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:
Jul. 23, 2013
Filed:
Feb. 22, 2011
Jean Gorisse, Grenoble, FR;
Andreia Cathelin, Laval, FR;
Andreas Kaiser, Villeneuve d'Ascq, FR;
Eric Kerherve, Talence, FR;
Jean Gorisse, Grenoble, FR;
Andreia Cathelin, Laval, FR;
Andreas Kaiser, Villeneuve d'Ascq, FR;
Eric Kerherve, Talence, FR;
STMicroelectronics SA, Montrouge, FR;
Centre National de la Recherche Scientifique (CNRS), Paris, FR;
Abstract
A logarithmic analog to digital conversion method for an analog input signal includes a logarithmic amplification with progressive compression of the input signal delivering a sequence of several secondary analog signals. The trend of the values of at least some of the secondary signals is a function of the values of the analog input signal including regions corresponding to a linear trend of the secondary signals as a function of that of the input signal expressed in a logarithmic scale. The method also includes a comparison of at least some of the secondary signals of the sequence with a common reference signal whose value lies within each of regions, supplying a thermometric code information item, and a generation of a first digital word from the thermometric code information item.