Patents by Inventor Tarmo Anttalainen

Tarmo Anttalainen 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).

  • Cross-connection architecture for SDH signals comprising time-and-space division switch groups
    Patent number: 6693902
    Abstract: A Synchronous Digital Hierarchy (SDH) signal cross connect architecture is realized by switching the signals as bits in the space switch. The bit signals between the space switch and the time switches are multiplexed. In this way it is possible to linearly expand the capacity of the space switch to a much larger size before its quadratic expansion begins. This invention is applicable for the cross-connection of SDH signals such as Synchronous Transport Module (STM)-1 through STM-16.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: February 17, 2004
    Assignee: Marconi UK Intellectual Property Ltd.
    Inventors: Kari Sahlman, Tarmo Anttalainen, Pentti Lindholm