公开(公告)号：US10165355B2

公开(公告)日：2018-12-25

申请号：US15100063

申请日：2013-12-28

Applicant: Intel Corporation

Inventor： Indira Negi ,  Lakshman Krishnamurthy ,  Brian K. Vogel ,  Darren S. Crews ,  Sai Hemachandra Vemprala ,  Xiaochao Yang ,  Howard D. Millett ,  Alexander Essaian ,  Alanson P. Sample

IPC: G06F17/00 ,  H04R3/00 ,  H04R1/10 ,  H04M1/60 ,  G10L19/00 ,  H04Q1/54

Abstract: A system and method for data transmission and power supply capability over an audio jack for mobile devices are disclosed. A particular embodiment includes: a peripheral device including an energy storage component, a microphone using a microphone bias voltage, and a select switch configured to provide a first switch position wherein charging of the energy storage component using the microphone bias voltage via the microphone conductor is enabled, the select switch being configured provide a second switch position wherein charging of the energy storage component using the microphone bias voltage via the microphone conductor is disabled; and a mobile device and an application (app) executable in the mobile device to produce a switching tone on the audio signal conductor of the audio jack, the switching tone causing the select switch to transition to the first switch position or the second switch position.

公开(公告)号：US5592545A

公开(公告)日：1997-01-07

申请号：US484677

申请日：1995-06-07

Applicant: Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

Inventor： Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

IPC: H04Q1/54 ,  H03G3/20 ,  H03G5/00 ,  H03G5/22 ,  H04M1/60 ,  H04M3/00 ,  H04M3/40 ,  H04M9/00 ,  H04Q1/56 ,  H04M7/00

CPC classification number: H04M3/40 ,  H03G5/22 ,  H04M3/002

Abstract: A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120)includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least one switch (124) or (126). Network (120) also includes voice enhancer (10) including power averager (18) for measuring and determining the average power of an input signal. Voice enhancer (10) also includes bass band equalizer (16) to attenuate a predetermined portion of the input signal to provide an equalized input signal. From the average power of the input signal is determined a scaling factor from a gain/attenuation look-up table (28). Voice enhancer (10) also includes output scaler (30) coupled to output (14), output scaler (30) scales the equalized input signal with the scaling factor and provides the scaled signal to output (14). Voice enhancer (10) also includes bass to treble power comparator (20) for detecting tandem enhancement and voice-band data detector (22) which cause enhancer (10) to be disabled appropriately.

Abstract translation: 电信网络（120）在网络（120）中提供语音信号的自适应增益控制（AGC）。 网络（120）包括用于接收语音信号的输入（12），用于接收语音信号的输出（14）以及输入（12）和输出（14）之间的耦合，包括至少一个开关（124）或 126）。 网络（120）还包括语音增强器（10），包括用于测量和确定输入信号的平均功率的功率平均器（18）。 语音增强器（10）还包括低音段均衡器（16），以衰减输入信号的预定部分以提供均衡的输入信号。 从输入信号的平均功率确定来自增益/衰减查找表（28）的缩放因子。 语音增强器（10）还包括耦合到输出（14）的输出缩放器（30），输出缩放器（30）用缩放因子对均衡的输入信号进行缩放，并将缩放的信号提供给输出（14）。 语音增强器（10）还包括用于检测串联增强的高音功率比较器（20）的低音和使得增强器（10）被适当地禁用的语音频带数据检测器（22）。

公开(公告)号：US4276639A

公开(公告)日：1981-06-30

申请号：US25585

申请日：1979-03-30

Applicant: Takeo Fukuda ,  Tadashi Murayama ,  Kiyoshi Urui

Inventor： Takeo Fukuda ,  Tadashi Murayama ,  Kiyoshi Urui

IPC: H04M3/42 ,  H04M3/56 ,  H04M19/00 ,  H04Q1/54 ,  H04Q3/58 ,  H04Q11/04

CPC classification number: H04M3/561 ,  H04M3/56 ,  H04Q11/04

Abstract: A telephone exchange comprises a plurality of central office trunk circuits, a plurality of line circuits, a plurality of switching circuits coupled to transmission paths of the trunk and line circuits, a plurality of switching circuits coupled to the reception paths of the trunk and line circuits, a variable attenuator having one end coupled commonly to the switching circuits that are coupled to the transmission path, a conference circuit coupled to the variable attenuator and the switching circuits that are coupled to the reception paths, a control circuit which controls both groups of switching circuits and the variable attenuator in time-sharing fashion thereby to provide speech paths in time-sharing fashion between selected ones of the central office trunk circuits and line circuits and which controls in time-sharing fashion the attenuation factor of the variable attenuator for each speech path established. The telephone exchange further comprises another variable attenuator which is coupled between the conference circuit and the switching circuits coupled to the reception paths and whose attenuation factor is controlled by the control circuit in time-sharing fashion.

