Orchestrated encoding and decoding

摘要

Orchestrated encoding schemes facilitate encoding and decoding of data in content signals at several points in the distribution path of content items. Orchestrated encoding adheres to a set of encoding rules that enables multiple watermarks and corresponding applications to co-exist, avoids collisions among watermarks, and simplifies metadata and routing database infrastructure.

主权项

1. A method of digital watermark processing, the method comprising:
receiving an audio signal; with one or more processors: performing a watermark decoding on the audio signal to extract, from the audio signal, a first electronic payload signal embedded in a preexisting watermark layer in the audio signal with a first pseudorandom mapping to time-frequency locations in the audio signal, the first electronic payload signal providing a reference to first metadata; from the watermark decoding, determining a watermark state of the audio signal; evaluating a watermarking rule based on the watermark state to determine new watermark encoding to apply to the audio signal to comply with the watermarking rule; and performing the new watermark encoding on the audio signal to embed a new watermark layer into the audio signal, the new watermark layer comprising a second electronic payload signal encoded with a second pseudorandom mapping to time-frequency locations; wherein the new watermark layer references the first metadata and second metadata, the second metadata being referenced by the second electronic payload signal.