Patents by Inventor Karthik Krishnaswami

Karthik Krishnaswami 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).

  • Wireless HD MAC frame format
    Patent number: 9065682
    Abstract: A media access controller (MAC) generates a composite packet having an optimized format for carrying audio, video, and data traffic. A header portion of the composite packet is encoded separately from a data portion of the composite packet. A physical device interface (PHY) is coupled to the MAC. The PHY encodes and decodes between a digital signal and a modulated analog signal. The PHY comprises a high rate physical layer circuit (HRP) and a low rate physical layer circuit (LRP). A radio frequency (RF) transmitter is coupled to the PHY to transmit data.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 23, 2015
    Assignee: Silicon Image, Inc.
    Inventors: Kumar Mahesh, Karthik Krishnaswami, Karen Wang, Jeffrey M. Gilbert, Chuen-Shen Shung
  • Wireless proximity estimation
    Patent number: 7948961
    Abstract: A wireless content protection system includes a coordinator, a source device, and a sink device. The coordinator includes a scheduler. The source and sink devices each have a content protection manager. One of the content protection manager allocates and releases bandwidth via the coordinator for a test message and a response message for a round-trip time computation. The test message is transmitted in a source-to-sink channel time block. The response message is transmitted in a sink-to-source channel time block. The round-trip time is the period between the end of the source-to-sink channel time block and the beginning of the sink-to-source channel time block.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: May 24, 2011
    Assignee: Sibeam, Inc.
    Inventors: Kumar Mahesh, Karthik Krishnaswami, Karen Wang, Jeffrey M. Gilbert, Chuen-Shen (Bernard) Shung, Chih-Yuan Hsieh, Kyeong Ryu, Prakash Kamath
  • Wireless proximity estimation
    Publication number: 20080212559
    Abstract: A wireless content protection system includes a coordinator, a source device, and a sink device. The coordinator includes a scheduler. The source and sink devices each have a content protection manager. One of the content protection manager allocates and releases bandwidth via the coordinator for a test message and a response message for a round-trip time computation. The test message is transmitted in a source-to-sink channel time block. The response message is transmitted in a sink-to-source channel time block. The round-trip time is the period between the end of the source-to-sink channel time block and the beginning of the sink-to-source channel time block.
    Type: Application
    Filed: January 25, 2008
    Publication date: September 4, 2008
    Inventors: Kumar Mahesh, Karthik Krishnaswami, Karen Wang, Jeffrey M. Gilbert, Chuen-Shen Bernard Shung, Chih-Yuan Hsieh, Kyeong Ryu, Prakash Kamath
  • Wireless HD MAC frame format
    Publication number: 20080192726
    Abstract: A media access controller (MAC) generates a composite packet having an optimized format for carrying audio, video, and data traffic. A header portion of the composite packet is encoded separately from a data portion of the composite packet. A physical device interface (PHY) is coupled to the MAC. The PHY encodes and decodes between a digital signal and a modulated analog signal. The PHY comprises a high rate physical layer circuit (HRP) and a low rate physical layer circuit (LRP). A radio frequency (RF) transmitter is coupled to the PHY to transmit data.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 14, 2008
    Inventors: Kumar Mahesh, Karthik Krishnaswami, Karen Wang, Jeffrey M. Gilbert, Chuen-Shen Shung