Patents by Inventor Mahesh Gopalan
Mahesh Gopalan 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: 9805784Abstract: Circuits and methods are described for a DDR memory controller where two different DQS gating modes are utilized. These gating modes together ensure that the DQS signal, driven by a DDR memory to the memory controller, is only available when read data is valid. Two types of gating logic are used: Initial DQS gating logic, and Functional DQS gating logic. The Initial gating logic has additional timing margin in the Initial DQS gating value to allow for the unknown round trip timing during initial bit levelling calibration. DQS functional gating is then optimized during further calibration to gate DQS precisely as latency and phase calibration are performed, resulting in a precise gating value for Functional DQS gating. Providing dual gating modes is especially useful when data capture is performed at half the DQS frequency in view of rising clock rates for DDR memories.Type: GrantFiled: August 26, 2016Date of Patent: October 31, 2017Assignee: Uniquify, Inc.Inventors: Mahesh Gopalan, David Wu, Venkat Iyer
-
Patent number: 9584309Abstract: A circuit and method for implementing an adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: GrantFiled: March 23, 2016Date of Patent: February 28, 2017Assignee: Uniquify, Inc.Inventor: Mahesh Gopalan
-
Publication number: 20160365135Abstract: Circuits and methods are described for a DDR memory controller where two different DQS gating modes are utilized. These gating modes together ensure that the DQS signal, driven by a DDR memory to the memory controller, is only available when read data is valid. Two types of gating logic are used: Initial DQS gating logic, and Functional DQS gating logic. The Initial gating logic has additional timing margin in the Initial DQS gating value to allow for the unknown round trip timing during initial bit levelling calibration. DQS functional gating is then optimized during further calibration to gate DQS precisely as latency and phase calibration are performed, resulting in a precise gating value for Functional DQS gating. Providing dual gating modes is especially useful when data capture is performed at half the DQS frequency in view of rising clock rates for DDR memories.Type: ApplicationFiled: August 26, 2016Publication date: December 15, 2016Inventors: Mahesh GOPALAN, David WU, Venkat IYER
-
Publication number: 20160254903Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: ApplicationFiled: March 23, 2016Publication date: September 1, 2016Inventor: Mahesh Gopalan
-
Patent number: 9431091Abstract: Circuits and methods are described for a DDR memory controller where two different DQS gating modes are utilized. These gating modes together ensure that the DQS signal, driven by a DDR memory to the memory controller, is only available when read data is valid. Two types of gating logic are used: Initial DQS gating logic, and Functional DQS gating logic. The Initial gating logic has additional timing margin in the Initial DQS gating value to allow for the unknown round trip timing during initial bit levelling calibration. DQS functional gating is then optimized during further calibration to gate DQS precisely as latency and phase calibration are performed, resulting in a precise gating value for Functional DQS gating. Providing dual gating modes is especially useful when data capture is performed at half the DQS frequency in view of rising clock rates for DDR memories.Type: GrantFiled: October 13, 2015Date of Patent: August 30, 2016Assignee: UNIQUIFY, INC.Inventors: Mahesh Gopalan, David Wu, Venkat Iyer
-
Patent number: 9300443Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: GrantFiled: May 8, 2014Date of Patent: March 29, 2016Assignee: Uniquify, Inc.Inventor: Mahesh Gopalan
-
Publication number: 20160035409Abstract: Circuits and methods are described for a DDR memory controller where two different DQS gating modes are utilized. These gating modes together ensure that the DQS signal, driven by a DDR memory to the memory controller, is only available when read data is valid. Two types of gating logic are used: Initial DQS gating logic, and Functional DQS gating logic. The Initial gating logic has additional timing margin in the Initial DQS gating value to allow for the unknown round trip timing during initial bit levelling calibration. DQS functional gating is then optimized during further calibration to gate DQS precisely as latency and phase calibration are performed, resulting in a precise gating value for Functional DQS gating. Providing dual gating modes is especially useful when data capture is performed at half the DQS frequency in view of rising clock rates for DDR memories.Type: ApplicationFiled: October 13, 2015Publication date: February 4, 2016Inventors: Mahesh GOPALAN, David WU, Venkat IYER
