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. 26, 2015
Filed:
Jun. 25, 2014
Anritsu Corporation, Kanagawa, JP;
ANRITSU CORPORATION, Kanagawa, JP;
Abstract
To set an optimum offset voltage and detect an NRZ signal with a very small amplitude. An NRZ signal amplifying deviceincludes: input-side voltage detection meansfor detecting a high-level voltage and a low-level voltage of an input signal to the main amplifier; output-side voltage detection meansfor detecting the two signals inverted relative to each other; and offset voltage control meansfor calculating a center voltage between the detected high-level voltage and low-level voltage, setting an offset voltage at which the center voltage is the center of an appropriate input range of the main amplifierto the offset circuit, and finely adjusting the offset voltage, such that a voltage difference between the detected two signals inverted relative to each other and a polarity change point is close to 0.