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公开(公告)号：US5325396A
公开(公告)日：1994-06-28
申请号：US940662
申请日：1992-09-04
申请人： David N. Critchlow , Moshe Yehushua , Graham M. Avis , Wade L. Heimbigner , Karle J. Johnson , George A. Wiley
发明人： David N. Critchlow , Moshe Yehushua , Graham M. Avis , Wade L. Heimbigner , Karle J. Johnson , George A. Wiley
IPC分类号： H04M1/00 , H03B28/00 , H03C3/00 , H03D3/00 , H04B1/40 , H04B3/00 , H04B7/00 , H04J3/02 , H04L25/03 , H04L27/00 , H04L27/18 , H04L27/20 , H04W84/16 , H03K3/80
CPC分类号： H03D3/007 , H04L27/00 , H04L27/2092 , H03B28/00 , H03C3/00 , H04L2025/03375 , H04L2025/03477
摘要： A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processor chip transcodes a digital voice input signal to provide digital input symbols; demodulates an output signal received from the base station to provide digital output symbols; and synthesizes a digital voice output signal from the digital output symbols. The FIR chip FIR filters the digital input symbols and generates timing signals for timing the transcoding and synthesizing operations in the processor chip. The DIF chip digitally synthesizes a digital intermediate frequency signal by direct digital synthesis (DDS) and modulates the digital intermediate frequency signal with the filtered input symbols to provide a modulated intermediate frequency input signal. The radio further processes the modulated input signal for transmission to the base station.
摘要翻译： 用于与无线用户通信系统中的基站进行无线通信的用户单元包括FIR芯片，DIF（数字中频）芯片，单个处理器芯片和无线电装置。 处理器芯片对数字语音输入信号进行转码以提供数字输入符号; 解调从基站接收的输出信号以提供数字输出符号; 并从数字输出符号合成数字语音输出信号。 FIR芯片FIR对数字输入符号进行滤波，并产生用于对处理器芯片中的代码转换和合成操作进行定时的定时信号。 DIF芯片通过直接数字合成（DDS）数字合成数字中频信号，并用滤波后的输入符号对数字中频信号进行调制，以提供调制中频输入信号。 无线电进一步处理调制的输入信号以传输到基站。
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公开(公告)号：US5008900A
公开(公告)日：1991-04-16
申请号：US394497
申请日：1989-08-14
申请人： David N. Critchlow , Moshe Yehushua , Graham M. Avis , Wade L. Heimbigner , Karle J. Johnson , George A. Wiley
发明人： David N. Critchlow , Moshe Yehushua , Graham M. Avis , Wade L. Heimbigner , Karle J. Johnson , George A. Wiley
IPC分类号： H04M1/00 , H03B28/00 , H03C3/00 , H03D3/00 , H04B1/40 , H04B3/00 , H04B7/00 , H04J3/02 , H04L25/03 , H04L27/00 , H04L27/18 , H04L27/20 , H04W84/16
CPC分类号： H03D3/007 , H04L27/00 , H04L27/2092 , H03B28/00 , H03C3/00 , H04L2025/03375 , H04L2025/03477
摘要： A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processor chip transcodes a digital voice input signal to provide digital input symbols; demodulates an output signal received from the base station to provide digital output symbols; and synthesizes a digital voice output signal from the digital output symbols. The FIR chip FIR filters the digital input symbols and generates timing signals for timing the transcoding and synthesizing operations in the processor chip. The DIF chip digitally synthesizes a digital intermediate frequency signal by direct digital synthesis (DDS) and modulates the digital intermediate frequency signal with the filtered input symbols to provide a modulated intermediate frequency input signal. The radio further processes the modulated input signal for transmission to the base station.
摘要翻译： 用于与无线用户通信系统中的基站进行无线通信的用户单元包括FIR芯片，DIF（数字中频）芯片，单个处理器芯片和无线电装置。 处理器芯片对数字语音输入信号进行转码以提供数字输入符号; 解调从基站接收的输出信号以提供数字输出符号; 并从数字输出符号合成数字语音输出信号。 FIR芯片FIR对数字输入符号进行滤波，并产生用于对处理器芯片中的代码转换和合成操作进行定时的定时信号。 DIF芯片通过直接数字合成（DDS）数字合成数字中频信号，并用滤波后的输入符号对数字中频信号进行调制，以提供调制中频输入信号。 无线电进一步处理调制的输入信号以传输到基站。
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公开(公告)号：US5146473A
公开(公告)日：1992-09-08
申请号：US658065
申请日：1991-02-20
IPC分类号： G06F1/035 , H03B28/00 , H03C3/00 , H03D3/00 , H04L23/00 , H04L25/03 , H04L27/00 , H04L27/04 , H04L27/06 , H04L27/12 , H04L27/20
CPC分类号： H04L25/03343 , H03D3/007 , H04L27/00 , H04L27/2092 , H03B28/00 , H03C3/00 , H04L2025/03375 , H04L2025/03477
摘要： A subscriber unit for wireless communication with a base station in a wireless subscriber communication system includes a FIR chip, a DIF (digital intermediate frequency) chip, a single processor chip and a radio. The processor chip transcodes a digital voice input signal to provide digital input symbols; demodulates an output signal received from the base station to provide digital output symbols; and synthesizes a digital voice output signal from the digital output symbols. The FIR chip FIR filters the digital input symbols and generates timing signals for timing the transcoding and synthesizing operations in the processor chip. The DIF chip digitally synthesizes a digital intermediate frequency signal by direct digital synthesis (DDS) and modulates the digital intermediate frequency signal with the filtered input symbols to provide a modulated intermediate frequency input signal. The radio further processes the modulated input signal for transmission to the base station.
