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:
Feb. 26, 1985
Filed:
Mar. 10, 1983
Applicant:
Inventors:
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
332 / ; 375 22 ;
Abstract
The invention provides a pulse-width modulation circuit in which an output from a latch circuit for holding a count obtained by counting a reference clock signal in accordance with the period of a signal to be modulated is compared by a comparator with an output from a ramp counter for counting the reference clock signal at a predetermined period so as to perform a pulse-width modulation. The number of bits of the comparator and the ramp counter is decreased by n bits with respect to the number N (N>n) of bits of the latch circuit.