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1. 发明授权

US5825781A Pulse amplitude modulated tone generator 失效
公开(公告)号：US5825781A
公开(公告)日：1998-10-20
申请号：US580023
申请日：1995-12-20
申请人： Winston M. Gadsby , Jeffery M. Davis
发明人： Winston M. Gadsby , Jeffery M. Davis
IPC分类号： H04J3/02 , H04J7/00
CPC分类号： G06F1/022 , G10K15/02
摘要： A tone generating circuit comprises a counter circuit having a clock input for receiving a clock signal and a plurality of outputs which generate sequential binary values in response to transitioning of the clock signal; a multiplexer having several inputs, a number of select lines connected to the counter circuit outputs, and at least one output; and a resistor divider network connected to the multiplexer inputs. The multiplexer select lines select one of the multiplexer inputs in accordance with the binary value received from the counter circuit. The multiplexer inputs are connected to different taps on the resistor divider network. The counter selects multiplexer inputs on the falling edge of the clock signal, while the output signal level transitions before the rising edge of the clock signal.

2. 发明授权

US6160792A Pulse amplitude modulated tone generator 失效
标题翻译：脉冲幅度调制音发生器
公开(公告)号：US6160792A
公开(公告)日：2000-12-12
申请号：US53624
申请日：1998-04-02
申请人： Winston M. Gadsby , Jeffery M. Davis
发明人： Winston M. Gadsby , Jeffery M. Davis
IPC分类号： H04J3/02 , H04J7/00
CPC分类号： G06F1/022 , G10K15/02
摘要： A tone generating circuit comprises a counter circuit having a clock input for receiving a clock signal and a plurality of outputs which generate sequential binary values in response to transitioning of the clock signal; a multiplexer having several inputs, a number of select lines connected to the counter circuit outputs, and at least one output; and a resistor divider network connected to the multiplexer inputs. The multiplexer select lines select one of the multiplexer inputs in accordance with the binary value received from the counter circuit. The multiplexer inputs are connected to different taps on the resistor divider network. The counter selects multiplexer inputs on the falling edge of the clock signal, while the output signal level transitions before the rising edge of the clock signal.
摘要翻译：音调产生电路包括具有用于接收时钟信号的时钟输入的计数器电路和响应于时钟信号的转换而产生顺序二进制值的多个输出; 具有多个输入的多路复用器，连接到计数器电路输出的多个选择线以及至少一个输出; 以及连接到多路复用器输入的电阻分压网络。多路复用器选择线根据从计数器电路接收的二进制值来选择多路复用器输入之一。多路复用器输入连接到电阻分压网络上的不同抽头。计数器在时钟信号的下降沿选择多路复用器输入，而输出信号电平在时钟信号的上升沿之前转变。

3. 发明授权

US06343069B1 Apparatus and method for automatic and adaptive adjustment of build-out capacitance to balance a hybrid 失效
标题翻译：用于自动和自适应调整积分电容以平衡混合的装置和方法
公开(公告)号：US06343069B1
公开(公告)日：2002-01-29
申请号：US08923290
申请日：1997-09-04
申请人： Winston M. Gadsby
发明人： Winston M. Gadsby
IPC分类号： H04M176
CPC分类号： H04M1/76
摘要： An apparatus and method for automatically selecting an amount of build-out capacitance to be applied to a hybrid in a telecommunications circuit to balance or substantially balance the hybrid. The apparatus measures voltages of signals being transmitted on telecommunication lines to which the hybrid is coupled, and based on the measured voltages, automatically selects any number of a plurality of capacitive elements to be coupled to the balance port of the hybrid as the build-out capacitance. The apparatus is further controllable to operate in a manual mode in which the capacitive elements to be coupled to the hybrid are manually selected by switches.
摘要翻译：一种用于自动选择要施加到电信电路中的混合电路的建立电容量以平衡或基本平衡混合电路的装置和方法。该装置测量在混合耦合到的电信线路上传输的信号的电压，并且基于所测量的电压，自动选择要耦合到混合器的平衡端口的多个电容性元件的任何数量作为构建电容。该装置进一步可控制以在手动模式下操作，其中要耦合到混合动力的电容元件由开关手动选择。

4. 发明授权

US5337354A Tip-ring voltage correction circuit 失效
标题翻译：尖环电压校正电路
公开(公告)号：US5337354A
公开(公告)日：1994-08-09
申请号：US921681
申请日：1992-07-30
申请人： Winston M. Gadsby
发明人： Winston M. Gadsby
IPC分类号： H04M3/00 , H04M19/00
CPC分类号： H04M3/005 , H04M19/005
摘要： A correction circuit for use with a subscriber line interface circuit (SLIC) to control the level of a DC voltage supplied to the tip and ring wires of a telephone circuit includes a current sink with a differential operational amplifier. The amplifier output terminal is connected through an output resistor to a control input of the SLIC which influences the DC voltage level. The non-inverting input terminal of the amplifier is connected to the tip or ring wire, or both, and the inverting input terminal is connected to the output resistor and a DC reference circuit. The level of the voltage supplied by the SLIC is a function of the current supplied by the correction circuit.
摘要翻译：与用户线路接口电路（SLIC）一起使用的用于控制提供给电话电路的尖端和环形线的直流电压的电平的校正电路包括具有差分运算放大器的电流吸收器。放大器输出端子通过输出电阻连接到影响直流电压电平的SLIC的控制输入端。放大器的非反相输入端子连接到尖端或环形线或两者，反相输入端子连接到输出电阻和直流参考电路。由SLIC提供的电压的电平是由校正电路提供的电流的函数。

