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:
Oct. 12, 2010
Filed:
Apr. 18, 2007
Kouji Ootaka, Toyohashi, JP;
Kouji Ootaka, Toyohashi, JP;
Denso Corporation, Kariya, JP;
Abstract
A communication system includes master and slave controllers, a local device connected to the slave controller, and a communication cable having a pair of wires and connected between the master and slave controllers. The master controller feeds a first DC voltage to the slave controller via the communication cable and communicates with the slave controller by changing the first DC voltage such that voltages on the wires of the communication cable are opposite in phase. The slave controller generates a second DC voltage from the first DC voltage and feeds the second DC voltage to the local device. When the master and slave controllers communicate with each other, the slave controller changes the second DC voltage such that voltages on terminals of the local device are opposite in phase and vary synchronously with the voltages on the communication cable.