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:
Nov. 27, 2007
Filed:
Mar. 22, 2005
Yoshiaki Shinohara, Yokohama, JP;
Yoshiaki Shinohara, Yokohama, JP;
Digian Technology, Inc., Yokohama, JP;
Abstract
Disclosed is a pulse width modulation method and apparatus capable of expressing as many values as possible in a pulse width modulation (PWM) period, while maintaining the center of pulse energy substantially equal to the center of the PWM period. For this end, prepared is the PWM pattern generatorincluding 2 kinds of PWM pulse generatorandfor generating pulses having the pulse width of 0˜N times of the reference clock period in 1 PWM period corresponding to a predetermined number N of the reference clock period. The PWM pulse generatorsandare properly switched by the switching circuitunder control of the control circuitfor performing time averaging process so that the centers of energy of the output pulses is substantially equal to the center of the PWM period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile