| 摘要 |
<p>An ancillary code is extracted from the media signal by monitoring the media signal during a first time interval according to a first monitoring parameter, evaluating the media signal to detect an ancillary code and optionally monitoring the media signal during a second monitoring time interval depending on an outcome of the evaluation of the media signal. In different iterations, different data acquisition window durations and/or overlaps are applied according to a factor such as an iteration count or a detection confidence level.</p> |
