Patent application number | Description | Published |
20100309912 | FORWARDING FRAMES IN A COMPUTER NETWORK USING SHORTEST PATH BRIDGING - Methods, apparatus, and products are disclosed for forwarding frames in a computer network using shortest path bridging (‘SPB’). The network includes multiple bridges, and each edge bridge is assigned a unique service virtual local area network (‘VLAN’) identifier. One of the bridges receives a frame for transmission to a destination node. The received frame includes a service VLAN identifier for the ingress bridge through which the frame entered the network and a customer VLAN identifier. The one bridge identifies an SPB forwarding tree in dependence upon the service VLAN identifier. The SPB forwarding tree specifies a shortest route in the network from the ingress bridge through the one bridge to the other bridges in the network. The one bridge then forwards the received frame to the egress bridge without MAC-in-MAC encapsulation in dependence upon the SPB forwarding tree and the customer VLAN identifier. | 12-09-2010 |
20130003727 | HYBRID PORT RANGE ENCODING - In general, techniques are described for encoding port ranges. In one example, a method includes generating an encoded value that represents a specified port range including a first element storing an identifier that identifies a frequently occurring port range stored in an associative data structure of most frequently occurring port ranges, a second element storing an index that represents a dynamically-learned port range specifying at least a part of the specified port range, the dynamically-learned port range represented in a tree-structure of dynamically-learned port ranges and identified by the index, and applying, by a forwarding plane of the computing device, one or more filters associated with the encoded value to a packet that specifies a port included in the specified port range. | 01-03-2013 |
20130007257 | FILTER SELECTION AND RESUSE - In general, techniques are described for selectively applying and reusing filters stored in a router. In one example, a method includes receiving a network access request from a first user. The method also includes selecting a candidate rule group associated with the packet flow, wherein the candidate rule group comprises one or more currently deployed rules of an existing rule group on the computing device that are currently installed within a forwarding plane and are being applied by the forwarding plane to network traffic associated with a second user. The method also includes installing a new rule group comprising the one or more currently deployed rules of the existing rule group and one or more new rules associated with the first user and not currently installed within a forwarding plane. The method also includes applying each rule of the new rule group to network traffic associated with the first user. | 01-03-2013 |
20140092738 | MAINTAINING LOAD BALANCING AFTER SERVICE APPLICATION WITH A NETWOK DEVICE - In general, techniques are described for maintaining load balancing after service application. A network device comprising ingress and egress forwarding components and a service card may implement the techniques. An ingress forwarding component receives a packet and, in response to a determination that the service is to be applied to the packet, updates the packet to include an ingress identifier that identifies the ingress forwarding component, thereafter transmitting the updated packet to the service card. The service card applies the service to the updated packet to generate a serviced packet and transmits the serviced packet to the ingress forwarding component identified by the ingress identifier so as to maintain load balancing of packet flows across the plurality of forwarding components. The ingress forwarding component determines a next hop to which to forward the serviced packet and the egress forwarding component forwards the serviced packet to the determined next hop. | 04-03-2014 |
20140092899 | NETWORK ADDRESS TRANSLATION FOR APPLICATION OF SUBSCRIBER-AWARE SERVICES - In general, techniques are described for informing services nodes of private network address information in order to apply subscriber-aware services with the services node. In some examples, a services node includes an Authentication, Authorization, and Accounting (AAA) interface to receive a AAA message, wherein the AAA message has been extended from a AAA protocol to specify a private network address of a subscriber device authenticated to an access network by the AAA server and assigned the private network address that is not routable external to the access network. A mapping module associates the public network address of subscriber data traffic with the private network address received by the AAA message. One or more service modules select one or more of a plurality of subscriber policies using the associated private network address and apply services to the subscriber data traffic in accordance with the selected subscriber policies. | 04-03-2014 |
Patent application number | Description | Published |
20100197238 | Fielded Device Failure Tracking and Response - A fault remediation system for fielded wireless mobile devices addresses field failure data collection, consolidation of field failure data, and an information services platform so that the players in a wireless/mobile broadcast/broadband application/service value chain to respond to field failure problems in a consistent and automated manner from wireless/mobile devices over wireless multicast and or wireless broadband networks. An elegant and extremely flexible mechanism enables the failure data collection from a targeted set of wireless/mobile devices. In addition, sophisticated mechanisms identify targeted set of devices that should participate in field failure data collection based on user specified operational requirements (e.g., selected OEM, device configuration type, subscribers to a specific wireless broadband serve, failure occurrence certain time limits, etc.). The fault data logging on the mobile device is vertically integrated to allow diagnosis and assignment to a responsible party for fixing, testing, and release with subsequent certification and deployment. | 08-05-2010 |
