Patent attributes
Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to implement power efficient detection of watermarks in media signals are disclosed. Example watermark detection methods disclosed herein include operating a watermark detector in a first operating mode to search for a first watermark in a media signal. Such disclosed example methods also include, in response to detecting the first watermark, determining whether the first watermark satisfies a first condition. Such disclosed example methods further include, in response to determining the first watermark satisfies the first condition, operating the watermark detector in a second operating mode in which the watermark detector cycles between a sleep interval and an active interval to detect a second watermark at a second location in the media signal relative to a first location of the first watermark in the media signal.
