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:
Mar. 13, 2012
Filed:
Mar. 12, 2010
Tadahiro Kunii, Nagoya, JP;
Tadahiro Kunii, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A communication apparatus including: a modulator which modulates a reference clock signal having a predetermined basic frequency and outputs a modulated clock signal whose value fluctuates at a first frequency with respect to the basic frequency; a PWM signal generator which generates a PWM signal at a second frequency, with the modulated clock signal being as an operation clock; a switching portion which outputs a signal by switching an analog signal on the basis of the PWM signal; a filter which passes a signal included in an output signal of the switching portion, a frequency of the passed signal being lower than a third frequency, and a setting portion which sets the first frequency and the second frequency such that a fourth frequency in which a duty value of the PWM signal fluctuates is higher than the third frequency and such that the first frequency is higher than the second frequency.