Image reading apparatus and X-ray imaging apparatus
US7110498B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jan 6, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image reading apparatus includes a DC/DC power supply which supplies power to at least part of the apparatus, a photodetector array including two-dimensionally arranged photoelectric conversion elements, and a line selector and reading circuit which read signals from the photoelectric conversion elements for each row in the photodetector array as a unit. A line driving signal in the line selector is set to be synchronized with a reference clock for defining the oscillation frequency of the DC/DC power supply and have a period of an integer multiple of the reference clock. A sample/hold signal for determining the timing at which a signal read from the photodetector array is sampled/held is output at a predetermined phase timing of each period of the line driving signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.