Patents by Inventor M. Rao

M. 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: 12028077
    Abstract: A phase detector circuit for use with a multi-level signaling communication protocol on a serial communication link is disclosed. The phase detector circuit employs multiple phase and logic circuits to detect data state changes between adjacent ones of voltage levels corresponding to different data states in the communication protocol, and generates early/late signals using the detected data state changes. The phase detector circuit statistically filters data state transitions between non-adjacent voltage levels to improve phase locking and reduce recovered clock jitter.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: July 2, 2024
    Assignee: Apple Inc.
    Inventors: Wenbo Liu, Gokce Gurun, Ajay M. Rao, Sanjeev K. Maheshwari
  • Patent number: 12021538
    Abstract: A receiver circuit that limits the frequency of a clock signal used in a computer system is disclosed. An embodiment of the receiver circuit includes a front-end circuit that generates an equalized signal, a clock generator circuit that generates a clock signal using a plurality of samples of the equalized signal, and a measurement circuit. The measurement circuit monitors a frequency of the clock signal and generates an indication signal in response to determining that the frequency of the clock signal exceeds a threshold frequency. The clock generator circuit uses the indication signal to adjust a frequency of the clock signal.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: June 25, 2024
    Assignee: Apple Inc.
    Inventors: Jose A. Tierno, Ajay M. Rao
  • Publication number: 20240201779
    Abstract: Techniques for a dynamic radar mode modulation feature are described herein. A computer system associated with a device may implement a first radar configuration for a radar sensor. The first radar configuration may correspond to a first mode and comprise a first frame per second rate and a first difference threshold. The computer system may receive first data from the radar sensor in the first radar configuration. The computer system may determine a presence of an object within a field of view of the radar sensor based on the first data and the first difference threshold. The computer system may instruct the device to turn on based on determining the presence of the user. The radar sensor may be instructed to implement a second radar configuration associated with a second mode.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 20, 2024
    Inventors: Zheda Li, Morris Yuanhsiang Hsu, Vivek Yenamandra, Aditya V. Padaki, Raghunandan M Rao, Abhishek Sanaka, Rohit Kumar, Sai Prashanth Chinnapalli
  • Patent number: 11966948
    Abstract: Online advertisers may demand compliance with certain standards for the content of emails and other digital content with which its advertisements may be associated. Emails may contain control objects directing users to a web page showing content related to oil change coupons. However, in some systems, methods, and processes, a small variable proportion of users may instead be directed to a different sequence of pages to conduct a compliance check on the contents of the email received by the user. The compliance check sequence of pages may offer the user an incentive to forward the email to a specified email address for subsequent compliance review. Delivery of an incentive may be conditioned on successful receipt of the forwarded email.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: April 23, 2024
    Assignee: System1, LLC
    Inventors: John Andrew Fries, Erik Ahern Price, Sanjeev M. Rao
  • Patent number: 11947891
    Abstract: Methods and systems for circuit design are described. A tool may detect a timing violation on a signal path connected to a local clock buffer in a circuit model. The local clock buffer may be configured to generate a first clock signal having a first pulse width. The tool may determine a first metric associated with a first type of timing violation, and may determine a second metric associated with a second type of timing violation different from the first type of timing violation. The detected timing violation may be one of the first type and second type of timing violations. The tool may, based on the first metric and the second metric, determine whether to retain the generation of the first clock signal or to configure the local clock buffer to generate a second clock signal having a second pulse width different from the first pulse width.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: April 2, 2024
    Assignee: International Business Machines Corporation
    Inventors: Rahul M Rao, Jayaprakash Udhayakumar, Mithula Madiraju
  • Publication number: 20240104277
    Abstract: A method, system, and computer program product are disclosed for implementing enhanced noise impact on function (NIOF) analysis of an IC design having nets in multiple different variable voltage domains next to each other and modeling all multiple worst-case victim-aggressor voltage configurations in a single run leveraging noise abstracts characterized at a single voltage corner. The NIOF analysis enables accurately identifying incorrect victim switching or functional fails, effectively and efficiently providing design verification and the ability to sign-off an IC design with a single run, and enable modifying an integrated circuit design to fix NIOF failures, and fabricating an integrated circuit.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Inventors: Steven Joseph KURTZ, Michael Henry SITKO, Rahul M. RAO, Sanjay UPRETI, Ajith Kumar Madathil CHANDRASEKARAN
  • Patent number: 11928708
    Abstract: Dynamic campaign optimization systems and methods may be used to continuously test many alternative campaign configurations while allowing all configurations, including configurations formerly identified as successful and unsuccessful, to be re-tested in order to identify successful configurations that may previously have been identified as unsuccessful.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 12, 2024
    Assignee: SYSTEMI OPCO, LLC
    Inventors: Nathan R. Janos, Sanjeev M. Rao, John W. Meacham, III, Gyu-Ho Lee
  • Patent number: 11928409
    Abstract: A computer-implemented method includes receiving, by a processor, a physical design block and a physical hierarchy of a chip design of a chip. Further, the method includes extracting, by the processor, one or more features of a macro to be added to the chip design based on a logic synthesis of the chip design. Further, the method includes predicting, by the processor, specifications of the macro to be added to the chip design based on the physical design block, the predicting performed using a pre-trained machine learning model. Further, the method includes using, by the processor, the specifications of the macro to perform a physical synthesis of the chip design to determine a physical layout of the chip.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: March 12, 2024
