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:
May. 30, 2006
Filed:
May. 14, 2001
Hiroshi Azakami, Ibaraki, JP;
Takaaki Konishi, Ibaraki, JP;
Hisaya Kato, Soraku-gun, JP;
Naoya Tokunaga, Moriguchi, JP;
Hiroaki Ozeki, Osaka, JP;
Kazuya Ueda, Hirakata, JP;
Hiroshi Azakami, Ibaraki, JP;
Takaaki Konishi, Ibaraki, JP;
Hisaya Kato, Soraku-gun, JP;
Naoya Tokunaga, Moriguchi, JP;
Hiroaki Ozeki, Osaka, JP;
Kazuya Ueda, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Abstract
A digital demodulation apparatus automatically controls gain based on a state of receiving a digital modulated signal. The digital demodulation apparatus amplifies a digital modulated signal wave received through the air with the gain automatically controlled so as to have a predetermined amplitude. In the digital demodulation apparatus, a receive level variation detector detects receive level variation, an amount of noise components of the received digital signal wave. A gain controllercontrols the gain with a receive level variation adaptive control signal based on the detected receive level variation, the amount of noise components.