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.:
Date of Patent:
Oct. 15, 2002
Filed:
Sep. 28, 1999
Applicant:
Inventor:
Fumiaki Yamashita, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/44 ;
U.S. Cl.
CPC ...
G06F 9/44 ;
Abstract
A debugging system has a central processing unit, a register group, a tracer and a trace buffer integrated on a single semiconductor chip, a main memory for storing a target program and other data and an emulator, and the tracer is connected to a cache memory of the central processing unit and the register group through built-in signal lines patterned over the semiconductor chip so that the tracer is responsive to a high-speed data processing of the central processing unit by virtue of the built-in signal lines merely coupled with small parasitic capacitors.