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. 16, 2011
Filed:
Jan. 29, 2008
Ryuji Aono, Numazu, JP;
Ryuji Aono, Numazu, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo-To, JP;
Abstract
This disclosure concerns an amplitude detector comprising: a maximum-minimum detector detecting a maximum and a minimum values of a digital signals; a first and a second lowpass filters respectively having a cutoff frequency lower than a frequency of the waveform signal; a cycle detector detecting a cycle of the waveform signal; a correction coefficient generator generating a numeric value of a correction coefficient expressed by a calculation with respect to the cycle of the waveform signal and a cycle of the sampling; a first multiplier generating a corrected maximum value by multiplying the maximum value of the digital signals by the correction coefficient; a second multiplier generating a corrected minimum value by multiplying the minimum value of the digital signals by the correction coefficient; and an output portion outputting the corrected maximum value or an absolute value of the corrected minimum value as the amplitude of the waveform signal.