The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2018
Filed:
Apr. 08, 2016
Seiko Epson Corporation, Tokyo, JP;
Norimitsu Baba, Shiojiri, JP;
Hirokazu Nishijima, Shiojiri, JP;
Seiko Epson Corporation, , JP;
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.