Synamedia Limited

Cisco Technology, Inc.

David Livshits

Michal Irit Devir

Itai Ephraim Zilbershtein

Ezra Darshan

Vered Anikster

Samie Beheydt

Steven Jason Epstein

Assaf Yosef Tamir

Moshe Elad

Amir Hochbaum

Nadav Ramati

Golda Weyl Kilstein

Michael Joseph Burns

Techniques for securing client watermarks are described herein. In accordance with various embodiments, a server receives a request from a client device for authorizing rendering a media content item at the client device. A validation engine on the server obtains at least a portion of an image representing a screen capture of rendering the media content item including a client watermark and/or metadata associated with the rendering. The validation engine then validates the watermark based at least in part on at least the portion of the image and/or the metadata. Having invalidated the client watermark, the server causes disruption of rendering the media content item at the client device. On the client side, a watermark engine captures the image of rendering the media content item including the client watermark and requests the server to validate the client watermark and renew the authorization based on the validation.

Secure client watermark

Techniques for preventing rendering content from content delivery network (CDN) to unauthorized users are described herein. In accordance with various embodiments, a CDN includes one or more processors and a non-transitory memory. The CDN receives a request from a client device for a media content item, where the request indicates an identifier of a client. The CDN further provisions an encrypted media content item corresponding to the media content item for the client, where at least a portion of the encrypted media content item is encrypted using at least one personalized key assigned to the client. The CDN also facilitates obtaining a manifest corresponding to the encrypted media content item, where the manifest specifies encryption metadata for retrieving the at least one personalized key by the client. The CDN additionally sends the encrypted media content item and the manifest to the client device.

Methods, devices, and systems for preventing rendering content from CDN to unauthorized users

A system for multimedia content delivery includes one or more processors; and a storage medium storing instructions. When executed, the instructions may configure the one or more processors to perform operations including: delivering to a set of client devices a manifest including fake segment URLs; receiving, from a client device, a segment request including a client ID and a requested URL. The method may also include selecting content for the at least one of the client devices based on the client ID when determining the requested URL is unavailable; redirecting the segment request to a content address associated with the selected content; and providing the selected content to the at least one of the client devices.

Systems and methods for distributing content

Techniques for reducing piracy of media content are described. In some embodiments, a collusion resistant method is performed at a device, where the device receives a first request for a base copy of a media content item. In response, the device determines a first transformation based on a statistical performance criterion and a viewing performance criterion. The device further generates a first copy of the media content item by replicating and applying a first transformation to the base copy, where the first copy of the media content item satisfies the viewing performance criterion, and the first copy of the media content item is statistically different from the base copy or other copies in accordance with the statistical performance criterion. The device then causes transmission of the first copy of the media content item in combination with a first watermark for the base copy of the media content item.

Methods and systems for reducing piracy of media content

A watermark in Adaptive Bitrate (ABR) content may be provided. First, a cache miss may be determined in response to receiving a request that includes an address that points to a fake media segment. Next, in response to determining the cache miss, a pull request may be sent to an origin server. The pull request may include an identifier corresponding to a client device. Then, in response to sending the pull request, a redirect response may be received from the origin server. The redirect response may include an address of a real media segment with an embedded watermark.

Secure watermark for an adaptive bitrate client

Growing community of inventors

Geva Binyamin, Israel

David Livshits