-
Publication number: 20150006980Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: ApplicationFiled: May 8, 2014Publication date: January 1, 2015Applicant: UNIQUIFY, INC.Inventor: Mahesh Gopalan
-
Publication number: 20140372787Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: ApplicationFiled: May 8, 2014Publication date: December 18, 2014Applicant: UNIQUIFY, INC.Inventor: Mahesh Gopalan
-
Publication number: 20140281666Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: ApplicationFiled: May 8, 2014Publication date: September 18, 2014Applicant: UNIQUIFY, INC.Inventor: Mahesh Gopalan
-
Publication number: 20140281662Abstract: A circuit and method for implementing a adaptive bit-leveling function in an integrated circuit interface is disclosed. During a calibration operation, a pre-loaded data bit pattern is continuously sent from a sending device and is continuously read from an external bus by a receiving device. A programmable delay line both advances and delays each individual data bit relative to a sampling point in time, and delay counts relative to a reference point in time are recorded for different sampled data bit values, enabling a delay to be determined that best samples a data bit at its midpoint. During the advancing and delaying of a data bit, jitter on the data bit signal may cause an ambiguity in the determination of the midpoint, and solutions are disclosed for detecting jitter and for resolving a midpoint for sampling a data bit even in the presence of the jitter.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Inventor: Mahesh Gopalan
-
Patent number: 8661356Abstract: A method, including executing instructions recorded on a non-transitory computer-readable storage media using at least one processor, may include loading a component from a repository in a first user interface, notifying a second user interface that the component is loaded in the first user interface, performing one or more checks on the component using a check engine and generating one or more check results, storing the check results in a buffer and displaying the check results in the second user interface. The first user interface, the second user interface, the buffer and the check engine may be integrated modules of a single application.Type: GrantFiled: August 30, 2010Date of Patent: February 25, 2014Assignee: SAP AGInventors: Hilmar Demant, Mahesh Gopalan, Vinod S. Nair, Jayakanth R, Aaby Sivakumar, Abdul Aziz, Debobrata Bose, Indranil Dutt, Niels Hebling, Carsten Brandt
-
Publication number: 20120060141Abstract: Systems and methods for providing an integrated computer environment for software design and implementation are described. A number of UI components are connected in several sequences in the integrated computer environment. Each sequence describes a screenflow corresponding to a particular task in a software application. The screenflows are combined in a normalized interaction diagram representing the sequences of screens for every task that could be performed in the software application. The interaction diagram aggregates the similar UI components in different screenflows to avoid redundant duplicates. The UI components are bound to at least one business object (BO) as defined in a backend computer system. The software application is implemented and ready to be executed after the binding.Type: ApplicationFiled: September 4, 2010Publication date: March 8, 2012Inventors: HILMAR DEMANT, Abdul Aziz, Debobrata Bose, Indranil Dutt, Mahesh Gopalan, Niels Hebling, Jayakanth R, Vinod S. Nair, Aaby Sivakumar
-
Publication number: 20120054659Abstract: A method, including executing instructions recorded on a non-transitory computer-readable storage media using at least one processor, may include loading a component from a repository in a first user interface, notifying a second user interface that the component is loaded in the first user interface, performing one or more checks on the component using a check engine and generating one or more check results, storing the check results in a buffer and displaying the check results in the second user interface. The first user interface, the second user interface, the buffer and the check engine may be integrated modules of a single application.Type: ApplicationFiled: August 30, 2010Publication date: March 1, 2012Applicant: SAP AGInventors: Hilmar Demant, Mahesh Gopalan, Vinod S. Nair, Jayakanth R., Aaby Sivakumar, Abdul Aziz, Debobrata Bose, Indranil Dutt, Niels Hebling, Carsten Brandt
-
