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:
Jan. 18, 2022
Filed:
Nov. 18, 2020
Endress+hauser Se+co. KG, Maulburg, DE;
Chris Abbott, Indianapolis, IN (US);
Gautham Karnik, Whitestown, IN (US);
Endress+Hauser SE+Co. KG, Maulburg, DE;
Abstract
A bidirectional serial communication interface comprising a slave powered by a master connected to the slave via a signal line and a return line is disclosed. The master includes a master switch inserted in a line connecting a supply voltage to the signal line and a transceiver transmitting binary signals by opening and closing the master switch and receiving binary signals whilst the master switch is open. The slave includes an energy storage charged via the signal line and providing an internal power supply; a pull-up switch inserted in a line connecting the signal line to the internal power supply; a pull-down switch inserted in a line connecting the signal line to the return line; and a transceiver transmitting binary signals by opening and closing the pull-up and the pull-down switch whilst the master switch is open and receiving binary signals whilst the pull-up and the pull-down switch are open.