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:
Jul. 08, 1997
Filed:
Nov. 21, 1995
Martin Wagener, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
In a device for the serial exchange of data between two stations, each station has a serial interface which is connected to a common data transmission line. A first specific station has means which, during the reception of data, identify the two possible bit states on the basis of different voltage levels on the data transmission line. In contrast, the second specific station has means which, during the reception of data, identify the two possible bit states on the basis of the presence or absence of a specific current flow via the data transmission line. Furthermore, in another device for the serial exchange of data between two stations, suitable selection of resistors ensures that four different voltage levels are produced on the data transmission line when each station transmits a '1' bit state or a '0' bit state. The voltage levels are evaluated differently by the stations, with the result that simultaneous data transmission in both directions is also possible.