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. 08, 2000
Filed:
Feb. 04, 1998
Masaki Yoshino, Kanagawa, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a pulse width modulation (PWM) control circuit, a free run counter counts a pulse signal to count a value, and generates an overflow signal when the counted value is equal to a predetermined value. A transfer control circuit allows a set value to be transferred from a master compare register to a slave compare register and inhibits the transfer of the set value in response to the overflow signal. A comparing circuit compares the counted value in the free run counter and the set value transferred into the slave compare register and generates a coincident signal when the counted value is coincident with the set value. An output circuit generates a PWM signal in response to the overflow signal and the coincident signal.