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:
Feb. 18, 2003
Filed:
Jun. 11, 1999
Peter Heinrich, Rosenheim, DE;
STMicroelectronics GmbH, Grasbrunn, DE;
Abstract
A monitoring circuit for a data transmission network having a plurality of transmissive and receptive network nodes and a double-line bus connecting the network nodes and serving for redundant double transmission of digital communications, with a first line (A) and a second line (B) via which communication pulses transferred in the form of time-spaced pulse sequences are transferred in synchronous manner in terms of time slot, a potential change detector is provided by means of which the two lines can each be monitored for the presence of potential change activities and by means of which a condition can be detected in which, during a pulse sequence, potential change activities occur only on the first line, but not on the second line; and a first time measuring circuit is provided by means of which a time measurement of the duration of such a condition can be carried out, and when a predetermined duration of such a condition is exceeded, an error signal is generated.