Patents by Inventor Krishnan Vishwanathan

Krishnan Vishwanathan 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: 8493977
    Abstract: A method and controller for detecting an unauthorized access point in a wireless communication network includes a first step of generating (200) a probe identity that is unused in the wireless communication network. A next step includes informing (202) adopted access points in the communication network of this generated probe identity, and that packets from this generated probe identity should be ignored. A next step includes broadcasting (204) at least one probe request using the generated probe identity. A next step includes detecting (206) if there are any probe responses to the at least one probe request, indicating an unauthorized access point. A next step includes providing an alert (214, 216, 218) if an unauthorized access point is detected.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: July 23, 2013
    Assignee: Symbol Technologies, Inc.
    Inventors: Ramprasad Vempati, Pasupula Sridhar, Ananda Krishnan Vishwanathan
  • Patent number: 8358987
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data, an intermediate frame buffer that receives the de-mapped physical channel data, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data. The back end processor may include a third stage, including a scaling circuit to scale the encoded transport channel data, a decoder to decode the scaled transport channel data, a CRC checker and an output buffer.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: January 22, 2013
    Assignee: MediaTek Inc.
    Inventors: Deepak Mathew, Aiguo Yan, Krishnan Vishwanathan, Eric Aardoom, Timothy Fisher-Jeffes
  • Patent number: 8358988
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data, an intermediate frame buffer that receives the de-mapped physical channel data, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data. The back end processor may include a third stage, including a scaling circuit to scale the encoded transport channel data, a decoder to decode the scaled transport channel data, a CRC checker and an output buffer.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: January 22, 2013
    Assignee: MediaTek Inc.
    Inventors: Lidwine Martinot, Deepak Mathew, Krishnan Vishwanathan, Eric Aardoom, Aiguo Yan, Timothy Fisher-Jeffes
  • Publication number: 20120134272
    Abstract: A method and controller for detecting an unauthorized access point in a wireless communication network includes a first step of generating (200) a probe identity that is unused in the wireless communication network. A next step includes informing (202) adopted access points in the communication network of this generated probe identity, and that packets from this generated probe identity should be ignored. A next step includes broadcasting (204) at least one probe request using the generated probe identity. A next step includes detecting (206) if there are any probe responses to the at least one probe request, indicating an unauthorized access point. A next step includes providing an alert (214, 216, 218) if an unauthorized access point is detected.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Ramprasad Vempati, Pasupula Sridhar, Ananda Krishnan Vishwanathan
  • Publication number: 20080080443
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data from the frame buffer, an intermediate frame buffer that receives the de-mapped physical channel data from the first stage, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 3, 2008
    Applicant: Analog Devices, Inc.
    Inventors: Lidwine Martinot, Deepak Mathew, Krishnan Vishwanathan, Eric Aardoom, Aiguo Yan, Timothy Fisher-Jeffes
  • Publication number: 20080080444
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data from the frame buffer, an intermediate frame buffer that receives the de-mapped physical channel data from the first stage, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 3, 2008
    Applicant: Analog Devices, Inc.
    Inventors: Timothy Fisher-Jeffes, Deepak Mathew, Krishnan Vishwanathan, Eric Aardoom, Aiguo Yan
  • Publication number: 20080080542
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data from the frame buffer, an intermediate frame buffer that receives the de-mapped physical channel data from the first stage, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 3, 2008
    Applicant: Analog Devices, Inc.
    Inventors: Krishnan Vishwanathan, Deepak Mathew, Eric Aardoom, Lidwine Martinot, Aiguo Yan, Timothy Fisher-Jeffes, Paul D. Krivacek
  • Publication number: 20080081575
    Abstract: A bit rate processor in a wireless system includes a front end processor to process physical channel data and to generate encoded transport channel data, a transport channel buffer to hold the encoded transport channel data, and a back end processor to process the encoded transport channel data from the transport channel buffer and to generate decoded transport channel bits. The front end process may include a frame buffer that receives the physical channel data, a first stage to de-map the physical channel data from the frame buffer, an intermediate frame buffer that receives the de-mapped physical channel data from the first stage, and a second stage to process the de-mapped physical channel data and to provide the encoded transport channel data.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 3, 2008
    Applicant: Analog Devices, Inc.
    Inventors: Deepak Mathew, Aiguo Yan, Krishnan Vishwanathan, Eric Aardoom, Timothy Fisher-Jeffes