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:
Oct. 16, 2007
Filed:
Feb. 09, 2005
Pierangelo Confalonieri, Caponago, IT;
Marco Zamprogno, Cesano Maderno, IT;
Angelo Nagari, Cilavegna, IT;
Pierangelo Confalonieri, Caponago, IT;
Marco Zamprogno, Cesano Maderno, IT;
Angelo Nagari, Cilavegna, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
The circuit comprises a first ring oscillator comprising an odd number of inverting elements, a delay element and an output terminal; the delay element responds to a pulse at its input with a predetermined time delay with respect to a predetermined edge of the input pulse and substantially without time delay with respect to the other edge of the input pulse. With a view to avoiding start-up transients and generating pulses with a duty cycle that can be easily modified, the circuit comprises a second ring oscillator, having an output terminal connected to the output terminal of the first oscillator, and a bistable logic circuit having an output terminal connected to the common output of the first and the second oscillator. At least one of the inverting elements of the first oscillator and at least one of the inverting elements of the second oscillator form part of the bistable logic circuit.