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:
Sep. 09, 1980
Filed:
Nov. 02, 1978
Applicant:
Inventors:
Robert K Moulton, North Wales, PA (US);
John W Thompson, Willow Grove, PA (US);
Assignee:
Sperry Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
328 72 ; 307208 ; 307269 ; 375110 ; 375120 ;
Abstract
A preconditioning circuit is inserted in series between a coded stream of data pulses and a standard commercially available phase lock loop of the type having a nonharmonic phase detector. The novel preconditioning circuit converts the input coded stream of data pulses which do not have a transition during each cell time into a stream of pulses having a transition during each data cell time to enable the nonharmonic phase lock loop to synchronize with the data cell time and to produce clock pulses synchronized with the data cell time.