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:
Jan. 05, 2016
Filed:
Apr. 24, 2014
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Calogero Marco Ippolito, Aci Castello, IT;
Mario Chiricosta, Tremestieri Etneo, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
A calibration circuit for a DCO includes a signal-conditioning module configured for (i) receiving at input an oscillating signal generated by the DCO and a reference signal, both designed to oscillate between a high logic value ('1') and a low logic value ('0'), and (ii) detecting a respective first and second stable logic value of the reference signal and of the oscillating signal; and a period-to-voltage converter module coupled to the signal-conditioning module and configured for (iii) generating a difference signal identifying a difference between the period of the reference signal and the period of the oscillating signal, and (iv) controlling, on the basis of the difference signal, the DCO so as to conform the duration of the period of the oscillating signal to the duration of the period of the reference signal. Likewise described is a calibration method implemented by the calibration circuit.