Frequency level detecting method

专利名称：Frequency level detecting method发明人：Hideyuki Kusunoki申请号：US12878856申请日：20100909公开号：US08634446B2公开日：20140121

专利附图：

摘要：A frequency level detecting method includes counting pulses of a spread-spectrum clock, the spread-spectrum clock having a frequency that is modulated within afrequency range from a minimum frequency to a maximum frequency in a constantmodulation 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 leastone 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 fallwithin the one of the at least one to-be-counted value range, the level detection signalindicating that a frequency of the spread-spectrum clock falls within one of the pluralityof frequency levels that corresponds to one of the plurality of sub-ranges correspondingto the one of the at least one to-be-counted value range.

申请人：Hideyuki Kusunoki

地址：Nagoya JP

国籍：JP

代理机构：Baker Botts L.L.P.

更多信息请下载全文后查看