Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus
US7212224B2 · kind B2 · utility
20Cited by
13References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 30, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jul 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1219
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.