Patents by Inventor Dharmendra Kumar Sachdev

Dharmendra Kumar Sachdev 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).

  • Information delivery system and method
    Patent number: 6574338
    Abstract: A satellite-based digital broadcast system is used to provide real-time news, entertainment and informational programs to aircraft passengers in flight. Transmissions from the satellite occur on a time division multiplex (TDM) downlink with different broadcast programs being transmitted on different TDM channels. A broadcast receiver is carried on board the aircraft, and includes a demultiplexer for demultiplexing the TDM channels to reproduce the original broadcast programs. The broadcast receiver may be adapted to receive and reproduce both audio and video broadcasts, as well as to provide other types of information delivery services. Encryption of the broadcast programs may be used to restrict their use to a specific aircraft or airline company.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: June 3, 2003
    Assignee: WorldSpace, Inc.
    Inventor: Dharmendra Kumar Sachdev
  • Real-time information delivery system for aircraft
    Patent number: 5966442
    Abstract: A satellite-based digital broadcast system is used to provide real-time news, entertainment and informational programs to aircraft passengers in flight. Transmissions from the satellite occur on a time division multiplex (TDM) downlink with different broadcast programs being transmitted on different TDM channels. A broadcast receiver is carried on board the aircraft, and includes a demultiplexer for demultiplexing the TDM channels to reproduce the original broadcast programs. The broadcast receiver may be adapted to receive and reproduce both audio and video broadcasts, as well as to provide other types of information delivery services. Encryption of the broadcast programs may be used to restrict their use to a specific aircraft or airline company.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: October 12, 1999
    Assignee: WorldSpace, Inc.
    Inventor: Dharmendra Kumar Sachdev