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:
Jun. 12, 2001
Filed:
Mar. 10, 2000
Jacek Kowalski, Trets, FR;
Inside Technologies, Saint Clement les Places, FR;
Abstract
The present invention relates to a random signal generator (,) comprising means (,) for converting an electronic noise (N, N,N,) into a logic signal (RS) whose value depends on the random fluctuations of the electronic noise (N). According to one embodiment, the generator (,) comprises at least two delay lines (,) having initially balanced time constants (T). The two delay lines (,) receive a pulsed reference signal (Hr) at input and at least one of the delay lines (,) receives an electronic noise (N,N,) causing its time constant (T) to fluctuate (&Dgr;t). The temporal lag between the two pulsed signals (S,S,) is detected by a circuit (,) delivering a logic signal (RS) whose value is a function of the relative lag between the two pulsed signals (S,S,). Advantageously, the electronic noise (N,N,) is a differential noise taken at two points (GND,GND,) of a ground plane or two points (PV,PV,) of an electrical supply plane.