320 results about "Filter technique" patented technology

A system and method operates on a client device and acquires a suspect list of user products based on information derived from the client device. The system normalizes the list, and the user confirms the accuracy of the product list. The user product list is sent to a server where the user product list is compared to other lists using collaborative filtering techniques. The collaborative filtering techniques determine products of interest for the use and the level of interest of the user. The system computes a similarity measure based upon the number of similar products that match the user's product list and rankings provided by the user and others. Demographic and behavioral data may also be used in performing the comparison and the similarity measure. The system acquires editorial rankings of products from other users and provides a ranked list of recommended products based upon the editorial rankings.

Mechanisms and techniques operating in a content distribution network in a peering relationship with a second content distribution network. The system maintains a first client list identifying a first set of client devices associated with a first content distribution network. The system also obtains a second client list identifying a second set of client devices associated with a second content distribution network. The system applies a client list filtering technique to the first client list and the second client list to produce a preferred client list associated with the second content distribution network. The preferred client list potentially identifies at least one preferred client device for which the second content distribution network preferably processes client requests. The system then operates a content routing technique to direct a client request associated with a client device to a content distribution network having a preferred client list that identifies the client device associated with the client request as a preferred client device.

The communication system includes a hybride fiber / coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber / coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber / coax distribution network. The head end includes head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information. The system further includes service units, each service unit operatively connected to the hybrid fiber / coax distribution network for upstream transmission of telephony and control data in the second frequency bandwidth and for receipt of the downstream control data and telephony in the first frequency bandwidth. Each service unit includes a service unit multicarrier modem for modulating at least the upstream telephony information on at least one carrier orthogonal at the head end terminal to another carrier in the second frequency bandwidth and for demodulating at least downstream telephony information modulated on at least a band of a plurality of orthogonal carriers in the first frequency bandwidth. Each service unit also includes a controller operatively connected to the service unit multicarrier modem for controlling the modulation of and demodulation performed by the service unit multicarrier modem. A method of monitoring communication channels, a distributed loop method for adjusting transmission characteristics to allow for transmission of data in a multi-point to point communication system, a polyphase filter technique for providing ingress protection and a scanning method for identifying frequency bands to be used for transmission by service units are also included. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT). In one embodiment, a scalable FFT system is built using a novel dual-radix butterfly core.

A method and system for providing flexible access resources or services related to particular software applications are described. The system includes a database of Internet sites that have been categorized so that the system determines the category of information that a user is accessing on the Internet. The system is also programmed so users are only allowed to access sites a limited number of times. The system is further programmed to limit a user's access to the Internet based on the network's current bandwidth usage. Moreover, users can requested a postponed access, wherein the resource or service they are requesting is stored to a server, and available to the user at a later time. In addition, if a user chooses to access a resource or service that is within certain predefined categories, they are presented with the option of retrieving the resource or service, but notified that their access will be logged to a file.

Filtering of optical fibers and other related devices. High-energy methods for depositing thin films directly onto the ends of optical fibers can be used to produce high-quality, high-performance filters in quantity at a reasonable cost. These high-quality filters provide the high performance needed for many demanding applications and often eliminate the need for filters applied to wafers or expanded-beam filtering techniques. Having high-quality filters applied directly to optical fiber and faces permits production of high-performance, micro-sized devices that incorporate optical filters. Devices in which these filters may be used include spectroscopic applications including those using fiber optic probes, wavelength division multiplexing, telecommunications, general fiber optic sensor usage, photonic computing, photonic amplifiers, pump blocking and a variety of laser devices.

A method and system for providing virus detection. A virus detection system provides for the use of pattern matching techniques on data at a binary level for virus detection. Whenever an incoming data stream is received, the data stream is segmented into time-based data frames. The time-based data frames are processed to generate associated data frame images utilizing signal processing identification and filter techniques. One or more data frame images are compared to a stored virus image utilizing pattern analysis techniques. A pattern match value associated with each data frame image is generated based on the comparison and a determination is made as to whether or not the pattern match value exceeds a pattern match value threshold. When the pattern match value exceeds the pattern match value threshold, a pattern associated with the virus image is removed from the time-based frames to produce a filtered data stream.

A method is provided for detecting road-side edges in a road segment using a light-based sensing system. Input range data is captured using the light-based sensing system. An elevation-based road segment is generated based on the captured input range data. The elevation-based road segment is processed by filtering techniques to identify the road segment candidate region and by pattern recognition techniques to determine whether the candidate region is a road segment. The input range data is also projected onto the ground plane for further validation. The line representation of the projected points are identified. The line representation of the candidate regions is compared to a simple road / road-edge model in the top-down view to determine whether the candidate region is a road segment with its edges. The proposed method provides fast processing speeds and reliable detection performance for both road and road-side edges simultaneously in the captured range data.

