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. 30, 1980
Filed:
Jul. 31, 1978
Martin Chown, Harlow, GB;
Jeffrey G Farrington, Bishop's Stortford, GB;
International Standard Electric Corporation, New York, NY (US);
Abstract
In a closed-loop multiple data terminal data transmission system, each message includes in addition to a message portion, a prefix portion having at least the address of the terminal for which the message is intended. When such a message reaches a data terminal its address is checked, and if not for that terminal, the prefix and the message portions are repeated along the loop. If the message is for the terminal only the prefix is repeated along the loop, the message portion being retained at the intended terminal. The prefix with no attached message eventually reaches the originating data terminal where its arrival indicates that the message has reached its destination and that the loop is intact.