Tone-detection method and apparatus for detecting at least one tone in dual-tone multifrequency signal,申请号EP19930480050-传众专利搜索

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发明名称	Tone-detection method and apparatus for detecting at least one tone in dual-tone multifrequency signal
摘要
申请公布号	EP0622962(B1)	申请公布日期	2000.04.12
申请号	EP19930480050	申请日期	1993.04.29
申请人	INTERNATIONAL BUSINESS MACHINES	发明人	CESARO, CLAUDE;RICHTER, GERARD
分类号	H04Q1/45;H04Q1/457;(IPC1-7):H04Q1/457	主分类号	H04Q1/45
代理机构		代理人
主权项
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