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:
Apr. 12, 1988
Filed:
Feb. 28, 1986
Hitachi, Ltd., Toyko, JP;
Abstract
In a digital transmission system wherein a plurality of transmission control units each of which has received data error detecting means, data storing means, receiving means and transmitting means are successively connected by a transmission medium, the transmission control unit is operated in a through mode in which received data is directely forwarded under a normal state, and when an error has been detected in received data, the operation mode of the transmission control unit is switched to a store-and-forward mode in which a group of received data are first stored and are thereafter forwarded only in the case of the absence of an error. When normal data have been continuously received in a predetermined number of times in the operation in the store-and forward mode, the operation mode of the transmission control unit is switched to the through mode.