    Assignee: International Business Machines Corporation
    Inventors: Daniel Lewis, Rahul M Rao
  • Patent number: 11922109
    Abstract: Embodiments include predictive antenna diode insertion. Aspects of the invention include obtaining a design of a macro, the design including an internal pin disposed on a first layer of the macro. Aspects of the invention also include determining a length of a wire needed to connect the internal pin to a furthest edge of the macro for each of two layers above the layer the internal pin. Aspects of the invention further include adding, to the design of the macro, an antenna diode to the internal pin based on the determination that an area of the wire needed exceeds a threshold value, wherein the area of the wire is based on the length and a width of the wire.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: March 5, 2024
    Assignee: International Business Machines Corporation
    Inventors: Amanda Christine Venton, Michael Alexander Bowen, Rahul M. Rao
  • Patent number: 11860925
    Abstract: In some examples, human centered computing based digital persona generation may include generating, for a digital persona that is to be generated for a target person, synthetic video files and synthetic audio files that are combined to generate synthetic media files. The digital persona may be generated based on a synthetic media file. An inquiry may be received from a user of the generated digital persona. Another synthetic media file may be used by the digital persona to respond to the inquiry. A real-time emotion of the user may be analyzed based on a text sentiment associated with the inquiry, and a voice sentiment and a facial expression associated with the user. Based on the real-time emotion of the user, a further synthetic media file may be utilized by the digital persona to continue or modify a conversation between the generated digital persona and the user.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: January 2, 2024
    Assignee: ACCENTURE GLOBAL SOLUTIONS LIMITED
    Inventors: Nisha Ramachandra, Manish Ahuja, Raghotham M Rao, Neville Dubash, Sanjay Podder, Rekha M. Menon
  • Patent number: 11840454
    Abstract: Methods for synthesis of high surface area porous silicon-based materials and structures that can be formed according to the methods are described. Methods are scalable and capable of producing large quantities of the high surface area materials with high efficiency. The high surface area products can be in the form of a 3D network of interconnected arms or quills with multimodal porosity including high level pores between and among arms, hollow cores of the arms of the network, and pores through the walls of the arms of the network.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: December 12, 2023
    Assignee: CLEMSON UNIVERSITY
    Inventors: Srikanth Pilla, Morteza Sabet, Apparao M. Rao, Nancy Chen
  • Publication number: 20230378962
    Abstract: A receiver circuit that limits the frequency of a clock signal used in a computer system is disclosed. An embodiment of the receiver circuit includes a front-end circuit that generates an equalized signal, a clock generator circuit that generates a clock signal using a plurality of samples of the equalized signal, and a measurement circuit. The measurement circuit monitors a frequency of the clock signal and generates an indication signal in response to determining that the frequency of the clock signal exceeds a threshold frequency. The clock generator circuit uses the indication signal to adjust a frequency of the clock signal.
    Type: Application
    Filed: May 20, 2022
    Publication date: November 23, 2023
    Inventors: Jose A. Tierno, Ajay M. Rao
  • Publication number: 20230305552
    Abstract: A system and method is provided for correction of sensors in an industrial process. A first sensor provides first data corresponding to measured variables for at least one respective process component, which are further aggregated in data storage with corresponding contextual tags comprising time series identifiers. For a given sample from the industrial process, at least the first data having a corresponding time series identifier are obtained for comparison with second data collected via a second sensor and which comprises measured variables corresponding to the at least one respective process component from the given sample. A feedback signal is selectively generated based on a determined error between the collected first data and the collected second data corresponding to the given sample, and may in an embodiment be used for automatically calibrating the first sensor. The feedback signal may further or alternatively be used to prompt interventions in the first sensor.
    Type: Application
    Filed: March 23, 2023
    Publication date: September 28, 2023
    Inventors: Narasimha M. Rao, Ryan Carli
  • Patent number: 11751654
    Abstract: A contact lens package includes a first layer, a support coupled to the first layer, a lens, and a second layer. The support includes a scaffold and a porous member attached to the scaffold where the porous member includes a curved surface. The lens includes an anterior surface and a posterior surface, and the posterior surface of the lens is disposed on the curved surface of the porous member. The second layer is coupled to the first layer to seal the support and the lens between the first layer and the second layer.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: September 12, 2023
    Assignee: Bausch + Lomb Ireland Limited
    Inventors: Baxter J. Lansing, Arvind M. Rao, James Dibella, Joseph W. Hoff
  • Publication number: 20230214563
    Abstract: A computer-implemented method includes receiving, by a processor, a physical design block and a physical hierarchy of a chip design of a chip. Further, the method includes extracting, by the processor, one or more features of a macro to be added to the chip design based on a logic synthesis of the chip design. Further, the method includes predicting, by the processor, specifications of the macro to be added to the chip design based on the physical design block, the predicting performed using a pre-trained machine learning model. Further, the method includes using, by the processor, the specifications of the macro to perform a physical synthesis of the chip design to determine a physical layout of the chip.
