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:
Jul. 21, 1987
Filed:
Sep. 24, 1985
Applicant:
Inventors:
Richard E DeFreitas, North Chelmsford, MA (US);
Daniel T Sullivan, Bolton, MA (US);
Assignee:
Analog and Digital Systems, Inc., Wilmington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
381 61 ; 84DI / ; 331 10 ; 328 63 ; 328 72 ; 328109 ; 307522 ; 307269 ; 307271 ;
Abstract
Generating clock signals of slightly different frequencies without the signals locking up in synchrony, by providing a voltage-to-frequency converter driven by the output of an integrator, which is supplied with a signal representative of the sum of a frequency-difference command and the difference in frequency between the two clocks.