摘要:
Phasor Measurement Units (PMUs) tend to be specialized and expensive—relegated to only key points in power distribution networks, and are generally reliant on GPS technology. The present disclosure details how any smart meter—using wireless communication—can perform sub-microsecond-grade synchrophasor measurements. Other aspects concern smart meter-based determination of A, B or C phase of the tri-phase power network. This can involve count-stamp enabling message packets sent to and/or from a smart meter, and then associating such count-stamps to local measurements of power phase by a metrology unit. Once a network of such enabled smart meters and other devices is formed, sub-microsecond metropolitan-wide and entire region-wide synchronizing time standard can calibrate local measurements of power phase, where simple A, B and C phase determination is one low hanging fruit application of such. Low cost aggregate monitoring of metropolitan-wide synchrophasors promises a next chapter of importance for that relatively recent art.
摘要:
A method of segmenting a media signal for parallel watermarking operations sub-divides the media signal into segments, distributes the segments to parallel processors, and performs parallel digital watermark operations on the segments in the parallel processors. These parallel processors may comprise separate threads of execution on a processing unit, or several execution threads distributed to several processing units. In one enhancement, the method prioritizes the segments for watermarking operations. This enables finite processing resources to be allocated to segments in order of their priority. Further, processing resources are devoted to segments where the digital watermark is more likely to be imperceptible and/or readable. A system for distributed watermark embedding operations includes a watermark signal generator, a perceptual analyzer and a watermark applicator. The system supports operation-level parallelism in the concurrent operation of watermark embedder modules, and data parallelism in the concurrent operation of these modules on segments of a media signal to be embedded with an imperceptible digital watermark.
摘要:
Methods and systems for associating objects with corresponding machine behaviors. Machine behaviors refer to responsive actions that are triggered when an object (which may be physical or electronic) is encountered. Examples of these behaviors include fetching a web page, executing software instructions, etc. A registration system enables machine behaviors to be associated with objects through use of object identifiers. For an electronic object such as an audio or video signal, the identifier can comprise a steganographic in-band watermark, a numeric ID or song/artist name field in a in a file header; a 128-bit hash value obtained by applying a hashing algorithm to the content data, the file header data, a portion thereof, etc. The disclosure particularly focuses on an embodiment utilizing stickers as objects, and watermarks as identifiers, but the technology can be implemented in many other, different, forms.
摘要:
This application relates, e.g., to processing video and audio. One claim recites a method including: utilizing a multi-purpose electronic processor programmed for analyzing a video signal to derive or calculate an identifier from data representing picture elements of the video signal or from data representing audio accompanying the video signal; providing the identifier to memory or to a remote repository to obtain advertizing information; receiving advertizing information from the memory or the remote repository; and controlling rendering of the advertizing information such that the advertizing information is synchronized with at least a portion of the video signal when rendered. Of course, additional claims and combinations are provided.
摘要:
Methods and systems for associating watermark enabled objects with machine behaviors. Machine behaviors refer to actions by devices or systems in response to a triggering event. Examples of these behaviors include fetching a web page, opening an email client to send an email to a specific person, initiating a phone or video conference call, etc. A registration system enables users to associate machine behaviors with objects through a watermark embedded in the objects. The decoding of the watermark initiates a process for triggering the machine behaviors associated with the watermarked object. While the disclosure describes an implementation for stickers as a class of watermark enabled objects, the system and related methods apply to other forms of watermark enabled objects, including both electronic and physical objects.
摘要:
Methods and apparatuses for searching for a control signal in streaming video or streaming audio that indicates the presence of a watermark in the streaming video or streaming audio. The streaming video or streaming audio is received and searched for a control signal. The detection of a control signal indicates the presences of a digital watermark in the streaming video or streaming audio. An indicator is triggered based upon detecting the control signal.
摘要:
The present invention relates generally to processing video signals. One claim recites a system for processing a video signal. The system includes: an analyzer comprising an electronic processor programmed for analyzing a video signal to derive or calculate identifying data from data representing picture elements of the video signal or from data representing audible audio portions accompanying the video signal; a communications module to communicate the identifying data to electronic memory or to a remote repository to obtain advertizing information therefrom; and a controller comprising an electronic processor programmed for controlling rendering of the advertizing information in a manner such that the advertizing information is synchronized with at least a portion of the video signal when rendered. Of course, other combinations and claims are provided too.
摘要:
Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable object, such as a character, prop, graphic, etc. Each frame of a video signal may have one or more video objects. The auxiliary information is embedded in video or audio signals using “steganographic” methods, such as digital watermarks. By encoding object specific information into video or an accompanying audio track, the watermarks transform video objects into “watermark enabled” video objects that provide information, actions or links to additional information or actions during playback of a video or audio-visual program. A similar concept may be applied to audio objects, i.e. portions of audio that are attributable to a particular speaker, character, instrument, artist, etc.
摘要:
Methods and apparatuses for searching for a control signal in streaming video or streaming audio that indicates the presence of a watermark in the streaming video or streaming audio. The streaming video or streaming audio is received and searched for a control signal. The detection of a control signal indicates the presences of a digital watermark in the streaming video or streaming audio. An indicator is triggered based upon detecting the control signal.
摘要:
A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.