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.:

US 7609980 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 27, 2009

Filed:

Sep. 28, 2005
Applicants:

Masamichi Nogami, Tokyo, JP;

Junichi Nakagawa, Tokyo, JP;

Masaki Noda, Tokyo, JP;

Toyoaki Uo, Tokyo, JP;

Inventors:

Masamichi Nogami, Tokyo, JP;

Junichi Nakagawa, Tokyo, JP;

Masaki Noda, Tokyo, JP;

Toyoaki Uo, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A first average detecting circuit detects an average of output signals of a pre-amplifying unit that controls an amplification gain based on a result of comparison between an output of the first average detecting circuit and a predetermined reference voltage. A discriminating circuit receives an output signal of the pre-amplifying unit as an input signal and performs a signal discrimination of the input signal based on a threshold. A second average detecting circuit detects an average of input signals to the discriminating circuit. The discriminating circuit receives an output of the second average detecting circuit as the threshold.


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