Doraiswami
Rajamani Doraiswami, Ottawa CA
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20150338449 | DISTRIBUTED FILTERING METHOD FOR FAULT DIAGNOSIS IN A SENSOR NETWORK - Discussed herein are a sensor-network system and a method thereof for detecting and isolating faults occurring in sub-systems and sensors included in the network. The sub-systems and the sensor measurements are subject to noise and disturbances. A bank of Kalman-filters (KF) is used to detect and isolate the faults. Each KF is driven by either a pair of consecutive sensor measurements or a pair including a reference input and a sensor measurement. The KF residual is computed for each measurement pair and is a reliable indicator of a fault in subsystems and sensors located in the network. | 11-26-2015 |
Ravi Doraiswami, Suwanee, GA US
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20120017978 | Energy harvesting using RF MEMS - Described herein is an energy harvesting device and a method for its fabrication for the harvesting of solar energy. Solar energy is absorbed using a photosensitive material which is coated upon a flexible membrane, which is suspended over a metal signal line of an RF MEMS structure. By controlling the discharge sequence the stored electrical charge can be transferred as high voltage pulses to an external load or rechargeable batteries. The output voltage can be adjusted by controlling the on/off frequency of operation of the switch. | 01-26-2012 |
20120018514 | MEMS barcode device for monitoring medical systems at point of care - This invention relates to a novel wireless barcode MEMS canary which can be embedded in electronic systems that can be monitored at any time for their degradation over a period of time until they fail. By establishing the relationship between the healthy state of the barcode and its degradation to that of the electronic system and the components, the residual life of the system can be established and preventive measures can be taken before part failure. | 01-26-2012 |
20120019386 | Wireless biosensor network for point of care preparedness for critical patients - A biodegradable, bio-compatible material is described for use in wireless biosensors for point-of-care applications. The biosensor made from this biomaterial is capable of sensing environmental effects and as well as presence of bio-logical entities in the environment of concern simultaneously. Such a sensor can be used for evaluating point-of-care environmental preparedness for a specific patient through continuous monitoring of patient health performance due to environmental exposure. A two-tier network architecture is established for real-time monitoring (static case) that also provides warning of accumulated exposure. Wavelet analysis can be used to identify anomalies in the sensed data to initiate a warning. | 01-26-2012 |
Saravana Kumar Doraiswami, Tamilnadu IN
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20130165112 | METHOD AND SYSTEM FOR ACCESS POINT ASSISTED ACTIVE ROAM SCANNING - A method and system for an access point assisted active roam scanning includes first and second access points, a switch and a client device. The switch communicates with the first and second access points that operate in a communication network, each access point having a respective operating area. The client device, within the first operating area, includes a wireless transceiver broadcasting first and second probe requests to the first and second access points, respectively, the second probe request being broadcast without receiving a probe response to the first probe request. The first and second access points generate first and second probe responses in response to receiving the first and second probe requests. The switch receives the first and second probe responses and generates a consolidated probe response as a function of the first and second probe responses. | 06-27-2013 |
Vijayaraghavan Doraiswami, Santa Clara, CA US
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20100235593 | FLOW RESILIENCY - In an example embodiment, packets for a selected flow are replicated and sent over one or more diverse paths, such as a primary path and at least one secondary path, to a destination switching device. At the destination switching device, one copy of the replicated packets is selected for delivery to the destination, and the remaining copies are discarded. In the event that packets are not received at the destination switching device due to loss of connection on the primary path or packets are not timely delivered due to congestion on the primary path, a different path may be selected as the primary path. | 09-16-2010 |
20140156954 | SYSTEM AND METHOD FOR ACHIEVING ENHANCED PERFORMANCE WITH MULTIPLE NETWORKING CENTRAL PROCESSING UNIT (CPU) CORES - The present disclosure discloses a method and network device for achieving enhanced performance with multiple CPU cores in a network device having a symmetric multiprocessing architecture. The disclosed method allows for storing, by each central processing unit (CPU) core, a non-atomic data structure, which is specific to each networking CPU core, in a memory shared by the plurality of CPU cores. Also, the memory is not associated with any locking mechanism. In response to a data packet is received by a particular CPU core, the disclosed system will update a value of the non-atomic data structure corresponding to the particular CPU core. The data structure may be a counter or a fragment table. Further, a dedicated CPU core is allocated to process only data packets received from other CPU cores, and is responsible for dynamically responding to queries receives from a control plane process. | 06-05-2014 |
Vijayaraghavan Doraiswami, Mountain View, CA US
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20080276004 | Populating Location Wiremap Databases - A method for populating location wiremap databases. In particular implementations, a method includes establishing a link layer connection with a client on a switch port, where the switch port is associated with a port identifier and is mapped to a location; identifying one or more connection attributes of the connection, where the connection attributes comprise a network layer address of the client; and transmitting the port identifier and the network layer address of the client to a location server. | 11-06-2008 |