Patents by Inventor Chester S. Zaluk

Chester S. Zaluk 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: 4485440
    Abstract: Data relative to code instruction use of a central processor unit (CPU) is collected by accumulating counts of code instructions to be executed upon termination of a clock interrupt process over a predetermined interval. Information stored on occurrence of a clock interrupt pulse is evaluated to determine if the code instruction is one under evaluation. If the code instruction is one under evaluation, a count in an associated memory location is incremented. Upon termination of the predetermined interval, the data is read out in histogram form. The data in the histogram is relative to the virtual addresses of the code instructions and, therefore, directly useable by a programmer to evaluate the code use of the CPU without the need for costly and time consuming data unmapping.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: November 27, 1984
    Assignee: AT&T Bell Laboratories
    Inventors: Thomas G. Duff, Chester S. Zaluk