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. 25, 1990
Filed:
Feb. 13, 1989
Applicant:
Inventors:
Satoru Aikawa, Kanagawa, JP;
Yoichi Saito, Kanagawa, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 471 ; 375118 ;
Abstract
A word synchronization system which receives signals with error corrections codes to calculate a syndrome indicative of a synchronization of an intial phase. The initial phase is changed when the calculated syndrome is not zero, and the syndrome is recalculated. This operation is repeated until the particular syndrome becomes zero for the sequence of M times (or the number of testing stages). A synchronization slip detecting circuit judges a slip out of synchronization without the necessity to wait for the repetition of the state for M times, to thereby enable prompt phase resetting or synchronization establishment.