摘要翻译： 用于与无线用户通信系统中的基站进行无线通信的用户单元包括FIR芯片，DIF（数字中频）芯片，单个处理器芯片和无线电装置。 处理器芯片对数字语音输入信号进行转码以提供数字输入符号; 解调从基站接收的输出信号以提供数字输出符号; 并从数字输出符号合成数字语音输出信号。 FIR芯片FIR对数字输入符号进行滤波，并产生用于对处理器芯片中的代码转换和合成操作进行定时的定时信号。 DIF芯片通过直接数字合成（DDS）数字合成数字中频信号，并用滤波后的输入符号对数字中频信号进行调制，以提供调制中频输入信号。 无线电进一步处理调制的输入信号以传输到基站。
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公开(公告)号：US09262002B2
公开(公告)日：2016-02-16
申请号：US12939078
申请日：2010-11-03
申请人： Brian Momeyer , Kevin M. Beckwith , Hui-Ya L. Nelson , Andre Gustavo P. Schevciw , Louis Dominic Oliveira , Wade L. Heimbigner , Babak Forutanpour
发明人： Brian Momeyer , Kevin M. Beckwith , Hui-Ya L. Nelson , Andre Gustavo P. Schevciw , Louis Dominic Oliveira , Wade L. Heimbigner , Babak Forutanpour
IPC分类号： G06F3/041 , G06F3/0485 , G06F3/0488
CPC分类号： G06F3/0414 , G06F3/0485 , G06F3/04883 , G06F2203/04105
摘要： A computing device includes a touch screen display with a plurality of force sensors, each of which provides a signal in response to contact with the touch screen display. Using force signals from the plurality of force sensors, a characteristic of the contact is determined, such as the magnitude of the force, the centroid of force and the shear force. The characteristic of the contact is used to select a command which is processed to control the computing device. For example, the command may be related to manipulating data displayed on the touch screen display, e.g., by adjusting the scroll speed or the quantity of data selected in response to the magnitude of force, or related to an operation of an application on the computing device, such as selecting different focal ranges, producing an alarm, or adjusting the volume of a speaker in response to the magnitude of force.
摘要翻译： 计算设备包括具有多个力传感器的触摸屏显示器，每个力传感器响应于与触摸屏显示器的接触而提供信号。 使用来自多个力传感器的力信号，确定接触的特性，例如力的大小，力的重心和剪切力。 该联系人的特征用于选择一个被处理以控制计算设备的命令。 例如，该命令可以与操纵触摸屏显示器上显示的数据有关，例如通过调整滚动速度或响应于力的大小选择的数据量，或者与计算机上的应用程序的操作有关 装置，例如选择不同的焦距范围，产生报警，或响应于力的大小来调节扬声器的音量。
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公开(公告)号：US20120051555A1
公开(公告)日：2012-03-01
申请号：US13215935
申请日：2011-08-23
IPC分类号： H04R1/10
CPC分类号： H04R1/1041 , G01H3/14 , H04R1/1091 , H04R2430/01
摘要： A method for adjusting volume in a headset based on accumulated acoustic energy density exposure is disclosed. A sound pressure value of a microphone positioned in a user's ear canal is measured. A current accumulated acoustic energy density exposure is determined based on sound pressure values measured during the rolling window. The maximum volume in the headset is adjusted based on a comparison of the current accumulated energy density exposure to a predetermined threshold.
摘要翻译： 公开了一种基于累积的声能密度暴露来调节耳机中的音量的方法。 测量位于使用者耳道中的麦克风的声压值。 基于在滚动窗口期间测量的声压值来确定当前累积的声能密度曝光。 基于当前累积的能量密度暴露与预定阈值的比较来调节耳机中的最大音量。
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公开(公告)号：US20100331048A1
公开(公告)日：2010-12-30
申请号：US12629612
申请日：2009-12-02
申请人： Pei Xiang , Wade L. Heimbigner
发明人： Pei Xiang , Wade L. Heimbigner
CPC分类号： H04S5/00 , H04R2499/11 , H04S1/002 , H04S1/007
摘要： Mid-side (M-S) encoded audio is reproduced by a device that includes a multi-channel digital-to-analog converter (DAC). The DAC has a first channel input receiving a digitized mid audio signal, a first channel output providing an analog mid audio signal, a second channel input receiving a digitized side audio signal and a second channel output providing an analog side audio signal. The DAC may also include a third channel for receiving a digitized second side audio signal. The second side audio signal is phase inverted. The device may be a handheld wireless communication device, such as a cellular phone, and may also include transducers for outputting M-S encoded sound in response to the analog mid and side audio signals.