Abstract translation: 电话交换机包括多个中心局干线电路，多条线路电路，耦合到干线和线路电路的传输路径的多个开关电路，耦合到干线和线路电路的接收路径的多个开关电路 ，可变衰减器，其一端共同耦合到耦合到传输路径的开关电路，耦合到可变衰减器的会议电路和耦合到接收路径的开关电路;控制电路，其控制两组开关 电路和可变衰减器，从而在中央办公室中继电路和线路电路的选定中间电路和线路电路之间以时分方式提供语音路径，并且以时分方式控制每个语音的可变衰减器的衰减因子 路径建立。 电话交换机还包括另一个可变衰减器，其耦合在会议电路和耦合到接收路径的开关电路之间，并且其衰减因子由时间分配的方式由控制电路控制。

公开(公告)号：US20170034618A1

公开(公告)日：2017-02-02

申请号：US15100063

申请日：2013-12-28

Applicant: Indira Negi ,  Lakshman Krishnamurthy ,  Brian K. Vogel ,  Darren S. Crews ,  Sai Hemachandra Vemprala ,  Xiaochao Yang ,  Howard D. Millett ,  Alexander Essaian ,  Alanson P. Sample

Inventor： Indira Negi ,  Lakshman Krishnamurthy ,  Brian K. Vogel ,  Darren S. Crews ,  Sai Hemachandra Vemprala ,  Xiaochao Yang ,  Howard D. Millett ,  Alexander Essaian ,  Alanson P. Sample

IPC: H04R3/00 ,  H04Q1/54 ,  H04M1/60 ,  H04R1/10 ,  G10L19/00

CPC classification number: H04R3/00 ,  G10L19/00 ,  H04M1/6058 ,  H04Q1/54 ,  H04Q2213/034 ,  H04R1/1025 ,  H04R1/1041

Abstract: A system and method for data transmission and power supply capability over an audio jack for mobile devices are disclosed. A particular embodiment includes: a peripheral device including an energy storage component, a microphone using a microphone bias voltage, and a select switch configured to provide a first switch position wherein charging of the energy storage component using the microphone bias voltage via the microphone conductor is enabled, the select switch being configured provide a second switch position wherein charging of the energy storage component using the microphone bias voltage via the microphone conductor is disabled; and a mobile device and an application (app) executable in the mobile device to produce a switching tone on the audio signal conductor of the audio jack, the switching tone causing the select switch to transition to the first switch position or the second switch position.

Abstract translation: 公开了一种用于移动设备的音频插孔的数据传输和电源供应能力的系统和方法。 具体实施例包括：包括能量存储部件的外围设备，使用麦克风偏置电压的麦克风以及被配置为提供第一开关位置的选择开关，其中通过麦克风导体使用麦克风偏置电压对能量存储部件的充电是 被配置的选择开关提供第二开关位置，其中禁用通过麦克风导体使用麦克风偏置电压对能量存储部件的充电; 以及在移动设备中可执行的移动设备和应用（app），以在音频插孔的音频信号导体上产生切换音，该切换音使得选择开关转换到第一开关位置或第二开关位置。

公开(公告)号：US20050156664A1

公开(公告)日：2005-07-21

申请号：US10760614

申请日：2004-01-20

Applicant: Torbjorn Randahl ,  Carl-Mikael Johansson ,  Stefan Barkaro ,  Bo Bokinge ,  Lars Karlsson

Inventor： Torbjorn Randahl ,  Carl-Mikael Johansson ,  Stefan Barkaro ,  Bo Bokinge ,  Lars Karlsson

IPC: H03F3/217 ,  H04M1/738 ,  H04M11/06 ,  H04Q1/54

CPC classification number: H03F3/217

Abstract: Line driver arrangement comprising a class-D switching amplifier having a switching frequency for receiving an input transmit signal and outputting an amplified transmit signal and a transformer having a predetermined leakage inductance for receiving the amplified transmit signal and outputting a transform signal as an output transmit signal. The leakage inductance is predetermined for low-pass filtering of the amplified transmit signal. The line driver arrangement reduces the number of additional discrete inductances, capacitances and or resistor for forming low-pass filters significantly. The inventive line driver arrangement is particularly power-efficient due to the included class-D switching amplifier. The predetermined leakage inductance leads to a suppression of a resonance due to the switching frequency of the class-D amplifier in the power spectral density. Hence, the inventive line driver arrangement complies at least with the ADSL PSD mask requirements.

