Patents by Inventor G. R. Mohan Rao

G. R. Mohan Rao 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: 7869244
    Abstract: Methods and apparatus for controlling an input/output (I/O) driver of an I/O terminal based at least in part on the values being provided to the I/O terminal is disclosed. In various embodiments, a detector is employed. The detector shuts off power to the I/O driver if the digital value being presented is the same as a previously presented digital value.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 11, 2011
    Inventor: G. R. Mohan Rao
  • Patent number: 7855916
    Abstract: A nonvolatile memory system is described with novel architecture coupling nonvolatile storage memory with random access volatile memory. New commands are included to enhance the read and write performance of the memory system.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: December 21, 2010
    Inventor: G. R. Mohan Rao
  • Patent number: 7796458
    Abstract: Embodiments provide methods, apparatuses and systems including a plurality of memory cells configured to store bit values while being powered at a power-saving voltage lower than a normal-operation voltage during operation of a host apparatus, and power circuitry coupled to the plurality of memory cells. The power circuitry is configured to selectively power a first subset of the plurality of memory cells at the normal-operation voltage during operation of the host apparatus while concurrently powering a second subset of the plurality of memory cells at the power-saving voltage. The first and second subsets being different subsets of the memory cells.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: September 14, 2010
    Inventor: G. R. Mohan Rao
  • Patent number: 7787311
    Abstract: Embodiments of the present disclosure provide methods, apparatuses and systems including a storage configured to store and output multiple address strides of varying sizes to enable access and precharge circuitry to access and precharge a first and a second group of memory cells based at least in part on the multiple address strides during operation of the host apparatus/system, the first and second group of memory cells being different groups of memory cells.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: August 31, 2010
    Inventor: G. R. Mohan Rao
  • Publication number: 20100202230
    Abstract: Methods, apparatuses and systems of operating digital memory where the digital memory device including a plurality of memory cells receives a command to perform an operation on a set of memory cells, where the set of memory cells contains fewer memory cells than the device as a whole and where the device performs the operation including selectively precharging on the front end of the operation, in response to the received command, only a set of bit lines associated with the set of memory cells.
    Type: Application
    Filed: April 26, 2010
    Publication date: August 12, 2010
    Applicant: S. Aqua Semiconductor, LLC
    Inventor: G. R. Mohan Rao
  • Publication number: 20100191903
    Abstract: A switch 100 includes a plurality of ports 101 for exchanging data. A shared memory 102 enables the exchange of data between first and second ones of the ports 101 and includes an array 202 of memory cells arranged as a plurality of rows and a single column having width equal to a predetermined word-width and circuitry 202, 204, 206, 208 for writing selected data presented at the first one of the ports 101 to a selected row in the array as a word of the predetermined word-width during a first time period and for reading the selected data from the selected row as a word of the predetermined wordwidth during a second time period for output at a second one of the ports 101.
    Type: Application
    Filed: March 31, 2010
    Publication date: July 29, 2010
    Applicant: S. Aqua Semiconductor, LLC
    Inventor: G. R. Mohan Rao
  • Patent number: 7755961
    Abstract: Methods, apparatuses and systems of operating digital memory where the digital memory device including a plurality of memory cells receives a command to perform an operation on a subset of memory cells, where the subset of memory cells contains fewer memory cells than the device as a whole and where the device selectively precharges, in response to the received command, only a subset of bit lines associated with the subset of memory cells.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: July 13, 2010
    Inventor: G. R. Mohan Rao
  • Patent number: 7724593
    Abstract: Methods, apparatuses and systems of operating digital memory where the digital memory device including a plurality of memory cells receives a command to perform an operation on a set of memory cells, where the set of memory cells contains fewer memory cells than the device as a whole and where the device performs the operation including selectively precharging on the front end of the operation, in response to the received command, only a set of bit lines associated with the set of memory cells.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: May 25, 2010
    Inventor: G. R. Mohan Rao
  • Patent number: 7707330
    Abstract: A switch 100 includes a plurality of ports 101 for exchanging data. A shared memory 102 enables the exchange of data between first and second ones of the ports 101 and includes an array 202 of memory cells arranged as a plurality of rows and a single column having width equal to a predetermined word-width and circuitry 202, 204, 206, 208 for writing selected data presented at the first one of the ports 101 to a selected row in the array as a word of the predetermined word-width during a first time period and for reading the selected data from the selected row as a word of the predetermined wordwidth during a second time period for output at a second one of the ports 101.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: April 27, 2010
    Inventor: G. R. Mohan Rao
  • Publication number: 20100006138
    Abstract: Most semiconductor devices manufactured today, have uniform dopant concentration, either in the lateral or vertical device active (and isolation) regions. By grading the dopant concentration, the performance in various semiconductor devices can be significantly improved. Performance improvements can be obtained in application specific areas like increase in frequency of operation for digital logic, various power MOSFET and IGBT ICS, improvement in refresh time for DRAM's, decrease in programming time for nonvolatile memory, better visual quality including pixel resolution and color sensitivity for imaging ICs, better sensitivity for varactors in tunable filters, higher drive capabilities for JFET's, and a host of other applications.
