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    • 1. 发明授权
    • ADPCM coding and decoding techniques for personal communication systems
    • 用于个人通信系统的ADPCM编码和解码技术
    • US5615222A
    • 1997-03-25
    • US191609
    • 1994-02-04
    • David A. WrightTerrance R. BourkNeal K. Riedel
    • David A. WrightTerrance R. BourkNeal K. Riedel
    • H04B7/08H04L1/00H04L1/06H04L1/20
    • H04L1/0057H04B7/0817H04L1/0041H04L1/0045
    • The present invention provides a system and methods for coding and decoding digital data to improve the subjective quality of a voice signal. According to the invention, a sampled voice waveform is compressed by an ADPCM algorithm resulting in a sequence of samples. The sequence of samples are formed into an array and coded into parity bits. Row and column checksums are preferably performed on the parity bits to form row and column vectors. The samples and row and column vectors are transmitted to a receiving unit preferably having a diversity capability. The receiver processes each diversity block by generating row and column vectors from the received samples and comparing the generated row and column vectors to the row and column vectors received. Then based on the comparison, the samples of the best diversity block are used to reconstruct the voice waveform on a sample-by-sample basis.
    • 本发明提供了一种用于对数字数据进行编码和解码以提高语音信号的主观质量的系统和方法。 根据本发明,通过ADPCM算法压缩采样声音波形,得到一系列样本。 样本序列形成阵列并编码为奇偶校验位。 行和列校验和优选地在奇偶校验位上执行以形成行和列向量。 样本和行和列向量被发送到优选地具有分集能力的接收单元。 接收机通过从接收到的采样生成行和列向量并将生成的行和列向量与接收的行和列向量进行比较来处理每个分集块。 然后基于比较,最佳分集块的样本被用于逐个样本地重构语音波形。
    • 3. 发明授权
    • Method and apparatus for a dual-mode radio in a wireless communication system
    • 无线通信系统中双模无线电的方法和装置
    • US07643463B1
    • 2010-01-05
    • US10216082
    • 2002-08-08
    • Joel B. LinskyTerrance R. Bourk
    • Joel B. LinskyTerrance R. Bourk
    • H04B7/208H04J3/22H04M1/00
    • H04L67/322
    • The present invention is a novel method and apparatus for a dual-mode radio (DMR) in a wireless communication system. The present invention allows Bluetooth™ protocol and 802.11 protocol devices to co-exist. The present inventive method classifies Bluetooth™ protocol and 802.11 protocol events according to importance. In the basic dual-mode radio method, the present invention assigns two levels of importance or priority Bluetooth™ events: “high” and “low”. In the enhanced dual-mode radio method, the present invention assigns three levels of importance or priority to Bluetooth™ events: “high”, “low” and “promotable”. The present inventive apparatus provides a means for disabling 802.11 transmissions when high-priority Bluetooth™ events are detected.
    • 本发明是一种用于无线通信系统中的双模式无线电(DMR)的新颖方法和装置。 本发明允许Bluetooth TM协议和802.11协议设备共存。 本发明的方法根据重要性对Bluetooth TM协议和802.11协议事件进行分类。 在基本的双模式无线电方法中,本发明分配了两个级别的重要性或优先级的蓝牙TM事件:“高”和“低”。 在增强型双模式无线电方法中,本发明为蓝牙(TM)事件分配三个等级的重要性或优先级:“高”,“低”和“可升级”。 本发明的装置提供了当检测到高优先级蓝牙TM事件时禁用802.11传输的手段。
    • 4. 发明授权
    • Noise cancellation headset
    • 降噪耳机
    • US5182774A
    • 1993-01-26
    • US555990
    • 1990-07-20
    • Terrance R. Bourk
    • Terrance R. Bourk
    • A61F11/14H04R1/10
    • H04R1/1083A61F2011/145
    • A headset for acoustic reproduction of an electronic signal which electronic signal is representative of the summation of a desired audio signal and an anti-noise signal. The headset includes a headband, an earcup mounted to the headband, a driver mounted within the earcup which receives and acoustically reproduces the electronic signal, a directional microphone which detects and transduces the acoustical pressure within the earcup cavity, means for generating the anti-noise signal from the microphone signal, and a positioning member for mounting the microphone to the earcup in a position so that the microphone is acoustically coupled to the driver. The microphone is oriented so that its vented or open face is pointing towards the driver. If the driver is provided with an inner dome portion and an outer annulus portion the microphone is positioned by its attachment to a grille plate extending across the driver, the microphone being mounted to the grille plate on a side opposite the driver. The grille plate includes a plurality of apertures, at least one of which is positioned proximate the center of the driver with the microphone mounted across that aperture so that the microphone is acoustically coupled to the dome portion and acoustically isolated from the outer annulus portion.
