New pending patent applications are published by the USPTO on Thursdays. Today's Spotlight Applications concern aspects of digital fingerprinting and digital watermarking. Assigned to GE, the first application discloses techniques to characterize noises sensed by a knock sensor. Assigned to Verance, the second application discloses techniques for service signaling recovery for multimedia content using embedded watermarks.
20160187219, "Methods and systems to characterize noises sensed by a knock sensor," assigned to General Electric
A method of characterizing a noise signal includes receiving a noise signal sensed by a knock sensor coupled to a reciprocating device, preconditioning the noise signal to derive a preconditioned noise signal, applying an ADSR envelope to the preconditioned noise signal, extracting tonal information from the preconditioned noise signal, and creating a fingerprint of the noise signal based on the ADSR envelope, the tonal information, or a combination thereof.
20160182973, "Service signaling recovery for multimedia content using embedded watermarks," assigned to Verance.
Methods, devices, systems and computer program products facilitate accessing metadata associated with a primary audio visual content. Upon reception of a primary content, one or more watermark messages are extracted from the primary content obtain a server code and an interval code. A query to a metadata server is initiated based on the information obtained from the extracted watermark messages. In response to the query, service recovery information is received that includes information identifying one or more timed events, where each timed event identifies an operation to be performed at a corresponding instance in time as the primary content is being presented by the receiver device. One or more operations identified the timed events are initiated at the corresponding instance(s) in time.