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:
Jan. 14, 1992
Filed:
May. 13, 1991
Applicant:
Inventor:
Norihiko Sugimoto, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 8513 ; 370 8512 ;
Abstract
An identification code for identifying a data frame is added to the data frame transmitted from a station. When a bridge which interconnects transmission paths is to relay the data frame, it compares the identification code with the identification code stored in a memory under a condition of activation of a timer and relays only the data frame having a different identification code. The timer is activated by a first-coming data frame and deactivated after a predetermined time interval.