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    • 31. 发明申请
    • ELECTRONIC DEVICE AND EXTERNAL EQUIPMENT WITH DIGITAL NOISE CANCELLATION AND DIGITAL AUDIO PATH
    • 电子设备和外部设备与数字噪声消除和数字音频路径
    • US20110116646A1
    • 2011-05-19
    • US12622378
    • 2009-11-19
    • Wendell B. SanderJeffrey J. TerlizziBrian SanderDavid TupmanBarry Corlett
    • Wendell B. SanderJeffrey J. TerlizziBrian SanderDavid TupmanBarry Corlett
    • G10K11/16G06F17/00
    • H04R1/1083H04M1/6008H04M1/6058H04R2410/05H04R2420/03H04R2420/09H04R2460/03H04R2499/13
    • Electronic devices and accessories are provided that may communicate over wired communications paths. The electronic devices may be portable electronic devices such as cellular telephones or media players and may have audio connectors such as 3.5 mm audio jacks. The accessories may be headsets or other equipment having mating 3.5 mm audio plugs and speakers for playing audio. Microphones may be included in an accessory to gather voice signals and noise cancellation signals. Analog-to-digital converter circuitry in the accessory may digitize the microphone signals. Digital voice signals and voice noise cancellation signals can be transmitted over the communications path and processed by audio digital signal processor circuitry in an electronic device. Digital-to-analog converter circuitry in the accessory may convert digital audio signals to analog speaker signals. Digital noise cancellation signals may use digital noise signals to cancel noise from digital audio signals that have been received from an electronic device.
    • 提供可以通过有线通信路径进行通信的电子设备和附件。 电子设备可以是诸如蜂窝电话或媒体播放器的便携式电子设备,并且可以具有诸如3.5mm音频插孔的音频连接器。 附件可以是具有3.5mm音频插头和扬声器的耳机或其他设备,用于播放音频。 配件中可能包含麦克风以收集语音信号和噪声消除信号。 附件中的模拟 - 数字转换器电路可以将麦克风信号数字化。 数字语音信号和语音噪声消除信号可以通过通信路径发送并由电子设备中的音频数字信号处理器电路进行处理。 附件中的数模转换器电路可将数字音频信号转换为模拟扬声器信号。 数字噪声消除信号可以使用数字噪声信号来从已经从电子设备接收的数字音频信号中消除噪声。
    • 32. 发明授权
    • Multi-mode communications transmitter
    • 多模通信发射机
    • US07158494B2
    • 2007-01-02
    • US10045199
    • 2001-10-22
    • Brian SanderWendell B. SanderStephan V. Schell
    • Brian SanderWendell B. SanderStephan V. Schell
    • H04Q7/00H04L23/02
    • H03G3/3047H04B1/0475H04L27/0008
    • The present invention, generally speaking, provides for true multi-mode operation enabling mode switching to be done on-the-fly, in real time. Ramping techniques are provided to fully ramp a communications signal down and then back up inside a guard period while switching from one mode to another so that signal glitches occur only while the signal is ramped down and so can be made negligible. In another aspect of the invention, an advantageous multi-mode communications platform having a polar modulation architecture is provided. Preferably, the platform is based on a multi-mode, predominantly digital, single-chip communications signal processor. A digital, phase-stable, frequency lock loop enables versatile, low-power operation.
    • 本发明一般地提供真正的多模式操作,使得能够实时地实时地进行模式切换。 提供斜坡技术以在从一种模式切换到另一种模式的同时将通信信号向下逐渐向下延伸,然后在保护期内备份,从而仅在信号下降并且因此可以忽略不计时发生信号毛刺。 在本发明的另一方面,提供了一种具有极性调制架构的有利的多模式通信平台。 优选地,平台基于多模式,主要是数字的单芯片通信信号处理器。 数字,相位稳定的频率锁定环可实现多功能,低功耗的操作。
    • 34. 发明授权
    • Electronic device and external equipment with digital noise cancellation and digital audio path
    • 具有数字噪声消除和数字音频通道的电子设备和外部设备
    • US08223986B2
    • 2012-07-17
    • US12622378
    • 2009-11-19
    • Wendell B. SanderJeffrey J. TerlizziBrian SanderDavid TupmanBarry Corlett
    • Wendell B. SanderJeffrey J. TerlizziBrian SanderDavid TupmanBarry Corlett
    • H04R1/10G10K11/16H03B29/00
    • H04R1/1083H04M1/6008H04M1/6058H04R2410/05H04R2420/03H04R2420/09H04R2460/03H04R2499/13
    • Electronic devices and accessories are provided that may communicate over wired communications paths. The electronic devices may be portable electronic devices such as cellular telephones or media players and may have audio connectors such as 3.5 mm audio jacks. The accessories may be headsets or other equipment having mating 3.5 mm audio plugs and speakers for playing audio. Microphones may be included in an accessory to gather voice signals and noise cancellation signals. Analog-to-digital converter circuitry in the accessory may digitize the microphone signals. Digital voice signals and voice noise cancellation signals can be transmitted over the communications path and processed by audio digital signal processor circuitry in an electronic device. Digital-to-analog converter circuitry in the accessory may convert digital audio signals to analog speaker signals. Digital noise cancellation signals may use digital noise signals to cancel noise from digital audio signals that have been received from an electronic device.
