Device and method for reading electric currents resulting from an electromagnetic signal detector
US8217641B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jun 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for reading electric currents including a capacitive element to integrate the current, the terminals of the capacitive element being connected to the mass and to an output branch of the device respectively, and a differential pair including: a first transistor mounted between the input branch of the input stage and the capacitive element, the transistor being controlled by a polarized impulse voltage, capable of putting the first transistor alternately into the off state and then into the on state; and a second transistor mounted between the input branch of the input stage and a potential other than that of the capacitive element, said transistor also being controlled by a polarized impulse voltage, capable of putting the second transistor alternately into the off state and then into the on state, wherein the second transistor is mounted in phase opposition relative to the first transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.