The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 17, 1991

Filed:

Dec. 29, 1989
Applicant:
Inventor:

Timothy L Paterson, Renton, WA (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 19 ; 364200 ; 36426791 ;
Abstract

A test coverage analyzer (computer program) for monitoring the execution of a target program to determine which target program instructions have been executed. The analyzer first executes a portion of the target program in step mode, in which target program instruction are executed one at a time. In step mode, the analyzer maintains data indicating which target program instructions have been executed. When a branch is encountered, the analyzer inserts breakpoints in the target program at the first instructions of the branches that are not taken. When the analyzer determines that the target program instruction being executed has already been executed, it switches to run mode, so that the target program begins executing at its normal running speed. This continues until one of the inserted breakpoints is encountered, at which point the analyzer removes the breakpoint and switches back to step mode.


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