Method and system for dynamically watermarking media

摘要

A dynamic watermark generation method and system in which the dynamic watermark may have a default length or a shorter length, and wherein the dynamic watermark is generated to have the determined length. The dynamic watermark is a locally-unique code that is used as an index to a database entry that identifies the subscriber that requested the media asset. In some instances, the entry may include a timestamp, a subscriber device identifier such as a MAC address or IP address, a subscriber identifier or ID number, and a media asset identifier such as a static ID. The static ID may include a code that indicates whether the dynamic watermark is of a default length or shorter. The length of the dynamic watermark may be partly based upon projected audience size for the requested media asset.

主权项

1. A method of dynamically watermarking media in a media distribution system, the method comprising:
receiving a request for a media asset from a subscriber device during a session, wherein the request includes a subscriber identifier associated with a subscriber profile; generating a dynamic watermark, including determining a length for the dynamic watermark, wherein the dynamic watermark does not include information identifying the subscriber device, identifying the subscriber identifier, or identifying the session; storing, in a watermark database, the dynamic watermark as an index to an entry storing data identifying the subscriber profile and the requested media asset; embedding the dynamic watermark in the requested media asset; and transmitting the requested media asset having the embedded watermark to the subscriber device.