Patents by Inventor Olof E. Grimlund

Olof E. Grimlund 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: 5896368
    Abstract: Introduction of discontinuous transmission in CDMA communications techniques is achieved by selectively using additional spreading codes for spreading a frame of data. By dividing a frame into two or more portions and spreading each portion with a different spreading code, the frame can be transmitted in a compressed mode wherein the information is transmitted during a portion of the frame period, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: April 20, 1999
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Erik Dahlman, Per Hans P. Willars, Olof E. Grimlund, Lars-Magnus Ewerbring
  • Patent number: 5883899
    Abstract: Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: March 16, 1999
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Erik Dahlman, Per Hans P. Willars, Olof E. Grimlund, Lars-Magnus Ewerbring
  • Patent number: 5533014
    Abstract: Introduction of discontinuous transmission in CDMA communications techniques is achieved by using a lower spreading ratio, whereby the spread information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies and execution of seamless handover between frequencies.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: July 2, 1996
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Per H. A. Willars, Olof E. Grimlund, Lars-Magnus Ewerbring