Patents by Inventor Rabindranath Balasubramanian

Rabindranath Balasubramanian 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: 9203352
    Abstract: A circuit includes a first amplifier circuit and a second amplifier circuit. The second amplifier circuit includes an input coupled to an output of the first amplifier circuit. A pass gate circuit is coupled between first and second inputs of the first amplifier circuit. The pass gate circuit is on during calibration of the second amplifier circuit to short together signals at the first and the second inputs of the first amplifier circuit. The pass gate circuit is off during a normal mode of the first and the second amplifier circuits.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 1, 2015
    Assignee: Altera Corporation
    Inventors: Tim Tri Hoang, Rabindranath Balasubramanian
  • Patent number: 7937601
    Abstract: A programmable system-on-a-chip integrated circuit device comprises a programmable logic block, a non-volatile memory block, an analog sub-system, an analog input/output circuit block, and a digital input/output circuit block. A programmable interconnect architecture includes programmable elements and interconnect conductors. Ones of the programmable elements are coupled to the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, the digital input/output circuit block, and to the interconnect conductors, such that inputs and outputs of the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, and the digital input/output circuit block can be programmably coupled to one another.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: May 3, 2011
    Assignee: Actel Corporation
    Inventors: Greg Bakker, Khaled El-Ayat, Theodore Speers, Limin Zhu, Brian Schubert, Rabindranath Balasubramanian, Kurt Kilkind, Thomas Barraza, Venkatesh Narayanan, John McCollum, William C. Plants
  • Patent number: 7859302
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with voltage-measuring, current-measuring and control circuitry performs voltage measurement and control functions and can be used to control and monitor external power supplies connected to external loads.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: December 28, 2010
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Gregory Bakker
  • Publication number: 20100001760
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with voltage-measuring, current-measuring and control circuitry performs voltage measurement and control functions and can be used to control and monitor external power supplies connected to external loads.
    Type: Application
    Filed: September 8, 2009
    Publication date: January 7, 2010
    Applicant: ACTEL CORPORATION
    Inventors: Rabindranath Balasubramanian, Gregory Bakker
  • Publication number: 20090292937
    Abstract: A programmable system-on-a-chip integrated circuit device comprises a programmable logic block, a non-volatile memory block, an analog sub-system, an analog input/output circuit block, and a digital input/output circuit block. A programmable interconnect architecture includes programmable elements and interconnect conductors. Ones of the programmable elements are coupled to the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, the digital input/output circuit block, and to the interconnect conductors, such that inputs and outputs of the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, and the digital input/output circuit block can be programmably coupled to one another.
    Type: Application
    Filed: August 5, 2009
    Publication date: November 26, 2009
    Inventors: Greg Bakker, Khaled El-Ayat, Theodore Speers, Limin Zhu, Brian Schubert, Rabindranath Balasubramanian, Kurt Kolkind, Thomas Barraza, Venkatesh Narayanan, John McCollum, William C. Plants
  • Patent number: 7616026
    Abstract: An integrated circuit includes a plurality of inputs, a plurality of output pads, a programmable logic block, an analog circuit block, an analog-to-digital converter programmably coupleable to individual analog circuits in the analog circuit block, and an interconnect architecture programmably coupling selected ones of the plurality of inputs, the plurality of outputs, the programmable logic block, the analog circuit block, and the analog-to-digital converter. At least one of the inputs may be programmably configured as one of a digital input programmably coupleable to elements in the programmable logic block or as an analog input to an analog circuit in the analog circuit block.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: November 10, 2009
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Theodore Speers, Gregory Bakker
  • Patent number: 7613943
    Abstract: A programmable system-on-a-chip integrated circuit device comprises a programmable logic block, a non-volatile memory block, an analog sub-system, an analog input/output circuit block, and a digital input/output circuit block. A programmable interconnect architecture includes programmable elements and interconnect conductors. Ones of the programmable elements are coupled to the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, the digital input/output circuit block, and to the interconnect conductors, such that inputs and outputs of the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, and the digital input/output circuit block can be programmably coupled to one another.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 3, 2009
    Assignee: Actel Corporation
    Inventors: Greg Bakker, Khaled El-Ayat, Theodore Speers, Limin Zhu, Brian Schubert, Rabindranath Balasubramanian, Kurt Kolkind, Thomas Barraza, Venkatesh Narayanan, John McCollum, William C. Plants
  • Patent number: 7603578
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with voltage-measuring, current-measuring and control circuitry performs voltage measurement and control functions and can be used to control and monitor external power supplies connected to external loads.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: October 13, 2009
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Gregory Bakker
  • Patent number: 7560954
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and temperature sensing and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with temperature measuring and control circuitry performs temperature measurement and control functions and can be used to create an on-chip temperature log.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: July 14, 2009
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Gregory Bakker
  • Publication number: 20090128186
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with voltage-measuring, current-measuring and control circuitry performs voltage measurement and control functions and can be used to control and monitor external power supplies connected to external loads.
