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1. 发明申请

US20060115076A1 Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections 有权
公开(公告)号：US20060115076A1
公开(公告)日：2006-06-01
申请号：US11295901
申请日：2005-12-07
申请人： Leonel Enriquez , Douglas Youngblood , Edward Berrios
发明人： Leonel Enriquez , Douglas Youngblood , Edward Berrios
IPC分类号： H04M1/00
CPC分类号： H04M3/005 , H04M1/7385
摘要： A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog section. An input signal receiving unit of the high voltage analog section conditions input voice and low voltage signaling and ringing signals from the mixed signal section, for application to a dual mode, programmable gain, tip/ring amplifier coupled to the loop. A sense amplifier at the output of the tip/ring amplifier is through an auxiliary amplifier to an analog feedback monitor port for closing a loop to synthesize the circuit's output impedance.

2. 发明申请

US20060088155A1 Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit 失效
公开(公告)号：US20060088155A1
公开(公告)日：2006-04-27
申请号：US11295883
申请日：2005-12-07
申请人： Leonel Enriquez , Douglas Youngblood
发明人： Leonel Enriquez , Douglas Youngblood
IPC分类号： H04M1/00
CPC分类号： H04M1/7385 , H04M3/005 , H04M19/00
摘要： A mode-dependent, battery-coupling switch for a subscriber line interface circuit (SLIC) selectively adjusts its current requirements to provide optimal current handling capability irrespective of the mode of operation of the SLIC. Where current demands of the SLIC are relatively minimal (e.g., on-hook idle mode), the bias is set at a relatively small, default value. During high current demand, such as ringing and off-hook signaling, the bias is set at a relatively large value, to maintain a low voltage drop across the battery-coupling switch.

3. 发明授权

US07260214B2 Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections 有权
标题翻译：可编程用户线路电路分为高压接口和数字控制子部分
公开(公告)号：US07260214B2
公开(公告)日：2007-08-21
申请号：US11295901
申请日：2005-12-07
申请人： Leonel Ernesto Enriquez , Douglas Youngblood , Edward A. Berrios
发明人： Leonel Ernesto Enriquez , Douglas Youngblood , Edward A. Berrios
IPC分类号： H04M1/00 , H04M9/00 , H04M9/08
CPC分类号： H04M3/005 , H04M1/7385
摘要： A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog section. An input signal receiving unit of the high voltage analog section conditions input voice and low voltage signaling and ringing signals from the mixed signal section, for application to a dual mode, programmable gain, tip/ring amplifier coupled to the loop. A sense amplifier at the output of the tip/ring amplifier is through an auxiliary amplifier to an analog feedback monitor port for closing a loop to synthesize the circuit's output impedance.
摘要翻译：用户线接口电路具有电池供电的高电压模拟部分，其驱动用户回路的尖端和环形线，以及混合信号（低电压和数字信号处理）部分，其监视和控制高压模拟部分。高压模拟部分的输入信号接收单元输入来自混合信号部分的语音和低电压信号和振铃信号，以应用于耦合到该环路的双模式，可编程增益，尖端/环形放大器。尖端/环形放大器输出端的读出放大器通过一个辅助放大器到一个模拟反馈监视端口，用于闭合一个回路以合成电路的输出阻抗。

4. 发明申请

US20070132501A1 Method And Apparatus For Switching Audio And Data Signals Through A Single Terminal 有权
标题翻译：用于通过单个终端切换音频和数据信号的方法和装置
公开(公告)号：US20070132501A1
公开(公告)日：2007-06-14
申请号：US11419620
申请日：2006-05-22
申请人： Donald Koch , Douglas Youngblood , Christopher Ludeman
发明人： Donald Koch , Douglas Youngblood , Christopher Ludeman
IPC分类号： H03K17/00
CPC分类号： H03K17/063 , H03K17/005 , H03K17/6871
摘要： A MOSFET-based, multi signal-switching circuit controllably passes analog/audio signals and digital signals through a common terminal to a single connector. Analog/audio signals are coupled through a single N-channel MOSFET analog signal switch which, when turned-ON, minimizes distortion of the analog/audio signal and capacitive loading to an adjacent, MOS-based or CMOS-based digital data signal switch. A respective turn-OFF circuit maintains its associated switch MOSFET turned OFF.
摘要翻译：基于MOSFET的多信号切换电路可控制地将模拟/音频信号和数字信号通过公共端子传递到单个连接器。模拟/音频信号通过单个N沟道MOSFET模拟信号开关进行耦合，当开启导通时，模拟/音频信号的失真和对相邻的基于MOS或基于CMOS的数字信号开关的电容负载最小化。相应的关断电路将其关联的开关MOSFET保持关闭。

