Patents by Inventor Jacobus M. Bakker

Jacobus M. Bakker 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: 6185522
    Abstract: A method for emulating a non-bond-out version of a microcontroller that has a standard port, a microcontroller allowing such emulating, and a system for executing the emulation. For emulating a non-bond-out version of a microcontroller, a standard port is used to multiplex among user data and program store addresses. An external register is connected to the port for latching therein program store addresses. The microcontroller is synchronized according to a machine cycle that has a plurality of states, each of which comprises at least two clock pulses. The standard port is used for outputting mutually exclusive parts of a program store address in contiguous sections of a machine state of external parallel evaluation.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: February 6, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Jacobus M. Bakker
  • Patent number: 5590354
    Abstract: A microprocessor includes a processor element, a memory interface element, an IO interface element, a debug support element and an internal bus interconnecting all above elements. For easy debugging, it also includes attached to the internal bus a registered boundary scan standard (JTAG) interface that accesses one or more scan chains inside the microprocessor, and is arranged for controlling DMA-type exchanges via the internal bus with other elements connected to this bus.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: December 31, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Peter Klapproth, Frederik Zandveld, Jacobus M. Bakker, Gerardus C. Van Loo
  • Patent number: 5574852
    Abstract: For use by an emulation circuit, a non-special-custom microcontroller multiplexes a port among user data and program store addresses. It has a multistate machine cycle with plural clock pulses per state. Various additionally provided emulation pins allow for outputting to an emulation circuit any or all of the following signals:a start-of-cycle pulse indicating non-sleep modea state-wise recurrent signal signalling progress of said states during non-sleep modea signal discriminating between idle and reseta multiplexed signalization among any or all of the following:that a next-following machine cycle is the first of a next instruction;that presently an interrupt is being processed;that an external program memory access is forthcoming;that an external data memory access occurs;that an external data memory write access occurs.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: November 12, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Jacobus M. Bakker, Dieter Hagedorn
  • Patent number: 5062034
    Abstract: The device includes a parent microcontroller in a bond-out version and a derivative microcontroller in a non-bond-out version, in order to emulate the derivative microcontroller. To this end, the parent microcontroller is connected to an external program memory by means of memory connection pins. The derivative microcontroller comprises an additional functional processing facility, an internal program memory and a processor element. Upon emulation the derivative microcontroller receives an emulation control signal. Communication means between the processor and the internal program memory on the one side and the additional functional process facility on the other side are thus deactivated. Finally, the two microcontrollers are interconnected and connected to an external program memory in such a manner that a series of standard pins and the processor of the parent microcontroller are activated, and the external processing section of the derivative microcontroller and said external program memory are activated.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: October 29, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Jacobus M. Bakker