Publication number: 20120030612Abstract: A non-transitory recordable storage medium having recorded and stored thereon instructions that, when executed, may perform the actions of assigning an object as a selected object in a property window in response to a selection of the object, the object including a driven property and a driving property, reading one or more properties of the selected object, determining an instance value of the driving property using a custom property descriptor and returning a value of the driven property based on the instance value of the driving property using the custom property descriptor.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Applicant: SAP AGInventors: Abdul Aziz, Debobrata Bose, Hilmar Demant, Indranil Dutt, Mahesh Gopalan, Niels Hebling, Jayakanth R, Vinod S. Nair, Aaby Sivakumar
-
Patent number: 7975164Abstract: A DDR memory controller is described wherein a core domain capture clock is created by programmably delaying the core clock of the memory controller. The delay of this capture clock is calibrated during a power on the initialization sequence in concert with a DDR memory in a system environment, thereby minimizing the effects of system delays and increasing both device and system yield. An additional embodiment also includes programmably delaying the incoming dqs signal.Type: GrantFiled: June 6, 2008Date of Patent: July 5, 2011Assignee: Uniquify, IncorporatedInventors: Jung Lee, Mahesh Gopalan
-
Patent number: 7877581Abstract: A networking application processor is provided. The processor includes an input socket configured to receive data packets. The processor includes a memory for holding instructions and circuitry configured to access data structures associated with the processing stages. The circuitry configured to access data structures enables a single cycle access to an operand from a memory location. An arithmetic logic unit (ALU) is provided. Circuitry for aligning operands to be processed by the ALU is included. The circuitry for aligning the operands causes the operand to be aligned by a lowest significant bit, wherein the circuitry for aligning the operand supplies an extension to the operand to allow the ALU to process different size operands.Type: GrantFiled: December 2, 2003Date of Patent: January 25, 2011Assignee: PMC-Sierra US, Inc.Inventors: Shridhar Mukund, Mahesh Gopalan, Neeraj Kashalkar
-
Publication number: 20090307521Abstract: A DDR memory controller is described wherein a core domain capture clock is created by programmably delaying the core clock of the memory controller. The delay of this capture clock is calibrated during a power on the initialization sequence in concert with a DDR memory in a system environment, thereby minimizing the effects of system delays and increasing both device and system yield. An additional embodiment also includes programmably delaying the incoming dqs signal.Type: ApplicationFiled: June 6, 2008Publication date: December 10, 2009Inventors: Jung Lee, Mahesh Gopalan
-
Patent number: 7571258Abstract: A method for efficiently processing layers of a data packet is provided. The method initiates with defining a pipeline of processors communicating with a distributed network and CPU of a host system. Then, a data packet from the distributed network is received into a first stage of the pipeline. Next, the data packet is processed to remove a header associated with the first stage. Then, the processed data packet is transmitted to a second stage. The operations of processing and transmitting the processed data packet are repeated for successive stages until a header associated with a final stage has been removed. Then, the data packet is transmitted to the CPU of the host system. It should be appreciated that the header is not necessarily transformed at each stage. For example, suitable processing that does not strip the header may be applied at each stage.Type: GrantFiled: November 19, 2003Date of Patent: August 4, 2009Assignee: Adaptec, Inc.Inventors: Shridhar Mukund, Anjan Mitra, Mahesh Gopalan
-
Patent number: 7320013Abstract: A method for transparently presenting different size operands to be processed is provided. The method initiates with providing a first operand having a first bit-width. Then, a bit width of a second operand associated with a processor is determined. The second operand has a greater bit width than the first operand. Next, the first operand is transformed by aligning a least significant bit of the first operand to a lowest bit position of a transformed operand having a bit size equal to the second operand. Then, the bits of the transformed operand are sign extended and padded in a manner to allow carry propagation. Next, the transformed operand is transmitted to the processor. A method for shifting operands and a processor are also provided.Type: GrantFiled: December 2, 2003Date of Patent: January 15, 2008Assignee: Adaptec, Inc.Inventors: Shridhar Mukund, Mahesh Gopalan, Neeraj Kashalkar