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, 2012
Filed:
Jun. 30, 2010
Gregor Schatzberger, Graz, AT;
Gregor Schatzberger, Graz, AT;
austriamicrosystems AG, Unterpremstätten, AT;
Abstract
An oscillator circuit comprises a charging block with a first terminal for feeding a first charging current, to which terminal a first capacitor and a series circuit of a first and a second switch are connected, and with a second terminal for feeding a second charging current, to which terminal a second capacitor and a series circuit of a third and a fourth switch are connected, as well as a comparison circuit with a first and a second comparator. The comparators are configured to compare voltages at the first and second terminals to a reference voltage, wherein their output is connected to control terminals of the third or first switch. The oscillator circuit further comprises a flipflop that is coupled on the input side to the outputs of the first and second comparators, and on the output side, to control terminals of the second and fourth switches, as well as to an oscillator output.