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. 10, 2005
Filed:
Sep. 27, 2004
Applicant:
Hiroshi Kushihara, Nagano-ken, JP;
Inventor:
Hiroshi Kushihara, Nagano-ken, JP;
Assignee:
Tamagawa Seiki Kabushiki Kaisha, Nagano-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M001/12 ;
U.S. Cl.
CPC ...
Abstract
To enhance analog to digital conversion performance by obtaining a digital angle output using a negative feedback system including a resolver within a closed loop. The present invention provides a method of converting an analog signal into a digital signal, including inputting a two-phase sinusoidal signal an R/D conversion portion and converting an input rotational angle (θ) into a digital angle output (Φ), in which the method includes obtaining the digital angle output (Φ) using a negative feedback control system including the resolver within a closed loop.