Foveal imager readout integrated circuit (ROIC)
US9344660B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Nov 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image comprising a plurality of pixels at a predetermined pixel pitch, is received, A plurality of image intensity signals, are received at readout circuitry responsive to an image intensity per pixel. A portion of the received image is divided into a plurality of fixed paxels, each paxel comprising a rectilinear collection of pixels, having a first length and first predetermined number of rows, and second width having second predetermined number of columns. The plurality of fixed paxels are provided to a respective plurality of configurable Analog to Digital Converters (ADCs) responsive to a respective plurality of paxels and configurable to generate respective ADC output signals that implement a tradeoff between Effective Number of Bits (ENoB) and power consumption while maintaining a substantially fixed spatial frequency. Some paxels corresponding to a first predetermined fixation point are digitized with higher ENoB than the other paxels. A foveated image is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.