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:
Nov. 11, 1980
Filed:
Apr. 30, 1979
Applicant:
Inventors:
Ronald H Chapman, Wheaton, IL (US);
Kenneth A Hansen, Bedford, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
331111 ; 332 / ;
Abstract
A wide frequency range current-controlled oscillator (CCO) provides a digital output signal that is frequency controllable by an input control current. The CCO includes a differential voltage comparator coupled to a timing capacitor for controlling charging and discharging currents applied to the timing capacitor. The charging and discharging currents are dependent on the input control current. The magnitude of the discharging current may be varied to control the duty cycle of the digital output signal.