Solid-state imaging apparatus and method of driving the same
US8836838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Mar 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A solid-state imaging apparatus includes a plurality of pixels arranged two-dimensionally in a matrix, a reference signal generating circuit adapted to generate a ramp signal, a counter circuit adapted to perform a counting operation according to output of the ramp signal, comparators arranged on a column by column basis and adapted to compare signals read out of the pixels with the ramp signal, and memories arranged on a column by column basis and adapted to store digital data, wherein if output of the comparator is not changed during an AD conversion period, digital data of a predetermined value is stored in the memory. The solid-state imaging apparatus implements overflow handling using a simplified circuit configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.