公开(公告)号：WO2023036523A1

公开(公告)日：2023-03-16

申请号：PCT/EP2022/071793

申请日：2022-08-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： GE, Xin ,  GU, Hai ,  MA, Fulong

IPC: H04N21/8358 ,  H04N21/4627 ,  G06F21/10 ,  H04N21/4367 ,  H04N21/6334

Abstract: :Proposed are concepts for checking the locality of devices to determine if data (e.g. media content) can be shared between the devices, which may therefore aid secure sharing of data or media content between the devices. In particular, it is proposed that a simple way to check if two devices are in/at the same location (i.e. in close vicinity of each other) is to check if they are visible to each other. By one device displaying information to the other device, the displayed information can be used to confirm that the devices are visible to each and thus infer a shared locality. Such information may comprise (or be based on) information that should only be known to the two devices, thereby facilitating verification of the devices.

公开(公告)号：WO2022235084A1

公开(公告)日：2022-11-10

申请号：PCT/KR2022/006422

申请日：2022-05-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： LIM, Youngkwon

IPC: H04N21/4627 ,  H04N21/434 ,  H04N21/435 ,  H04N21/254 ,  H04N21/235

Abstract: A decoding device includes a communication interface and a processor operably coupled to the communication interface. The communication interface receives at least a portion of a broadcast stream including media data, which includes media samples. The processor identifies information elements containing DRM processing information in the broadcast stream. Each information element is associated with a respective one media sample of the media data. For each information element, the processor also identifies the one media sample that is associated with the information element. The processor further identifies, based on the information element, the DRM processing information for the one media sample. In addition, the processor decodes the one media sample based on the DRM processing information.

公开(公告)号：WO2022132507A1

公开(公告)日：2022-06-23

申请号：PCT/US2021/062262

申请日：2021-12-07

Applicant: NETFLIX, INC.

Inventor： TURMEL, Frederic ,  WOLFE, Alexander David ,  LEHMAN, Matthew Michael

IPC: H04N21/8358 ,  H04N21/44 ,  H04N21/4627 ,  H04N21/4402 ,  G06T1/00

Abstract: Various embodiments set forth systems and techniques for securing media content capture capabilities on a device. The techniques include receiving a frame of a media content item; determining whether the frame of the media content item is signed based on an analysis of one or more pixels of the frame; and when the media content is signed, removing one or more restrictions on one or more functions on the device based on whether the one or more pixels on the frame meet one or more conditions, wherein the one or more functions enable the device to perform one or more operations on the frame of the media content item.

公开(公告)号：WO2020106280A8

公开(公告)日：2020-05-28

申请号：PCT/US2018/062047

申请日：2018-11-20

Applicant: ROVI GUIDES, INC.

Inventor： GRIGORE, George

IPC: H04N21/436 ,  H04N21/6405 ,  H04N21/6408 ,  H04N21/414 ,  H04N21/4627 ,  H04N21/4788 ,  H04N21/61 ,  H04N21/431 ,  H04N21/45

Abstract: Systems and methods are disclosed herein for distributing content over a local area network (LAN) between a first device within the LAN and a second device within the LAN. A first device multicasts a LAN-specific content beacon over the LAN. The LAN-specific content beacon includes an identifier uniquely identifying the first device. A second device sends a response to the LAN-specific content beacon requesting secondary content to be integrated into a display of the second device. The first device generates the secondary content based on profile information associated with the second device and unicasts the secondary content to the second device for integration into primary content being generated for display at the second device.

公开(公告)号：WO2020077218A1

公开(公告)日：2020-04-16

申请号：PCT/US2019/055851

申请日：2019-10-11

Applicant: HOME BOX OFFICE, INC.

Inventor： FURTWANGLER, Steven N. ,  BUSAYARAT, Sata ,  FURTWANGLER, Brandon D.

IPC: H04N21/4335 ,  H04N21/4627 ,  H04N21/6334 ,  H04N21/81 ,  H04N21/462

Abstract: The described technology is directed towards evaluating client-specific information and possibly other information to determine whether to return less data than is available for a data item in response to a request for graph node data to a data service, and/or return expanded graph node data. When a request for graph data is received, client-specific information is used at least in part by a data service in determining whether to return a virtual graph node comprising a relatively lightweight set of information relative to the full set of information maintained in a main (graph) node. The client-specific information is also used in determining whether to return expanded data beyond that requested, e.g., for caching at the client in anticipation of it likely being needed by the client.

公开(公告)号：WO2019018767A1

公开(公告)日：2019-01-24

申请号：PCT/US2018/043091

申请日：2018-07-20

Applicant: SLACK TECHNOLOGIES, INC.

Inventor： JIN, Brenda ,  JAMISON, Britton

IPC: G06F21/62 ,  H04N21/4627 ,  G06Q10/10

Abstract: Embodiments of the present disclosure provide methods, systems, apparatuses, and computer program products for digital content auditing in a group based communication repository, where the group based communication repository comprises a plurality of enterprise- based digital content objects organized among a plurality of group-based communication channels. In one embodiment, a computing entity or apparatus is configured to receive an enterprise audit request, where the enterprise audit request comprises an audit credential and digital content object retrieval parameters. The apparatus is further configured to determine if the audit credential satisfies an enterprise authentication protocol. In circumstances where the audit credential satisfies the enterprise authentication protocol, the apparatus is configured to retrieve and output digital content objects based on the digital content object retrieval parameters, receive a violating digital content object identifier, and replace a violating digital content object with a temporary digital content object based on the violating digital content object identifier.

