Signal processing apparatus and signal processing method, and image capturing apparatus
US9918033B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2017 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Mar 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processing apparatus comprising: an analog-digital converter that uses reference signals having different slopes from each other; a supply unit that supplies analog signals of predetermined different output levels; and a calculation unit that calculates a slope ratio and an offset amount between the plurality of different slopes for correcting a converted digital signal based on digital signals respectively obtained by converting the analog signals of the different output levels using the reference signals. In a case where the conversion is performed using a reference signal with a steeper slope, the supply unit supplies at least one high level analog signal whose level is higher than a case where the conversion is performed using a reference signal with a gentler slope, and a digital signal obtained by converting the high level analog signal is further used when calculating the slope ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.