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    Content-modification system with jitter effect mitigation feature
    2.
    发明授权
    Content-modification system with jitter effect mitigation feature 有权

    公开(公告)号：US11539987B2

    公开(公告)日：2022-12-27

    申请号：US17180231

    申请日：2021-02-19

    Applicant: Roku, Inc.

    Inventor： Shashank Merchant ,  Bruce William Randall ,  Brian Johnson ,  Chungwon Seo ,  Seunghyeong Lee ,  Paul Jeffrey Holmquist

    IPC: H04N21/234 ,  H04N21/2343 ,  H04N21/845 ,  H04N21/84

    Abstract: One high-level aspect of a content-modification system and related methods may involve facilitating content modification by a content-presentation device of received broadcast content in a controlled manner, while under circumstances in which some events that can impact timing may be unpredictable. In particular, certain operations by a content-presentation device may involve matching received content with specific expected content as determined by one or another component of the content-modification system, in order to confirm proper conditions are met for the content-presentation device to proceed with, or continue, content-modification operations. It can happen the matching procedure becomes subject or susceptible to timing irregularities, or jitter. In some instances, jitter may impact the ability to derive the benefits of content modification. Accordingly, example embodiments herein are directed to systems and method for compensation and/or mitigating the effects of jitter.

    Content-modification system with jitter effect mitigation feature
    3.
    发明授权
    Content-modification system with jitter effect mitigation feature 有权

    公开(公告)号：US11523149B2

    公开(公告)日：2022-12-06

    申请号：US17180289

    申请日：2021-02-19

    Applicant: Roku, Inc.

    Inventor： Shashank Merchant ,  Bruce William Randall ,  Brian Johnson ,  Chungwon Seo ,  Seunghyeong Lee ,  Paul Jeffrey Holmquist

    IPC: H04N21/234 ,  H04N21/845 ,  H04N21/84 ,  H04N21/2343

    Abstract: One high-level aspect of a content-modification system and related methods may involve facilitating content modification by a content-presentation device of received broadcast content in a controlled manner, while under circumstances in which some events that can impact timing may be unpredictable. In particular, certain operations by a content-presentation device may involve matching received content with specific expected content as determined by one or another component of the content-modification system, in order to confirm proper conditions are met for the content-presentation device to proceed with, or continue, content-modification operations. It can happen the matching procedure becomes subject or susceptible to timing irregularities, or jitter. In some instances, jitter may impact the ability to derive the benefits of content modification. Accordingly, example embodiments herein are directed to systems and method for compensation and/or mitigating the effects of jitter.

    Media Channel Identification and Action, with Disambiguation Through Client-Side Fingerprint Matching of Channel-Specific Icon
    5.
    发明申请
    Media Channel Identification and Action, with Disambiguation Through Client-Side Fingerprint Matching of Channel-Specific Icon 有权

    公开(公告)号：US20220191569A1

    公开(公告)日：2022-06-16

    申请号：US17644658

    申请日：2021-12-16

    Applicant: Roku, Inc.

    Inventor： Andreas Schmidt ,  Shashank Merchant ,  Markus Kurt Peter Cremer

    IPC: H04N21/2668 ,  H04N21/234 ,  H04N21/81 ,  H04N21/431

    Abstract: Disclosed is a method including (i) detecting that query fingerprint data representing frames of video content being rendered by a media presentation device matches reference fingerprint data representing frames of multiple channels of video content, including detecting that the query fingerprint data matches multiple instances of reference fingerprint data each representing frames of a different respective channel in the multiple channels of video content, and (ii) responsive to at least the detecting that the query fingerprint data representing the frames of the video content being rendered by the device matches the reference fingerprint data representing the frames of the multiple channels of video content, configuring the device with channel-icon fingerprint data representing channel icons of the multiple channels of video content, to enable the device to perform channel-icon fingerprint matching to determine which channel of the multiple channels is being rendered by the device.

    Content-modification system with delay buffer feature
    6.
    发明授权
    Content-modification system with delay buffer feature 有权

    公开(公告)号：US11363321B2

    公开(公告)日：2022-06-14

    申请号：US17086119

    申请日：2020-10-30

    Applicant: Roku, Inc.

