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:
Sep. 04, 2012
Filed:
Jun. 06, 2008
Takehiro Matsuda, Tsu, JP;
Hiroji Kobayashi, Katano, JP;
Kenji Kuniyoshi, Katano, JP;
Hiroji Hatano, Tsu, JP;
Kaoru Mukai, Hirakata, JP;
Takehiro Matsuda, Tsu, JP;
Hiroji Kobayashi, Katano, JP;
Kenji Kuniyoshi, Katano, JP;
Hiroji Hatano, Tsu, JP;
Kaoru Mukai, Hirakata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A power line communications system includes slave apparatuses individually connected to multiple electric power line wirings; a master apparatus connected to one of the multiple electric power line wirings; and couplers each connected between the master apparatus and the others of the multiple electric power line wirings. The master apparatus includes a communicator for performing power line communications with the slave apparatuses via the electric power lines; a power supply terminal device connected to the one electric power line wiring; a communication connector provided between the communicator and the power supply terminal device; and a coupler connecting terminal device connected to each of the couplers via a signal line. The communication connector has a first capacitor connected to the power supply terminal device for cutting off a frequency component of commercial power supply and transmitting a frequency component for use in the power line communications, and a first transformer connected between the first capacitor and the communicator. The coupler connecting terminal device is connected between the first capacitor and the first transformer.