Patents by Inventor Subbarao Arumilli

Subbarao Arumilli 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: 12143288
    Abstract: A signaling-link retimer concatenates discontiguous leading and trailing portions of a precoded and scrambled symbol stream, shunting the trailing portion of the stream ahead of unneeded stream content to dynamically reduce the number of symbols queued between retimer input and output and thus reduce retimer transit latency.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: November 12, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Casey Morrison, Enrique Musoll, Jitendra Mohan, Pulkit Khandelwal, Subbarao Arumilli, Vikas Khandelwal, Ken (Keqin) Han, Charan Enugala, Vivek Trivedi, Chi Feng
  • Patent number: 12095480
    Abstract: A memory control component encodes over-capacity data into an error correction code generated for and stored in association with an application data block, inferentially recovering the over-capacity data during application data block read-back by comparing error syndromes generated in detection/correction operations for respective combinations of each possible value of the over-capacity data and the read-back application data block.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: September 17, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Anh T. Tran, Subbarao Arumilli, Chi Feng
  • Patent number: 12061793
    Abstract: A decoding engine within an integrated-circuit (IC) component iteratively executes error detection/correction operations with respect to a sequence of input data volumes to generate a corresponding sequence of error syndrome values, the input data volumes each including a first block of data and corresponding error correction code retrieved from one or more external memory components together with a respective one of a plurality of q-bit data patterns. Selector circuitry within the decoding engine selects one of the plurality of q-bit data patterns to be an output q-bit value according to error-count differentiation indicated by the error syndrome values.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: August 13, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Anh T. Tran, Subbarao Arumilli, Chi Feng
  • Patent number: 12032479
    Abstract: A memory control device implements split storage of user-data and metadata components of a compound write data word, outputting the user-data component via a memory control interface for storage within an external memory subsystem while separately storing the metadata component within a metadata cache implemented within the memory control device.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: July 9, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Subbarao Arumilli, Anh T. Tran
  • Patent number: 12003610
    Abstract: First and second clock signals are generated based on signal transitions within first and second streams of symbols, respectively, received within an integrated circuit component, the first and second clock signals having a time-varying phase offset with respect to one another. A first control circuit, operating in a first timing domain established by the first clock signal, generates first control information based on the first stream of symbols and forwards the first control information, via a domain crossing circuit that bridges the time-varying phase offset, to a second control circuit operating in a second timing domain. The second control circuit generates a third stream of symbols based on the first control information and on the second stream of symbols, and a transmit circuit outputs the third stream of symbols from the integrated circuit component synchronously with respect to the second clock signal.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: June 4, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Casey Morrison, Ken (Keqin) Han, Pulkit Khandelwal, Subbarao Arumilli
  • Patent number: 11949629
    Abstract: A signaling link retimer injects flow-rate compensation transmissions into a synthesized symbol stream in coordination with flow-rate compensation transmissions detected within a received symbol stream, enabling the retimer to switch seamlessly between forwarding the received symbol stream and outputting the synthesized symbol stream.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: April 2, 2024
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Subbarao Arumilli, Ken (Keqin) Han, Pulkit Khandelwal, Casey Morrison
  • Publication number: 20240054072
    Abstract: A memory control device implements split storage of user-data and metadata components of a compound write data word, outputting the user-data component via a memory control interface for storage within an external memory subsystem while separately storing the metadata component within a metadata cache implemented within the memory control device.
    Type: Application
    Filed: August 10, 2022
    Publication date: February 15, 2024
    Inventors: Enrique Musoll, Subbarao Arumilli, Anh T. Tran
  • Patent number: 11853115
    Abstract: A low-latency signaling link retimer generates an output signal transmission synchronously with respect to a core clock signal alternately selected from two or more plesiochronous or mesochronous clock sources with switchover between or among the core-clock sources executed without shrinking, extending or otherwise disrupting the edge-to-edge core clock period or clock duty cycle.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: December 26, 2023
    Assignee: Astera Labs, Inc.
    Inventors: Jitendra Mohan, Subbarao Arumilli, Charan Enugala, Chi Feng, Ken (Keqin) Han, Pulkit Khandelwal, Vikas Khandelwal, Casey Morrison, Enrique Musoll, Vivek Trivedi
  • Patent number: 11722152
    Abstract: A memory control component encodes over-capacity data into an error correction code generated for and stored in association with an application data block, inferentially recovering the over-capacity data during application data block read-back by comparing error syndromes generated in detection/correction operations for respective combinations of each possible value of the over-capacity data and the read-back application data block.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: August 8, 2023
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Anh T. Tran, Subbarao Arumilli, Chi Feng
  • Patent number: 11487317
    Abstract: A low-latency signaling link retimer generates an output signal transmission synchronously with respect to a core clock signal alternately selected from two or more plesiochronous or mesochronous clock sources with switchover between or among the core-clock sources executed without shrinking, extending or otherwise disrupting the edge-to-edge core clock period or clock duty cycle.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: November 1, 2022
    Assignee: Astera Labs, Inc.
    Inventors: Jitendra Mohan, Subbarao Arumilli, Charan Enugala, Chi Feng, Ken (Keqin) Han, Pulkit Khandelwal, Vikas Khandelwal, Casey Morrison, Enrique Musoll, Vivek Trivedi
  • Patent number: 11424905
    Abstract: First and second clock signals are generated based on signal transitions within first and second streams of symbols, respectively, received within an integrated circuit component, the first and second clock signals having a time-varying phase offset with respect to one another. A first control circuit, operating in a first timing domain established by the first clock signal, generates first control information based on the first stream of symbols and forwards the first control information, via a domain crossing circuit that bridges the time-varying phase offset, to a second control circuit operating in a second timing domain. The second control circuit generates a third stream of symbols based on the first control information and on the second stream of symbols, and a transmit circuit outputs the third stream of symbols from the integrated circuit component synchronously with respect to the second clock signal.
