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:
Sep. 14, 2010
Filed:
Dec. 19, 2008
Morito Morishima, Fukuroi, JP;
Morito Morishima, Fukuroi, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A time period control unit controls a time length 'TU' of each of unit terms 'U' in a variable manner. A pulse-width modulating unit is arranged by a holding unit, a counting unit, and a waveform generating unit. The holding unit holds thereinto a plurality of data “XD” every unit term “U”, which are sequentially supplied, as data “XE.” The counting unit changes a count value “X” during each of the unit terms “U.” The waveform generating unit generates such a pulse-width modulating signal “S” that pulses “P” have been arranged every unit term “U”, while time points when a large/small relationship between the count value “C” and a numeral value of the data “XE” held by the holding unit is inverted are defined as edge portions of the pulses.