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:
Apr. 13, 2004
Filed:
Nov. 17, 2000
Applicant:
Inventor:
Motomu Hayakawa, Shiojiri, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 5/00 ;
U.S. Cl.
CPC ...
H04B 5/00 ;
Abstract
An electronic device in which electrical power transfer and data transfer are performed by exchanging physical energy between a station and an electronic watch. In the station, a packet creating circuit creates either a charging packet or a data packet. The station transmits the created packet to the electronic watch using electromagnetic coupling. In the electronic watch, a packet determining circuit determines the format of the transmitted packet. The charging operation of a secondary battery and the writing operation of the transferred data to a memory are switched in accordance with the determination result of the packet determination circuit.