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:
May. 22, 2007
Filed:
Dec. 20, 2005
Applicant:
Hideki Hirosawa, Fujioka, JP;
Inventor:
Hideki Hirosawa, Fujioka, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to one embodiment, the switching power supply device comprises a DC-DC converter, an alternating current driver circuit, a smoothing capacitor and control circuitry. The control circuitry operates for adjusting a phase of an oscillation signal from the alternating current driver circuit to coincide start time points of current conducting periods between the output stage of the DC-DC converter and an input stage of the alternating current driver circuit.
Hirosawa, Hideki. (2007). Switching power supply device and method of controlling the switching device (U.S. Patent No. 7221111). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7221111
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile