Retinal apparatus and methods
US9412041B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Apr 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/049
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Artificial retina may be implemented. A retinal apparatus may comprise an input pixel layer, hidden photoreceptive layer, an output neuron layer, and/or other components. Individual cones of the photoreceptive layer may be configured to receive input stimulus from one or more cones within the cone circle of confusion. The cone dynamic may be described using a diffusive state equation characterized by two variables configured to represent membrane voltage and current. Diffusive horizontal coupling of neighboring cones may effectuate non-separable spatiotemporal response that is configured to respond to contrast reversing and/or coherent moving stimulus. The photoreceptive layer high-pass filtered output may facilitate contrast detection by suppressing time-invariant component of the input and reducing sensitivity of the retina to the static inputs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.