Patents by Inventor Ajith Kumar

Ajith Kumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090105989
    Abstract: Techniques for non-intrusive performance of diagnostic actions including actions that result in gathering of diagnostic data in response to a condition detected in a monitored system. In one embodiment, the diagnostic actions are performed asynchronously by processes or threads that are different from the failing process or thread that receives or detects the condition that triggers the diagnostic actions such that the failing process or thread can continue processing without being affected by the executions of the diagnostic actions. Multiple asynchronous processes or threads that are different from the failing process or thread may be spawned to perform multiple diagnostic actions in parallel. The asynchronous processes or threads may be monitored to ensure that they do not adversely impact the monitored system.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 23, 2009
    Applicant: Oracle International Corporation
    Inventors: Mark Ramacher, Gary Ngai, Benoit Dageville, Karl Dias, Yair Sarig, Marcus Fallen, Ajith Kumar Mysorenagarajarao
  • Publication number: 20090106589
    Abstract: An infrastructure is provided for gathering diagnostic data that is relevant to an error or other conditions detected in a monitored system. A diagnosability framework is provided that automates the gathering of relevant diagnostic data upon occurrence of the condition in the monitored system. In one embodiment, context data is determined for the condition detected in the monitored system. A rule-based engine is provided that is configured to automatically determine one or more actions to be performed for the condition detected in the monitored system based on the determined context data. The actions may include performing tasks that gather diagnostic data that is relevant to the detected condition, store the gathered diagnostic data in a repository, recommend one or more diagnostic actions to a user, and other diagnostic related actions.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 23, 2009
    Applicant: Oracle International Corporation
    Inventors: Mark Ramacher, Gary Ngai, Benoit Dageville, Karl Dias, Yair Sarig, Marcus Fallen, Ajith Kumar Mysorenagarajarao
  • Patent number: 7492944
    Abstract: Methods and apparatus for effectively identifying the occlusion of objects, such as persons, having a high degree of freedom. In an example embodiment, after initialization, an image is input, and an image region is extracted from image data. The distance is employed that is obtained when the shape of a two-dimensional histogram in the color space is transformed into the feature space. A graph is formed by using the regions between the frames. A confidence factor is provided and image features are provided as weights to the edges that connect the nodes. Processing is performed and the confidence factor is examined. A connection judged less possible to be a path is removed. When there is only one available connection for the occlusion point, this connection is selected.
    Type: Grant
    Filed: July 17, 2006
    Date of Patent: February 17, 2009
    Assignee: International Business Machines Corporation
    Inventors: Ajith Kumar Narayanan, Alberto Tomita, Jr., Takaaki Murao, Tomio Echigo
  • Patent number: 7477738
    Abstract: A device and method of encrypting a sequence. The method (300) encrypts data (Di) over a sequence of encryption periods (Ti) by generating (315) a sequence of forward encryption keys (GKfi) each associated with a respective encryption period (Ti). Each forward encryption key is generated recursively by applying a forward one way function (FFi?1) to the forward encryption key (GKFi?1) associated with the preceding encryption period (Ti?1). Next the method (300) generates (320) a sequence of reverse encryption keys (GKRi), each associated with a respective encryption period (Ti), each reverse encryption key being generated recursively by applying a reverse one way function (FRi?1) to the reverse encryption key (GKRi+1) associated with the subsequent encryption period (Ti+1). Encrypting (325) the data (Di) for each encryption period (Ti) with a respective forward encryption key (GKFi) and a respective reverse encryption key (GKFi) is then performed.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: January 13, 2009
    Assignee: General Instrument Corporation
    Inventor: Ajith Kumar Parameswaran Rajamma
  • Publication number: 20080220726
    Abstract: A method and base station for optimizing a data rate control value for a wireless communication device in a communication network system is provided. The method comprises receiving (304) a data rate control value from a wireless communication device. Further, the method comprises determining (306) a data transfer rate, based on the data rate control value. Moreover, the method comprises optimizing (308) the data rate control value by using a set of parameters, which is based on feedback from the wireless communication device.
    Type: Application
    Filed: January 25, 2008
    Publication date: September 11, 2008
    Applicant: MOTOROLA, INC.
    Inventors: Shalini Gulati, Ajith Kumar P.R.
