Imaging systems with selectable column power control
US9053993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Aug 19, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/709
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electronic devices may include image sensors having image pixel arrays with image pixels arranged in pixel rows and pixel columns. Each pixel column may be coupled to a column line having column readout circuitry. The column readout circuitry on each column line may include signal processing circuitry and a latch circuit. The latch circuit on each column line may be used to selectively enable and disable the signal processing circuitry on that column line. Each latch circuit may be coupled to first and second signal lines for globally enabling and disabling the signal processing circuitry on all of the column lines. Each latch circuit may be coupled to column decoder circuitry. The column decoder circuitry may provide a column-select signal to latch circuits on a chosen subset of column lines that enables the signal processing circuitry on those column lines by setting those latch circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.