Agile frequency converter and method, IF-RF level exchange process, and notch filtering techniques. System noise and spurious levels generated by channel frequency conversion is reduced in applications requiring broadband combining of frequency converters to form multichannel composite signal. Converter employs two-stage frequency conversion process, with gain exchange system using variable pre-mixer gain and variable post-mixer attenuation to maintain constant RF output signal power level. For those few conversion frequencies where distortion component(s) cannot be filtered without degrading desired signal, IF-RF level exchange is optimized for meeting the carrier-to-distortion (C / D) ratio specifications at slight expense of noise level for that channel only, while still meeting aggregate combined carrier-to-noise (C / N) specification requirements. Optimal apportionment of level exchange for each channel depends on specific frequency rejection capability of spurious components and is matched to filtering capability and stored within non-volatile memory of a microcontroller used in the frequency converter.

A method and system for providing flexible access resources or services related to particular software applications are described. The system includes a database of Internet sites that have been categorized so that the system determines the category of information that a user is accessing on the Internet. The system is also programmed so users are only allowed to access sites a limited number of times. The system is further programmed to limit a user's access to the Internet based on the network's current bandwidth usage. Moreover, users can requested a postponed access, wherein the resource or service they are requesting is stored to a server, and available to the user at a later time. In addition, if a user chooses to access a resource or service that is within certain predefined categories, they are presented with the option of retrieving the resource or service, but notified that their access will be logged to a file.

The invention provides a novel license plate identification method and a system and particularly relates to an integral license plate identification system which utilizes various image processing algorisms to complete license plate image pretreatment and the final license plate character identification. The identification method comprises the following steps: in license plate positioning, the filtering technique based on the math morphology is adopted; in license plate character segmentation and extraction, the methods such as perpendicular projection are adopted; lastly, the license plate characters are indentified through the template matching technique based on multiple-characteristic extraction. Compared with the prior art, the novel license plate identification method and the system can identify the license plate quickly, robustly and accurately.

A system protects against loss of communication during network attacks. In a first implementation, a system (120) models the behavior of normal users in a network in response to an application of a first packet filtering technique. The system (120) receives a group of packets from a first user subsequent to the application of the first packet filtering technique and creates one or more models reflecting the behavior of the first user based on the received packets. In another implementation, a system (130) receives a stream of packets subsequent to a filtering technique being applied, partitions the packets into groups, where each group corresponds to more than one packet, and classifies each group of packets as a normal group or an attack group using one or more models. Each model reflects a normal response to an application of the filtering technique. The system (130) forwards groups classified as normal groups, thus preventing network attacks from choking off all communication in the network.

Techniques are described for constructing filter type features capable of entrapping particle contaminants to eliminate printing defects. These techniques utilize photo-imageable barrier material to fabricate various shapes and forms to reduce feature sizes. Several of these techniques utilize barrier material of height less than barrier materials used to fabricate ink feed channels and firing chamber walls. Another variation describes creation of a filter mesh from two layers of reduced height barrier materials.

The invention relates to a vertical full automation filter press. The existing filtration filter pressing installment as a result of the structure technology, ,the horizontal hand movement filtration frame which uses the plastic has low production efficiency and big environmental pollution; because the semiautomatic pressure filtration installment also uses the electrical controlled method, but the automated coordination performance of other organization is bad, its stability and the production efficiency are low, specially when the seal cavity bearing, the equipment presents vibration and spray phenomenon. The filter press includes the leveling board frame group, the main body support structure, the board frame group opening and holding apparatus, the filtering cloth automatic cycle running gear, the filtering cloth washing device, automatic control system, hydraulic system, craft circuitry and so on. It uses the vertical structure to realize the full automatic operation, thus has high filter efficiency, low energy consumption, high automaticity, high product quality, easy operation, the simple maintenance, and no pollution.

A method for analyzing traffic on road based on taxi cab data includes utilizing buffer region technique, correlation verification technique, trend included angle technique, active and passive car stopping discrimination technique and data drift-filter technique to carry out car speed analysis, out-driving start-stop point OD analysis and car out-driving index analysis; then making integrated analysis of parameter settings and combining with concrete data reported from taxi cabs to count up out-driving index of taxi cab.

A statistical methodology is employed for assisting people with the setting of parameters of software applications or services. With the method, information about demographics and / or about the complete or partial preferences of other people, are analyzed to infer recommendations for settings and functionality of a computer application or service. A system is reviewed with the ability to receive data regarding a plurality of users, and stores respective profiles for these users in a community store. The system can leverage off of these completed and / or partially completed profiles of parameters representing preferences about software operation in connection with building new profiles for users (new and / or existing). Data regarding a user that desires to build a new profile is employed in connection with the community profiles to facilitate the user building a personalized profile. Various statistical and / probabilistic schemes can be employed, for example, collaborative filtering techniques to identify to the user the top n settings by particular parameter(s), top m settings by popularity, top x most similar profiles to facilitate the user selecting most appropriate sub-profiles as part of a personalized profile building and selection effort.

