Signal transmitting circuit
US9396871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Dec 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2038/143
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter circuit feeds to a transmitter coil, every time transmission data changes in logical value, a current signal in pulse form having a positive or negative polarity that is alternately inverted in response to each change in logical value; and a receiver circuit inputs induction voltage signals each being double pulses having both positive and negative polarities, which have been induced in a receiver coil by the current signal fed to the transmitter coil, to demodulate the transmission data. The receiver circuit includes: an amplifier that amplifies the induction voltage signals of double pulses induced in the receiver coil; and a signal generating unit that, when detecting first single pulses in the induction voltage signals of double pulses amplified by the amplifier, sets up an insensitive period for second single pulses therein, to generate an output signal corresponding to the transmission data, based solely on the first single pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.