Control device for a charge detection circuit
US5191599A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Nov 8, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A control device for a charge detection circuit comprising a CCD final gate electrode formed on a semiconductor substrate, an electric potential barrier forming gate electrode placed adjacent to the CCD final gate electrode, a diffusion region formed adjacent to the electric potential barrier forming gate electrode, a reset transistor connected to the diffusion region, a source follower circuit which uses as an input an electric potential in the diffusion region, a sample and hold circuit for receiving the output of the source follower circuit at a specified timing, a reference voltage source which has a value determined by the dynamic range of the source follower circuit, and an integrator which integrates a difference between the output of the sample and hold circuit and the output of the reference voltage source, and applies a value obtained by the integration to the electric potential barrier forming gate electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.