    • 提供可以通过有线通信路径进行通信的电子设备和附件。 电子设备可以是诸如蜂窝电话或媒体播放器的便携式电子设备,并且可以具有诸如3.5mm音频插孔的音频连接器。 附件可以是具有3.5mm音频插头和扬声器的耳机或其他设备,用于播放音频。 配件中可能包含麦克风以收集语音信号和噪声消除信号。 附件中的模拟 - 数字转换器电路可以将麦克风信号数字化。 数字语音信号和语音噪声消除信号可以通过通信路径发送并由电子设备中的音频数字信号处理器电路进行处理。 附件中的数模转换器电路可将数字音频信号转换为模拟扬声器信号。 数字噪声消除信号可以使用数字噪声信号来从已经从电子设备接收的数字音频信号中消除噪声。
    • 37. 发明授权
    • Digital communications system with variable-bandwidth traffic channels
    • 具有可变带宽业务信道的数字通信系统
    • US08457157B2
    • 2013-06-04
    • US13405969
    • 2012-02-27
    • Wendell B. SanderBarry CorlettDavid John TupmanBrian SanderJeffrey J. TerlizziAndrew BrightAnup Sharma
    • Wendell B. SanderBarry CorlettDavid John TupmanBrian SanderJeffrey J. TerlizziAndrew BrightAnup Sharma
    • H04J3/16
    • H04J3/1682H04M1/6058
    • Electronic devices and equipment may communicate over a wired communications path. The wired communications path may include one or more wires and may be associated with a headphone cable. Data may be conveyed in the form of a digital data stream containing multiple traffic channels. The digital data stream may include superframes, each of which has multiple frames of data. The frames of data may each contain a number of data slots. Some of the slots in a superframe may be used exclusively by a particular one of the traffic channels. Boundary slots may be shared between traffic channels. Data interface circuitry may implement a data dispersion algorithm that determines the pattern in which data from each traffic channel is distributed within each boundary slot. Transmitting data interface circuitry may merge traffic channels into a single data stream. Receiving data interface circuitry may reconstruct the traffic channels.
    • 电子设备和设备可以通过有线通信路径进行通信。 有线通信路径可以包括一个或多个电线并且可以与耳机线缆相关联。 数据可以以包含多个业务信道的数字数据流的形式传送。 数字数据流可以包括超帧,每个超帧具有多个数据帧。 数据帧可以各自包含多个数据时隙。 超帧中的一些时隙可以由特定的业务信道专门使用。 边界槽可以在通道之间共享。 数据接口电路可以实现数据分散算法,其确定在每个边界时隙内分布来自每个业务信道的数据的模式。 传输数据接口电路可以将业务信道合并成单个数据流。 接收数据接口电路可以重建业务信道。
    • 40. 发明授权
    • Digital sampling apparatuses and methods
    • 数字采样设备和方法
    • US08223909B2
    • 2012-07-17
    • US12132926
    • 2008-06-04
    • Wendell B. Sander
    • Wendell B. Sander
    • H04L7/00
    • H03L7/0995G01R23/15H03L7/07H03L7/091H03L7/18
    • Methods and apparatus for sampling and determining the frequency of periodic digital signals. An exemplary digital sampling apparatus includes a polyphase sampling apparatus configured to sample a periodic digital signal according to a polyphase clock system having multiple phases. The multiple phases provided by the polyphase clock system are successively distributed in time so that consecutive phases have a periodic phase difference. By using a polyphase clock system, a sampling rate that is equivalent to a sampling clock having a period equal to the phase difference in time between phases of the polyphase clocks is realized. Accordingly, the effective sampling rate of a given periodic digital signal can be increased, or the sampling of higher frequency periodic digitals signals can be achieved, while the underlying logic circuitry used to capture the samples is clocked at a much lower rate.
    • 用于采样和确定周期性数字信号频率的方法和装置。 示例性数字采样装置包括:多相采样装置,被配置为根据具有多个相位的多相时钟系统对周期数字信号进行采样。 由多相时钟系统提供的多个相位在时间上相继分布,使得连续的相位具有周期性的相位差。 通过使用多相时钟系统,实现了等效于具有等于多相时钟的相位之间的时间相位差的周期的采样时钟的采样率。 因此,可以增加给定的周期性数字信号的有效采样率,或者可以实现更高频率周期数字信号的采样,而用于捕获采样的基础逻辑电路以低得多的速率被计时。