    Type: Application
    Filed: January 3, 2022
    Publication date: July 6, 2023
    Inventors: Daniel Lewis, Rahul M Rao
  • Patent number: 11644390
    Abstract: Systems and methods are disclosed herein for contextual data analysis and proactive intervention in industrial plant processes. Each of multiple data streams in an industrial plant are mapped to a common hierarchical data structure, wherein the data streams correspond to respective values or states associated with unit operations, assets, and process streams in the plant. The mapped data streams define hierarchical process relationships between subsets of the unit operations, assets, and process streams. Real-time data is collected to populate at least one level of the hierarchical data structure for certain data streams, wherein future outcomes are predicted for downstream operations based on the collected real-time data for at least one data stream, and at least one other data stream having a defined hierarchical process relationship therewith.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: May 9, 2023
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Narasimha M. Rao, Arun Kumar Raju Ganesan, John Carter
  • Patent number: 11633789
    Abstract: A method for fabricating heat exchangers using additive manufacturing technologies. Additive manufacturing enables the manufacture of heat exchangers with complex geometries and/or with internal and external integral surface features. Additive manufacture also facilitates the manufacture of heat exchangers with regional variations, such as changes in size, shape and surface features. In one embodiment, the present invention provides a heat exchanger with a helicoidal shape that provides axial elastic compliance. In one embodiment, the internal channel of the heat exchanger varies along its length. The internal channel may have a cross-sectional area that increases progressively from one end to the other. In one embodiment, the external shape of the tubular structure may be non-circular to optimize heat transfer with an external heat transfer fluid. In one embodiment, the present invention provides a heat pipe with an internal wicking structure formed as an integral part of the additive manufacturing process.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: April 25, 2023
    Assignee: UT-Battelle, LLC
    Inventors: Edgar Lara-Curzio, Corson L. Cramer, Amelia M. Elliott, Brian A. Fricke, Prashant K. Jain, Richard R. Lowden, Kashif Nawaz, Vivek M. Rao, Matthew J. Sandlin
  • Patent number: 11637359
    Abstract: Embedded antennas in integrated circuits, and methods of making and using the same, are provided herein. An integrated circuit within a semiconductor die may include a control circuit; an antenna configured to wirelessly receive a control signal at a predefined frequency; and an interconnect configured to provide the received control signal from the antenna to the control circuit. The control circuit may be configured to control a function of the integrated circuit responsive to the received control signal.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: April 25, 2023
    Assignee: THE AEROSPACE CORPORATION
    Inventors: Vikram M. Rao, Vahagn Petrosyan
  • Patent number: 11630007
    Abstract: Pressure/strain piezoresistive are described that include a poled piezoelectric polymer such as PVDF or P(VDF-TrFE) and graphene. The poled piezoelectric polymer and the graphene are electronically coupled to form a heterojunction and provide an ultra-high sensitivity pressure/strain sensor. The sensors can be carried on a flexible supporting substrate such as PDMS or PET to exhibit high flexibility. The materials of formation can be biocompatible and the sensors can be wearable or implantable.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: April 18, 2023
    Assignee: Clemson University
    Inventors: Soaram Kim, Goutam Koley, Yongchang Dong, Apparao M. Rao
  • Publication number: 20230084473
    Abstract: A network entity controls delivery of information to user devices over bearer paths including unicast channels and multicast channels. The network entity may interoperate in any of a number of network architectures, including 3GPP Internet Protocol Multimedia Subsystem (IMS) and 3GPP2 Multimedia Domain (MMD). The network entity may provide functionality of a modified 3GPP2 Broadcast and Multicast Service (BCMCS) controller component configured to enable BCMCS signaling protocol transactions to occur over 3GPP IMS interfaces and/or 3GPP2 MMD interfaces. A network entity configured to interoperate in a 3GPP IMS and/or 3GPP2 MMD network architecture may provide network-mobile multimedia services to user devices. Content associated with the multimedia services may be stored in storage devices in the network. A common interface through which a network operator defines service-specific parameters of a number of unicast and multicast multimedia services deployed in a distribution network may be provided.
    Type: Application
    Filed: September 8, 2022
    Publication date: March 16, 2023
    Inventors: FABIO M. CHIUSSI, ROSHAN M. RAO