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. 25, 1989
Filed:
Jun. 01, 1988
Applicant:
Inventor:
Michele Raucci, Milan, IT;
Assignee:
Siemens Telecommunicazioni, S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H04L / ;
U.S. Cl.
CPC ...
375 20 ; 375120 ; 328155 ;
Abstract
A clock extractor circuit comprising a frequency divider which derives the clock signal from a signal having a frequency which is a multiple of the frequency of a received bipolar signal input. A correction logic circuit in the frequency divider compares the logic state of the frequency divider with a transition detection signal derived by sampling the bipolar signal at the multiple frequency and, on the basis of the phase error detected, commands a phase correction of the clock signal.