Abstract translation: 线路驱动器装置，包括具有用于接收输入发射信号并输出​​放大的发射信号的开关频率的D类开关放大器和具有预定的漏电感的变压器，用于接收放大的发射信号并输出​​变换信号作为输出发射信号 。 漏电感对于放大的发射信号的低通滤波是预先确定的。 线路驱动器布置减少了用于形成低通滤波器的附加离散电感，电容和/或电阻的数量。 由于所包括的D类开关放大器，本发明的线路驱动器装置特别省电。 预定的漏电感导致由于D类放大器在功率谱密度中的开关频率而导致的谐振抑制。 因此，本发明的线路驱动器装置至少符合ADSL PSD掩模要求。

公开(公告)号：US4888859A

公开(公告)日：1989-12-26

申请号：US231346

申请日：1988-08-11

Applicant: Yoshiyuki Horita

Inventor： Yoshiyuki Horita

IPC: H04M3/56 ,  A44B19/12 ,  A44B19/32 ,  A44B19/34 ,  H04Q1/54

CPC classification number: A44B19/12 ,  A44B19/32 ,  A44B19/34 ,  Y10T24/2514 ,  Y10T24/2523

Abstract: A water-tight slide fastener is disclosed, which comprises a pair of support tapes each coated on one surface with a water-resistant material and a row of coupling elements mounted on each of the tapes along its longitudinal edge. The spaces or gaps defined in the row of elements being completely filled by a filling core when the latter swells in contact with a liquid to prevent entry of the liquid into a garment to which the fastener is applied.

Abstract translation: 公开了一种防水拉链（10），其包括一对支撑带（11），每个支撑带（11）在一个表面上涂覆有耐水材料（15）和一排连接元件（12），其安装在每个 沿着其纵向边缘的带状物（11），限定在元件行（12）中的空间或间隙（17）当填充芯（16）与液体接触时完全填充以防止液体进入 进入紧固件（10）所施加的衣服。

公开(公告)号：US5471527A

公开(公告)日：1995-11-28

申请号：US161120

申请日：1993-12-02

Applicant: Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

Inventor： Helena S. Ho ,  Michael K. Pratt ,  Pong C. Lim ,  Thomas T. Oshidari

IPC: H04Q1/54 ,  H03G3/20 ,  H03G5/00 ,  H03G5/22 ,  H04M1/60 ,  H04M3/00 ,  H04M3/40 ,  H04M9/00 ,  H04Q1/56 ,  H04M1/00

CPC classification number: H04M3/40 ,  H03G5/22 ,  H04M3/002

Abstract: A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120) includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least one switch (124) or (126). Network (120) also includes voice enhancer (10) including power averager (18) for measuring and determining the average power of an input signal. Voice enhancer (10) also includes bass band equalizer (16) to attenuate a predetermined portion of the input signal to provide an equalized input signal. From the average power of the input signal is determined a scaling factor from a gain/attenuation look-up table (28). Voice enhancer (10) also includes output scaler (30) coupled to output (14), output scaler (30) scales the equalized input signal with the scaling factor and provides the scaled signal to output (14). Voice enhancer (10) also includes bass to treble power comparator (20) for detecting tandem enhancement and voice-band data detector (22) which cause enhancer (10) to be disabled appropriately.

Abstract translation: 电信网络（120）在网络（120）中提供语音信号的自适应增益控制（AGC）。 网络（120）包括用于接收语音信号的输入（12），用于接收语音信号的输出（14）以及输入（12）和输出（14）之间的耦合，包括至少一个开关（124）或 126）。 网络（120）还包括语音增强器（10），包括用于测量和确定输入信号的平均功率的功率平均器（18）。 语音增强器（10）还包括低音段均衡器（16），以衰减输入信号的预定部分以提供均衡的输入信号。 从输入信号的平均功率确定来自增益/衰减查找表（28）的缩放因子。 语音增强器（10）还包括耦合到输出（14）的输出缩放器（30），输出缩放器（30）用缩放因子对均衡的输入信号进行缩放，并将缩放的信号提供给输出（14）。 语音增强器（10）还包括用于检测串联增强的高音功率比较器（20）的低音和使得增强器（10）被适当地禁用的语音频带数据检测器（22）。

公开(公告)号：US5311170A

公开(公告)日：1994-05-10

申请号：US808017

申请日：1991-12-13

Applicant: Hiroyuki Wachi ,  Yoshihiro Ito

Inventor： Hiroyuki Wachi ,  Yoshihiro Ito

IPC: H04J3/00 ,  H04B1/74 ,  H04Q1/54 ,  H04L1/00

CPC classification number: H04B1/74

Abstract: A method is used to switch a channel which is used for a communication between a transmitting end and a receiving end from a main channel to a protection channel. The method of the present invention allows automatic compensation for the loss caused by the switching of the channel to the protection channel. Furthermore, the level difference of the baseband signal outputs from each of the main channels can be automatically controlled to zero regardless of the main channel from which the channel is switched to the protection channel.

