Supervising circuit
专利汇可以提供Supervising circuit专利检索，专利查询，专利分析的服务。并且PURPOSE: To detect the off-hooking of the subscriber without being influenced by the same phase noise by outputting respective supervising signals when the electric current of an A line and a B line is comparatively small threshold or above and the sum of both electric currents is a comparatively large threshold or above.
CONSTITUTION: By transistors Qa and Qb controlled by feeding control circuits BC
1 and BC
2 , electric currents IA, IB are supplied a line load resistance RL through an A line and a B line. By resistances Re
l and Re
2 , electric currents IA and IB are detected, and compared with comparatively small thresholds Vth
1 and Vth
2 by comparators CMP
1 and CMP
2 . The sum of the electric currents IA and IB is compared with a comparatively large threshold Vth
3 by a comparing circuit CMP
3 . By gate circuits G
1 and G
2 , the AND of the output of a comparing circuit CMP
3 and the output of the comparing circuits CMP
1 and CMP
2 is obtained, and supervising signals SCNA and SCNB of the A line and the B line are obtained. Then, even when the value of the electric currents IA and IB is changed by the same phase noise, the supervising signal will not alternately stop.
COPYRIGHT: (C)1987,JPO&Japio，下面是Supervising circuit专利的具体信息内容。
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 基于最大后验准则的毫米波系统双端相位噪声抑制方法 | 2020-05-11 | 566 |
| 推推介质振荡器 | 2020-05-12 | 800 |
| 零差相干探测中宽范围快调谐三级复合轴锁相方法及结构 | 2020-05-11 | 108 |
| 用于测量闪烁噪声的电路及其使用方法 | 2020-05-12 | 918 |
| 一种低相位噪声中频振荡信号产生电路及方法 | 2020-05-08 | 730 |
| 一种通信方法及装置 | 2020-05-08 | 50 |
| 一种低相位噪声抗振型晶体振荡器 | 2020-05-12 | 466 |
| 频率基准振荡器设备和稳定频率基准信号的方法 | 2020-05-08 | 760 |
| 一种高动态输入的MEMS陀螺带宽扩展闭环控制方法 | 2020-05-11 | 393 |
| 无线通信系统中分配相位跟踪参考信号的方法和装置 | 2020-05-12 | 214 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