    • 一种用于电子信号的声音再现的耳机,其电子信号表示所需音频信号和抗噪声信号的总和。 头戴式耳机包括头带,安装在头带上的耳罩,安装在耳罩内的驱动器,用于接收并声学地再现电子信号;定向麦克风,其检测和转换耳罩腔内的声压;用于产生抗噪声的装置 来自麦克风信号的信号,以及用于将麦克风安装到耳罩的定位构件,使得麦克风声学耦合到驾驶员。 麦克风被定向成使得其通风或开放的面朝向驾驶员。 如果驱动器设置有内圆顶部分和外环形部分,则麦克风通过其附接定位在延伸穿过驱动器的格栅板上,麦克风在与驱动器相对的一侧安装到格栅板。 格栅板包括多个孔,其中至少一个孔邻近驱动器的中心定位,麦克风安装在穿过该孔的位置上,使得麦克风声耦合到圆顶部分并与外环形部分隔离。
    • 5. 发明授权
    • Method and apparatus for controlling the flow of data in a wireless communication system
    • 用于控制无线通信系统中的数据流的方法和装置
    • US06973071B1
    • 2005-12-06
    • US09799991
    • 2001-03-06
    • Terrance R. Bourk
    • Terrance R. Bourk
    • H04J3/24H04L12/56H04L29/08
    • H04W28/10H04L47/10H04L47/14H04L69/324H04L69/325H04L69/326H04M2250/02
    • The present invention is a novel method and apparatus for controlling packet data flow in Bluetooth devices. The present Bluetooth flow control method and apparatus reduces data buffer overflow conditions using an inventive flow control technique comprising a dual flow control step and a payload header flow control step. In the dual flow control step, the present inventive method initially enables (i.e., transmits to a transmitting device) both packet header flow control and payload header flow control. In one embodiment, the Bluetooth flow control technique utilizes non-acknowledgment of “nack” commands to enable packet header flow control. In another embodiment, the Bluetooth flow control technique utilizes a packet header flow control bit to enable packet header flow control. In the payload header flow control step, the method determines whether payload header flow control information has been successfully received and, if so, it disables packet header flow control.
    • 本发明是一种用于控制蓝牙设备中的分组数据流的新颖方法和装置。 本发明的蓝牙流控制方法和装置使用包括双流控制步骤和有效载荷报头流控制步骤的本发明的流控制技术来减少数据缓冲器溢出条件。 在双流控制步骤中,本发明的方法最初使分组报头流控制和有效载荷报头流控制能够(即,发送到发送设备)。 在一个实施例中,蓝牙流控制技术利用“nack”命令的非确认来启用分组报头流控制。 在另一个实施例中,蓝牙流控制技术利用分组报头流控制位来启用分组报头流控制。 在有效载荷报头流控制步骤中,该方法确定有效载荷报头流控制信息是否已成功接收,如果是,则禁止分组报头流控制。
    • 7. 发明授权
    • Apparatus and method for wireless communications
    • 无线通信的装置和方法
    • US06366622B1
    • 2002-04-02
    • US09305330
    • 1999-05-04
    • Stephen Joseph BrownAndrew Xavier EstradaTerrance R. BourkSteven R. NorsworthyPatrick J. MurphyChristopher Dennis HullGlenn ChangMark Vernon LaneJorge A. Grilo
    • Stephen Joseph BrownAndrew Xavier EstradaTerrance R. BourkSteven R. NorsworthyPatrick J. MurphyChristopher Dennis HullGlenn ChangMark Vernon LaneJorge A. Grilo
    • H04B130
    • H04B1/30
    • An apparatus for receiving signals includes a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal. An I/Q direct down converter is coupled to the LNA. The I/Q direct down converter is configured to split the RF signal into real and imaginary components and to down convert the real and imaginary components directly to baseband signals. A local oscillator (LO) is coupled to the I/Q direct down converter and is configured to drive the I/Q direct down converter. First and second filters are coupled to the I/Q direct down converter. The first and second filters are configured to filter the down converted real and imaginary components, respectively. First and second analog-to-digital converters (ADCs) are coupled to the first and second filters, respectively. The first and second ADCs are configured to convert the real and imaginary components into digital signals. The first and second ADCs have a dynamic range that is wide enough to convert the filtered, down converted real and imaginary components to digital signals without using variable gain on the filtered and down converted real and imaginary components. An apparatus for use in wireless communications includes a radio, a modem and a controller integrated onto a single integrated circuit (IC). The radio includes a receiver for receiving data and a transmitter for transmitting data. The modem is coupled to the radio and is configured to demodulate received data and modulate data for transmission. The controller is coupled to the modem and includes a digital interface for external communications through which received data and data for transmission is sent, a connection state machine configured to accept commands through the digital interface and to respond to the commands by initiating a sequence, and a receive/transmit state machine configured to perform state control of the radio in response to the initiated sequence.
