公开(公告)号：WO2022223540A1

公开(公告)日：2022-10-27

申请号：PCT/EP2022/060284

申请日：2022-04-19

Applicant: XANDRIE SA

Inventor： POILON, Loïc ,  FROTIER DE BAGNEUX, Pierre

IPC: H04N21/854 ,  H04N21/845 ,  H04N21/835 ,  H04N21/81 ,  H04N21/4385 ,  H04N21/439 ,  H04N21/218 ,  H04N21/232 ,  H04N21/233 ,  H04N21/2389 ,  H04N21/6334 ,  H04N21/278 ,  H04N21/6377 ,  H04N21/2387

Abstract: The present invention concerns a system comprising an audio server for communicating audio data of an audio file via a network, and a database storing said audio file, the audio server comprising: an audio server network interface for communicating with the network; an audio server database interface for communicating with said database; and an audio server processor communicatively coupled with the audio server network interface and the audio server database interface, the audio server processor further configured to cause the audio server to: - segment audio data from said audio file in order to obtain at least one segment, each segment comprising a time interval of said audio data, each segment comprising a plurality of audio samples being grouped in frames, - generate a segment index and a description stream containing said segment index, said segment index comprising the position of said segments within the audio file, - generate a segment stream containing the audio data of one particular segment, at least part of said audio data being encrypted during the generation of the segment stream with an encryption key. The present invention also concerns a method for encoding audio data using a system according to the invention.

公开(公告)号：WO2022195352A1

公开(公告)日：2022-09-22

申请号：PCT/IB2022/000085

申请日：2022-02-24

Applicant: KIM, Minha

Inventor： KIM, Minha

IPC: H04N21/2389

Abstract: Systems, devices, and methods for forming and using a social network based on a space, place, event, or activity. Such a social network enables a set of people with a common interest in an event, place, activity, location, space, setting, experience, etc, to connect directly and enables the space, activity, event, or place to connect with interested people more efficiently and effectively for purposes of promotion, advertising, and offering value-adds to a person's experience with the space, place, event, or activity.

公开(公告)号：WO2022037798A1

公开(公告)日：2022-02-24

申请号：PCT/EP2020/073869

申请日：2020-08-26

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： ZLATNICZKI, Adam ,  VARGA, Botond ,  MAGYAR, Gábor

IPC: H04N21/845 ,  H04N21/2389 ,  H04N21/462 ,  H04N21/61 ,  H04N21/643 ,  H04N21/647 ,  H04N21/24 ,  H04N21/442

Abstract: There is provided a method for estimating play out resolution of a video delivered to a client device by an encrypted video stream communicated over a network. The method selects a current chunk of the encrypted video stream comprising data packets expected to carry video data of the same level of playout resolution and determines values for a predetermined set of features indicative of conditions in the network. By accessing a pregenerated model, a corresponding set of state transition probabilities is obtained, defining a Markov chain whose states comprise the different levels of resolution. The determined state transition probabilities are then used to calculate, from a first probability distribution arising from a first or previous step in the Markov chain, a second probability distribution for the plurality of states of the Markov chain expected to result from the indicated network conditions.

公开(公告)号：WO2021118992A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/063769

申请日：2020-12-08

Applicant: THE NIELSEN COMPANY (US), LLC

Inventor： CHRISTIAN, Timothy ,  RAHAMAN, Rasha

IPC: H04N19/467 ,  H04N21/8358 ,  H04N21/2389 ,  H04N21/4385 ,  G06T1/00

Abstract: Apparatus, devices, systems, methods, and articles of manufacture are disclosed for watermarking with phase shifting. An example watermark decoding apparatus includes a component detector to identify watermark components in a media signal and detect phases of the respective ones of the watermark components in the media signal. The example apparatus also includes a phase reference determiner to identify a phase reference for the watermark components. The example apparatus also includes a phase comparator to perform comparisons of the phases of the respective ones of the watermark components with the phase reference. The example apparatus also includes a phase shift determiner to determine phase shifts associated with respective ones of the watermark components based on the comparisons. In addition, the example apparatus also includes a symbol determiner to determine a symbol based on the phase shifts.

公开(公告)号：WO2021050376A1

公开(公告)日：2021-03-18

申请号：PCT/US2020/049374

申请日：2020-09-04

Applicant: THE NIELSEN COMPANY (US), LLC

Inventor： CORMIE, Steven, M. ,  JENTZ, Brian

IPC: H04N21/235 ,  H04N21/2389 ,  H04N21/435 ,  H04N21/8358

Abstract: As a media client receives a media stream for presentation, the media client could receive, in-band with the media stream, metadata identifying the media stream, such as a media-stream identifier encoded as a watermark in the media stream or carried together with the media stream in a packet-based transport stream, among other possibilities. And while the media client is processing the media stream for presentation, the media client could then convey the received metadata out-of-band to a server to enable the server to readily obtain reference fingerprints representing the media stream and to thereby facilitate, based on the reference fingerprints, a content-related action such as dynamic content modification for instance.

