Optical scanner and method for generating and detecting a composite dot on a scanning medium
US5006704A · kind A · utility
11Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Oct 5, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Oct 5, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanner and method in which light beams from a plurality of sources are directed onto a medium to form a composite spot. The relative positions of the beams are detected and changed to change the diameter of the composite spot so that lines formed by such spots appear unbroken. The modulating times, intensities and number of sources of the beams can also be varied to provide a linear relation between the dither matrix and the picture element density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.