Apparatus and method of detecting horizontal synchronization signal in image forming apparatus
US8624948B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1219
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a device for detecting a horizontal synchronization signal of an image forming apparatus. The device includes a light intensity converter to convert light intensity of a first beam emitted from a first light source and light intensity of a second beam emitted from a second light source to be different from each other, and outputting the first and second beams; a photo detector to receive the first beam and the second beam output from the light intensity converter, and outputting a first signal having a first level at a time of receiving the first beam and a second level at a time of receiving the second beam; and a horizontal synchronization signal detector to detect a horizontal synchronization signal of the first beam and a horizontal synchronization signal of the second beam by using the first signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.