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. 06, 2007
Filed:
May. 19, 2004
Eiji Takegami, Tokyo, JP;
Eiji Takegami, Tokyo, JP;
Abstract
Without shortening clock pulse duration serving as a unit time of a pulse generator, a pulse-width control is possible in which pulse duration varies in increments of a time length shorter than the unit time. A time width Ton_s of a pulse width finely dividing signal Vs from a DSPvaries by clock pulse duration Tin response to variations in an output voltage Vo. A time control circuitthat has received the pulse width finely dividing signal Vs generates, in a control signal Vd, varying segmentsfor making the time width of the pulse drive signal Vg vary by a shorter time ΔTd than the clock pulse duration T. Consequently, resolution of the time width of the pulse drive signal Vg is improved so as to be higher than the clock pulse duration T, which is time resolution of the DSPitself.