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:
May. 13, 1986
Filed:
Jun. 14, 1983
Applicant:
Inventor:
Eiichi Adachi, Atsugi, JP;
Assignee:
Ricoh Company, Ltd., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ; G06F / ;
U.S. Cl.
CPC ...
371 32 ; 371-5 ;
Abstract
A data communication system having an automatic request for repetition ('ARQ') function shifts down its MODEM rate to a slower value when the number of trials of retransmission has reached a predetermined value. In the present system, the predetermined value is supplied from the receiver to the transmitter prior to transmission operation of data from the transmitter to the receiver, thereby allowing to maintain a high use rate of the transmission line without significantly decreasing the overall data transmission speed.