Thursdays the USPTO publishes new pending patent applications. Today's Spotlight Applications concern aspects of digital fingerprinting and digital watermarking. Assigned to Verance, the first application discloses techniques for thwarting analysis of a watermarking system by preventing analysis of watermarks in a host content. Assigned to AT&T Mobility, the second application discloses techniques for dynamic content selection through timed fingerprint location data.
20130007462, "Circumvention of watermark analysis in a host content," assigned to Verance.
Abstract
Methods and devices are provided to thwart analysis of a watermarking system by preventing analysis of watermarks in a host content. Upon receiving a content at a watermark embedding device, the content is analyzed to ascertain whether one or more test features are present in at least a first portion of the received content. When the analysis reveals that one or more test features are present, embedding of watermarks in at least the first portion of the received content is disabled. The test features of interest include a temporal, a spatial and/or a frequency characteristic such that, if a region of the content that includes test feature is embedded with a watermark, at least one characteristic of the embedded watermark is detectable upon analysis of that region. The test feature can, for example, approximate an impulse signal, a step function signal or a pure sinusoidal signal.20130007058, "Dynamic content selection through timed fingerprint location data," assigned to AT&T Mobility.
Abstract
The disclosed subject matter provides for employing timed fingerprint location (TFL) information in dynamically selecting a subset of content from a set of content. TFL information can provide location information for user equipment without employing conventional location techniques. As such, TLF information can provide for location-centric selection of content. Further, secondary information correlated to TFL information can be received and employed in dynamic content subset selection. In an aspect, rules can be employed to predict the future location of a user equipment such that dynamic content selection can be tailored to the predicted future position of the user equipment. Moreover, privacy components can be employed to limit the propagation of sensitive information
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