    Type: Application
    Filed: January 8, 2009
    Publication date: May 21, 2009
    Applicant: ACTEL CORPORATION
    Inventors: Rabindranath Balasubramanian, Gregory Bakker
  • Patent number: 7521960
    Abstract: An integrated circuit device includes a programmable logic block, a monitoring input, a condition-sensing circuit coupled to the monitoring input and configured to generate a condition-sensed signal at an output in response to sensing a condition at the monitoring input, a first digital input, a first digital output, and a gating circuit configured in the programmable logic block and coupled between the first digital input and the first digital output. The gating circuit has a gating input coupled to the condition-sensing circuit and generates an output. The output is related to an input state of the first digital input in the absence of the condition-sensed signal and assumes an override state in the presence of the condition-sensed signal.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 21, 2009
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Kurt Kolkind, Gregory Bakker
  • Patent number: 7487376
    Abstract: A programmable system-on-a-chip integrated circuit device comprises a programmable logic block, a non-volatile memory block, an analog sub-system, an analog input/output circuit block, and a digital input/output circuit block. A programmable interconnect architecture includes programmable elements and interconnect conductors. Ones of the programmable elements are coupled to the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, the digital input/output circuit block, and to the interconnect conductors, such that inputs and outputs of the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, and the digital input/output circuit block can be programmably coupled to one another.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 3, 2009
    Assignee: Actel Corporation
    Inventors: Greg Bakker, Khaled El-Ayat, Theodore Speers, Limin Zhu, Brian Schubert, Rabindranath Balasubramanian, Kurt Kolkind, Thomas Barraza, Venkatesh Narayanan, John McCollum, William C. Plants
  • Publication number: 20080303547
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and temperature sensing and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with temperature measuring and control circuitry performs temperature measurement and control functions and can be used to create an on-chip temperature log.
    Type: Application
    Filed: July 24, 2008
    Publication date: December 11, 2008
    Applicant: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Gregory Bakker
  • Publication number: 20080272803
    Abstract: An integrated circuit includes a plurality of inputs, a plurality of output pads, a programmable logic block, an analog circuit block, an analog-to-digital converter programmably coupleable to individual analog circuits in the analog circuit block, and an interconnect architecture programmably coupling selected ones of the plurality of inputs, the plurality of outputs, the programmable logic block, the analog circuit block, and the analog-to-digital converter. At least one of the inputs may be programmably configured as one of a digital input programmably coupleable to elements in the programmable logic block or as an analog input to an analog circuit in the analog circuit block.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 6, 2008
    Applicant: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Theodore Speers, Gregory Bakker
  • Patent number: 7446560
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and temperature sensing and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with temperature measuring and control circuitry performs temperature measurement and control functions and can be used to create an on-chip temperature log.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: November 4, 2008
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Gregory Bakker
  • Publication number: 20080265935
    Abstract: An integrated multi-function analog circuit includes at least one MOSFET gate-drive circuit coupled to a first I/O pad. At least one voltage-sensing circuit is coupled to a second I/O pad. At least one current-sensing circuit is coupled to the second I/O pad and a third I/O pad. At least one temperature-sensing circuit is coupled to a fourth I/O pad.
    Type: Application
    Filed: July 16, 2008
    Publication date: October 30, 2008
    Applicant: Acetel Corporation
    Inventors: Gregory Bakker, Rabindranath Balasubramanian
  • Patent number: 7423451
    Abstract: An integrated circuit includes a plurality of inputs, a plurality of output pads, a programmable logic block, an analog circuit block, an analog-to-digital converter programmably coupleable to individual analog circuits in the analog circuit block, and an interconnect architecture programmably coupling selected ones of the plurality of inputs, the plurality of outputs, the programmable logic block, the analog circuit block, and the analog-to-digital converter. At least one of the inputs may be programmably configured as one of a digital input programmably coupleable to elements in the programmable logic block or as an analog input to an analog circuit in the analog circuit block.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: September 9, 2008
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Limin Zhu, Theodore Speers, Gregory Bakker
  • Patent number: 7414427
    Abstract: An integrated multi-function analog circuit includes at least one MOSFET gate-drive circuit coupled to a first I/O pad. At least one voltage-sensing circuit is coupled to a second I/O pad. At least one current-sensing circuit is coupled to the second I/O pad and a third I/O pad. At least one temperature-sensing circuit is coupled to a fourth I/O pad.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: August 19, 2008
    Assignee: Actel Corporation
    Inventors: Gregory Bakker, Rabindranath Balasubramanian
  • Publication number: 20080122481
    Abstract: A programmable system-on-a-chip integrated circuit device comprises a programmable logic block, a non-volatile memory block, an analog sub-system, an analog input/output circuit block, and a digital input/output circuit block. A programmable interconnect architecture includes programmable elements and interconnect conductors. Ones of the programmable elements are coupled to the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, the digital input/output circuit block, and to the interconnect conductors, such that inputs and outputs of the programmable logic block, the non-volatile memory block, the analog sub-system, the analog input/output circuit block, and the digital input/output circuit block can be programmably coupled to one another.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 29, 2008
    Applicant: ACTEL CORPORATION
    Inventors: Greg Bakker, Khaled El-Ayat, Theodore Speers, Limin Zhu, Brian Schubert, Rabindranath Balasubramanian, Kurt Kolkind, Thomas Barraza, Venkatesh Narayanan, John McCollum, William C. Plants
  • Patent number: 7365565
    Abstract: A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip, face-to-face, or other multiple die configuration. The programmable system-on-a-chip integrated circuit with voltage-measuring, current-measuring and control circuitry performs voltage measurement and control functions and can be used to control and monitor external power supplies connected to external loads.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: April 29, 2008
    Assignee: Actel Corporation
    Inventors: Rabindranath Balasubramanian, Gregory Bakker