Communication system, electronic timepiece, and communication device
US10009116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2016 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Apr 15, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Either the electronic timepiece or the communication device of a communication system has a first communicator, and the other has a second communicator. The first communicator has a first transmitter including a transmission coil and a drive circuit configured to drive the transmission coil, and is configured to transmit signals by communicating through electromagnetic coupling; and an first receiver including a photodetector and a detection circuit that detects the output value of the photodetector, and configured to receive signals by optical communication. The second communicator has an second transmitter including a light-emitting device and a drive circuit that drives the light-emitting device, and configured to transmit signals by optical communication; and a second receiver including a reception coil and a detection circuit that detects the output value of the reception coil, and configured to receive signals by communicating through electromagnetic coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.