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:
Oct. 20, 2009
Filed:
Jun. 10, 2004
Masayoshi Kanno, Tokyo, JP;
Hiroyuki Mori, Kanagawa, JP;
Shinichiro Yamada, Kanagawa, JP;
Tsutomu Noguchi, Kanagawa, JP;
Masayoshi Kanno, Tokyo, JP;
Hiroyuki Mori, Kanagawa, JP;
Shinichiro Yamada, Kanagawa, JP;
Tsutomu Noguchi, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
A charging circuit includes a generator, a step-down circuit for reducing an output voltage of the generator to a predetermined voltage, a current controller for controlling a charging current that is supplied from the step-down circuit to a secondary battery, based on an amount of power generated by the generator, a mode selector for selecting charging modes, and a monitor for monitoring an amount of stored electricity. The step-down circuit receives an output of the generator, in charging, at a high voltage and a small current and is used to charge the battery at a low voltage and a large current.