Focus detection apparatus, method of controlling the same, and storage medium
US9554033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2015 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Jul 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/701
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A focus detection apparatus comprises a line sensor including a photoelectric conversion element and an integrating capacitor, a storage unit configured to store information concerning a defective pixel, a first comparison unit configured to compare a signal from the defective pixel with a predetermined threshold, a switching unit configured to switch between a first accumulation mode and a second accumulation mode, and a control unit configured to control the switching unit so as to set the line sensor in the first accumulation mode if the first comparison unit determines that a signal from the defective pixel is not more than the predetermined threshold and set the line sensor in the second accumulation mode if the first comparison unit determines that a signal from the defective pixel is larger than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.