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:
Aug. 16, 2011
Filed:
Dec. 30, 2008
Sandeep Bhatia, San Jose, CA (US);
Patrick Gallagher, Apalachin, NY (US);
Brian Foutz, Silver Spring, MD (US);
Vivek Chickermane, Ithaca, NY (US);
Sandeep Bhatia, San Jose, CA (US);
Patrick Gallagher, Apalachin, NY (US);
Brian Foutz, Silver Spring, MD (US);
Vivek Chickermane, Ithaca, NY (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
In a circuit adapted for scan testing, a first set of connections configures the circuit elements into power domains with separate power-level controls, and a second set of connections configures the circuit elements to form scan segments for loading values into circuit elements from input ends of the scan segments and unloading values from circuit elements at output ends of the scan segments. A decompressor circuit receives a decompressor input and is operatively connected to the scan-segment input ends, and a compressor circuit is operatively connected to the scan segment output ends and generates a compressor output. Isolation circuits at scan-segment exits set values for scan segments at scan-segment exits when a corresponding independent power domain is in a power-off state.