Wireless Media Device Selection via Audio Watermark Classification

The patent segments the building into multiple media zones, with each zone containing one or more media devices. Each device is assigned a unique device ID and associated with specific spatial coordinates. This segmentation allows the system to distinguish between devices with identical names by their spatial location and unique identifiers, resolving the selection accuracy issue while maintaining broad device coverage.

The patent introduces an intermediary classification process that uses audio watermarks or preambles transmitted by media devices. The mobile device captures these signals and classifies them against stored signatures to identify the correct device. This intermediary classification mechanism enables accurate device selection even when devices have identical names and are located in different rooms.

The patent implements preliminary actions by having media devices transmit audio watermarks or preambles before formal connection establishment. The mobile device captures and stores these signatures in advance, creating a reference library for later classification. This preliminary action ensures that even when devices are in separate rooms with obstructed signals, the mobile device has pre-stored signatures to match against, maintaining reliable detection.

The patent replaces traditional wireless signal strength-based device selection with an acoustic classification system. Instead of relying on radio signal propagation that is blocked by walls, the system uses audio watermarks transmitted through air, which can penetrate obstacles more effectively. The mobile device's microphone captures these audio signals, and the classifier matches them against stored signatures, substituting acoustic detection for electromagnetic signal detection.

The patent implements self-service by enabling the mobile device to automatically classify and select the correct media device without user intervention. The classifier uses captured audio watermarks or preambles to identify the target device, automatically establishes connection, and initiates media playback. This self-service mechanism maintains high selection accuracy while eliminating the need for manual device selection, reducing both user burden and perceived system complexity.

The patent incorporates feedback mechanisms where the mobile device continuously monitors audio signals from surrounding media devices, classifies them in real-time, and adjusts its selection based on the current environment. The system provides feedback to the user about which device is being selected and why, based on the classified audio signature. This feedback loop maintains accuracy while automating the selection process, reducing user burden.

The patent implements periodic action by having media devices transmit audio watermarks or preambles at specific intervals rather than continuously. During initialization or when a media device enters a media zone, the device transmits its audio signature. After classification is complete, transmission ceases or reduces frequency. This periodic transmission maintains classification accuracy while significantly reducing energy consumption compared to continuous transmission.

The patent applies partial action by transmitting audio watermarks or preambles only when necessary - specifically during device initialization, when entering a new media zone, or when connection establishment is required. The system does not transmit these signals continuously or unnecessarily, using them only in the partial instances when classification is needed. This approach maintains classification accuracy while minimizing energy expenditure on audio transmission.