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:
Jan. 21, 2014
Filed:
Sep. 09, 2010
Hideyuki Kusunoki, Nagoya, JP;
Hideyuki Kusunoki, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A frequency level detecting method includes counting pulses of a spread-spectrum clock, the spread-spectrum clock having a frequency that is modulated within a frequency range from a minimum frequency to a maximum frequency in a constant modulation period of time, the frequency range being divided into a plurality of sub-ranges each corresponding to one of a plurality of frequency levels; determining at least one to-be-counted value range corresponding to one of the plurality of sub-ranges; judging whether or not the counted pulses fall within one of the at least one to-be-counted value range; and generating a level detection signal if the counted pulses fall within the one of the at least one to-be-counted value range, the level detection signal indicating that a frequency of the spread-spectrum clock falls within one of the plurality of frequency levels that corresponds to one of the plurality of sub-ranges corresponding to the one of the at least one to-be-counted value range.