Patents by Inventor Klaus R. Riedel

Klaus R. Riedel 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).

  • Data processing system for performing a trace function and method therefor
    Patent number: 5964893
    Abstract: A data processor (3) executes a real time trace function which allows an external development system (7) to dynamically observe internal operations of data processor (3) without assuming a type or availability of an external bus and without significantly impacting the efficiency and speed of the data processor (3). A debug module (10) of data processor (3) provides a parallel output port for providing internal operating information via a DDATA signal and a PST signal. The DDATA signal provides data which reflects operand values and the PST signal provides encoded status information which reflects an execution status of a central processing unit 92). Furthermore, the DDATA signal also provides captured instruction address program flow changes to allow external development system (7) to trace an exact program flow without requiring an externally visible address bus or an externally visible data bus.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: October 12, 1999
    Assignee: Motorola, Inc.
    Inventors: Joseph C. Circello, Klaus R. Riedel