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. 01, 1998
Filed:
Dec. 20, 1994
Applicant:
Inventor:
Shinya Muraoka, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H04L / ; H04L / ; H04J / ;
U.S. Cl.
CPC ...
375362 ; 375285 ; 375296 ; 370509 ;
Abstract
In a reception circuit, a frame status signal indicating whether frame synchronization is established is output from a frame synchronizing circuit to a frame counter circuit. When the frame synchronization is established, a timing signal synchronized with a reception frame pulse is output from the frame counter circuit. When the frame synchronization is not established or out of synchronization, a built-in frame counter is operated in a flywheel mode to output a timing signal to synchronize a baseband circuit and an I/F buffer circuit, so that communication with an external circuit can be kept normal irrespective of presence or absence of frame synchronization.