Image reading apparatus and method for driving appropriate photoelectric energy converting elements when first and second driving voltages are applied simultaneously
US5572255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Apr 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/701
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus and method in which a plurality of photoelectric energy converting elements disposed in a one-dimensional array is divided every m elements into n first blocks B.sub.1, B.sub.2, . . . , B.sub.n, driving voltages are applied sequentially to the units of m photoelectric energy converting elements in the first blocks B.sub.1, B.sub.2, . . . , B.sub.n, and the electrical signals of the photoelectric energy converting elements are read out. The drive side on which the driving voltage is sequentially applied to the above-mentioned divided n first blocks, B.sub.1, B.sub.2, . . . , B.sub.n is further divided every x first blocks into y second blocks C.sub.1, C.sub.2, . . . , C.sub.y, and are provided a first voltage application means which applies a first driving voltage (D1, D2, . . . , Dy) in sequence to the units of x first blocks B.sub.1, B.sub.2, . . . , B.sub.x in the second blocks C.sub.1, C.sub.2, . . . , C.sub.y, a second voltage application means which applies a second driving voltage (E1, E2, . . . , Ex) in sequence to the first blocks B.sub.1, B.sub.2, . . . , B.sub.x in the same relative positions in the respective second blocks C.sub.1, C.sub.2, . .…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.