    Inventor： Shashank Merchant ,  Benjamin John Ropke ,  John Steven Stavropoulos

    IPC: H04N21/262 ,  H04N21/458

    Abstract: In one aspect, a method includes an input buffer receiving content; accessing the content from the input buffer and extracting from the accessed content, in-band message data that indicates a start time associated with a content-modification opportunity for a content-presentation device; the input buffer transmitting the content to a delay buffer; the delay buffer receiving the content from the input buffer and, after a delay time-period, transmitting the content to an output buffer; the output buffer receiving the content from the delay buffer and outputting for presentation a portion of the content; and after outputting for presentation the portion of the content and proximate a time-point associated with the indicated start-time, starting to perform a content-modification operation in connection with the content-modification opportunity.

    DETECTION OF MUTE AND COMPENSATION THEREFOR DURING MEDIA REPLACEMENT EVENT
    8.
    发明申请
    DETECTION OF MUTE AND COMPENSATION THEREFOR DURING MEDIA REPLACEMENT EVENT 有权

    公开(公告)号：US20220124404A1

    公开(公告)日：2022-04-21

    申请号：US17563713

    申请日：2021-12-28

    Applicant: Roku, Inc.

    Inventor： Markus K. Cremer ,  Shashank Merchant

    IPC: H04N21/44 ,  H04N21/462 ,  H04N21/442 ,  H04N21/81 ,  H04N21/439

    Abstract: In one aspect, an example method includes (i) presenting, by a playback device, first media content from a first source; (ii) encountering, by the playback device, a trigger to switch from presenting the first media content from the first source to presenting second media content from a second source; (iii) determining, by the playback device, that the playback device is presenting the first media content from the first source in a muted state; and (iv) responsive to encountering the trigger, and based on the determining that the playback device is presenting the first media content from the first source in a muted state, presenting, by the playback device, the second media content from the second source in the muted state.

    Robust Audio Identification with Interference Cancellation
    9.
    发明申请
    Robust Audio Identification with Interference Cancellation 有权

    公开(公告)号：US20210375276A1

    公开(公告)日：2021-12-02

    申请号：US17444946

    申请日：2021-08-12

    Applicant: Roku, Inc.

    Inventor： Jose Pio Pereira ,  Sunil Suresh Kulkarni ,  Mihailo M. Stojancic ,  Shashank Merchant ,  Peter Wendt

    IPC: G10L15/20 ,  G10L15/06 ,  G10L25/81 ,  G10L15/02 ,  G10L15/10 ,  G10L21/0232 ,  G10L15/14

    Abstract: Audio distortion compensation methods to improve accuracy and efficiency of audio content identification are described. The method is also applicable to speech recognition. Methods to detect the interference from speakers and sources, and distortion to audio from environment and devices, are discussed. Additional methods to detect distortion to the content after performing search and correlation are illustrated. The causes of actual distortion at each client are measured and registered and learnt to generate rules for determining likely distortion and interference sources. The learnt rules are applied at the client, and likely distortions that are detected are compensated or heavily distorted sections are ignored at audio level or signature and feature level based on compute resources available. Further methods to subtract the likely distortions in the query at both audio level and after processing at signature and feature level are described.

    Media fingerprinting and identification system
    10.
    发明授权
    Media fingerprinting and identification system 有权

    公开(公告)号：US11120068B2

    公开(公告)日：2021-09-14

    申请号：US16387448

    申请日：2019-04-17

    Applicant: Roku, Inc.

    Inventor： Jose Pio Pereira ,  Sunil Suresh Kulkarni ,  Shashank Merchant ,  Prashant Ramanathan ,  Pradipkumar Dineshbhai Gajjar

    IPC: G06F16/00 ,  G06F16/48 ,  G06F16/41 ,  G06F16/28 ,  G06F16/783 ,  G06F16/951 ,  G06F16/22 ,  G06F16/901 ,  G06K9/00 ,  G06K9/46

    Abstract: The overall architecture and details of a scalable video fingerprinting and identification system that is robust with respect to many classes of video distortions is described. In this system, a fingerprint for a piece of multimedia content is composed of a number of compact signatures, along with traversal hash signatures and associated metadata. Numerical descriptors are generated for features found in a multimedia clip, signatures are generated from these descriptors, and a reference signature database is constructed from these signatures. Query signatures are also generated for a query multimedia clip. These query signatures are searched against the reference database using a fast similarity search procedure, to produce a candidate list of matching signatures. This candidate list is further analyzed to find the most likely reference matches. Signature correlation is performed between the likely reference matches and the query clip to improve detection accuracy.

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