119 results about "Source tracking" patented technology

An on-line reorganization facility (ORF) uses index data-spaces that point to other data-spaces, referred to as data data-spaces, to efficiently track and coordinate information about the data-elements in an original data-space operated upon by a reorganization process. A relative base address of a data-element in an index data-space can be derived from a relative base address of a data-element in an original data-space, and vice versa. An index data-space data-element contains a location of a data-element in a data data-space that tracks change information related to a corresponding data-element in the original data-space. Tracked changes are later applied to the newly reorganized data-space to assure consistency and integrity of the data. Tracked changes include the location in the original data-space where the change occurred and a flag indicting the type of change.

The invention discloses a block chain logistic source tracking anti-fake method based on NFC (Near Field Communication). The method is based on a source tracking anti-fake system and comprises a publicly verifiable block chain background system, a block chain gateway system, a mobile intelligent read-write terminal, a cash databank and an NFC (IC) (Integrated Circuit) or internal NFC (IC) anti-fake label. The method comprises the following steps: generating an anti-fake label; initializing the anti-fake label; activating by a producer; adding information by a middleman; and verifying by a final user; after the anti-fake label is scanned at the read-write terminal each time, substituting a hidden password on an NFC chip and a corresponding visible password in a block chain by newly generated hidden passwords and visible passwords, and disabling the used hidden password and the visible password. By adopting the method, problems of trust dependence of users upon nodes in different product logistic procedures, trust dependence upon a third party, dependence upon techniques, trust dependence upon anti-fake labels and trust target deviation are solved, the introduction threshold is low, and the anti-fake security and reliability can be greatly improved.

Bytecode is injected to create a source tracking object for a data object received from a data source and to record information associated with the data source into the source tracking object. Bytecode is injected to create a copy of the data object for a tracking event in an application program, to create a flow tracking object for the tracking event, and to record information associated with the tracking event into the flow tracking object as the tracking event processes the copy of the data object. Bytecode is injected to create a sink tracking object for outputting the copy of the data object to a data sink and to record information associated with the data sink into the sink tracking object. Bytecode is injected to output the source tracking object, the flow tracking object, and the sink tracking object as dynamic analysis of dataflow in the application program.

An arrangement and a method of localizing active speakers in a video conference includes a localization device that locates at least one microphone relative to the camera, while the at least one microphone in turn localizes the relative positions of audio sources. As the microphones are usually positioned close to the audio source in a video conference, the ratio of the distance between microphones relative to the distance between table microphone and audio source is reduced. Thus, the microphones are able to determine the positions of the audio sources with a higher resolution than if placed close to the camera. When the respective positions of the microphones relative to the camera and the audio source are known, the position of the audio source relative to the camera is then determined by means of geometrical calculations.

The invention discloses a heat source tracking method based on a thermal infrared imager. The method comprises the following steps: when a holder rotationally runs to a preset position, obtaining an infrared video stream of a monitoring scene sent by the thermal infrared imager, wherein the infrared video stream comprises infrared original raw data; performing scanning analysis on the infrared original raw data to judge whether a target heat source exists in a deployment area of the preset position; when the target heat source exists, calculating position coordinates of the target heat sourcein the monitoring scene; triggering a high definition camera, and rotating the holder according to the position coordinates of the target heat source, so that the target object is always located at the video central points of the thermal infrared imager and the high definition camera, and then the high definition camera tracks the target heat source and records a high definition video stream, wherein both of the thermal infrared imager and the high definition camera are installed on the holder. The invention further discloses an electronic device, a storage medium and a heat source tracking system. By adoption of the heat source tracking method disclosed by the invention, the defects of heat source tracking based on the high definition camera in the prior art are solved.

The invention discloses a method for hacker behavior discovery and analysis based on linkage of intrusion detection and vulnerability scanning. Through linkage of an intrusion detection technology and a vulnerability scanning technology, an attack is accurately positioned or a suspicious hacker behavior is discovered, so that the hacker intrusion behavior is timely intervened to avoid loss before the hacker intrusion behavior is successful, and furthermore, an attack source is analyzed and discovered through an attack source tracking technology, and the subsequent attack behavior of the attack source is prevented by utilizing the technologies, such as blacklist.

An apparatus for processing passive acoustic signals received on a horizontal line array that were either emitted from an underwater object or echo returned from an object, is proposed to track the motion (bearing change and range change) of an object (target) relative to the receiver horizontal line array. Adaptive array processing for a moving object is biased for a moving source when the number of data samples is limited by the stationariness condition. Motion compensation can be carried out in the beam domain by beam shifting for a bearing changing object and frequency shifting for a range changing object. The method includes receiving acoustic signals from the target, determining the beam covariance matrices, determining the target bearing rate and range rate, processing the beam covariance matrices by compensating for the target motion, and producing a beam power plot versus time. Interference signal is suppressed when the interference source does not have the same motion (bearing and range rate) as the target. The method does not need detailed environmental acoustic information of the sound channel normally required to model the sound propagation.

The invention relates to a water supply pipe network pollution source tracking and positioning method based on user complaint information. The method comprises the following steps of S1, generating apollution matrix by using position information complained by a user; S2, judging the similarity among the candidate nodes and dividing the similarity; S3, increasing random complaint lag time and constructing a user complaint sample; And S4, carrying out training verification test on the convolutional neural network by using the complaint sample of the user, and applying the convolutional neural network to actual pollution source tracking and positioning. Compared with the prior art, according to the real-time user complaint information after the pollution accident happens, the user complaintmode recognition is adopted for pollution source positioning, the good pollution source recognition capability is achieved for water source pollution and non-water-source pollution, and certain robustness is achieved for uncertainty of the user complaint lag time. In the cities with incomplete pipe network water quality on-line monitoring equipment, the system has the advantages that the pollutionsource position can be quickly positioned, and the emergency response capability of cities to pipe network water quality accidents is enhanced.

Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.