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. 31, 2006
Filed:
Apr. 27, 2004
Juergen Eckert, Neckarsulm, DE;
Thorsten Fahlbusch, Heilbronn, DE;
Burkhard Gehring, Heilbronn, DE;
Hans-werner Groh, Ensdorf, DE;
Horst Haefner, Heilbronn, DE;
Hermann Hammel, Rot am See, DE;
Michael Hecker, Eppingen, DE;
Gerald Krimmer, Heilbronn, DE;
Reinhard Reimann, Heilbronn, DE;
Wolfgang Roeper, Neuenstein, DE;
Friedemann Schmidt, Asberg, DE;
Juergen Schnabel, Leingarten, DE;
Wolfgang Schneider, Tamm, DE;
Michael Vogt, Bad Rappenau, DE;
Hans-peter Waible, Flein, DE;
Juergen Eckert, Neckarsulm, DE;
Thorsten Fahlbusch, Heilbronn, DE;
Burkhard Gehring, Heilbronn, DE;
Hans-Werner Groh, Ensdorf, DE;
Horst Haefner, Heilbronn, DE;
Hermann Hammel, Rot am See, DE;
Michael Hecker, Eppingen, DE;
Gerald Krimmer, Heilbronn, DE;
Reinhard Reimann, Heilbronn, DE;
Wolfgang Roeper, Neuenstein, DE;
Friedemann Schmidt, Asberg, DE;
Juergen Schnabel, Leingarten, DE;
Wolfgang Schneider, Tamm, DE;
Michael Vogt, Bad Rappenau, DE;
Hans-Peter Waible, Flein, DE;
Atmel Germany GmbH, Heilbronn, DE;
Abstract
A d.c. signal controlled oscillator includes a frequency-determining network having a control input and a modulation input. A phase regulating loop includes the oscillator and components that provide a control signal to the control input. A circuit apparatus for driving the oscillator includes a modulation generator that provides a modulation signal to the modulation input, and a circuit arrangement that autonomously generates a signal depending on and representing a slope of the modulation and provides this slope signal to the modulation generator, which generates the modulation signal dependent on the slope signal. A method of operating the oscillator involves switching a frequency divider successively to two different frequencies, respectively sampling and holding the two different arising control voltages, forming a difference between the two control voltages, and activating the modulation generator so that a modulation swing of the modulation signal is determined by this difference between the control voltages.