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. 28, 2006
Filed:
Mar. 02, 2004
Takashi Oshima, Saitama, JP;
Takeshi Doi, Uwajima, JP;
Kenji Maio, Tokyo, JP;
Irei Kyu, Kokubunji, JP;
Takashi Oshima, Saitama, JP;
Takeshi Doi, Uwajima, JP;
Kenji Maio, Tokyo, JP;
Irei Kyu, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In order to rapidly control the gains of a plurality of variable gain amplifiers VGAs, each of gain control circuits is configured to determine a gain to be set therein, based on gain control information received from other gain control circuits existing in its preceding stage or stages and the signal level detected by a level detector circuit connected thereto. By carrying out such gain control, a total application gain is stabilized more quickly by gain control. Therefore, even in receiving systems that the preparation period for reception is very short, desired gain control is achieved within this period and stable data reception can be performed.