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:
Mar. 22, 2011
Filed:
Apr. 03, 2007
Nobutaka Kodama, Fukuoka, JP;
Hisao Koga, Fukuoka, JP;
Mutsuhiko Oishi, Fukuoka, JP;
Ryota Yukizane, Fukuoka, JP;
Fumio Ichihara, Fukuoka, JP;
Nobutaka Kodama, Fukuoka, JP;
Hisao Koga, Fukuoka, JP;
Mutsuhiko Oishi, Fukuoka, JP;
Ryota Yukizane, Fukuoka, JP;
Fumio Ichihara, Fukuoka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
Provided is a multi-carrier communication apparatus, power line communication circuit, and multi-carrier communication method capable of decreasing omission of carrier detection even when a plurality of communication apparatuses are simultaneously transmitting signals at the state of time discord. Digital signals transmitted from a digital signal-processing unitare converted into analog signals by an analog circuit unitand then transmitted from a pair of linesandvia a communication transformer. The digital signal-processing unithas a frequency carrier detecting unitwhich detects the existence of a carrier on the basis of a frequency characteristic of the received signal and the frequency carrier detecting unitdetects the carrier by taking correlation between sub-carriers adjacent to each other at every other interval.