20150163701 | MANAGING VOICE CALLS IN CSFB DEVICES - The disclosure provides for managing voice calls in Circuit Switched Fall Back (CSFB) communication devices that are configured to make voice calls using both Circuit Switched (CS) networks and Internet Protocol (IP) over Packet Switched (PS) networks. The device may determine, when registered with a PS network, a signal strength of a CS network at the device. The device may select, based on the signal strength of the CS network, one of the CS network and the PS network for the voice call. The device may establish the voice call using the selected network. The device may receive a user request for initiating a voice call, and initiate a voice call over the selected network automatically using an application corresponding to the selected network. The device may also register with a voice over IP (VoIP) service over the PS network based on the signal strength of the CS network. | 06-11-2015 |
Patent application number | Description | Published |
20090103794 | DISPLAY OF CLASSIFIER OUTPUT AND CONFIDENCE MEASURE IN AN IMAGE - Systems and methods are described for displaying classifier output and confidence measure in an image. The confidence measure advantageously provides additional information to the user indicating the accuracy of the classification result. Based on the classification accuracy, the user may accept or reject the classification result. In an exemplary embodiment, the classifier output is displayed on the image by color coding regions in the image based on their classifications. The confidence measure is displayed by adjusting the transparencies of the color coded regions according to their confidence measures. In one embodiment, only the classifications having confidence measures above a threshold are displayed. In other embodiments, the classifier output and confidence measure may be displayed separately, contour lines may be drawn through image regions having similar confidence measures, and the confidence measure may be displayed for a region under a pointer that the user can move within the image. | 04-23-2009 |
20090270731 | METHODS, SYSTEMS, AND DEVICES FOR TISSUE CHARACTERIZATION BY SPECTRAL SIMILARITY OF INTRAVASCULAR ULTRASOUND SIGNALS - A method of characterizing a tissue type of a tissue region includes providing a tissue classifier comprising multiple detector arrays for each of multiple tissue types. Each detector array comprises multiple detectors and each detector comprises multiple tissue type-assigned intravascular ultrasound (IVUS) spectra. A plurality of the tissue type-assigned IVUS spectra of each detector correspond to a tissue type of the detector and a plurality of the tissue type-assigned IVUS spectra correspond to other tissue types. For each of the detector arrays, an input IVUS spectrum of the tissue region is compared to the tissue type-assigned IVUS spectra of each of the detectors in the detector array. For each of the detectors, it is determined whether the input spectrum corresponds to the tissue type of the detector based on the comparisons of the input spectrum to the tissue type-assigned spectra for that detector. For each of the detector arrays, results of the detectors of the detector array are combined to produce an array result. The array results for the detector arrays are combined to provide a tissue characterization of the tissue region from the multiple tissue types. | 10-29-2009 |
20100022880 | METHODS, SYSTEMS, AND DEVICES FOR TISSUE CHARACTERIZATION AND QUANTIFICATION USING INTRAVASCULAR ULTRASOUND SIGNALS - A method of evaluating at least one tissue type includes providing a tissue classifier comprising multiple detector arrays for each of multiple tissue types. Each detector array comprises multiple detectors and each detector comprises multiple tissue type-assigned intravascular ultrasound (IVUS) spectra. A plurality of the tissue type-assigned IVUS spectra of each detector correspond to a tissue type of the detector and a plurality of the tissue type-assigned IVUS spectra correspond to other tissue types. For each of the detector arrays, an input IVUS spectrum of the tissue region is compared to the tissue type-assigned IVUS spectra of each of the detectors in the detector array. For each of the detectors, it is determined whether the input spectrum corresponds to the tissue type of the detector based on the comparisons of the input spectrum to the tissue type-assigned spectra for that detector. For each of the detector arrays, results of the detectors of the detector array are combined to produce an array result. The array results for the detector arrays are combined to provide a tissue characterization of the tissue region from the multiple tissue types. This is repeated for each region to be characterized. A size of at least one of the tissue types is determined using the tissue characterizations. One or more IVUS images can be displayed with the tissue characterization and an indication of the size of at least one of the tissue types in a selected portion of the image that is displayed. | 01-28-2010 |
20100113949 | SYSTEMS AND METHODS FOR MEASURING PULSE WAVE VELOCITY WITH AN INTRAVASCULAR DEVICE - The systems and methods described herein allow measurement of the velocity of a pulse wave propagating within a body lumen using an intravascular elongate medical device. The elongate medical device can include a data collection device configured to collect pulse wave data at a location within the lumen. The data collection device is communicatively coupled with a velocity measurement system and configured to output the collected data to the velocity measurement system. The velocity measurement system is configured to calculate the velocity of the pulse wave based on the collection data. The velocity of a pulse wave over a region of the lumen can be used for tissue characterization, diagnosis and the like. | 05-06-2010 |