5. 发明授权

US07260103B2 Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit 失效
标题翻译：模式相关，用于用户线接口电路的多偏压驱动电池开关
公开(公告)号：US07260103B2
公开(公告)日：2007-08-21
申请号：US11295883
申请日：2005-12-07
申请人： Leonel Ernesto Enriquez , Douglas Youngblood
发明人： Leonel Ernesto Enriquez , Douglas Youngblood
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M1/7385 , H04M3/005 , H04M19/00
摘要： A mode-dependent, battery-coupling switch for a subscriber line interface circuit (SLIC) selectively adjusts its current requirements to provide optimal current handling capability irrespective of the mode of operation of the SLIC. Where current demands of the SLIC are relatively minimal (e.g., on-hook idle mode), the bias is set at a relatively small, default value. During high current demand, such as ringing and off-hook signaling, the bias is set at a relatively large value, to maintain a low voltage drop across the battery-coupling switch.
摘要翻译：用于用户线接口电路（SLIC）的模式相关的电池耦合开关选择性地调整其当前要求以提供最佳的电流处理能力，而与SLIC的操作模式无关。在SLIC的当前需求相对较小（例如，挂机空闲模式）的情况下，偏置被设置为相对较小的默认值。在高电流需求（例如振铃和摘机信号）期间，将偏压设置在相对较大的值，以保持电池耦合开关两端的低压降。

6. 发明授权

US07050577B2 Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections 有权
公开(公告)号：US07050577B2
公开(公告)日：2006-05-23
申请号：US10091976
申请日：2002-03-06
申请人： Leonel Ernesto Enriquez , Douglas Youngblood , Edward A. Berrios
发明人： Leonel Ernesto Enriquez , Douglas Youngblood , Edward A. Berrios
IPC分类号： H04M1/00 , H04M9/00 , H04M9/08
CPC分类号： H04M3/005 , H04M1/7385
摘要： A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog section. An input signal receiving unit of the high voltage analog section conditions input voice and low voltage signaling and ringing signals from the mixed signal section, for application to a dual mode, programmable gain, tip/ring amplifier coupled to the loop. A sense amplifier at the output of the tip/ring amplifier is through an auxiliary amplifier to an analog feedback monitor port for closing a loop to synthesize the circuit's output impedance.

7. 发明授权

US07130414B2 Active mode line voltage regulator for ringing subscriber line interface circuit 有权
公开(公告)号：US07130414B2
公开(公告)日：2006-10-31
申请号：US10090291
申请日：2002-03-04
申请人： Leonel Ernesto Enriquez , Douglas Youngblood
发明人： Leonel Ernesto Enriquez , Douglas Youngblood
IPC分类号： H04M19/00
CPC分类号： H04M19/005 , H04M1/745
摘要： A voltage regulator circuit arrangement limits the DC voltage applied to a tip and ring amplifiers of a subscriber line interface circuit (SLIC), each of which has a first polarity input coupled to a first current flow path to which a DC input (battery) voltage is coupled. A first current source supplies a first current derived via a low pass filter path from that flowing through the first current flow path to a second polarity input node of the tip amplifier, while a second current source supplies a similarly low pass filter path-derived second current to a second polarity input node of the ring amplifier. A voltage regulator is coupled with the first current flow path and is operative to regulate the voltage at the first polarity inputs of the tip and ring amplifiers to a regulated voltage value Vreg, so that the magnitudes of the first and second currents are based upon the regulated voltage value Vreg.