5. 发明授权

US5848127A Two-wire channel unit with loopback test capability 失效
标题翻译：具有环回测试能力的双线通道单元
公开(公告)号：US5848127A
公开(公告)日：1998-12-08
申请号：US633971
申请日：1996-04-19
申请人： Dmitry Levitan , Winston M. Gadsby
发明人： Dmitry Levitan , Winston M. Gadsby
IPC分类号： H04M1/24 , H04M3/08
CPC分类号： H04M3/303 , H04M1/24
摘要： A two-wire channel unit or line card for use in a digital loop carrier (DLC) telephone system is disclosed. The channel unit is provided with a loopback test capability by using relays to open-circuit or short-circuit the input terminals of the hybrid circuit that couples the two-wire subscriber line to the separate two-wire transmit and receive paths within the channel unit. When open-circuited or short-circuited in this manner, the hybrid circuit couples voice frequency test signals between the receive and transmit paths of the channel unit, thereby allowing loopback testing to be carried out without providing a dedicated loss/gain circuit in the channel unit. An additional relay may be provided to vary the gain of an amplifier stage in the transmit or receive path of the channel unit during operation in the loopback test mode, in order to control the overall gain of the channel unit during loopback testing.
摘要翻译：公开了一种用于数字环路载波（DLC）电话系统的双线通道单元或线卡。信道单元通过使用中继器将混合电路的输入端子开路或短路来提供环回测试能力，该混合电路将两线用户线路耦合到信道单元内的单独的二线发送和接收路径。当以这种方式开路或短路时，混合电路将通道单元的接收和发送路径之间的语音频率测试信号相耦合，从而允许执行环回测试，而不在通道中提供专用的损耗/增益电路单元。为了在环回测试期间控制信道单元的总体增益，可以提供附加的继电器来改变在环回测试模式中操作期间信道单元的发送或接收路径中的放大器级的增益。

6. 发明申请

US20110069608A1 System for providing backup programming at radio or television transmitter 审中-公开
标题翻译：用于在无线电或电视发射机上提供备份节目的系统
公开(公告)号：US20110069608A1
公开(公告)日：2011-03-24
申请号：US12585707
申请日：2009-09-22
申请人： Gary M. Miller , Winston M. Gadsby
发明人： Gary M. Miller , Winston M. Gadsby
IPC分类号： H04L1/08 , H04N11/02 , H04N7/173
CPC分类号： H04N21/4341 , H04L1/22 , H04N21/236 , H04N21/2368 , H04N21/2404 , H04N21/8106
摘要： A system transmits backup programming media in a transmitter station being connected to a remote media station. The media station includes a media programming input to receive a source media signal, which includes media programming. The media station further includes an Ethernet programming input that receives an Ethernet media signal including backup media programming being different the media programming. A transmitter station receives the source media signal via a transmission medium and transmits the media programming. The transmitter station further receives the Ethernet media signal and stores the backup media programming in a storage device. A controller detects a fault on a transmission medium connecting the media station and the transmitting station. The controller retrieves the stored backup media programming and generates a backup media signal. A transmitter transmits the backup media programming based on the backup media signal until it is controlled to re-transmit the source media signal.
摘要翻译：系统在连接到远程媒体站的发射台中发送备份编程媒体。媒体站包括用于接收源媒体信号的媒体节目输入，其包括媒体节目。媒体站还包括以太网编程输入，其接收包括媒体节目不同的备份媒体节目的以太网媒体信号。发射台经由传输介质接收源媒体信号并发送媒体节目。发射机站还接收以太网媒体信号，并将备份媒体节目存储在存储装置中。控制器检测连接媒体站和发送站的传输介质上的故障。控制器检索存储的备份媒体编程并生成备份媒体信号。发射机基于备份媒体信号发送备份媒体节目，直到被控制以重新发送源媒体信号为止。

7. 发明授权

US5263081A Method and apparatus for providing on-hook transmission for digital loop carrier channel units 失效
标题翻译：用于为数字环路载波信道单元提供挂机传输的方法和装置
公开(公告)号：US5263081A
公开(公告)日：1993-11-16
申请号：US978025
申请日：1992-11-18
申请人： Roger A. Nightingale , Makan Abousaeedi , Winston M. Gadsby
发明人： Roger A. Nightingale , Makan Abousaeedi , Winston M. Gadsby
IPC分类号： H04Q1/444 , H04Q11/04 , H04M1/00
CPC分类号： H04Q1/444 , H04Q11/0407
摘要： On-hook VF transmission through a channel unit to a subscriber telephone instrument is provided by a control unit which generates control signals for the channel unit. The control unit responds to receipt of an "idle" code by creating commands which establish a VF path through the channel unit regardless of whether the subscriber instrument is on-hook or off-hook.
摘要翻译：通过信道单元向用户电话乐器的挂机VF传输由生成用于信道单元的控制信号的控制单元提供。控制单元通过创建通过通道单元建立VF路径的命令来响应“空闲”代码的接收，而不管用户乐器是挂机还是摘机。

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