公开(公告)号：WO2018221293A1

公开(公告)日：2018-12-06

申请号：PCT/JP2018/019485

申请日：2018-05-21

Applicant: ソニー株式会社

Inventor： 内村　幸一 ,  上田　健二朗

IPC: H04N5/926 ,  G11B20/10 ,  G11B20/12 ,  G11B27/00 ,  H04N5/913 ,  H04N21/433 ,  H04N21/4627 ,  H04N21/8355

Abstract: ＭＭＴフォーマットデータをＭＰＥＧ－２ＴＳＶフォーマットデータに変換してメディアに記録し、元のコピー制御情報に従ったコピー制御を可能とする構成を実現する。コピー制御情報の設定されたＭＭＴフォーマットデータを入力し、ＭＰＥＧ－２ＴＳフォーマットデータに変換して情報記録媒体に記録する。ＭＭＴフォーマット規定のサービス記述テーブル（ＭＨ－ＳＤＴ）に記録されたコピー制御情報を取得し、予め規定した変換規則に従って、ＭＰＥＧ－２ＴＳ規定のプログラムマップテーブル（ＰＭＴ）に記録するコピー制御情報を生成する。例えば変換規則に従って、ＰＭＴに記録するＥＰＮ、ＣＣＩの値を決定して記録する。

公开(公告)号：WO2018205512A1

公开(公告)日：2018-11-15

申请号：PCT/CN2017/109080

申请日：2017-11-02

Applicant: 深圳创维数字技术有限公司

Inventor： 洪德胜

IPC: H04N21/41 ,  H04N21/426 ,  H04N21/4627

CPC classification number: H04N21/41 ,  H04N21/426 ,  H04N21/4627

Abstract: 本发明实施例涉及计算机技术领域，公开了一种信息加解密方法、机顶盒、系统及存储介质，该机顶盒包括可编程逻辑器件PLD芯片，该方法包括：获取原始信息，所述原始信息为所述机顶盒从接收到的数字信号中获取的信息；利用所述PLD芯片对所述原始信息进行加密操作后，获得目标信息；获得所述目标信息后，将所述目标信息保存至所述机顶盒。采用本发明实施例，一方面，不仅可以有效地减少CPU的负担，提高加密操作的效率；另一方面，通过PLD芯片对信息进行处理，增加系统的可移植性。

公开(公告)号：WO2018080693A1

公开(公告)日：2018-05-03

申请号：PCT/US2017/053477

申请日：2017-09-26

Applicant: NETFLIX, INC.

Inventor： MEHTA, Manish

IPC: H04L9/32 ,  G06F7/72 ,  H04L9/30 ,  G06F21/10 ,  H04L29/06 ,  H04N21/4627

CPC classification number: H04L63/0442 ,  G06F7/723 ,  G06F21/10 ,  H04L9/0861 ,  H04L9/302 ,  H04L9/3249 ,  H04L9/3257 ,  H04L2209/04 ,  H04N21/4627

Abstract: Different clients encrypt secrets using a server's public RSA key, blind them using randomly generated onetime use blinding factors, and bind them to unique identifiers of corresponding client policies. Encrypted, blinded secrets bound to unique policy ids are transmitted to the server. The server processes different encrypted, blinded secrets received from different clients according to the bound policies. Processing an encrypted blinded secret can involve decrypting it using the corresponding policy id and the server' s private key, resulting in a decrypted but still blinded secret which is not readable by the server. The server can then transmit the decrypted blinded secret to one or more clients according to the policy. A client that receives the decrypted blinded secret can unblind and read the secret as plaintext, provided the client has the policy id and the unblinding factor.

Abstract translation: 不同的客户端使用服务器的公共RSA密钥对秘密进行加密，使用随机生成的一次性盲目因素对其进行盲注，并将它们绑定到相应客户端策略的唯一标识符。 将绑定到唯一策略ID的加密的秘密秘密传输到服务器。 服务器根据绑定策略处理从不同客户端接收到的不同加密的，不知道的秘密。 处理加密的秘密秘密可能涉及使用相应的策略ID和服务器的私钥对其进行解密，从而导致解密但仍然不知道的秘密，这是服务器无法读取的。 服务器然后可以根据该策略将解密后的隐蔽秘密传输给一个或多个客户端。 接收到解密的秘密秘密的客户端可以解密并将秘密读取为纯文本，只要客户端具有策略ID和解除盲区的因素即可。

公开(公告)号：WO2018072685A1

公开(公告)日：2018-04-26

申请号：PCT/CN2017/106545

申请日：2017-10-17

Applicant: 中兴通讯股份有限公司

Inventor： 李姗姗

IPC: H04N21/4627 ,  H04N21/254 ,  H04N21/4405

CPC classification number: H04N21/254 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/6334

Abstract: 一种数据流播放方法和装置，数据流类型信息的传输方法和装置，以及计算机存储介质，获取待播放数据流的类型信息；当获取到的所述类型信息为数字版权管理加密标识信息时，请求进行数字版权管理认证；当所述数字版权管理认证通过时，对所述待播放数据流进行播放。