Image sensors and image processing systems using multilevel signaling techniques
US10506189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Oct 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a pixel array configured to generate a plurality of pixel signals, an analog to digital converter circuit coupled to the pixel array and configured to generate respective digital codes responsive to respective ones of the pixel signals, a plurality of memories, respective ones of which are configured to store respective bits of the digital codes, a signal processing circuit coupled to a plurality of memories and configured to generate analog signals responsive to the stored bits, each of the analog signals corresponding to multiple ones of the stored bits, and a comparator circuit configured to compare the analog signals to respective ones of a plurality of reference signals to generate digital signals corresponding to the multiple ones of the stored bits. Related image processing systems and methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.