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:
Jun. 23, 2015
Filed:
Jan. 12, 2012
Naoki Hongo, Ome, JP;
Naoki Hongo, Ome, JP;
Hitachi Kokusai Electric Inc., Tokyo, JP;
Abstract
To effectively control the amplitude vs. power supply voltage characteristics, for example, in an ET amplifier. An amplifying device for amplifying an input signal wherein: amplifier means () amplifies the input signal; amplification control means () control the power supply voltage to the amplification means on the basis of the input signal; first detection means () detects the amplification factor between the input signal and a feedback signal obtained by means of a feedback of the signal that has been amplified by the amplification means; second detection means () detects the variance of the amplification factors for each value or range of the amplitude of the input signal; and amplification control update means () performs an update so as to increase the power supply voltage with respect to a value or range of amplitude that exhibits a variance in excess of a predetermined threshold value, or to reduce the power supply voltage with respect to a value or range of amplitude that exhibits a variance lower than the predetermined threshold value.