CN1331541A - 可达成双制式来方电话显示的预先自动判别装置 - Google Patents
可达成双制式来方电话显示的预先自动判别装置 Download PDFInfo
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- CN1331541A CN1331541A CN 00109720 CN00109720A CN1331541A CN 1331541 A CN1331541 A CN 1331541A CN 00109720 CN00109720 CN 00109720 CN 00109720 A CN00109720 A CN 00109720A CN 1331541 A CN1331541 A CN 1331541A
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/*来电显示预先自动判别*/ 启动DTMF解码器,但尚未认定是FSK或DTMF系统Forever (持续接收资料) { if(已经认定是F8K系统) 执行FSK解码器 else if(已收集到一组frame的资料) { if(已经认定是DTMF系统) 执行DTMF解码器 else { 计算DTMF所需的频谱和1300Hz的频谱 if(有一个列频谱和一个行频谱符合DTMF规定)解出对应的 DTMF字元 if(和前一组frame或连续一组以上所解出的DTMF字元相同) 判定此DTMF字元为有效,并且认定为DTMF系统 else 先暂存此字元留待下个frame再比较一次else if(1200Hz频 <dp n="d6"/> 谱远比其他频谱强) if(前一组或连续一组以上的frame亦是)认定为Bell 202的 FSK系统关掉DTMF解码器,启动FSK解码器 else 记录已收到一个1200Hz的frame,下个frame再比一次 else if(1300Hz频谱远比其他频谱强) if(前一组或连续一组以上frame亦是) 认定为V.23的FSK系统 关掉DTMF解码器,启动FSK解码器 else 记录已收到一个1300Hz的frame,下个frame再比一次 } endif } endif endif }/*forever loop*/
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CN 00109720 CN1194523C (zh) | 2000-06-30 | 2000-06-30 | 双制式来方电话显示的预先自动判别装置 |
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CN 00109720 CN1194523C (zh) | 2000-06-30 | 2000-06-30 | 双制式来方电话显示的预先自动判别装置 |
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CN1331541A true CN1331541A (zh) | 2002-01-16 |
CN1194523C CN1194523C (zh) | 2005-03-23 |
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CN 00109720 Expired - Fee Related CN1194523C (zh) | 2000-06-30 | 2000-06-30 | 双制式来方电话显示的预先自动判别装置 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100452817C (zh) * | 2004-04-27 | 2009-01-14 | 三星电子株式会社 | 能够自动检测主叫识别信息的图像形成装置及其检测方法 |
CN101895650A (zh) * | 2010-07-21 | 2010-11-24 | 广州中道电子科技有限公司 | 一种集成型接入服务器系统及其实现方法 |
CN101299782B (zh) * | 2008-05-22 | 2011-09-21 | 杭州华三通信技术有限公司 | 一种检测双音频信号的方法和装置 |
CN102209161A (zh) * | 2011-05-27 | 2011-10-05 | 福建联迪商用设备有限公司 | 电话pos的来电显示消息解码方法 |
-
2000
- 2000-06-30 CN CN 00109720 patent/CN1194523C/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100452817C (zh) * | 2004-04-27 | 2009-01-14 | 三星电子株式会社 | 能够自动检测主叫识别信息的图像形成装置及其检测方法 |
CN101299782B (zh) * | 2008-05-22 | 2011-09-21 | 杭州华三通信技术有限公司 | 一种检测双音频信号的方法和装置 |
CN101895650A (zh) * | 2010-07-21 | 2010-11-24 | 广州中道电子科技有限公司 | 一种集成型接入服务器系统及其实现方法 |
CN101895650B (zh) * | 2010-07-21 | 2012-07-04 | 广州中道电子科技有限公司 | 一种集成型接入服务器系统及其实现方法 |
CN102209161A (zh) * | 2011-05-27 | 2011-10-05 | 福建联迪商用设备有限公司 | 电话pos的来电显示消息解码方法 |
CN102209161B (zh) * | 2011-05-27 | 2013-11-20 | 福建联迪商用设备有限公司 | 电话pos的来电显示消息解码方法 |
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Publication number | Publication date |
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CN1194523C (zh) | 2005-03-23 |
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Owner name: LINGTONG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LINGYANG SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20130123 |
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