Image reading apparatus including means for accurately determining the location of read image information
US4731668A · kind A · utility
22Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1987 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jun 16, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04734
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus comprises, in a preferred embodiment, LEDs and image sensors for reading image and location information of an original, another LED and a photo sensor for generating a read start clock, memories for storing the image and location information read by the image sensors in one-to-one correspondence, a transparent sheet with matrix stripes placed on the original to provide the location information of each image information, and a CPU for controlling the operation sequence and detecting a ramp in the reading apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.