Patents by Inventor B. Acharya

B. Acharya 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: 10938600
    Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: March 2, 2021
    Assignee: Cisco Technology, Inc.
    Inventors: David S. Kloper, Brian D. Hart, Dipankar B. Acharya
  • Publication number: 20190173691
    Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
    Type: Application
    Filed: January 30, 2019
    Publication date: June 6, 2019
    Inventors: David S. KLOPER, Brian D. HART, Dipankar B. ACHARYA
  • Patent number: 10218539
    Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 26, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: David S. Kloper, Brian D. Hart, Dipankar B. Acharya
  • Publication number: 20190036737
    Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
    Type: Application
    Filed: July 26, 2017
    Publication date: January 31, 2019
    Inventors: David S. KLOPER, Brian D. HART, Dipankar B. ACHARYA
  • Patent number: 10088857
    Abstract: A highly granular voltage regulator is disclosed. The voltage regulator circuit includes first and second current mirror circuits coupled to first and second control circuits, respectively. The voltage regulator circuit further includes an amplifier having an inverting input and a non-inverting input. The first current mirror circuit is coupled to the non-inverting input, whereas the second current mirror circuit is coupled to the inverting input. The first control circuit is operable to control a current provided by the first current mirror circuit, while the second control circuit is operable to control a current provided by the second current mirror circuit.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 2, 2018
    Assignee: Apple Inc.
    Inventors: Weibiao Zhang, Daniel J. Fritchman, Jafar Savoj, Venkatesh B Acharya
  • Patent number: 9665522
    Abstract: An embodiment integrates non-PCI compliant devices with PCI compliant operating systems. A fabric system mimics the behavior of PCI. When non-PCI compliant devices do not know how to respond to PCI enumeration, embodiments provide a PCI enumeration reply and thus emulate a reply that would typically come from a PCI compliant device during emulation. Embodiments allow system designers to incorporate non-standard fabric structures with the benefit of still using robust and mature PCI infrastructure found in modern PCI compliant operating systems. More generally, embodiments allow an operating system compliant with a first standard (but not a second standard) to discover and communicate with a device that is non-compliant with the first standard (but possibly is compliant with the second standard). Other embodiments are described herein.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: May 30, 2017
    Assignee: Intel Corporation
    Inventors: Bruce L. Fleming, Achmed R. Zahir, Arvind Mandhani, Satish B. Acharya
  • Patent number: 9164938
    Abstract: Methods and apparatus for integrating ARM-based IPs in computer system employing PCI-based fabrics. An PCI-based fabric is operatively coupled to an ARM-based ecosystem employing an ARM-based fabric such as OCP, AHB, or BVCI via a corresponding fabric-to-fabric bridge. Transactions between IP operatively coupled to the PCI-based fabric and IP in the ARM-based ecosystem are facilitated by applying applicable ordering and conversions operations via the fabric-to-fabric bridge and/or fabrics. For example, posted writes originating from IP coupled to the PCI-based fabric are converted to non-posted writes and serialized via the fabric-to-fabric bridge and forwarded to the ARM-based ecosystem.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: October 20, 2015
    Assignee: Intel Corporation
    Inventors: Satish B. Acharya, Achmed R. Zahir, Sean G. Galloway
  • Publication number: 20150134873
    Abstract: An embodiment integrates non-PCI compliant devices with PCI compliant operating systems. A fabric system mimics the behavior of PCI. When non-PCI compliant devices do not know how to respond to PCI enumeration, embodiments provide a PCI enumeration reply and thus emulate a reply that would typically come from a PCI compliant device during emulation. Embodiments allow system designers to incorporate non-standard fabric structures with the benefit of still using robust and mature PCI infrastructure found in modern PCI compliant operating systems. More generally, embodiments allow an operating system compliant with a first standard (but not a second standard) to discover and communicate with a device that is non-compliant with the first standard (but possibly is compliant with the second standard). Other embodiments are described herein.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 14, 2015
    Inventors: Bruce L. Fleming, Achmed R. Zahir, Arvind Mandhani, Satish B. Acharya
  • Patent number: 8943257
