Exposure controlling method and an exposure controlling apparatus
US5740330A · kind A · utility
8Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Apr 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0071
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Representative points are added to peripheral pixels in every black pixel groups. The thus generated representative points are joined by a curve-fitting approximation method to obtain an outlined curve for every black pixel group. One pixel is divided into a multiple number of sub-pixels. Pulse signals supplied to a laser is modulated on pulse width so that the sub-pixels (hatched section) belonging to the inside of each curve may be exposed to laser beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.