/074 ,  G06F2221/0746 ,  G06F2221/0748 ,  G06T1/0071 ,  G06T11/60 ,  G06T2201/0062 ,  G06T2201/0063 ,  G06T2201/0064 ,  H04N1/32272 ,  H04N1/32304 ,  H04N2201/3239 ,  H04N2201/327

Abstract: A method for water-marking digital books with parameters involves developing, for each parameter, a new typeface on the basis of a pre-existing typeface, by creating at least one new code/glyph pair. The method also includes developing a new coded text on the basis of the pre-existing coded text by replacing, in the pre-existing coded text, at least one code or group of codes from the pre-existing typeface. The method further includes allowing display of a character or a combination of characters from the digital book by the code or the group of codes from the new typeface allowing display of the graphically identical character or combination of characters on any screen. The code or this group of codes from the new typeface having at least the code from the new code/glyph pair, providing the new coded text and the new typeface as a water-marked digital book.

Abstract translation: 水印数字书籍的方法涉及到通过创建至少一个新的代码/字形对，为每个参数开发基于预先存在的字体的新字体。 该方法还包括在预先存在的编码文本的基础上开发新的编码文本，通过在预先存在的编码文本中替换来自预先存在的字体的至少一个代码或代码组。 该方法还包括允许通过来自新字体的代码或代码组从数字书籍显示字符或字符组合，允许在任何屏幕上显示图形相同的字符或字符组合。 来自新字体的代码或这组代码至少具有来自新代码/字形对的代码，提供新的编码文本和新的字体作为水印数字书。

公开(公告)号：US20150058876A1

公开(公告)日：2015-02-26

申请号：US14378868

申请日：2013-02-07

Applicant: Viaccess

Inventor： Jean-Marc Gasnier

IPC: H04N21/63 ,  H04N21/442 ,  H04N21/426 ,  G06Q30/02 ,  H04N21/24

CPC classification number: H04N21/632 ,  G06Q30/02 ,  G06Q30/0201 ,  H04L67/104 ,  H04L67/1063 ,  H04L67/1076 ,  H04L67/1093 ,  H04L67/22 ,  H04N21/2407 ,  H04N21/42684 ,  H04N21/44222

Abstract: A method for measuring an audience of peers of a television channel streamed over a peer-to-peer network includes connecting at least one monitored peer to the peer-to-peer network and sending by the at least one monitored peer a request to at least one neighboring peer of the peer-to-peer network. There is an identifier of the at least one neighboring peer contained in its own list of neighboring peers. In reply to the request, receiving by the at least one monitored peer a list of neighboring peers receiving the television channel streamed over the peer-to-peer network and containing for this purpose, in their respective buffer memory, chunks of the television channel likely to be downloaded by any one of the peers of the peer-to-peer network. The method also includes updating by the at least one monitored peer of its own list of neighboring peers by adding to this list the identifiers of neighboring peers present in the list received and which were not already present in its own list of neighboring peers. The method further includes constructing the audience measurement from the list of neighboring peers of the at least one monitored peer.

Abstract translation: 用于测量通过对等网络流式传输的电视频道的对等体的受众的方法包括将至少一个被监控的对等体连接到所述对等网络，并且由所述至少一个被监控对等体发送请求至少 对等网络的一个相邻对等体。 存在包含在其自己的邻居对等体列表中的至少一个相邻对等体的标识符。 响应该请求，由至少一个受监视的对等体接收接收通过对等网络流式传输的电视频道并且为此目的而包含的相邻对等体的列表，在它们各自的缓冲存储器中，电视频道的块可能 由对等网络的任何一个对等体下载。 该方法还包括通过向该列表添加存在于所接收的列表中的相邻对等体的标识符，并且其尚未存在于其自己的邻居对等体列表中，来通过至少一个所监视的对等体更新其自己的相邻对等体列表。 该方法还包括从至少一个被监视对等体的相邻对等体的列表中构建观众测量。

公开(公告)号：US20240053623A1

公开(公告)日：2024-02-15

申请号：US18268241

申请日：2021-12-07

Applicant: VIACCESS

Inventor： Pérez Pelage

IPC: G02C13/00 ,  A61B3/14

CPC classification number: G02C13/005 ,  A61B3/14

Abstract: This method comprises: —integrating, into an initial item, a sensor allowing measurement of a physical quantity that varies as a function both of a characteristic of the initial item and of a morphological characteristic of the user, —acquiring measurements of this sensor, to obtain a measured value, —verifying that the measured value meets a predetermined set of conditions, —when the set of conditions is not met, transmitting signal indicating mismatch of the initial term with respect to the morphological characteristic of the user, and —when the set of conditions is met, inhibiting transmission of this mismatch signal.

公开(公告)号：US20220187802A1

公开(公告)日：2022-06-16

申请号：US17310446

申请日：2019-04-02

Applicant: VIACCESS

Inventor： Alice WITTENBERG ,  Pérez PELAGE ,  Alain NOCHIMOWSKI ,  Thierry LELÉGARD ,  Dan GHITA ,  Hadrien FLAMMANG ,  Dror COHEN

IPC: G05B19/418 ,  H04L9/34 ,  G06Q50/04

Abstract: The invention concerns a method and system for manufacturing a three-dimensional part by a computer-aided manufacturing process, and an associated method and system for detecting a manufacturing process breach in a computer-aided manufacturing process of a three-dimensional part.
The three-dimensional part manufacturing comprises computing pedigree information (10) relating to the manufacturing process of the three-dimensional part, wherein the pedigree information (10) gives access to pedigree data of the manufacturing process of the three-dimensional part, the pedigree data comprising manufacturing data (8D) collected during the manufacturing process of the three-dimensional part, and inserting a mark (20) encoding the pedigree information on a surface or within a volume of the three-dimensional part, to obtain a marked three-dimensional part (24).
The detection of manufacturing process breach comprises pedigree data (42) retrieval from a marked three-dimensional part and determining whether a manufacturing breach occurred by applying classifying means to the retrieved pedigree data.

公开(公告)号：US10091178B2

公开(公告)日：2018-10-02

申请号：US15122764

申请日：2015-02-20

Applicant: VIACCESS

Inventor： Mathieu Phirmis ,  Mathieu Boivin ,  Quentin Chieze ,  Nicolas Pochon

IPC: H04L29/06 ,  G06F1/14 ,  G06F21/10

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).