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:
Dec. 18, 2012
Filed:
Oct. 27, 2011
Kiran Kumar Gunnam, San Jose, CA (US);
Jay Scott Fuller, Scotts Valley, CA (US);
Kiran Kumar Gunnam, San Jose, CA (US);
Jay Scott Fuller, Scotts Valley, CA (US);
Certicom Corp., Mississauga, CA;
Abstract
An integrated circuit comprises logic circuitry driven by a clock and reference circuitry. In operation, logic elements of the reference circuitry are synchronized to the clock. In operation, a first sensing circuit outputs a voltage Vproportional to an instantaneous current consumption Iof the logic circuitry, and a second sensing circuit outputs a voltage Vproportional to an instantaneous fluctuating current consumption Iof the reference circuitry. In operation, differential circuitry outputs a voltage difference αV−Vbetween a scaled-up version αVof the voltage Vand the voltage V, the scaled-up version scaled to approximately the scale of the voltage V. In operation, a square root circuit receives the voltage difference as input and outputs a square root of the voltage difference. A current source is controllable by the output of the square root circuit to generate current through a dissipative load.