Patents by Inventor Lars Johan Persson

Lars Johan Persson 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).

  • Publication number: 20190280783
    Abstract: In one example embodiment, a server obtains a labeled fingerprint of an ultrasound-capable client device. Based on the labeled fingerprint, the server determines that the ultrasound-capable client device is in physical proximity with a collaboration endpoint. The server subsequently obtains an unlabeled fingerprint of an ultrasound-incapable client device. Based on the unlabeled fingerprint and the labeled fingerprint, the server determines that the ultrasound-incapable client device is a meeting attendee device for a collaboration meeting to which the collaboration endpoint is connected. In response to determining that the ultrasound-incapable client device is the meeting attendee device for the collaboration meeting, the server connects the ultrasound-incapable client device to the collaboration endpoint.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 12, 2019
    Inventors: Lars Johan Persson, Dan Peder Eriksen
  • Patent number: 7386781
    Abstract: A method is presented comprising identifying a weak component in a wireless communication link, instructing a transmitter of the weak component to invoke repetition coding, and selectively combining signals received via multiple antennae on multiple channels to recover information contained in the transmitted signal.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: June 10, 2008
    Assignee: ArrayComm, LLC
    Inventors: Lars Johan Persson, Athanasios A. Kasapi
  • Patent number: 7020107
    Abstract: An embodiment of the invention provides a method for effecting switchback on a spatial division multiple access (SDMA) PHS channel. A communication signal is broadcast over each of one or more SDMA channels of a multi-access channel to one or more corresponding user terminals. A set of transmit spatial weights is determined for a synchronization burst to a user terminal attempting to reestablish communication over an SDMA channel of the multi-access channel. The set of transmit spatial weights is determined such that interference caused by one or more communication signals to the synchronization burst is reduced.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: March 28, 2006
    Assignee: Arraycomm, LLC
    Inventors: Athanasios A. Kasapi, Adam B. Kerr, Xiaoming Yu, Lars Johan Persson
  • Patent number: 6894993
    Abstract: Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: May 17, 2005
    Assignee: ArrayComm, Inc.
    Inventors: Xiaoming Yu, Athanasios A. Kasapi, Lars Johan Persson, Xiangzhong Zeng
  • Publication number: 20040141478
    Abstract: An embodiment of the invention provides a method for effecting switchback on a spatial division multiple access (SDMA) PHS channel. A communication signal is broadcast over each of one or more SDMA channels of a multi-access channel to one or more corresponding user terminals. A set of transmit spatial weights is determined for a synchronization burst to a user terminal attempting to reestablish communication over an SDMA channel of the multi-access channel. The set of transmit spatial weights is determined such that interference caused by one or more communication signals to the synchronization burst is reduced.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 22, 2004
    Inventors: Athanasios A. Kasapi, Adam B. Kerr, Xiaoming Yu, Lars Johan Persson
  • Publication number: 20040125767
    Abstract: Embodiments of the invention provide various methods for detecting a spatial division multiple access (SDMA) channel swap. A first SDMA communication channel is assigned to a first user terminal that initially transmits its signal over the first SDMA communication channel. A second SDMA communication channel is assigned to a second user terminal that initially transmits its signal over the second SDMA communication channel. The first user terminal's signal and the second user terminal's signal are analyzed to determine that the first user terminal is transmitting its signal over the second SDMA communication channel and the second user terminal is transmitting its signal over the first SDMA communication channel.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Inventors: Xiaoming Yu, Athanasios A. Kasapi, Lars Johan Persson, Xiangzhong Zeng
  • Publication number: 20020166097
    Abstract: A method is presented comprising identifying a weak component in a wireless communication link, instructing a transmitter of the weak component to invoke repetition coding, and selectively combining signals received via multiple antennae on multiple channels to recover information contained in the transmitted signal.
    Type: Application
    Filed: March 26, 2001
    Publication date: November 7, 2002
    Inventors: Lars Johan Persson, Athanasios A. Kasapi