Ad conversion device, ad conversion method, image sensor, and electronic apparatus
US11240455B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2017 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/123
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present technology relates to an AD conversion device, an AD conversion method, an image sensor, and an electronic apparatus that are able to achieve high-speed, low-power-consumption AD conversion. In a case where an electrical signal and a variable-level reference signal are compared by a comparator and the result of comparison is used to perform AD (Analog to Digital) conversion of the electrical signal, control is exercised in such a manner that a bias current flowing in the comparator to operate the comparator during a certain section of the reference signal including a section where the reference signal changes is increased from a first current, which is larger than 0 (zero), to a second current, which is larger than the first current. The present technology is applicable, for example, to AD conversion of an electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.