초록 ▼

The invention relates to methods, devices and systems for reconfiguring a watermark detector. In many applications, it is useful to be able to change the operation of a watermark detector. Such changes may include changing how the watermark detector decodes or interprets a watermark embedded in a si

The invention relates to methods, devices and systems for reconfiguring a watermark detector. In many applications, it is useful to be able to change the operation of a watermark detector. Such changes may include changing how the watermark detector decodes or interprets a watermark embedded in a signal of a given media type, such as audio, video or still images.

대표청구항 ▼

1. A method for controlling operation of a device using a watermark comprising:decoding a watermark embedded in a signal of a media type, where the watermark includes a command signal used to trigger a change in operation of the watermark detector; based on the command signal, changing operation of

1. A method for controlling operation of a device using a watermark comprising:decoding a watermark embedded in a signal of a media type, where the watermark includes a command signal used to trigger a change in operation of the watermark detector; based on the command signal, changing operation of the watermark detector, including changing how the watermark detector decodes or interprets a watermark in a signal of the media type; after changing operation of the watermark detector, decoding a usage control restriction from a watermark embedded in the signal, wherein the watermark is perceptibly adapted to the signal such that the watermark is hidden in human perceptible portions of the signal and the usage control restriction controls transfer or copying of the signal in which the watermark is embedded.