Pulse width modulaton device and image forming apparatus
US7656422B2 · kind B2 · utility
2Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2007 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Mar 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/506
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disclosed device for generating a pulse-width modulated signal according to image data and based on a pixel clock signal includes a pixel clock generating unit configured to generate the pixel clock signal and a modulated data generating unit configured to generate the pulse-width modulated signal. The pixel clock generating unit includes a multi-phase clock signal generating unit, a comparing unit, a frequency calculation unit, a counting unit, and a pixel clock signal output unit. The modulated data generating unit includes a data converting unit, an edge time calculation unit, and a pulse-width modulated signal output unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.