Image sensor and imaging method with single shot compressed sensing
US9191026B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 18, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Jan 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CMOS image sensor includes a plurality of pixel elements arranged in a two-dimensional array, analog signal multiplexers, over-sampling A/D converters and an activation code generator. The sensor is configured to construct an image by using less number of A/D conversions, thereby reducing the power consumption of the sensor. The activation code generator generates a bit stream of random binary sequences which determine which A/D converter is activated. The image sensor offers digitally compressed data, the number of which is significantly less than the total number of pixels. Further, the image sensor not only reduces the power consumption of the A/D converters (by reducing the number of A/D conversions) but also reduces the I/O power consumption. An original image focused on the sensor is recovered from the compressed data by using principles of compressed sensing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.