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:
Feb. 26, 2008
Filed:
Jan. 13, 2005
Koichi Tokushige, Shizuoka, JP;
Yasuyuki Kojima, Hitachi, JP;
Tatsumi Yamauchi, Hitachiota, JP;
Makoto Ito, Shizuoka, JP;
Noriyuki Bunko, Shizuoka, JP;
Koichi Tokushige, Shizuoka, JP;
Yasuyuki Kojima, Hitachi, JP;
Tatsumi Yamauchi, Hitachiota, JP;
Makoto Ito, Shizuoka, JP;
Noriyuki Bunko, Shizuoka, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
An air conditioner and a power line communication system high in reliability and free of malfunction facilitates the installation work such as the wiring. The air conditioner for conducting communication through a power line includes a bridge unit connected to at least an outdoor unit through a transmission line, and at least an indoor unit connected from the power line through a blocking filter. A side of the bridge unit far from the outdoor unit is connected between the blocking filter and the indoor unit. The bridge unit subjects a signal from the outdoor unit to spread spectrum modulation and transmits it by superposing the resulting signal on the power line. The superposed signal is received and demodulated by the indoor unit.