摘要翻译： 中端（M-S）编码音频由包括多通道数/模转换器（DAC）的装置再现。 DAC具有接收数字化中音频信号的第一声道输入，提供模拟中音频信号的第一声道输出，接收数字化侧音频信号的第二声道输入和提供模拟侧音频信号的第二声道输出。 DAC还可以包括用于接收数字化的第二侧音频信号的第三通道。 第二侧音频信号是相位反相的。 该设备可以是诸如蜂窝电话的手持无线通信设备，并且还可以包括用于响应于模拟中间和侧面音频信号而输出M-S编码声音的换能器。
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公开(公告)号：US20120105358A1
公开(公告)日：2012-05-03
申请号：US12939078
申请日：2010-11-03
申请人： Brian Momeyer , Kevin M. Beckwith , Hui-Ya L. Nelson , Andrea Gustavo P. Schevciw , Louis Dominic Oliveira , Wade L. Heimbigner , Babak Forutanpour
发明人： Brian Momeyer , Kevin M. Beckwith , Hui-Ya L. Nelson , Andrea Gustavo P. Schevciw , Louis Dominic Oliveira , Wade L. Heimbigner , Babak Forutanpour
IPC分类号： G06F3/045
CPC分类号： G06F3/0414 , G06F3/0485 , G06F3/04883 , G06F2203/04105
摘要： A computing device includes a touch screen display with a plurality of force sensors, each of which provides a signal in response to contact with the touch screen display. Using force signals from the plurality of force sensors, a characteristic of the contact is determined, such as the magnitude of the force, the centroid of force and the shear force. The characteristic of the contact is used to select a command which is processed to control the computing device. For example, the command may be related to manipulating data displayed on the touch screen display, e.g., by adjusting the scroll speed or the quantity of data selected in response to the magnitude of force, or related to an operation of an application on the computing device, such as selecting different focal ranges, producing an alarm, or adjusting the volume of a speaker in response to the magnitude of force.
摘要翻译： 计算设备包括具有多个力传感器的触摸屏显示器，每个力传感器响应于与触摸屏显示器的接触而提供信号。 使用来自多个力传感器的力信号，确定接触的特性，例如力的大小，力的重心和剪切力。 该联系人的特征用于选择一个被处理以控制计算设备的命令。 例如，该命令可以与操纵触摸屏显示器上显示的数据有关，例如通过调整滚动速度或响应于力的大小选择的数据量，或者与计算机上的应用程序的操作有关 装置，例如选择不同的焦距范围，产生报警，或响应于力的大小来调节扬声器的音量。
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公开(公告)号：US06476745B1
公开(公告)日：2002-11-05
申请号：US09447507
申请日：1999-11-23
IPC分类号： H03M118
CPC分类号： H04B14/046 , H03M1/183
摘要： An Automatic Gain Control System for voice codecs used in a digital wireless handset or in any other environment where there is a large amount of background noise. The invention utilizes the processing power available in Digital Signal Processor 111 to adaptively adjust the gain of amplifier 202 and filter 205 in the transmit channel to eliminate audio distortion in a “loud talker” environment. The gain correction information is transmitted by the DSP 111 to the digital filter and PCM I/O block 204 in the 3 unused bits of the 16 bit PCM data word thus eliminating any additional connections.
摘要翻译： 用于数字无线手机或任何其他背景噪音大的环境中的语音编解码器的自动增益控制系统。 本发明利用数字信号处理器111中可用的处理能力自适应地调整发射信道中的放大器202和滤波器205的增益，以消除“大声说话者”环境中的音频失真。 增益校正信息由DSP111发送到16位PCM数据字的3个未使用位中的数字滤波器和PCM I / O块204，从而消除任何附加连接。
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公开(公告)号：US06233554B1
公开(公告)日：2001-05-15
申请号：US08989743
申请日：1997-12-12
IPC分类号： G10L1914
CPC分类号： H03M1/185
摘要： An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.
摘要翻译： 音频处理器以及用于控制其增益的方法和电路。 音频处理器包括用于接收模拟音频信号的第一可变增益放大器; 用于将模拟音频信号转换成数字音频信号的模数转换器; 以及用于对数字音频信号进行编码的接口电路。 接口电路还将数字音频信号排列成编码的发送帧序列，并且接收编码的接收帧序列，每个接收帧包括预定数量的编码数字音频信号数据位和预定数量的数字增益控制位。 接口电路还响应于数字增益控制位来调节第一可变增益放大器的增益电平。 在另一个实施例中，音频处理器还包括第二可变增益放大器，并且接口电路响应于数字增益控制位来调整第二可变增益放大器的增益电平。
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公开(公告)号：USD376804S
公开(公告)日：1996-12-24
申请号：US47359
申请日：1995-12-01
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