8. 发明授权

US07003103B2 Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit 失效
公开(公告)号：US07003103B2
公开(公告)日：2006-02-21
申请号：US10177706
申请日：2002-06-21
申请人： Leonel Ernesto Enriquez , Douglas Youngblood
发明人： Leonel Ernesto Enriquez , Douglas Youngblood
IPC分类号： H04M1/00 , H04M9/00 , H04M9/08
CPC分类号： H04M1/7385 , H04M3/005 , H04M19/00
摘要： A mode-dependent, battery-coupling switch for a subscriber line interface circuit (SLIC) selectively adjusts its current requirements to provide optimal current handling capability irrespective of the mode of operation of the SLIC. Where current demands of the SLIC are relatively minimal (e.g., on-hook idle mode), the bias is set at a relatively small, default value. During high current demand, such as ringing and off-hook signaling, the bias is set at a relatively large value, to maintain a low voltage drop across the battery-coupling switch.

9. 发明申请

US20060028276A1 CMOS-configured transconductance amplifier circuit 失效
公开(公告)号：US20060028276A1
公开(公告)日：2006-02-09
申请号：US10910704
申请日：2004-08-03
申请人： Douglas Youngblood
发明人： Douglas Youngblood
IPC分类号： H03F3/18
CPC分类号： H03F3/45085 , H03F1/34 , H03F3/4508 , H03F3/45098 , H03F3/45475 , H03F2203/45288 , H03F2203/45356
摘要： A CMOS-implemented transconductance amplifier has an input gain stage coupled to a CMOS output stage. The inverting input of the input gain stage is coupled to an input/output port to which an input voltage is coupled. The CMOS output stage has a first, transconductance CMOS transistor pair, whose source-drain paths are series-coupled between first and second outputs of the input stage. A second, transimpedance CMOS transistor pair have their source-drain paths series-coupled between first and second power supply terminals, and gate inputs coupled to outputs of the input stage. A third CMOS transistor pair is coupled in parallel with the second CMOS transistor pair to form a pair of current mirror stages. The current output is coupled to a common connection of the third CMOS pair.

10. 发明申请

US20060008077A1 Speech amplifier-resident mechanism for controllably supplying power to a line circuit 有权
标题翻译：用于可控地向线路电路供电的语音放大器驻留机构
公开(公告)号：US20060008077A1
公开(公告)日：2006-01-12
申请号：US10887935
申请日：2004-07-09
申请人： Douglas Youngblood
发明人： Douglas Youngblood
IPC分类号： H04M9/00
CPC分类号： H04M9/00
摘要： A voltage-coupling and loop current supply mechanism controllably turns on an output transistor within the tip amplifier circuitry portion of the speech amplifier to controllably apply a prescribed voltage to the telephone line during on-hook/standby mode. This controllably applied voltage serves as a source of loop current when the phone goes off-hook. The ring lead portion of the tip/ring wireline pair is connected to a controlled current sink, which is coupled to the output of a voltage regulator referenced to the battery voltage. This controlled current sink is used to sink a prescribed loop current from the tip/ring pair when the phone goes off-hook. When the phone goes off-hook and loop current is detected, the voltage-supply mechanism provided by the tip amplifier's output transistor is terminated, and the speech amplifier is placed in its normal speech amplifier mode.
摘要翻译：电压耦合和回路电流供应机构可控制地打开语音放大器的尖端放大器电路部分内的输出晶体管，以在挂机/待机模式期间可控地将规定的电压施加到电话线路。当手机摘机时，可控制的电压用作回路电流源。尖端/环线电缆对的环形引线部分连接到受控电流吸收器，其被耦合到参考电池电压的电压调节器的输出。当电话摘机时，该受控电流吸收器用于从尖端/环对中吸收规定的回路电流。当检测到手机摘机和回路电流时，由端头放大器的输出晶体管提供的电压供给机构终止，语音放大器处于其正常的语音放大模式。

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