公开(公告)号：US5555300A

公开(公告)日：1996-09-10

申请号：US206944

申请日：1994-03-07

申请人： Howard A. Gutzmer

发明人： Howard A. Gutzmer

IPC分类号： H04M1/215 ,  H04M1/60 ,  H04M11/06 ,  H04M11/00

CPC分类号： H04M11/06 ,  H04M1/215 ,  H04M1/6008

摘要： A system for automatically adjusting the level of a telephone instrument microphone input signal in response to the level of the telephone instrument sidetone signal. The system may provide a test signal to the handset microphone input and receive the sidetone signal that corresponds to the test signal from the handset speaker output. A signal processor may then measure the amount of distortion present in the sidetone. If the amount of distortion is below a predetermined threshold, the level of the test signal is increased by a predetermined increment by adjusting an attenuation or amplification factor, and the amount of distortion in the sidetone is again measured. These steps are repeated until the measured distortion exceeds the threshold. The level of the test signal is then decreased by a predetermined amount. The final test signal thus has a level that maximizes the microphone input signal level with an acceptable minimum of distortion. The test signal is then automatically disconnected and a signal produced by an external device, such as a modem, is automatically connected. The selected attenuation factor is thus applied to the signal produced by the external device.

摘要翻译： 一种用于响应于电话仪器侧音信号的电平自动调节电话乐器麦克风输入信号的电平的系统。 系统可以向手机麦克风输入提供测试信号，并接收对应于来自手机扬声器输出的测试信号的侧音信号。 然后，信号处理器可以测量出现在侧音中的失真量。 如果失真量低于预定阈值，则通过调整衰减或放大系数将测试信号的电平增加预定的增量，再次测量侧音中的失真量。 重复这些步骤，直到测量的失真超过阈值。 然后将测试信号的电平减小预定量。 因此，最终测试信号具有使麦克风输入信号电平最大化的水平，具有可接受的最小失真。 然后测试信号自动断开，并且由外部设备（如调制解调器）产生的信号自动连接。 因此，所选择的衰减因子被应用于由外部设备产生的信号。

公开(公告)号：US5455859A

公开(公告)日：1995-10-03

申请号：US345947

申请日：1994-11-28

申请人： Howard A. Gutzmer

发明人： Howard A. Gutzmer

IPC分类号： H04M9/00

CPC分类号： H04M9/005

摘要： An interface between a telephone handset and an external device having both data and audio inputs and outputs, such as a voice-over-data modem, allows a user to speak and listen through the handset of the telephone instrument. The interface also allows a voice-over-data modem to be connected to a PBX-type telephone system. The interface includes a filter circuit that allows the audio-frequency signal generated by the handset microphone to pass through to the external device while blocking DC along that path. The circuit also allows the DC bias voltage provided by the telephone base to pass through to the handset microphone while blocking audio-frequency signals on that path. The interface may also include a switching circuit that forms direct electrical connections between the telephone handset and the telephone base when the external device is not in a mode in which it can communicate data, e.g., when a voice-over-data modem is in an on-hook state.

摘要翻译： 电话听筒和具有数据和音频输入和输出的外部设备之间的接口，例如数据通话调制解调器，允许用户通过电话乐器的手机通话和收听。 该接口还允许将语音数据调制解调器连接到PBX型电话系统。 该接口包括滤波器电路，其允许手机麦克风产生的音频信号通过外部设备，同时沿着该路径阻断DC。 该电路还允许由电话底座提供的直流偏置电压通过手机麦克风，同时阻挡该路径上的音频信号。 接口还可以包括切换电路，当外部设备不处于其可以传送数据的模式时，例如当数据话音转换器处于 挂机状态。

公开(公告)号：US5134649A

公开(公告)日：1992-07-28

申请号：US585930

申请日：1990-09-21

申请人： Howard A. Gutzmer

发明人： Howard A. Gutzmer

IPC分类号： H04M1/215 ,  H04M11/06

CPC分类号： H04M11/066 ,  H04M1/2155

摘要： A data coupler is disclosed for use in connecting a high speed data modem to a typical telephone handset in a high ambient acoustic noise field. The data coupler features a method for conserving, through a magnetic detection process, the high signal to noise ratio (HSNR) available at the telephone line during the acoustic coupling process. The use of magnetic detection prevents the deterioration of acoustic SNR normally expected in a high ambient acoustic noise field.

摘要翻译： 公开了一种用于在高环境声学噪声场中将高速数据调制解调器连接到典型电话听筒的数据耦合器。 数据耦合器具有一种通过磁检测过程节省在声耦合过程中在电话线可用的高信噪比（HSNR）的方法。 磁检测的使用防止在高环境声学噪声场中通常预期的声SNR的恶化。

公开(公告)号：USD312627S

公开(公告)日：1990-12-04

申请号：US207433

申请日：1988-06-16

申请人： Howard A. Gutzmer

设计人： Howard A. Gutzmer

公开(公告)号：US4907267A

公开(公告)日：1990-03-06

申请号：US207208

申请日：1988-06-16

申请人： Howard A. Gutzmer

发明人： Howard A. Gutzmer

IPC分类号： H04M1/215

CPC分类号： H04M1/215

摘要： An apparatus for connecting a telecommunications device, such as a computer or facsimile machine modem, to a telephone line via a telephone set. The telephone set includes a base and a handset connected to the base by a handset cord. The handset cord has at one end a handset plug and the base has a base jack for receiving the handset plug. The apparatus selectively electrically couples one of the handset and the telecommunications device to the base. The apparatus includes a first plug for electrically coupling with the base jack, a first jack for electrically coupling with the handset plug, and the second jack for electrically coupling with the telecommunications device connecting plug. A switch, manually selectable between a first position and a second position, electrically couples the first plug with the first jack when in the first position. A converter is coupled to the switch and the second jack such that when the switch second position is selected, the switch electrically interfacing the first plug with the second jack.

摘要翻译： 一种用于通过电话机将诸如计算机或传真机调制解调器之类的电信设备连接到电话线路的设备。 电话机包括通过听筒线连接到基座的基座和手机。 手机线的一端是手机插头，底座具有用于接收手机插头的基座插孔。 该设备选择性地将手机和电信设备之一电耦合到基座。 该装置包括用于与基座插座电耦合的第一插头，用于与手机插头电连接的第一插座和用于与电信设备连接插头电耦合的第二插座。 在第一位置和第二位置之间可手动选择的开关在处于第一位置时将第一插头与第一插座电耦合。 A转换器耦合到开关和第二插孔，使得当选择开关第二位置时，开关将第一插头与第二插孔电接口。