Abstract translation: 一种方法用于将用于发送端和接收端之间的通信的信道从主信道切换到保护信道。 本发明的方法允许自动补偿由通道切换到保护通道所引起的损失。 此外，无论从哪个主通道切换到保护通道的主通道，每个主通道的基带信号输出的电平差都可以自动控制为零。

公开(公告)号：US4272648A

公开(公告)日：1981-06-09

申请号：US98110

申请日：1979-11-28

Applicant: Bhagwati P. Agrawal ,  Kishan Shenoi

Inventor： Bhagwati P. Agrawal ,  Kishan Shenoi

IPC: H04B3/04 ,  G06F7/544 ,  H03G3/00 ,  H03G3/02 ,  H03M7/00 ,  H04B3/06 ,  H04Q1/54 ,  H04Q11/04 ,  G06F7/39

CPC classification number: H03M7/3042 ,  G06F7/5443 ,  H03G3/002 ,  H04B3/06 ,  H04Q11/04 ,  H03M7/3026

Abstract: There is disclosed a digital gain control particularly adapted for use with digital signals propagating in a telephone line circuit. The gain control is positioned in the circuit to respond to a digital signal manifesting a plurality of words, each having a given number of bits N and indicative of a weighted value of an analog signal. The digital signal is multiplied by a word coefficient having a number of bits M indicative of a gain factor to be imparted to the digital signal. A product signal is provided containing M+N bits. The least significant bits are removed to provide an output signal of N bits possessing the desired gain. The discarded bits are employed via a feedback loop and are added to the next word product, which is then used to provide a next output signal. The feedback loop assures that each output signal is a close approximation to the input signal as gain controlled by the desired gain factor.

Abstract translation: 公开了一种特别适用于在电话线电路中传播的数字信号的数字增益控制。 增益控制位于电路中以响应表示多个字的数字信号，每个字具有给定数量的位N并且指示模拟信号的加权值。 数字信号乘以具有指示要赋予数字信号的增益因子的位数M的字系数。 提供包含M + N位的产品信号。 去除最低有效位以提供具有期望增益的N位的输出信号。 丢弃的比特通过反馈回路采用，并被添加到下一个词产品，然后用于提供下一个输出信号。 反馈回路确保每个输出信号与输入信号近似近似于由所需增益因子控制的增益。

公开(公告)号：US4254305A

公开(公告)日：1981-03-03

申请号：US9992

申请日：1979-02-07

Applicant: Robert Treiber

Inventor： Robert Treiber

IPC: H04Q3/42 ,  H04M3/02 ,  H04M19/00 ,  H04Q1/54 ,  H04B3/36

CPC classification number: H04M19/008

Abstract: The present invention discloses a reduced power dissipation telephone subscriber line feed circuit in which the battery feed current from the central office is determined by the subscriber loop resistance for medium to long loops, and for shorter loops, for which the battery feed current would exceed a given predetermined threshold, the feed current is limited to the threshold value. The invention also relates to compensation for loop and subset attenuation characteristics.During operation in the current limited mode, attenuation is automatically inserted into the signal transmission and receiving paths in order that normal equalizer operation will not be impaired by current limiting of the battery feed current. A multiple telephone subscriber system is disclosed wherein the circuitry used in deriving current limiting control signals is shared in a multiplexed arrangement by a plurality of subscriber lines. Line feed current is limited in discrete steps to a predetermined threshold value in each subscriber loop upon the detection of an OFF HOOK condition when the feed current drawn by the subset exceeds the threshold value. A plurality of discrete signals are derived by sensing the amount by which the line voltages exceeds a predetermined selected reference voltage value. These discrete signals are used to determine both the effective battery voltage which will produce a d.c. feed current corresponding to the limiting value and the amount of attenuation to be added at the central office by the line circuit to compensate for the equalizer effect in the subscriber set which occurs as a result of the current limiting.

Abstract translation: 本发明公开了一种降低功耗的电话用户线路馈电电路，其中来自中心局的电池馈电电流由用于中长环路的用户回路电阻以及电池馈电电流将超过 给定预定阈值时，馈送电流被限制到阈值。 本发明还涉及对环路和子集衰减特性的补偿。 在当前限制模式下工作时，衰减自动插入到信号传输和接收路径中，以便通过限制电池馈电电流不会损害正常的均衡器操作。 公开了一种多电话用户系统，其中用于导出电流限制控制信号的电路由多个用户线以多路复用的方式共享。 当由子集抽取的馈送电流超过阈值时，在检测到OFF HOOK条件时，线路馈电电流以离散步长限制到每个用户环路中的预定阈值。 通过感测线电压超过预定的选定参考电压值的量导出多个离散信号。 这些离散信号用于确定将产生直流电压的有效电池电压。 馈送电流对应于由线路电路在中心局添加的限制值和衰减量，以补偿由于电流限制而发生的用户组中的均衡器效应。