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:
Jul. 09, 1991
Filed:
Jul. 19, 1989
Applicant:
Inventors:
Assignees:
Rohm Co., Ltd., Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307265 ; 307234 ; 307270 ; 307355 ;
Abstract
A pulse-width modulator and a driving unit using the same produce from an input signal, two pulse-width modulated signals of different phases with their pulse widths changing in opposite directions, and then produce final modulated signals from the difference between the pulse widths of the two pulse width modulated signals of different phases, thereby increasing the precision.