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:
Nov. 15, 2011
Filed:
Jul. 30, 2008
Jun Sakiyama, Musashino, JP;
Naoki Kato, Kodaira, JP;
Jun Sakiyama, Musashino, JP;
Naoki Kato, Kodaira, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
This invention is to provide a technology for taking out trace information externally without lacking under the condition of limited output bandwidth. A semiconductor integrated circuit provided includes: a processing unit which can perform arithmetic processing according to a predetermined program and can output trace information with respect to the arithmetic processing; and a trace compression unit which can compress the trace information outputted from the processing unit. The trace compression unit includes a storage device, a comparator unit which can compare trace information stored in the storage device and the trace information newly outputted from the processing unit, and a trace information compression controller which can compress trace information to be externally outputted, based on the comparison result of the comparator unit. When a content of the trace information is in agreement with that of the trace information already outputted, information indicating the already-outputted trace information is outputted, accordingly the trace information is compressed.