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. 18, 2000
Filed:
Mar. 11, 1999
Didier Salle, Grenoble, FR;
STMicroelectronics S.A., Gentilly, FR;
Abstract
A current-controlled oscillator includes a capacitor, and at least one current source for providing at least one charge current for charging the capacitor. A discharge circuit sequentially discharges the capacitor with a discharge current. A control circuit maintains a mean charge voltage of the capacitor at a preset value by controlling the discharge current. The control circuit includes a current control source forming a current mirror with the at least one current source. The current control source is connected to the discharge circuit for setting the discharge current substantially equal to a sum of the charge currents. The oscillator further includes a correction circuit for correcting the discharge current corresponding to a mean charge of the capacitor.