Reference clock-less CMOS image sensor
US10175715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/7795
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods for a reference clock-less CMOS image sensor are disclosed herein. An example apparatus may include a controller coupled to an image sensor via a serial bus, and the controller may provide an access burst to the image sensor over the serial bus, the access burst including a plurality of data signals and an associated clock signal, where the associated clock signal is a timing signal for the acquisition of bits of the plurality of data signals. The image sensor may calibrate an internal clock signal in response to a comparison of a number of cycles of the internal clock signal occurring during the access burst to a number of cycles of the associated clock signal occurring during the access burst, where the associated clock signal cycles at a first frequency and the internal clock signal cycles at a second frequency different than the first frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.