Video signal processing circuit, imaging device and video signal processing method
US8169512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2010 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital still camera includes an amplification circuit, a timing generator, sample hold circuits, a differential amplifier, an analog/digital conversion circuit and a control unit. The generator generates a first-pulse signal and a second-pulse signal at different timings. The circuits sample analog video signals outputted from the amplification circuit at timings when the first-pulse signal and second-pulse signal, respectively, are provided and hold levels of the analog video signals. The amplifier acquires a difference between the levels of the analog video signals. The circuit obtains a digital video signal corresponding to the analog video signal on the basis of the difference. The unit changes the timings to provide the first- and second-pulse signals to the first- and second-sample hold circuits, respectively, and a bias current depending on the driving period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.