A method is provided for detecting road-side edges in a road segment using a light-based sensing system. Input range data is captured using the light-based sensing system. An elevation-based road segment is generated based on the captured input range data. The elevation-based road segment is processed by filtering techniques to identify the road segment candidate region and by pattern recognition techniques to determine whether the candidate region is a road segment. The input range data is also projected onto the ground plane for further validation. The line representation of the projected points are identified. The line representation of the candidate regions is compared to a simple road / road-edge model in the top-down view to determine whether the candidate region is a road segment with its edges. The proposed method provides fast processing speeds and reliable detection performance for both road and road-side edges simultaneously in the captured range data.

Method and apparatus for computer-aided assessment of organizational process or system. Method and apparatus are adapted to display computer displayed questions to an assessor, who then inputs numerical inputs relative to the assessor's perception of the process or system. Filtering techniques inhibit entry of unsupported numerical inputs which may be untrue and / or exaggerated. Sequential questions used in combination provide more accurate assessment of the system or process, thereby enabling focused audits and / or inspections.

The invention belongs to the optical precise measurement technical field and relates to an ultra-long focal distance measuring method and a corresponding apparatus used for a differential confocal combined lens. The method firstly adopts the differential confocal focusing theory to respectively define the focus position of a reference lens and the focus position of the combination of measured lens and reference lens; then the distance delta between two focuses and the distance d<0> between two lenses are measured and then the formula is adopted to figure out the focal distance of the measured lens and the sensitivity for focal distance measurement can be simultaneously enhanced with the pupil filtering technique during the measuring process. The invention firstly puts forward the adoption of the features of the corresponding micro-lens focus while the differential confocal response curve passes the zero point so as to extend the differential confocal microscopy theory to the ultra-long focal distance measurement field and form the differential confocal focusing theory. The invention integrates the differential confocal focusing theory and the lens combination so as to get the advantages that the measurement precision is high and the anti-interference capability is strong. The invention can be applied to the detection for the lens with ultra-long focal distance and the high-precise focal distance measurement in the optical system assembling process.

This invention relates to protection system in the user identification and filter technique, wherein, current network user can download each kind of materials with most not suitable for children; and we can adopts biological collection technique to judge age of biology but the current device has not the control, limitation or degree on internet for children.

A radial-shaped wireless fence system is provided that contains one or more dogs in a user-defined area without the need for a physical fence or underground wire. The system includes a base unit and at least one collar, and is easy to set up and use. Through improved filtering of consecutive distance measurement values taken between the base unit and the collar, errant measurement values are discounted in terms of their contribution to the current estimate of the dog's distance from the base unit. These filtering techniques, in combination with improved signal strength and antenna diversity in the communication between the base unit and the collar, improve the accuracy and consistency with which the dog's distance from the base unit is tracked so that unwanted corrections are not administered to the dog.

At the information delivery server, access logs for accesses to information items made by users are managed, and a correlation detection condition indicating at least one information item is received from a client. Then, related users who made accesses to that at least one information item are detected according to the access logs, correlated information items that are accessed by the related users are extracted according to the access logs, and the correlated information items are delivered to the client.

Air cooling passages for a gas turbine engine component, and in particular, a blade outer air seal, are provided with a filtering technique to filter impurities before they can reach a metering location. The air filtering techniques include the provision of a plurality of openings which each have a small cross-sectional area when compared to the cross-sectional area of the metering location. These small openings will filter out impurities before they reach the metering location. The metering location has a cross-sectional area that is greater than the cross-sectional area of any one of the openings, however, the total cross-sectional area of the plurality of openings exceeds the cross-sectional area of the metering location such that adequate air is supplied even if several of the openings are clogged.

The invention discloses a constructing method of an airborne radar space-time two-dimensional filter based on clutter covariance matrix reconstruction, which belongs to the technical field of radar signal processing and mainly solves the problems that the existing filtering technique has high requirement on data training samples, large operand for filtering clutter and poor real-time application performance. The constructing method comprises the following implementation steps of: firstly, constructing clutter covariance matrix according to the movement velocity and working parameters of the radar; next, realizing random clutter covariance matrix reconstruction by changing space-time relevant functions and adjusting clutter bandwidth; then, designing a group of filters with different notch widths based on a Wiener filtering principle; and finally, conducting nonlinear selection to filter coefficients according to a minimum residual energy criterion so as to obtain the optimal airborne radar space-time two-dimensional filter. Simulation analysis and measured data indicate that the constructing method has better clutter inhibition performance and moving-target detection performance when processing heterogeneous clutter environmental data compared with the small degree of freedom dimension-reducing self-adaptive method.

