Light beam scanning system
US3999010A · kind A · utility
23Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Oct 16, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a laser beam scanning system for recording information on a recording material employing a rotating mirror, a photodetector is provided to receive a laser beam in the start position of rasters. The photodetector supplies a synchronizing signal for making a synchronization between the laser beam scanning and a video signal supplied to a light modulator to modulate the laser beam. The frequency of base clock pulses is several times as large as that of the video clock pulses, whereby the start positions of the effective rasters on the recording material are aligned with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.