Image reading apparatus
US5287198A · kind A · utility
2Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Jun 24, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40056
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus applicable to, for example, an electronic copier or a facsimile transceiver for reading an image by use of CCDs or similar reading elements. A circuit included in the apparatus and not having a time constant is driven at the same time as the start of an image reading operation, while a circuit having a time constant is driven earlier by taking account of the time constant. The apparatus, therefore, reduces electromagnetic interference and saves power while eliminating defective image signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.