    Type: Grant
    Filed: April 10, 2021
    Date of Patent: August 23, 2022
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Casey Morrison, Ken (Keqin) Han, Pulkit Khandelwal, Subbarao Arumilli
  • Patent number: 11349626
    Abstract: A signaling link retimer injects flow-rate compensation transmissions into a synthesized symbol stream in coordination with flow-rate compensation transmissions detected within a received symbol stream, enabling the retimer to switch seamlessly between forwarding the received symbol stream and outputting the synthesized symbol stream.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: May 31, 2022
    Assignee: Astera Labs, Inc.
    Inventors: Enrique Musoll, Subbarao Arumilli, Ken (Keqin) Han, Pulkit Khandelwal, Casey Morrison
  • Patent number: 11327913
    Abstract: Groups of signal conductors within a configurable communication system are managed by respective, dedicated media controllers implement a configurable number of independent communication channels through coordinated action so that signal conductors need not be multiplexed to/from multiple controllers and no media controllers or input/output driver circuits therein need be disabled in any configuration.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: May 10, 2022
    Assignee: Astera Labs, Inc.
    Inventors: Casey Morrison, Charan Enugala, Chi Feng, Enrique Musoll, Jitendra Mohan, Ken (Keqin) Han, Pulkit Khandelwal, Subbarao Arumilli, Vikas Khandelwal, Vivek Trivedi
  • Patent number: 11258696
    Abstract: A signaling-link retimer concatenates discontiguous leading and trailing portions of a precoded and scrambled symbol stream, shunting the trailing portion of the stream ahead of unneeded stream content to dynamically reduce the number of symbols queued between retimer input and output and thus reduce retimer transit latency.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: February 22, 2022
    Assignee: Asiera Labs, Inc.
    Inventors: Casey Morrison, Enrique Musoll, Jitendra Mohan, Pulkit Khandelwal, Subbarao Arumilli, Vikas Khandelwal, Ken (Keqin) Han, Charan Enugala, Vivek Trivedi, Chi Feng
  • Patent number: 11150687
    Abstract: A low-latency signaling link retimer generates an output signal transmission synchronously with respect to a core clock signal alternately selected from two or more plesiochronous or mesochronous clock sources with switchover between or among the core-clock sources executed without shrinking, extending or otherwise disrupting the edge-to-edge core clock period or clock duty cycle.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 19, 2021
    Assignee: Astera Labs, Inc.
    Inventors: Jitendra Mohan, Subbarao Arumilli, Charan Enugala, Chi Feng, Ken (Keqin) Han, Pulkit Khandelwal, Vikas Khandelwal, Casey Morrison, Enrique Musoll, Vivek Trivedi
  • Patent number: 9705808
    Abstract: Systems and methods are provided that enable flow aware buffer management. The method includes storing in a queue of a buffer a first type of traffic, storing in the queue of the buffer a second type of traffic, wherein the first type of traffic is less sensitive to latency than the second type of traffic, and when an amount of the first type of traffic meets or exceeds a first threshold, effecting flow control of the first type of traffic to slow a flow of the first type of traffic into the buffer. Flow control can be effected using packet marking or discarding packets. The methodology has particular utility in connection with managing elephant and mouse flows in a network switch.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: July 11, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Subbarao Arumilli, Peter Newman
  • Patent number: 9337120
    Abstract: A Multi-Chip Module is presented herein that comprises a package substrate, at least two integrated circuit devices, each of which is electrically coupled to the package substrate, and an interposer. Formed in the interposer are electrical connections which are predominantly horizontal interconnects. The first interposer is arranged to electrically couple the two integrated circuit devices to each other. Methods for manufacturing a Multi-Chip Module are also presented herein.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: May 10, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Li Li, Subbarao Arumilli, Lin Shen
  • Publication number: 20150271081
    Abstract: Systems and methods are provided that enable flow aware buffer management. The method includes storing in a queue of a buffer a first type of traffic, storing in the queue of the buffer a second type of traffic, wherein the first type of traffic is less sensitive to latency than the second type of traffic, and when an amount of the first type of traffic meets or exceeds a first threshold, effecting flow control of the first type of traffic to slow a flow of the first type of traffic into the buffer. Flow control can be effected using packet marking or discarding packets. The methodology has particular utility in connection with managing elephant and mouse flows in a network switch.
    Type: Application
    Filed: March 21, 2014
    Publication date: September 24, 2015
    Applicant: Cisco Technology, Inc.
    Inventors: Subbarao Arumilli, Peter Newman
  • Patent number: 8972611
    Abstract: An input/output (IO) device for connecting multiple servers to one or more network interfaces. The device includes a network connection module comprising one or more network interfaces, and a virtual host interface configured to enable communication with a plurality of host servers. The device includes IO controller configured to connect each of the host servers to one or more of the network interfaces such that the connections between each host server and corresponding one or more network interfaces are operationally isolated and independent from one another.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Michael B. Galles, Subbarao Arumilli
  • Publication number: 20140048928
    Abstract: A Multi-Chip Module is presented herein that comprises a package substrate, at least two integrated circuit devices, each of which is electrically coupled to the package substrate, and an interposer. Formed in the interposer are electrical connections which are predominantly horizontal interconnects. The first interposer is arranged to electrically couple the two integrated circuit devices to each other. Methods for manufacturing a Multi-Chip Module are also presented herein.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Li Li, Subbarao Arumilli, Lin Shen