    Abstract: An embodiment integrates non-PCI compliant devices with PCI compliant operating systems. A fabric system mimics the behavior of PCI. When non-PCI compliant devices do not know how to respond to PCI enumeration, embodiments provide a PCI enumeration reply and thus emulate a reply that would typically come from a PCI compliant device during emulation. Embodiments allow system designers to incorporate non-standard fabric structures with the benefit of still using robust and mature PCI infrastructure found in modem PCI compliant operating systems. More generally, embodiments allow an operating system compliant with a first standard (but not a second standard) to discover and communicate with a device that is non-compliant with the first standard (but possibly is compliant with the second standard). Other embodiments are described herein.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: January 27, 2015
    Assignee: Intel Corporation
    Inventors: Bruce L. Fleming, Achmed R. Zahir, Arvind Mandhani, Satish B. Acharya
  • Publication number: 20140189187
    Abstract: Methods and apparatus for integrating ARM-based IPs in computer system employing PCI-based fabrics. An PCI-based fabric is operatively coupled to an ARM-based ecosystem employing an ARM-based fabric such as OCP, AHB, or BVCI via a corresponding fabric-to-fabric bridge. Transactions between IP operatively coupled to the PCI-based fabric and IP in the ARM-based ecosystem are facilitated by applying applicable ordering and conversions operations via the fabric-to-fabric bridge and/or fabrics. For example, posted writes originating from IP coupled to the PCI-based fabric are converted to non-posted writes and serialized via the fabric-to-fabric bridge and forwarded to the ARM-based ecosystem.
    Type: Application
    Filed: January 2, 2013
    Publication date: July 3, 2014
    Inventors: Satish B. Acharya, Achmed R. Zahir, Sean G. Galloway
  • Publication number: 20130086287
    Abstract: An embodiment integrates non-PCI compliant devices with PCI compliant operating systems. A fabric system mimics the behavior of PCI. When non-PCI compliant devices do not know how to respond to PCI enumeration, embodiments provide a PCI enumeration reply and thus emulate a reply that would typically come from a PCI compliant device during emulation. Embodiments allow system designers to incorporate non-standard fabric structures with the benefit of still using robust and mature PCI infrastructure found in modem PCI compliant operating systems. More generally, embodiments allow an operating system compliant with a first standard (but not a second standard) to discover and communicate with a device that is non-compliant with the first standard (but possibly is compliant with the second standard). Other embodiments are described herein.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Inventors: Bruce L. Fleming, Achmed R. Zahir, Arvind Mandhani, Satish B. Acharya
  • Publication number: 20120166172
    Abstract: In some embodiments if a transaction is directed at existing hardware, then the transaction is directed to existing hardware. If the transaction is not directed at existing hardware, then the transaction is sent through a behavioral model. Other embodiments are described and claimed.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Inventors: Bruce L. Fleming, Arvin Mandhani, Achmed A. Zahir, Satish B. Acharya
  • Publication number: 20050069733
    Abstract: A magnetic recording medium includes a substrate, a magnetic recording layer made of a Co alloy or a CoCr alloy, a seed layer disposed between the substrate and the magnetic recording layer, and an underlayer made of a binary alloy material having a B2 structure and disposed between the seed layer and the magnetic recording layer. The seed layer is made of a material comprising essentially of one of elements forming the binary alloy material of the underlayer.
    Type: Application
    Filed: September 8, 2004
    Publication date: March 31, 2005
    Inventors: Antony Ajan, Akihiro Inomata, E. Abarra, B. Acharya
  • Publication number: 20050048327
    Abstract: A magnetic recording medium is constructed to include a lower magnetic layer, a nonmagnetic spacer layer disposed on the lower magnetic layer, and an upper magnetic layer disposed on the nonmagnetic spacer layer, where the upper and lower magnetic layers are antiferromagnetically coupled. The lower magnetic layer comprises a stabilization layer and a lower enhancement layer disposed between the stabilization layer and the nonmagnetic spacer layer, and the stabilization layer and the lower enhancement layer are ferromagnetically exchange coupled. The stabilization layer and the lower enhancement layer are made of CoCr alloys such that a Pt content of the stabilization layer is higher than that of the lower enhancement layer.
    Type: Application
    Filed: September 8, 2004
    Publication date: March 3, 2005
    Inventors: B. Acharya, Akihiro Inomata