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.

Patent No.:

US 7533251 B1

PDF
Full Text
Expired
Date of Patent:
May. 12, 2009

Filed:

Dec. 22, 2004
Applicants:

Atsushi Ubukata, Yawata, JP;

Akira Ueda, Katano, JP;

Shigeyoshi Oda, Sakai, JP;

Inventors:

Atsushi Ubukata, Yawata, JP;

Akira Ueda, Katano, JP;

Shigeyoshi Oda, Sakai, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

When a call instruction or interrupt branch is executed by a CPU, its return address is pushed to a stack memory. When a return instruction is executed, the pushed return address is popped from the stack memory. When a return instruction is executed by the CPU, a comparator compares the branch address output from the CPU and the address output from the stack memory. As a result of the comparison, if the addresses match, the branch address is not output as trace information. If the addresses do not match, the address register receives the branch address from the CPU and outputs the received branch address as the trace information.


Find Patent Forward Citations

Ubukata, Atsushi. (2009). Semiconductor integrated circuit, development support system and execution history tracing method (U.S. Patent No. 7533251). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7533251

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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