Coherent inductive communications link for biomedical applications
US4561443A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Mar 8, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-way coherent inductive communications link between an external transceiver and an internal transceiver located in a biologically implanted programmable medical device. Digitally formatted command data and programming data is transmitted to the implanted medical device by frequency shift keying the inductive communications link. Internal transceiver is powered by the inductive field between internal and external transceivers. Digitally formatted data is transmitted to external transceiver by internal transceiver amplitude modulating inductive field. Immediate verification of the establishment of a reliable communications link is provided by determining existence of frequency lock and bit phase lock between internal and external transceivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.