Method of reducing vertical smears of a solid state image sensor
US4578707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Oct 18, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/625
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Herein disclosed is a method of reducing the vertical smears which are generated in a solid state image sensor including a plurality of vertical signal lines for transferring signal charges in a vertical direction and at least one charge transfer device for transferring the signal charges in a horizontal direction. The smear charges stored in the vertical signal lines and the signal charges generated in a photoelectric conversion element in response to an incident ray are inputted separately of each other for a horizontal blanking period to the charge transfer device for the horizontal transfer. During a tracing period, a smear voltage and a signal voltage are outputted separately of each other from said charge transfer device. The smear voltage adjusted is subtracted from the signal voltage to eliminate the smear component which has been mixed into the signal voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.