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. 10, 2012
Filed:
Jul. 08, 2011
Kazuyoshi Takai, Tokyo, JP;
Takahiro Yashita, Tokyo, JP;
Kikuo Kato, Tokyo, JP;
Kazuaki Kubo, Tokyo, JP;
Kazuyoshi Takai, Tokyo, JP;
Takahiro Yashita, Tokyo, JP;
Kikuo Kato, Tokyo, JP;
Kazuaki Kubo, Tokyo, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
In a power phase period when in normal operation, switch portions SWH and SWL and switch portions SWH and SWL are turned ON, respectively, and switch portions SWH and SWL are turned OFF. And floating power supply is provided from an electrostatic capacitance element CS to buses A and B, a floating control circuit, a transmitter circuit, and a receiver circuit, respectively. In a data phase period, the switch portions SWH and SWL are turned ON, and the switch portions SWH, SWL, SWH, and SWL are turned OFF. By that manner, the electrostatic capacitance element CS is charged by the power supply of a battery B, and an electrostatic capacitance element CH provides the floating power supply to the floating control circuit, the transmitter circuit, and the receiver circuit, respectively. By this manner, a floating switch unitin which the number of the switch portions is considerably reduced can be configured.