Patents by Inventor Rajaram Subramoniam

Rajaram Subramoniam 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: 9450651
    Abstract: In a first inductive structure, a first data coil includes: a first portion for conducting a first common mode current in a first direction; and a second portion for conducting a second common mode current in a second direction opposite the first direction. The first and second portions of the first data coil are connected at a first node. In a second inductive structure, a second data coil includes: a first portion for conducting a third common mode current in the first direction; and a second portion for conducting a fourth common mode current in the second direction. The first and second portions of the second data coil are connected at a second node galvanically isolated from the first node. The first, second, third and fourth common mode currents are induced by a common mode transient.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: September 20, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Rajaram Subramoniam, Gianpaolo Lisi, Swaminathan Sankaran, Bradley Allen Kramer, Gerard Socci
  • Patent number: 9337905
    Abstract: An inductive structure includes a power coil and a data coil. The data coil is substantially centered within the power coil. A first portion of the data coil conducts current in a first direction. A second portion of the data coil conducts current in a second direction opposite the first direction. The first portion of the data coil is connected at a node to the second portion of the data coil. The node is coupled to a ground.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: May 10, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Gianpaolo Lisi, Gerard Socci, Ali Djabbari, Rajaram Subramoniam
  • Publication number: 20150004904
    Abstract: An inductive structure includes a power coil and a data coil. The data coil is substantially centered within the power coil. A first portion of the data coil conducts current in a first direction. A second portion of the data coil conducts current in a second direction opposite the first direction. The first portion of the data coil is connected at a node to the second portion of the data coil. The node is coupled to a ground.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 1, 2015
    Applicant: Texas Instruments Incorporated
    Inventors: Gianpaolo Lisi, Gerard Socci, Ali Djabbari, Rajaram Subramoniam
  • Publication number: 20150004907
    Abstract: In a first inductive structure, a first data coil includes: a first portion for conducting a first common mode current in a first direction; and a second portion for conducting a second common mode current in a second direction opposite the first direction. The first and second portions of the first data coil are connected at a first node. In a second inductive structure, a second data coil includes: a first portion for conducting a third common mode current in the first direction; and a second portion for conducting a fourth common mode current in the second direction. The first and second portions of the second data coil are connected at a second node galvanically isolated from the first node. The first, second, third and fourth common mode currents are induced by a common mode transient.
    Type: Application
    Filed: June 23, 2014
    Publication date: January 1, 2015
    Inventors: Rajaram Subramoniam, Gianpaolo Lisi, Swaminathan Sankaran, Bradley Allen Kramer, Gerard Socci
  • Patent number: 8810068
    Abstract: A solar panel array for use in a solar cell power system is provided. The solar panel array includes a string of solar panels and multiple voltage converters. Each voltage converter is coupled to a corresponding solar panel in the string of solar panels. The solar panel array also includes multiple maximum power point tracking (MPPT) controllers. Each MPPT controller is coupled to a corresponding solar panel in the string of solar panels. Each MPPT controller is configured to sense an instantaneous power unbalance between the corresponding solar panel and an inverter.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: August 19, 2014
    Assignee: National Semiconductor Corporation
    Inventors: Gianpaolo Lisi, Ali Djabbari, Gerard Socci, Andrew Ronald Chemistruck, Rajaram Subramoniam, Jianhui Zhang, Kosha Mahmodieh
  • Patent number: 8380905
    Abstract: A system includes a master device and multiple slave devices. The system also includes multiple bus interfaces forming a communication bus that couples the master and slave devices. Each bus interface includes a primary interface unit configured to communicate over first and second buses, where the first and second buses form a portion of the communication bus. Each bus interface also includes a secondary interface unit configured to communicate with the primary interface unit and to communicate with one of the slave devices over a third bus. Each bus interface further includes an isolator configured to electrically isolate the primary interface unit and the secondary interface unit. The primary interface unit is configured to receive multiple commands over the first bus, execute a first subset of commands, transmit a second subset of commands over the second bus, and transmit a third subset of commands over the third bus.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: February 19, 2013
    Assignee: National Semiconductor Corporation
    Inventors: Ali Djabbari, Rajaram Subramoniam, Gerard Socci, Kosha Mahmodieh, Ali Kiaei
  • Publication number: 20110289248
    Abstract: A system includes a master device and multiple slave devices. The system also includes multiple bus interfaces forming a communication bus that couples the master and slave devices. Each bus interface includes a primary interface unit configured to communicate over first and second buses, where the first and second buses form a portion of the communication bus. Each bus interface also includes a secondary interface unit configured to communicate with the primary interface unit and to communicate with one of the slave devices over a third bus. Each bus interface further includes an isolator configured to electrically isolate the primary interface unit and the secondary interface unit. The primary interface unit is configured to receive multiple commands over the first bus, execute a first subset of commands, transmit a second subset of commands over the second bus, and transmit a third subset of commands over the third bus.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: NATIONAL SEMICONDUCTOR CORPORATION
    Inventors: Ali Djabbari, Rajaram Subramoniam, Gerard Socci, Kosha Mahmodieh, Ali Kiaei
  • Publication number: 20100327659
    Abstract: A solar panel array for use in a solar cell power system is provided. The solar panel array includes a string of solar panels and multiple voltage converters. Each voltage converter is coupled to a corresponding solar panel in the string of solar panels. The solar panel array also includes multiple maximum power point tracking (MPPT) controllers. Each MPPT controller is coupled to a corresponding solar panel in the string of solar panels. Each MPPT controller is configured to sense an instantaneous power unbalance between the corresponding solar panel and an inverter.
    Type: Application
    Filed: April 16, 2010
    Publication date: December 30, 2010
    Applicant: National Semiconductor Corporation
    Inventors: Gianpaolo Lisi, Ali Djabbari, Gerand Socci, Andrew Ronald Chemistruck, Rajaram Subramoniam, Jianhui Zhang, Kosha Mahmodieh
  • Patent number: 7352704
    Abstract: A fast, low-complexity detection scheme for determining the delays and gains of different propagation paths (i.e., multi-paths) of a received WCDMA signal. The method utilizes a continuous pilot channel that is scrambled by an known pseudo-random sequence. The received signal is provided to a multi-path searcher that passes the received signal through a matched filter with a specified number of taps. The matched filter correlates the received signal with the pilot channel. The multi-path gain and delay detection is then performed, and the delays and gains are reported for use in the WCDMA system.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: April 1, 2008
    Assignee: National Semiconductor Corporation
    Inventors: Karim Nassiri Toussi, Rajaram Subramoniam, Huoy-Bing Lim, Debarag Banerjee
  • Patent number: 6958712
    Abstract: A channelization code is generated in response to a spreading factor and a code number. The code number is right justified to provide a right-justified code number. The right-justified code number is stored in an eight-bit register. An eight-bit binary counter is arranged to provide a binary count. The binary counter is reset when the binary count reaches a value equal to the spreading factor minus one. A channelization logic circuit is configured to convert the binary count and the stored right-justified code number into the channelization code. According to one example, the channelization logic circuit comprises eight AND gates and eight XOR gates. A channelization code generator circuit may be integrated into an integrated chip that has a small silicon area and low power consumption.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: October 25, 2005
    Assignee: National Semiconductor Corporation
    Inventor: Rajaram Subramoniam