  • Publication number: 20080202377
    Abstract: A railroad locomotive includes a naturally-aspirated reciprocating internal combustion engine, and a traction generator driven by the engine. A throttle position sensor produces a signal corresponding to the throttle position selected by the locomotive's operator. A load regulator receives a speed signal derived from the throttle position signal and outputs an excitation signal for the traction generator which is modified by a controller in response to air availability so that engine speed and load are controlled independently of the selected throttle position, so as to limit the exhaust smoke output of the engine.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mikhail Meltser, Bryan Thomas Jett, Neil Xavier Blythe, Ajith Kumar
  • Publication number: 20080202376
    Abstract: A railroad locomotive includes a naturally aspirated reciprocating internal combustion engine driving a traction generator. A speed control system and load regulator provide an output signal which is operated upon and modified by a controller in response to the barometric pressure at which the locomotive is being operated.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mikhail Meltser, Bryan Thomas Jett, Neil Xavier Blythe, Ronald Bauerle, Ajith Kumar
  • Publication number: 20080053087
    Abstract: A method and system for detecting impairment of a turbocharger installed as part of an internal combustion engine includes turbo speed monitoring for determining a rotational speed of a turbocharger and airflow sensing for determining airflow rate through the engine. A controller compares the sensed rotational speed of the turbo with a turbo speed threshold and compares the sensed airflow rate with an airflow threshold. A turbocharger impairment flag is set in the event that both the sensed speed of the turbo is less than the turbo speed threshold and the sensed airflow is less than the airflow threshold.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 6, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kendall Roger Swenson, Kirk Arnaldo Heywood, James Robert Mischler, Ajith Kumar
  • Publication number: 20080054647
    Abstract: A method and system for rapidly shutting down an engine uses a rotating machine coupled to the engine as a dynamometer for stopping the engine. The rotating machine is controlled adaptively to maximize the power absorbed from the engine, thereby minimizing the amount of time needed to stop the engine.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 6, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Ajith Kumar
  • Patent number: 7315778
    Abstract: A method and system for detecting and responding to fugitive fueling of a reciprocating internal combustion engine use a controller to determine the actual power output of an engine, as well as a predicted power output based on fuel provided by the engine's fuel system. An engine controller may determine a presence of fugitive fueling by comparing the predicted output with the actual output, and prompt an emergency shutdown sequence if the actual engine output exceeds the predicted power output.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: January 1, 2008
    Assignee: General Electric Company
    Inventor: Ajith Kumar
  • Patent number: 7302895
    Abstract: A locomotive (10) is operable in two or more distinct configurations, with the change in configuration being response to a configuration input signal (35). A locomotive configuration is represented by the set of end use device control signals (13) that are generated by the locomotive control systems (22) in response to the respective set of operational input values (27). For a given set of operational input values, a first set of end use device control signals is generated when a configuration input has a first value, and a second set of end use device control signals is generated when a configuration input has a second value. The configuration input variable may be responsive to the locomotive location, a wayside device signal, an operator action or the health of the locomotive, for example. Locomotive configuration changes may include peak horsepower rating, number of engine cylinders fueled, number of throttle notch settings, adhesion limits, mission priorities or emission profile, for example.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: December 4, 2007
    Assignee: General Electric Company
    Inventors: Ajith Kumar, Glenn Shaffer, Wolfgang Daum, Leonard Hill, James Glen Corry, Daniel Wolf, Steven Andrew Kellner
  • Publication number: 20070256482
    Abstract: Disclosed herein are methods of generating a virtual crankshaft positioning stream of signal pulses that is derived from one or more series of actual crank signals. The virtual stream is useful for monitoring crankshaft positioning and is able to persist despite electromagnetic disturbances in the series of actual crank signals.
