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. 15, 1997
Filed:
Dec. 03, 1993
Applicant:
Inventor:
Noboru Kawada, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375357 ; 375222 ; 327141 ;
Abstract
A transmission synchronizing apparatus and method of a modem, in which a phase difference from a change point of an internal timing signal to a change point of a transmission timing signal is detected as a reference phase difference at the time of pull-in, based on a request to transmit from an external device. After pull-in, in a stationary communicating state, a phase difference is obtained from a change point of the internal timing signal to a change point of the transmission timing signal as a measured phase difference. The measured phase difference is controlled to coincide with the reference phase difference.