105 results about "Proximity measure" patented technology

A proximity measuring apparatus (70) comprises an interrogator (80) for generating an interrogation signal encoded with a reference signature code comprising concatenated codes and emitting it as interrogating radiation. It also incorporates a transponder (90) for receiving the interrogating radiation, demodulating it to extract its signature code and then remodulating it after a delay period to provide a signal for reemission as return radiation therefrom. The interrogator (80) receives return radiation at its antenna (260) and demodulates it to extract its signature code and then correlates the code with the reference code to determine mutual correlation thereof. The interrogator (80) incorporates a computer (290) for controlling a scan direction of the antenna (260) and for measuring time delay between emission of the interrogating radiation therefrom and receipt of corresponding return radiation. The computer (290) computes distance and relative bearing of a transponder (90) providing the return radiation from the scan direction and the time delay. The apparatus (70) may be used for improving road vehicle safety.

A method of comparing the closeness of a target tree to other trees located in a database of trees, said method comprising the steps of: (a) calculating a constraint in respect of each tree in the database based on an estimated number of edit operations and a characteristic of the target tree; (b) calculating a constrained tree edit distance between the target tree and each tree in the database using the constraint obtained in step (a); and (c) comparing the calculated constrained tree edit distances. The method can also be applied to matching a target tree representable structure to its closest tree representable structure.

A mechanism for achieving resiliency and load balancing for SIP application services and, in particular, in geographic distributed sites. A method performs a distribution of SIP requests among SIP servers, where at least two sites with a load balancer in each site is configured. The method includes receiving a SIP request by a first load balancer in a first site; determining whether the SIP request should be redirected to a second site; and redirecting the SIP request to an address of a second load balancer in the second site. The invention also includes a SIP proxy including a receiving unit receiving SIP requests; a load balancing unit distributing SIP requests between SIP entities; and a health monitoring unit verifying availability of the SIP entities. The SIP proxy may further be configured with a proximity measuring unit determining a proximity to a SIP entity.

A system for automatic proximity-based preloading of relevant information in portable devices pre-loads a portable device such as a mobile telephone, a personal digital assistant (PDA) or portable computer before the occurrence of a trip or event, with information relevant to the user's current or upcoming tasks. The system locates and loads into the portable device only the information required by the user for near term projects, meetings, or trips. The system is generally comprised of an information catalog, a proximity estimator, a relevance estimator, an information retriever, and a device loader. The information catalog contains a list of the information sources and items to which the user has access and from which the system of the invention will retrieve data to be loaded into the mobile device. The proximity estimator determines the proximity of various relevant information items to the user's tasks based on distance, time, and/or association. The relevance estimator combines these proximity measures into a single relevance score. The most relevant information is retrieved by the information retriever and loaded onto the portable device by the device loader.

Character recognition includes detecting a union of characters, preprocessing the union of characters, comparing the preprocessed union of characters with one or more template symbols, and applying a decision rule to either reject a template symbol or decide that the template symbol is included in the union of characters. Such preprocessing involves representing the union of characters as one or more curves, and parameterizing the curve(s); and, regarding various classes of transformation, forming one or more shapes for the curve(s). The comparing operation involves forming one or more geometric proximity measures, and determining for every shape the values of those measures between the shape and correspondingly determined shapes for the template symbols. Applying a decision rule involves selecting one or more template symbols in consideration of the values.

In accordance with the present invention, a method for determining a centerline through a region of interest in a 3D image dataset is provided. The method includes identifying the boundaries of the region of interest and identifying the endpoints of the region of interest. For those points within the boundaries, a penalty value which is a function of the proximity of the point to a boundary is determined. A centerline is then identified by the path connecting the endpoints which has the minimum penalized distance wherein the penalized distance reflects the actual accumulated pathlength and the penalties associated with the points along the path. From the centerline, branches of a complete skeleton can be established by determining branch endpoints and then finding the minimum penalized distance from each endpoint the centerline or another intersecting branch.

Overlay network peers may be grouped so that each peer in a peer group has a similar transport network proximity measure with respect to the peers in other peer groups. A first set of transport network distances may include distances between a peer group and peer group neighbors of the peer group. A second set of distances may include distances between a peer and the peer group neighbors of the peer group. The peer may decide to join the peer group if the first set of distances is near to the second set. A first peer group may query a second peer group for the second peer group's neighboring peer groups. The distance between the first peer group and each of the second peer group's neighbors may be measured. Overlay network connections may be established between the first peer group and the closest of the second peer group's neighbors.

A system for determining proximity of a surgical device relative to nerve structure includes at least one surgical device having a sensor assembly operably coupled to a processing unit and configured to transmit at least one electrical signal generated by the processing unit through nerve structure to elicit a measurable response there from. The processing unit is configured to calculate a signature property value of nerve structure based on the measurable response and to determine proximity of the nerve structure to the surgical device based on the measurable response. The processing unit is further configured to test the nerve function after completing the surgical procedure.

A touch screen controller produces a first signal (DATA) representative of a self capacitance (Cselfj) of a touch screen (13A) during a presence scanning mode and representative of mutual capacitances (Cmij) of the screen during a location scanning mode. The first signal is calibrated during the presence scanning and during the location scanning to produce a second signal (ΔDATA) which may represent either self-capacitance changes (ΔCselfj) caused by proximity of an element (22) during presence scanning or mutual capacitance changes (ΔCmij) caused the element during location scanning. The second signal is operated upon during presence scanning to determine to determine proximity of the element relative to the screen and during location scanning to produce a magnitude map of the mutual capacitance changes.

