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. 16, 1996
Filed:
Aug. 01, 1994
Naofumi Furuta, Tachikawa, JP;
Sunx Limited, Tachikawa, JP;
Abstract
A serial data transmission device has a master unit, plural terminal units, and an abnormal detection unit connected by a signal line. Each terminal unit has an allocated address. The master unit interchanges data with each one of the plural terminal units in sequence. Each interchange of data with one terminal unit constitutes a cycle. Each terminal unit counts the number of data cycles of the master unit. When a terminal unit detects its assigned cycle number in the total sequence of cycles, a confirmation signal is output to the signal line. The abnormal detection unit determines the presence and location of an abnormality in accordance with the absence of a confirmation signal from a particular terminal.