Counting device, distance meter, counting method,

专利名称：Counting device, distance meter, counting

method, and distance measuring method

发明人：Tatsuya, Ueno申请号：EP08001079.6申请日：20080122公开号：EP1953567A3公开日：20100922

专利附图：

摘要：A counting device includes a counting unit (80), period measuring unit (840),frequency distribution generating unit (841), representative value calculation unit (842),and correction value calculation unit (843). The counting unit (80) counts the number of

signals input during a counting interval. The number of signals has a linear relationshipwith a physical quantity. The signals have a substantially single frequency when thephysical quantity is constant. The period measuring unit (840) measures the period of asignal every time a signal is input during the counting interval. The frequency distributiongenerating unit (841) generates the frequency distribution of signal periods from themeasurement result. The representative value calculation unit (843) calculates therepresentative value of the distribution of periods of signals from the frequencydistribution. The correction value calculation unit (843)obtains a total sum Ns of

frequencies in a class not more than a first predetermined multiple of the representativevalue calculated and a total sum Nw of frequencies in a class not less than a secondpredetermined multiple of the representative value from the frequency distribution, andcorrects the count result on the basis of the frequencies Ns and Nw.

申请人：Yamatake Corporation

地址：2-7-3 Marunouchi, Chiyoda-ku Tokyo 100-6419 JP

国籍：JP

代理机构：Maser, Jochen

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