New pending patent applications are published by the PTO on Thursdays. Both of today's Spotlight Applications concern aspects of digital watermarking. Assigned to wayStorm (TW), the first application discloses an advertisement distribution system and method for controlling operations of mobile electronic device. Assigned to Cisco, the second application discloses techniques for using a watermark with data integrity verification.
20150201155, "Advertisement distribution system and method for controlling operations of mobile electronic device thereof", assigned to wayStorm Co. Ltd (TW).
An advertisement distribution system and a method for controlling operations of a mobile electronic device thereof are provided. The mobile electronic device has a display, a microphone and a display. A media player generates sound by playing a medium which contains an audio watermark, and the microphone converts the sound into an electrical signal. The mobile electronic device decodes the electrical signal to obtain the audio watermark. Based on the obtained audio watermark, the display may display a specific advertisement thereon.
20150200773, "Watermark with data integrity verification," assigned to Cisco.
In one embodiment, a system including a processor is operative to receive a content item including a watermark encoding a series of encrypted bits deriving from encrypting an information element multiple times, extract at least some encrypted bits from at least part of the watermark, decrypt a series of N bits using a first key yielding a first value, the series of N bits including Q bits of the encrypted bits and K, greater than, or equal to zero, guessed bits, re-encrypt the first value using a second key yielding a second value, and compare at least part of the second value to M bits of the encrypted bits to determine if at least part of the second value matches the M bits in order to provide a level of confidence that the first value is the information element which was encrypted and embedded as the watermark.