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. 25, 2008
Filed:
Jan. 02, 2008
Shingo Suzuki, San Jose, CA (US);
Shingo Suzuki, San Jose, CA (US);
Transmeta Corporation, Santa Clara, CA (US);
Abstract
An integrated circuit, in accordance with one embodiment of the present invention, includes a first device under test (DUT), a first ring oscillator, a second DUT and a second ring oscillator. The first DUT is biased such that interface traps are generated during a first mode. The generated interface traps result in a decrease in a first drive current of the first DUT. The second device under test is biased to maintain a reference drive current during the first mode. The operating frequency of the first ring oscillator, during a second mode, is a function of the first drive current. The operating frequency of the second ring oscillator, during the second mode, is a function of the reference drive current. The integrated circuit may also include a comparator for generating an output signal as a function of a difference between the operating frequency of the first and second ring oscillator.