公开(公告)号：WO2020197177A1

公开(公告)日：2020-10-01

申请号：PCT/KR2020/003833

申请日：2020-03-20

Applicant: 삼성전자 주식회사

Inventor： 장진화

IPC: H04N21/434 ,  H04N21/2362 ,  H04N21/2389 ,  H04H60/23

Abstract: 개시된 실시예에 따른 방송 수신 장치는 ATSC3.0 규격에 따른 방송 신호를 수신하는 수신기; 적어도 하나의 인스트럭션들을 저장하는 메모리; 및 상기 방송 신호로부터 SLT(Service List Table)를 포함하는 서명(Signing)이 적용된 LLS 테이블(Low Level Signaling table)을 획득하고, 상기 획득된 LLS 테이블에 적용된 서명을 검증하기 위해 상기 LLS 테이블에서 CDT(Certification Data Table)를 탐색하며, 탐색에 따라 획득된 상기 CDT 에 근거하여 상기 LLS 테이블에 적용된 상기 서명(Signing)을 검증함으로써 상기 LLS 에 대한 인증을 수행하는 프로세서를 포함한다.

公开(公告)号：WO2020172004A1

公开(公告)日：2020-08-27

申请号：PCT/US2020/017665

申请日：2020-02-11

Applicant: THE NIELSEN COMPANY (US) LLC

Inventor： MERCHANT, Shashank, C. ,  ROPKE, Benjamin, J. ,  STAVRPPOULOS, John, S.

IPC: H04N21/2389 ,  H04N21/8358 ,  H04N21/236 ,  H04N21/4385

Abstract: A method and system for dynamically watermarking media content based on transport-stream metadata, to facilitate action by a downstream entity. An intermediary in a media-distribution path could receive a transport stream carrying media content and carrying metadata that is not watermarked m the media content. The intermediary could then obtain from the transport stream the metadata that is not watermarked in the media content and could modify the media content at least by encoding into the media content a watermark that represents the obtained metadata. And the intermediary could then output at least the modified media content for transmission to a downstream entity. The downstream entity could thus obtain from the watermark in the media content the metadata and could use the metadata to facilitate carrying out one or more useful actions.

公开(公告)号：WO2020139606A1

公开(公告)日：2020-07-02

申请号：PCT/US2019/066605

申请日：2019-12-16

Applicant: THE NIELSEN COMPANY (US), LLC

Inventor： PETRO, James ,  NELSON, Dan ,  CROSS, Deborah ,  RANGANATHAN, Raghuram

IPC: H04N21/2389 ,  H04N21/845 ,  H04N21/8358 ,  H04N21/435 ,  H04L9/32

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed selectively generating and storing hashed reference signatures. An example method disclosed herein determining whether watermark coverage of a first media segment satisfies a dropout constraint, the first media segment corresponding to a first monitoring time interval of a media source feed and, when the watermark coverage of the first media segment does not satisfy the dropout constraint hashing first media signatures associated with the first media segment to generate corresponding first hashed signatures and generating first reference data for the first media segment, the first reference data including the first hashed signatures and the first media signatures. The example method further includes, when the watermark coverage of the first media segment satisfies the dropout constraint, generating second reference data for the first media segment, the second reference data including the first media signatures.

公开(公告)号：WO2020131738A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/066609

申请日：2019-12-16

Applicant: THE NIELSEN COMPANY (US), LLC

Inventor： SMITH, Kale ,  ROPKE, Ben

IPC: H04N21/24 ,  H04N21/2389 ,  H04N21/4385 ,  H04N21/8358

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to monitor streaming media content. An example apparatus to monitor streaming media content includes a flag detector to determine if a streaming media flag is asserted in a content of a watermark associated with a media exposure event, the media exposure event included in panel data from a panel meter, the panel meter to monitor a media presentation device via an audio output channel of the media presentation device. A data selector to, when the streaming media flag is asserted: discard the media exposure event associated with the streaming media flag from the panel data and select the media exposure event from network traffic reports to credit media presented by the media presentation device, the network traffic reports obtained from a meter that monitors network traffic to and from the media presentation device.

公开(公告)号：WO2020010011A1

公开(公告)日：2020-01-09

申请号：PCT/US2019/040171

申请日：2019-07-01

Applicant: THE NIELSEN COMPANY (US), LLC

Inventor： KUZNETSOV, Vladimir ,  TOPCHY, Alexander

IPC: H04N21/8358 ,  H04N21/845 ,  H04N21/2389

Abstract: Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to extend a time range supported by a watermark are disclosed. Example watermark encoding apparatus disclosed herein include a timestamp cycle evaluator to determine which one of a plurality of timestamp cycles is to be represented by a timestamp of a watermark. Disclosed example watermark encoding apparatus also include a symbol swapper to swap at least two symbols of the watermark when the timestamp is to represent a second one of the timestamp cycles but not to swap the at least two symbols of the watermark when the timestamp is to represent a first one of the timestamp cycles. Disclosed example watermark encoding apparatus further include a watermark embedder to embed the watermark in a first piece of media.