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1. 发明专利

JPS58187047A Frequency shift modulating circuit 失效
标题翻译：频率转换调制电路
公开(公告)号：JPS58187047A
公开(公告)日：1983-11-01
申请号：JP6998982
申请日：1982-04-26
申请人： Nec Corp
发明人： KUROSAKI ISAMU
IPC分类号： H04L27/12
CPC分类号： H04L27/122
摘要： PURPOSE:To obtain a frequency shift modulation signal not limiting the instantaneous performance of data communication, by performing stop and start of the oscillation when the polarity of oscillation output voltage of a frequency shift mosulator is converted into positive or negative polarity. CONSTITUTION:A switch S4 is opened at the 1st rising time point of an oscillation output voltage e2 of a frequency shift modulator 1 after a control signal voltage e3 of a gate circuit 3 goes to zero, and an output signal voltage e4 is outputted according to the gain of a negative feedback amplifier 32. Switches S3-S1 are opened at the 2nd - the 4th rising time point of the voltage e2 to increase the gain of the amplifier 32 sequentially. When the voltage e3 is inverted to 1, the switches S1-S4 are conductive at the 1st - the 4th rising time point to synchronize the voltage e2 to the rising time point with the characteristic frequency corresponding to the input signal voltage e1 and to reduce the gain of the amplifier 32 sequentially, allowing to stop the transmission to the output terminal.
摘要翻译：目的：为了获得不限制数据通信的瞬时性能的频移调制信号，通过在频移振荡器的振荡输出电压的极性被转换为正极性或负极性时，通过停止和起动振荡。构成：在门电路3的控制信号电压e3变为零之后，在频移调制器1的振荡输出电压e2的第1上升时间点开关S4，根据输入信号电压e4输出负反馈放大器32的增益。开关S3-S1在电压e2的第二 - 第四上升时间点断开，以依次增加放大器32的增益。当电压e3反转为1时，开关S1-S4在第1个到第4个上升时间点导通，以使电压e2与上升时间点同步，其特征频率对应于输入信号电压e1，顺序地放大放大器32的增益，允许停止对输出端子的传输。

2. 发明专利

JPS59117355A Remote test system of data modulating and demodulating device 失效
标题翻译：数据调制和解调设备的远程测试系统
公开(公告)号：JPS59117355A
公开(公告)日：1984-07-06
申请号：JP22487782
申请日：1982-12-23
申请人： Nec Corp
发明人： KUROSAKI ISAMU
IPC分类号： H04L5/16 , H04B17/00 , H04L1/24 , H04L25/02 , H04L29/14
CPC分类号： H04L1/243
摘要： PURPOSE:To attain the remote test of a two-wire system line by transmitting a test start and end signal from a test station to a station to be tested to control a test code generator of the station to be tested in the remote test system of a data modulating and demodulating device of the 2-wire system line. CONSTITUTION:The test start signal is generated at the modulating and demodulating device 5 of a test station. This start signal passes through the 2-wire system line 7 and is detected by a test device 63 via a demodulator 62 of the station 6 to be tested. When the device 63 detects the start signal, the test code generator in the device 63 generates a test code. This test code is transmitted to the modulating and demodulating device 5 of the test station and also reflected to a demodulator 61 of the own station. The test device 53 in the modulating and demodulating device 5 of the test station monitors the test code. The test device 63 of the station to be tested monitors the reflected test code and stops the generation of the test code by detecting the increase of the error in the folded test code by the test end code from the test station.
摘要翻译：目的：通过将测试开始和结束信号从测试台传输到要测试的站点，以便在远程测试系统中测试的测试站的测试代码生成器来实现两线制系统的远程测试 2线系统线路的数据调制解调装置。构成：在测试台的调制和解调装置5处产生测试开始信号。该起始信号通过2线制系统线路7，经被测站台6的解调器62被测试装置63检测。当设备63检测到启动信号时，设备63中的测试代码生成器生成测试代码。该测试码被发送到测试台的调制和解调设备5，并且也被反射到本台的解调器61。测试台的调制和解调装置5中的测试装置53监视测试代码。待测试站的测试设备63通过检测来自测试台的测试结束代码来检测折叠测试代码中的错误的增加来监视反射的测试代码并停止生成测试代码。

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