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:
Oct. 21, 2014
Filed:
Sep. 20, 2011
Niels Ole Knudsen, Humlebaek, DK;
Soren Kilsgaard, Smorum, DK;
Niels Ole Knudsen, Humlebaek, DK;
Soren Kilsgaard, Smorum, DK;
Widex A/S, Lynge, DK;
Abstract
In order to minimize noise and current consumption in an EEG monitoring system () which can be continuously carried by a person to be monitored, an input converter () for an EEG monitoring system is devised. The analog-to-digital converter of the input converter has an input stage, an output stage, and a feedback loop, and the input stage comprises an amplifier (Q) and an integrator (RLF). A voltage transformer (IT) is placed in the input converter upstream of input stage. The transformation ratio of the voltage transformer (IT) has a transformation ratio such that it provides an output voltage larger than the input voltage, thereby multiplying the signal voltage for the input stage by a fixed factor. The voltage transformer (IT) is a switched-capacitor voltage transformer having at least two capacitors (C, C, C). The invention further provides a method of converting an analog signal, and an EEG monitoring system comprising the input converter ().