    Type: Application
    Filed: April 5, 2006
    Publication date: November 8, 2007
    Inventors: Ahmed Sheikh, Bo Almstedt, Larry Anderson, Kirk Heywood, Ajith Kumar
  • Publication number: 20070229091
    Abstract: Method, apparatus and computer-readable code for detecting an incipient ground fault. The apparatus includes a sensor for sensing a ground leakage signal. The apparatus further includes a correlator that receives the ground leakage signal, and at least one signal indicative of a respective energization state of a respective electrical phase for each of a plurality of electrical devices. The signal indicative of the respective energization state is modified during a time interval when a predetermined rate of change of voltage is expected. This rate of change is sufficient to cause an effect in the ground leakage signal. The correlator is configured to correlate the ground leakage signal with each received phase energization state signal, and supply a correlation signal. A processor is coupled for processing each of the individual correlation signals and extracting a correlation value from the supplied correlation signals that may be indicative of an incipient ground fault.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 4, 2007
    Inventor: Ajith Kumar
  • Publication number: 20070229090
    Abstract: Method, apparatus and computer-readable code are provided for detecting a location of an incipient ground fault in an electrical propulsion system. The apparatus may include a sensor configured to sense a respective ground leakage signal associated with a ground of the propulsion system. The apparatus may further include a second sensor configured to sense a voltage difference across a positive rail and a negative rail of the direct current bus. A correlator is coupled to the first sensor to receive the ground leakage signal, and further coupled to receive at least one signal indicative of a respective energization state of a respective electrical phase for each respective one of the plurality of electrical devices. The correlator is configured to individually correlate the ground leakage signal with each received phase energization state signal, and supply an individual correlation signal between the received ground leakage signal and each received phase energization state signal.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 4, 2007
    Inventor: AJITH KUMAR
  • Publication number: 20070229089
    Abstract: Method, apparatus and computer-readable code are provided for detecting a location of an incipient ground fault in an electrical propulsion system. The apparatus may include a sensor configured to sense a respective ground leakage signal associated with a ground of the propulsion system. The apparatus may further include a compensator coupled to the sensor to combine the ground leakage signal and a compensation signal to generate a compensated ground leakage signal. A correlator is coupled to the compensator to receive the compensated ground leakage signal, and is further coupled to receive at least one signal indicative of a respective energization state of a respective electrical phase for each respective one of the plurality of electrical devices.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 4, 2007
    Inventor: AJITH KUMAR
  • Publication number: 20070225878
    Abstract: A control system for operating a diesel powered system having at least one diesel-fueled power generating unit, the system including a mission optimizer that determines at least one setting be used by the diesel-fueled power generating unit, a converter that receives at least one of information that is to be used by the diesel-fueled power generating unit and converts the information to an acceptable signal a sensor to collect at least one operational data from the diesel powered system that is communicated to the mission optimizer, and a communication system that provides for a closed control loop between the mission optimizer, converter, and sensor.
    Type: Application
    Filed: May 18, 2007
    Publication date: September 27, 2007
    Inventors: Ajith Kumar, Wolfgang Daum
  • Publication number: 20070219682
    Abstract: A system for providing at least one of train information and track characterization information for use in train performance, including a first element to determine a location of a train on a track segment and/or a time from a beginning of the trip. A track characterization element to provide track segment information, and a sensor for measuring an operating condition of at least one of the locomotives in the train are also included. A database is provided for storing track segment information and/or the operating condition of at least one of the locomotives. A processor is also included to correlate information from the first element, the track characterization element, the sensor, and/or the database, so that the database may be used for creating a trip plan that optimizes train performance in accordance with one or more operational criteria for the train.
    Type: Application
    Filed: January 11, 2007
    Publication date: September 20, 2007
    Inventors: Ajith Kumar, Glenn Robert Shaffer
  • Publication number: 20070219683
    Abstract: A method for determining the configuration of a diesel powered system having at least one diesel-fueled power generating unit, the method including a step for determining a minimum power required from the diesel powered system in order to accomplish a specified mission, and a step for determining an operating condition of the diesel-fueled power generating unit such that the minimum power requirement is satisfied while yielding at least one of lower fuel consumption and lower emissions for the diesel powered system.
    Type: Application
    Filed: January 31, 2007
    Publication date: September 20, 2007
    Inventors: Wolfgang Daum, Glenn Robert Shaffer, Steven James Gray, David Ducharme, Ed Hall, Eric Dillen, Roy Primus, Ajith Kumar
  • Publication number: 20070219680
    Abstract: A system for operating a train having one or more locomotive consists with each locomotive consist comprising one or more locomotives, the system including a locator element to determine a location of the train, a track characterization element to provide information about a track, a sensor for measuring an operating condition of the locomotive consist, a processor operable to receive information from the locator element, the track characterizing element, and the sensor, and an algorithm embodied within the processor having access to the information to create a trip plan that optimizes performance of the locomotive consist in accordance with one or more operational criteria for the train.
    Type: Application
    Filed: March 20, 2006
    Publication date: September 20, 2007
    Inventors: Ajith Kumar, Glenn Shaffer, Paul Houpt, Bernardo Movsichoff, David Chan, Sukru Eker
  • Publication number: 20070216771
    Abstract: An imaging system for generating landmark correlated images taken from a rail vehicle including a camera mounted proximate an end of a rail vehicle for imaging an environment in a vicinity proximate the end of the rail vehicle, the camera transmitting imaging data indicative of images acquired, and a communication system for transmitting the image data from the camera to at least one of a user on-board the rail vehicle, a storage device, and to a user located remote the rail vehicle. The image data provides information indicative of at least one of a track condition behind the rail vehicle and a direction in which the rail vehicle is moving.
    Type: Application
    Filed: May 18, 2007
    Publication date: September 20, 2007
    Inventor: Ajith Kumar