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:
Aug. 02, 2016
Filed:
Sep. 11, 2013
Masaaki Tsuji, Osaka, JP;
Kohji Kawahata, Osaka, JP;
Nobunari Tsukamoto, Osaka, JP;
Naohiro Itoh, Hyogo, JP;
Masaaki Tsuji, Osaka, JP;
Kohji Kawahata, Osaka, JP;
Nobunari Tsukamoto, Osaka, JP;
Naohiro Itoh, Hyogo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An amplifier circuit that amplifies a carrier wave that a transmitting and receiving part has received, and includes a superimposition wave generation part that generates a superimposition wave to be superimposed onto the carrier wave; an amplifying part that adds the carrier wave and the superimposition wave to obtain an amplified carrier wave and outputs the amplified carrier wave; and an amplitude detection part that detects, based on a change in an amplitude value of the carrier wave, that the carrier wave is a predetermined carrier wave that carries a predetermined communication signal. The amplifier circuit outputs the amplified carrier wave when having detected the predetermined carrier wave.