Signal processing in devices, for use with a deficient signal-responsive body part
US8290597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Jan 30, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cochlear implant provides electrical pulses to neurons and is configured to convert the excitation signal into a sparsified signal for electrically stimulating the neurons, thereby reducing the redundancy of the stimuli applied to the neurons. A signal analyser is configured to perform dimension reduction or factorisation of said excitation signal in the time domain or in the frequency domain followed by a sparse transform, the resulting relatively clean output signal providing the input to an inverse transformation step to create the sparsified signal. The dimension reduction or factorisation can be performed by principal component analysis (PCA), and the sparse transform can be performed by independent component analysis (ICA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.