    Type: Application
    Filed: August 27, 2009
    Publication date: January 14, 2010
    Inventor: G. R. Mohan Rao
  • Publication number: 20090310396
    Abstract: Methods and apparatus for controlling an input/output (I/O) driver of an I/O terminal based at least in part on the values being provided to the I/O terminal is disclosed. In various embodiments, a detector is employed. The detector shuts off power to the I/O driver if the digital value being presented is the same as a previously presented digital value.
    Type: Application
    Filed: August 21, 2009
    Publication date: December 17, 2009
    Applicant: S. Aqua Semiconductor LLC
    Inventor: G.R. Mohan Rao
  • Patent number: 7609546
    Abstract: Digital memory devices and systems, as well as methods of operating digital memory devices, that include a multivalue memory cell with a first and a second gating transistor arranged in parallel, having a first and a second node, respectively, coupled to a storage element, and sensing circuitry coupled to a third and a fourth node of the first and second gating transistors, respectively, to sense a stored voltage of the memory cell. In embodiments, the first and second gating transistors are configured to activate at different threshold voltage levels.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 27, 2009
    Inventor: G. R. Mohan Rao
  • Publication number: 20090244970
    Abstract: Systems, methods, and memory device with row lines and column lines arranged in a matrix configuration with a memory cell coupled to one of the column lines and one of the row lines. The memory cell includes a storage capacitor with a first plate coupled to a storage node, a CMOS-compatible non-volatile storage element having a node coupled to the storage node and configured to hold a charge corresponding to a binary value, and an access transistor coupled to the storage node. The access transistor includes a word line gate, a first node, and a second node, the word line gate being coupled to the one of the plurality of row lines, the first node being coupled to the one of the plurality of column lines, the second node being coupled to the storage node and to said node of the CMOS-compatible non-volatile storage element.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 1, 2009
    Inventor: G.R. Mohan Rao
  • Publication number: 20090237997
    Abstract: Embodiments provide systems, methods, and apparatuses with a plurality of row lines and column lines arranged in a matrix, and at least one memory cell having an access transistor and a CMOS-compatible non-volatile storage element coupled to the access transistor in series. The CMOS-compatible non-volatile storage element includes a node and is configured to hold a charge corresponding to a n-bit binary value where n is an integer greater than 1. The access transistor has a word line gate coupled to a row line, a first node coupled to a column line, a second node coupled to a storage node, with the storage node connected to said node of the CMOS-compatible non-volatile storage element. Access circuitry coupled to the memory cell is configured to activate the memory cell and sense a resulting current corresponding to the n-bit binary value.
    Type: Application
    Filed: March 24, 2008
    Publication date: September 24, 2009
    Applicant: S. AQUA SEMICONDUCTOR, LLC
    Inventor: G. R. Mohan Rao
  • Publication number: 20090225584
    Abstract: Random access memory with CMOS-compatible nonvolatile storage element in series with storage capacitor is described herein. Embodiments may include memory devices and systems that have plurality of row lines, column lines, and memory cells each of which comprising an access transistor, a storage capacitor and a CMOS-compatible non-volatile storage element connected in series. The CMOS-compatible non-volatile storage element may store charges corresponding to a binary value. The node located between the CMOS-compatible non-volatile storage element and the storage capacitor may be defined as a storage node. During read operation, a cell may be selected, and the voltage at the storage node of the cell may be sensed at the corresponding column line, and the binary value may be determined based on at least the sensed voltage.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 10, 2009
    Applicant: S. AQUA SEMICONDUCTOR LLC
    Inventor: G. R. Mohan Rao
  • Patent number: 7580273
    Abstract: Methods and apparatus for controlling an input/output (I/O) driver of an I/O terminal based at least in part on the values being provided to the I/O terminal is disclosed. In various embodiments, a detector is employed. The detector shuts off power to the I/O driver if the digital value being presented is the same as a previously presented digital value.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: August 25, 2009
    Inventor: G. R. Mohan Rao
  • Publication number: 20090182977
    Abstract: Embodiments of the present disclosure provide methods, apparatuses, and systems including a memory arrangement including a first memory, and a second memory operatively coupled to the first memory to serve as an external interface of the memory arrangement to one or more components external to the memory arrangement to access different portions of the first memory concurrently. Other embodiments may be described.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 16, 2009
    Applicant: S. AQUA SEMICONDUCTOR LLC
    Inventor: G. R. Mohan Rao
  • Publication number: 20090182938
    Abstract: Embodiments of the present disclosure provide methods, apparatuses, and systems including a memory device including content addressable memory configured to store an address associated with one or more memory cells while an access operation is performed on the one or more memory cells. Other embodiments may be described.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 16, 2009
    Applicant: S. AQUA SEMICONDUCTOR LLC
    Inventor: G.R. Mohan Rao
  • Publication number: 20090122627
    Abstract: Embodiments of the present disclosure provide methods, apparatuses and systems including a storage configured to store and output multiple address strides of varying sizes to enable access and precharge circuitry to access and precharge a first and a second group of memory cells based at least in part on the multiple address strides during operation of the host apparatus/system, the first and second group of memory cells being different groups of memory cells.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Applicant: S. AQUA SEMICONDUCTOR LLC
    Inventor: G. R. Mohan Rao
  • Publication number: 20090109787
    Abstract: A nonvolatile memory system is described with novel architecture coupling nonvolatile storage memory with random access volatile memory. New commands are included to enhance the read and write performance of the memory system.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 30, 2009
    Inventor: G.R. Mohan Rao