Patents by Inventor Mathius Muth

Mathius Muth 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).

  • Semaphore coding method to ensure data integrity in a can microcontroller and a can microcontroller that implements this method
    Patent number: 6631431
    Abstract: A method for use in a CAN device (e.g., a CAN microcontroller) that includes a processor core and hardware external to the processor core (e.g., a DMA engine) that writes message data into a designated message buffer for ensuring integrity of the message data stored in the designated message buffer. The method includes providing a three-state semaphore to indicate a current access status of the designated message buffer, the three-state semaphore having a first state indicative of the hardware external to the processor core starting to write new message data into the designated message buffer, a second state indicative of the hardware external to the processor core having finished writing the new message data into the designated message buffer, and, a third state indicative of the processor core starting to read message data from the designated message buffer. The processor core determines whether the designated message buffer is ready to be accessed based on the current state of the semaphore.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: October 7, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: William J. Silvkoff, Neil E. Birns, Peter Hank, Mathius Muth