20100158340 | SYSTEMS AND METHODS FOR IMAGE SEGMENTATION WITH A MULTI-STAGE CLASSIFIER - The systems and methods described herein provide for fast and accurate image segmentation through the application of a multi-stage classifier to an image data set. An image processing system is provided having a processor configured to apply a multi-stage classifier to the image data set to identify a distinctive region. The, multi-stage classifier can include two or more component classifiers. The first component classifier can have a sensitivity level configured to identify one or more target regions in the image data set and the second component classifier can have a specificity level configured to confirm the presence of the distinctive region in any identified target regions. Also provided is a classification array having multiple multi-stage classifiers for identification and confirmation of more than one distinctive region or for the application of different classification configurations to the image data set to identify a specific distinctive region. | 06-24-2010 |
20110160586 | SYSTEMS AND METHODS FOR MULTI-FREQUENCY IMAGING OF PATIENT TISSUE USING INTRAVASCULAR ULTRASOUND IMAGING SYSTEMS - A method for imaging patient tissue using an intravascular ultrasound image includes inserting a catheter into a patient blood vessel. The catheter includes at least one transducer configured and arranged for insertion into a lumen of the catheter. Acoustic signals are transmitted from the at least one transducer along a series of scan lines towards patient tissue between incremental rotations of the at least one transducer. The transmitted acoustic signals include first acoustic signals having first frequency bandwidths centered at a first center frequency and second acoustic signals having second frequency bandwidths centered at a second center frequency. Corresponding echo signals reflected from patient tissue are received, transformed, processed, and displayed. | 06-30-2011 |
20140249423 | SYSTEMS AND METHODS FOR LUMEN BORDER DETECTION IN INTRAVASCULAR ULTRASOUND SEQUENCES - A method for processing a sequence of ultrasound frames for display includes receiving a sequence of intravascular ultrasound (IVUS) frames of a vessel having a lumen, the sequence including a first frame and a second frame; determining one or more texture features for each of one or more regions of the first frame; determining at least one flow feature for each of the one or more regions by comparing the first and second frames; deriving a lumen border for the first frame using the one or more texture features and the at least one flow feature to characterize the one or more regions as within or outside of the lumen of the vessel; and displaying an ultrasound image of the first frame with the lumen border. | 09-04-2014 |
Patent application number | Description | Published |
20080281191 | METHOD OF CATHETER TRACKING USING IMAGE INFORMATION - An improved method of tracking a catheter's position within a human body does not rely on x-rays, but instead calculates the position of the catheter's imaging head by analyzing image data. Such an analysis is able to determine the position of the imaging head in 3 dimensional space, relative to an arbitrarily selected reference image. An image is compared with the reference image, correlation data between corresponding points on the two images are gathered, and a correlation loss rate in a particular direction is determined. This correlation loss rate is modeled to an exponential function, which is evaluated to estimate an angle of separation between the image and the reference image. One or more angles of separation are used to determine a position in three dimensional space of the image, relative to the reference image. By repeating this process for a series of images being gathered by a catheter, the position of the catheter can be determined. Additionally, a 3 dimensional map of lumens in the human body can be created. | 11-13-2008 |
20110211745 | SYSTEMS AND METHODS FOR IMAGE SEGMENTATION WITH A MULTI-STAGE CLASSIFIER - The systems and methods described herein provide for fast and accurate image segmentation through the application of a multi-stage classifier to an image data set. An image processing system is provided having a processor configured to apply a multi-stage classifier to the image data set to identify a distinctive region. The multi-stage classifier can include two or more component classifiers. The first component classifier can have a sensitivity level configured to identify one or more target regions in the image data set and the second component classifier can have a specificity level configured to confirm the presence of the distinctive region in any identified target regions. Also provided is a classification array having multiple multi-stage classifiers for identification and confirmation of more than one distinctive region or for the application of different classification configurations to the image data set to identify a specific distinctive region. | 09-01-2011 |
20120004556 | SYSTEMS AND METHODS FOR ESTIMATING THE SIZE AND POSITION OF A MEDICAL DEVICE TO BE APPLIED WITHIN A PATIENT - The field of the invention relates to medical imaging systems, and more particularly to systems and methods for estimating the size and position of a stent or other medical device within a patient. In one embodiment, a medical imaging system includes an elongated tubular member having distal and proximal ends, configured to be inserted into a vessel of a patient, an imaging device coupled to the distal end of the elongated tubular member, and a console electrically coupled to the imaging device, wherein the console includes a computer-usable medium, electrically coupled to the imaging device, having a sequence of instructions which, when executed by a processor, causes said processor to execute a process including generating an image of the vessel, and overlay one or more shapes onto the image age to provide a visual approximation of the size and position of a medical device to be applied within the patient. | 01-05-2012 |