Patents by Inventor Ravi Mehrotra

Ravi Mehrotra 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).

  • Patent number: 8731644
    Abstract: The present invention provides a device and method for filtering impulsive noise and channel switching noise at ADC in an ECG device with multiplexed ESCs. The filtering is based on an implementation of Burst Sampling technique also a method for correcting errors in derived leads caused by time delays due to sequential sampling of different ECG signals is also provided. Real time digital FIR filters are used for removing other types of noise in ECG signals. The ECG device is compact and light weight and includes features of self calibration, clip detection and drawing of power from USB port of a PC, batteries or an external power source. The ECG monitoring device of the present invention measures real time ECG signals with automated data recording, data storage and retrieval, data transmission/transfer to an external system, along with parameter extraction for ECG analysis in an efficient manner for quick and reliable ECG measurement, in an extremely cost effective manner.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: May 20, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Ravi Mehrotra, Ansari Imran Mohd, Ashish Ranjan, Deepti Chadha, Anjali Sharma
  • Publication number: 20110319777
    Abstract: The present invention provides a device and method for filtering impulsive noise and channel switching noise at ADC in an ECG device with multiplexed ESCs. The filtering is based on an implementation of Burst Sampling technique also a method for correcting errors in derived leads caused by time delays due to sequential sampling of different ECG signals is also provided. Real time digital FIR filters are used for removing other types of noise in ECG signals. The ECG device is compact and light weight and includes features of self calibration, clip detection and drawing of power from USB port of a PC, batteries or an external power source. The ECG monitoring device of the present invention measures real time ECG signals with automated data recording, data storage and retrieval, data transmission/transfer to an external system, along with parameter extraction for ECG analysis in an efficient manner for quick and reliable ECG measurement, in an extremely cost effective manner.
    Type: Application
    Filed: March 9, 2010
    Publication date: December 29, 2011
    Applicant: Council of Scientific & Industrial Research
    Inventors: Ravi Mehrotra, Ansari Imran Mohd, Ashish Ranjan, Deepti Chadha, Anjali Sharma
  • Patent number: 5717621
    Abstract: An apparatus and method for solving a system of linear equations uses a sequence of matrix-vector multiplications wherein the matrix to be multiplied is derived from an expansion point matrix that permits rapid convergence. The matrix-vector multiplication form of the sequence permits calculations to be performed on a network of parallel processors.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: February 10, 1998
    Assignee: Texas Instruments Incorporated
    Inventors: Subhash Gupta, Ravi Mehrotra
  • Patent number: 5319586
    Abstract: An apparatus and method for performing matrix calculations is provided. The apparatus comprises a computer system having a linearly connected array of processors. Each processor has three inputs, two of which receive data along the linear array. The processors are configured to perform certain multiply-add operations. The methods permit speeded up solution of systems of linear equations and matrix inversion. The methods involve manipulating the matrices and the unknown vector values such that the problem can be solved using vector orthogonalization techniques.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: June 7, 1994
    Assignee: Texas Instruments Incorporated
    Inventors: Subhash Gupta, Ravi Mehrotra
  • Patent number: 5265006
    Abstract: Method and apparatus for a demand scheduled partial carrier load planning system for the transportation industry, designed to distribute planned and random orders, each order having a source point and a destination point in the territory served, and for distributing products and materials in a predetermined geographic territory, primarily intended for use in connection with wheeled vehicles traveling over public highways.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: November 23, 1993
    Assignee: Andersen Consulting
    Inventors: Ajay K. Asthana, Subhash Gupta, Ravi Mehrotra, Sharad Singhal
  • Patent number: 5255184
    Abstract: An airline reservation system implemented using a computer wherein reservations are controlled by a seat inventory control system. The inventory control system produces optimal reservation control using network-wide booking limits while taking into account the probabilistic nature of demand. The inventory control system, based on a concept termed Network-Based Expected Marginal Seat Revenue (EMSR), does not require the large number of variables required by the other network-based approaches, and it incorporates a probabilistic demand model without resorting to computationally intractable integer programming.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: October 19, 1993
    Assignee: Andersen Consulting
    Inventors: Scot W. Hornick, Da D. Hong, Subhash Gupta, Ravi Mehrotra