The invention relates to an acceleration or deceleration control method of numerical control system based on filter technique, which comprises the following steps: planning straight acceleration or deceleration by using the inputted workpiece program data; performing moving average filtering and filter compensation on the planned speed of the straight acceleration or deceleration to obtain a new planned speed value and a position value; performing interpolation on the position value; transmitting the interpolated position value to a servo driver in order to control a servomotor; wherein the moving average filtering of the planned speed of the straight acceleration or deceleration is implemented by adding a moving average filter after planning the straight acceleration or deceleration to control sudden changes of an accelerated speed, particularly comprising the following steps: calculating the speed with a method of planning the moving average filtering speed; changing the smooth degree of the straight acceleration or deceleration by selecting filter length (i.e. controlling the magnitude and the shape of the accelerated speed); and calculating a planned position according to the speed after filtering. The invention solves the vibration problem of a numerically-controlled machine tool during movement, and has the advantages of easy implementation, good compatibility and good flexibility.

A method and apparatus for a zone detection system in which assets and personnel to be monitored are assigned a transmitter that emits a transmitter signal that includes a common code and a unique code. Processing requirements associated with restricted zone monitoring are reduced by scanning received signals for the single common code or a relatively small number of common codes. Processing requirements associated with locating an individual transmitter are reduced by scanning for a single transmitter signal. Transmitter signals are relayed by sub-sector RF-relays to a centralized sector signal processing computer. One or more signal processing computers interface with a system controller that supports a centralized user interface configurable to manage one or more sectors. CDMA matched filter techniques, power signature maps, and two-dimensional / three-dimensional convolution techniques are used to efficiently detect signals and to refine the estimated location a specific transmitter or a group of transmitters.

The invention relates to an audio signal processing method and an audio signal processing device for restoring a signal under speaker cut-off frequency to the original sound, which aim to extend the equivalent sound range of a small-sized speaker and enhance the expression of low sound. A virtual low-sound harmonic wave sequence is generated by a feedforward self-multiplication operation method and singly by the grain corresponding to each harmonic wave respectively, so that the proportion of the harmonic waves can be freely controlled and the tone can be controlled; the gain applied to the virtual low-sound signal is adjusted by a virtual low-sound signal sound-type control method and according to the impacting process and the releasing process to control the sound types of the virtual low-sound signal so as to control the hearing feeling of the final sound signal according to requirements to make the sound from 'knocking' more abundant; and the virtual low-sound signal processing effect is enhanced by combining techniques such as a low-sound dynamic range compression technique, a power conservation filter technique, a low-sound signal frequency redivision technique and the like, even if under high speaker cut-off frequency, the quality of the original low sound can still be restored by effectively restoring the virtual low-sound signal.

The invention relates to a look-ahead velocity control method based on filtering technique, which comprises steps of linking path segments of a processing curve into a path chain, prospectively calculating a constraint velocity for a maximum acceleration and a constraint velocity for the profile error at the corner of the processing curve, operating the corner velocity according to each constraint velocity, prospectively planning the integral velocity of the path chain through the linear accelerating and decelerating strategy to obtain a prospectively planned velocity of the path chain, and utilizing a differential value between the corner velocity and the path chain prospectively planned velocity as a criterion to judge whether decelerating in advance or not during the interpolation procedure, if the differential value is out of a stated threshold value, then calculating the length of the decelerating segments in the path chain, reversely recursing the decelerating path segments in the path chain to set the required feeding velocity, performing track planning to the path chain , and realizing self-adaptive adjustment of the processing velocity along with geometric configuration changes of processing paths through adjusting the required feeding velocity of the decelerating path segments. The look-ahead velocity control method has the advantages of high flexible self-adapting control capacity, high executing efficiency, good velocity smoothness and the like.

A highly automated system and method for acquiring animal consumption and behavior data comprising stations where consumables are fed to animals. The stations being equipped with RFID equipment for reading RFID tags in close proximity to the station, and weighing devices for measuring the weight of the consumables. The RFID equipment and the weighing device are connected to a computer which calculates the weight of the trough at specific times by using weight data collected before and after the specified time to enhance the accuracy of the weight measurement. The computer uses a “mathematical weighted filter technique” to estimate the weight of the trough before and after a consumption event. The computer uses a method to divide the reduction / increase in weighed matter between the RFID tag last seen and the next RFID tag appearing, providing the reduction / increase in matter is less than a specified amount.