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. 18, 1983
Filed:
Aug. 21, 1981
Applicant:
Inventor:
Michika Uesugi, Fuji, JP;
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363132 ;
Abstract
Ideal polyphase sinusoidal waveforms are divided into a plurality of consecutive sections having equal width in electric angles, and the sections are encoded for different frequencies to form encoded data which are stored in a ROM. The data stored in the ROM are selectively read out according to a predetermined conduction pattern for an inverter. Then, the read out encoded data are combined in a succession to form positive half cycle waveforms and the read out encoded data are inverted and then combined to form negative half cycle waveforms so as to form polyphase sinusoidal waveforms utilized as control signals of the inverter.