Signal transfer apparatus, and imaging apparatus and radiation image pick-up system using it
US6538591B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Sep 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/195
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal transfer apparatus of high S/N ratio and high read speed suitable for use in photoelectric conversion circuit units with a large pixel count and an imaging apparatus and radiation image pick-up system. The signal transfer apparatus, comprises a plurality of terminals connected to a plurality of signal sources, and a read circuit unit for converting signals received from the terminals into series signals and outputting the resulting series signals. The read circuit unit comprises first operational amplifiers connected to the terminals, and second operational amplifiers for receiving outputs of the first operational amplifiers. And each of the first operational amplifiers comprises an inverting input terminal connected to each of the terminals, an output terminal with an integral capacitor and switch being connected in parallel between it and the inverting input terminal, and a non-inverting input terminal supplied with a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.