Patents Assigned to KVASER AB
  • Patent number: 11804919
    Abstract: Two or more modules communicate over a common control network including receiving by a message packet having data defined by a signal level at defined bit quanta of a bit, the defined bit quanta being less than every bit quanta of a bit, and the communication device samples bit quanta other than the defined bit quanta. The module receives signal disturbances and decodes the signal disturbances as having a value different from an expected value of the certain bit. In another form, the module uses a first counter based on a clock local to the communication device and a second counter having a higher sampling rate than the first counter. Here, the module receives over the control network a synchronizing portion of a message and counts clock ticks of the second counter over a portion of the message to determine a clock rate for a module that transmitted the message.
    Type: Grant
    Filed: January 16, 2023
    Date of Patent: October 31, 2023
    Assignee: Kvaser AB
    Inventors: Lars-Berno Fredriksson, Kent Äke Lennart Lennartsson, Jonas Henning Olsson
  • Patent number: 11558136
    Abstract: Two or more modules communicate over a common control network including receiving by a message packet having data defined by a signal level at defined bit quanta of a bit, the defined bit quanta being less than every bit quanta of a bit, and the communication device samples bit quanta other than the defined bit quanta. The module receives signal disturbances and decodes the signal disturbances as having a value different from an expected value of the certain bit. In another form, the module uses a first counter based on a clock local to the communication device and a second counter having a higher sampling rate than the first counter. Here, the module receives over the control network a synchronizing portion of a message and counts clock ticks of the second counter over a portion of the message to determine a clock rate for a module that transmitted the message.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: January 17, 2023
    Assignee: Kvaser AB
    Inventors: Lars-Berno Fredriksson, Kent Äke Lennart Lennartsson, Jonas Henning Olsson
  • Patent number: 10924198
    Abstract: A control network communication arrangement includes a second protocol embedded into a first protocol in a way that modules supporting the second protocol may be aware of and utilize the first protocol whereas modules supporting only the first protocol may not be aware of the second protocol. Operation of modules using the second protocol does not disturb operation of the modules not configured to use or understand the second protocol. By one approach, the messages sent using the second protocol will be seen as messages sent using the first protocol but not having a message necessary to understand or as needing a particular response. In another approach, modules using the second protocol can be configured to send message during transmission of first protocol messages by other modules, the second protocol messages being triggered off of expected aspects of the message sent under the first protocol.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: February 16, 2021
    Assignee: KVASER AB
    Inventors: Lars-Berno Fredriksson, Kent Äke Lennart Lennartsson, Jonas Henning Olsson
  • Patent number: 9529358
    Abstract: The invention relates to a remote control system (195) comprising mobile units (190, 1102, 1105), and a by control means (106, 110) provided controller unit for these. Said units are equipped with a function performing means (161) and transferring means (207, 270) that generates information signals (301) respectively transmits the same. Signal processing means (261, 268) and their exerting function (314) for controlling the functions of the respective mobile unit are placed respectively takes place only in the current mobile device. In accordance with the proposed use in connection with the present invention object, a controller area network type of system is constructed with a distributed and integrated network structure (1751). Only signal processing means (1753) and their function exertion means (1754) for controlling of a mobile unit, which is positioned in the actual unit, is used for its control.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: December 27, 2016
    Assignee: KVASER AB
    Inventor: Lars-Berno Fredriksson