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. 30, 2007
Filed:
May. 26, 2005
Pasi Salmi, Kemi, FI;
Juha Pennanen, Oulu, FI;
Pasi Salmi, Kemi, FI;
Juha Pennanen, Oulu, FI;
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A system and method is disclosed for providing an improved voltage monitor that is capable of determining that a value of an adjustable supply voltage is suitable for a requested performance level in an adaptive voltage scaling system. An integrator circuit of the voltage monitor integrates a slack time error signal from a hardware performance monitor. Control circuitry evaluates a suitability of the integrated slack time error signal for the requested performance level for a number of voltage evaluation time periods. The adjustable supply voltage is deemed to be stable when the integrated slack time error signal is within a predetermined range of limits for at least two voltage evaluation time periods.