    • 用于接收信号的装置包括被配置为接收射频(RF)信号的低噪声放大器(LNA)。 I / Q直接下变频器耦合到LNA。 I / Q直接下变频器被配置为将RF信号分成实部和虚部,并将实部和虚部分直接转换为基带信号。 本地振荡器(LO)耦合到I / Q直接下变频器,并被配置为驱动I / Q直接下变频器。 第一和第二滤波器耦合到I / Q直接下变频器。 第一和第二滤波器被配置为分别对下变换的实部和虚部进行滤波。 第一和第二模数转换器(ADC)分别耦合到第一和第二滤波器。 第一和第二ADC被配置为将实部和虚部转换为数字信号。 第一和第二ADC具有足够宽的动态范围,以将滤波的,下变换的实分量和虚分量转换为数字信号,而不对滤波和下变换的实分量和虚分量进行可变增益。 用于无线通信的装置包括集成在单个集成电路(IC)上的无线电,调制解调器和控制器。 无线电设备包括用于接收数据的接收机和用于发送数据的发射机。 调制解调器耦合到无线电设备,并被配置为对接收到的数据进行解调并调制数据进行传输。 控制器耦合到调制解调器,并且包括用于外部通信的数字接口,通过该数字接口发送接收的数据和用于发送的数据,连接状态机被配置为通过数字接口接受命令并且通过发起序列来响应命令,以及 接收/发送状态机,被配置为响应于所启动的序列来执行无线电的状态控制。
    • 8. 发明授权
    • Method and apparatus for implementing a high-precision interval timer utilizing multiple oscillators including a non-optimal oscillator
    • 用于实现使用包括非最佳振荡器的多个振荡器的高精度间隔定时器的方法和装置
    • US06292062B1
    • 2001-09-18
    • US09502281
    • 2000-02-10
    • Terrance R. BourkNeal K. Riedel
    • Terrance R. BourkNeal K. Riedel
    • H04Q300
    • G04F1/005G04G3/02G06F1/08G06F1/14H03L7/00
    • The present invention is a novel method and apparatus for implementing a high-precision timer utilizing a non-optimal oscillator and a high-speed oscillator wherein only one oscillator is enabled at a given moment in time. The high-precision timer method and apparatus comprises a timer and an error-correction technique. In one embodiment, the timer of the present invention is constructed from a high-speed oscillator and a low-speed non-optimal oscillator. The timer operates from the high-speed oscillator during on-the-air modes of operation and from the low-speed non-optimal oscillator during sleep modes of operation. The present inventive method corrects errors that are introduced by the non-optimal oscillator and a swallow counter. The errors are corrected using an error-correction technique having two steps: an error-determination step and an error-correction step. In the preferred embodiment of the error-determination step, a total error for a time interval is determined by performing the following steps: (1) calculating an individual error that occurs at each pulse; (2) multiplying the individual error by the number of pulses occurring during the time interval; and (3) adjusting for a non-optimal counter. Once an error has been determined, the error-correction step adjusts a clock counter accordingly. Depending upon the error-correction technique used, the error-correction step can correct the total error at one of several locations within a timer counter chain that is used to practice the present invention. The implementation of the present invention allows a straightforward realization of multiple timers.
    • 本发明是一种用于实现使用非最佳振荡器的高精度定时器和高速振荡器的新颖方法和装置,其中在给定时刻只能使能一个振荡器。 高精度定时器方法和装置包括定时器和纠错技术。 在一个实施例中,本发明的定时器由高速振荡器和低速非最优振荡器构成。 在空中运行模式下,定时器从高速振荡器运行,并在睡眠模式下从低速非最优振荡器运行。 本发明的方法校正由非最佳振荡器和吞咽计数器引入的误差。 使用具有两个步骤的纠错技术校正错误:错误确定步骤和纠错步骤。 在误差判定步骤的优选实施例中,通过执行以下步骤来确定时间间隔的总误差:(1)计算在每个脉冲发生的单个误差; (2)将单个误差乘以时间间隔内发生的脉冲数; 和(3)调整非最佳计数器。 一旦确定了错误,纠错步骤相应地调整时钟计数器。 根据所使用的纠错技术,误差校正步骤可以校正用于实施本发明的定时器计数器链中的多个位置之一的总误差。 本发明的实现允许直接实现多个定时器。