Computer-implemented systems and methods for synthesis of concept definitions and concept relationships from a domain of data, utilizing different semantic processing protocols such as formal concept analysis and faceted classification synthesis from existing domain concepts that have a confidence gradient built into them. A cognitive or an input agent provides an input of an active concept which is matched against existing domain concepts. The resultant pool of relevant domain concepts is then used to derive virtual concept definitions using a semantic processing protocol. The derivation is then overlaid with a concept of relative proximity of an attribute from another within an attribute set. An additional layer of coherence is given by the relative proximity measure. The end result is a pool of related virtual concept definitions in a tree structure.

A method for providing an order includes receiving an identifier for a customer order, which is to be provided at a merchant location, and a customer mobile device identifier through a network at a tracking device. The identifier for the customer order is associated with the customer mobile device identifier. A location of a customer mobile device that is associated with the customer mobile device identifier is determined. A distance between the customer mobile device and the merchant location is determined. The identifier for the customer order along with arrival information for the customer that is based on the distance between the location of the customer mobile device and the merchant location is then provided for display. A merchant at the merchant location may then make determinations about how to provide the customer order based on the customer arrival information.

The invention features a rectangular 3-D modeling grid called a display environment that may be mapped to one or more sensor(s) to provide a heads up display device the ability to generate and view an Augmented Reality first; person view of custom 3-D objects. Location sensors create the positioning and perimeter of the display environment. The Display Environment may Sbe navigated by the combination of the display device's physical movement sensed by motion sensors and the display device's physical location based on its proximity to synchronized location sensors. Sensors on the display device recognize when the device is moving with respect to the Display Environment to initiate re-rendering of its 3-D model being displayed. Movement of the display device enable first person 3-D model illustrative and perspective views which may also be used to design 3-D models with customizable scale, orientation, positioning physics, and artificial intelligence.

A method and system provide for conducting of trades. A request is transmitted from one party, about an item the party is willing to trade. Rules are specified about what will be acceptable. Responses are received from other parties concerning requests which are responsive to the rules. A trade is conducted with one or more parties responding in accordance with the rules.

Systems, apparatus and methods for proximity determination between transceivers, such as mobile devices, are presented. Proximity may be a logical combination of geographic proximity, radio proximity and/or cellular proximity. Proximity may be determined using a low overhead coarse test followed by a more intensive accurate test. Proximity may be determined indirectly via one or more intermediary transceivers having a predetermined relationship.

A system for guiding of the visually handicapped includes a continuous electrical conductor, in the nature of a wire or strip, having a substantially uniform conductivity embedded within a walkway to be traversed by the handicapped person. The system also including a proximity for detecting the conductor in which the detector may be in a shoe of the user or a tip of a walking cane. The system further includes a signalling element, in the nature of a vibrator, in electrical communication with the detector such that, through the presence of such vibration, the visually handicapped person is able to determine his proximity to the electrical conductor to determine that he is proceeding in a proper direction within or along the walkway. The signalling element is preferably provided with a switch, for example, a mercury switch, so that the shoe or cane circuit will become energized only upon the occurrence of movement or motion of the shoe or cane within which the proximity detector is located. The approach by a user to a location of interest along the walkway, such as an intersection, bathroom, or Braille telephone, may be indicated through the provision of a pattern of irregularity of the conductivity within the continuous electrical conductor. Different patterns of irregularity may indicate different advisories to the user.

A speech receiving unit receives a user ID, a speech obtained at a terminal, and an utterance duration, from the terminal. A proximity determining unit calculates a correlation value expressing a correlation between speeches received from plural terminals, compares the correlation value with a first threshold value, and determines that the plural terminals that receive the speeches whose correlation value is calculated are close to each other, when the correlation value is larger than the first threshold value. A dialog detecting unit determines whether a relationship between the utterance durations received from the plural terminals that are determined to be close to each other within an arbitrarily target period during which a dialog is to be detected fits a rule. When the relationship is determined to fit the rule, the dialog detecting unit detects dialog information containing the target period and the user ID.

A method and system is provided for estimating proximity and accurately calculating the straight line distance between the communicating Bluetooth enabled portable communication devices. Particularly, the invention provides a method and system for capturing the received signal strength indicator (RSSI) values form at least one target communication device (204) by the reference communication device (202); calculating the constant values of properties of communication environment of the devices by utilizing captured received signal strength indicator (RSSI) values; and deriving accurate straight line distance between the reference communication device (202) and the target communication device (204) by utilizing calculated constant values of properties of communication environment of the devices.

To compensate for color-calibration sensor drift, a measurement of bare-print-medium tonal value is taken in immediate time juxtaposition to each color test pattern; measured bare-medium tone is then used to correct color-patch readings. A line sensor or the like, on the scanning printhead carriage, is used for the reading. Preferably two such readings are taken, one at each end of each test pattern; ideally separate scans of the bare medium are taken without any test-pattern patch to develop longterm and short-term drift profiles, for refining the corrections. To compensate for calibration error due to runout in the carriage track—particularly for wide-bed printers—sensor response to bare medium is used to represent variations in carriage-to-medium spacing along the track; these variations are corrected in later sensor use.