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:
Jun. 18, 1996
Filed:
Oct. 12, 1994
Joannes M Sevenhans, Brasschaat, BE;
Hans A Naert, Boekenberglei, BE;
Alcatel N.V., Rijswijk, NL;
Abstract
A synchronizing circuit (SC) is proposed which recovers from input data (ID) applied thereto a data clock signal (DC) synchronous therewith in frequency and in phase. The circuit (SC) consists of a tuned tapped delay line (TDL) generating a plurality of mutually delayed local clock signals (DCS), a latching circuit (SM) sampling these delayed local clock signals at input data level transitions thereby providing sampled versions (LCSV) thereof as well as a comparator (C1) pairwise comparing said delayed local clock signals with respective ones of the sampled versions. It can be verified that with such a circuit the level transitions of the appropriate data clock signal (DC) are generated at the outputs of the comparator (C1) when the latter drives its output high only if a sufficient number of its pairwise comparisons hold.