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. 17, 2012
Filed:
Oct. 12, 2010
Youichirou Suzuki, Nishio, JP;
Noboru Maeda, Chiryu, JP;
Shigeki Takahashi, Okazaki, JP;
Takahisa Koyasu, Chita, JP;
Kazuyoshi Nagase, Kitanagoya, JP;
Tomohisa Kishigami, Obu, JP;
Youichirou Suzuki, Nishio, JP;
Noboru Maeda, Chiryu, JP;
Shigeki Takahashi, Okazaki, JP;
Takahisa Koyasu, Chita, JP;
Kazuyoshi Nagase, Kitanagoya, JP;
Tomohisa Kishigami, Obu, JP;
Nippon Soken, Inc., Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A transmission apparatus for differential communication includes a driver bridge circuit and a pair of noise protection circuits. The driver bridge circuit includes four output devices that are independently connected between each of a pair of transmission lines and a power line or a ground line. Each noise protection circuit is provided to a corresponding transmission lines. Each noise protection circuit includes a ground potential detector and an impedance controller. The ground potential detector detects a potential of the corresponding transmission line with respect to the ground line. The impedance controller causes an impedance of the corresponding transmission line with respect to the ground line to become equal to an impedance of the other transmission line with respect to the ground line, when the detected potential becomes outside a predetermined potential range.