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1. 发明申请

US20180310434A1 APPARATUS FOR DYNAMIC POSITIONING OF A FAN TO REDUCE NOISE 审中-公开
公开(公告)号：US20180310434A1
公开(公告)日：2018-10-25
申请号：US16018294
申请日：2018-06-26
申请人： Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
发明人： Bryan L. Young , Gary D. Cudak , Amy L. Rose , Jennifer J. Lee-Baron , John S. Crowe , Nathan J. Peterson
IPC分类号： H05K7/20 , H04R1/22 , H04R3/00 , G06F1/16
CPC分类号： G10K11/004 , F04D15/00 , F04D19/002 , F04D25/166 , F04D27/001 , F04D27/004 , F04D29/663 , F05D2270/333 , G06F1/1633 , G10K11/161 , G10K11/175 , G10K11/178 , G10K2210/11 , H04R1/22 , H04R3/00 , H05K7/20209
摘要： An apparatus includes a computer enclosure with a first fan, a second fan, a fan controller, and an input for receiving a signal from a microphone indicating an amount of noise at a target location. The apparatus further includes a first actuator coupled to the first fan for adjusting an axial position of the first fan, wherein the controller controls the operation of the first actuator to position the first fan to reduce the noise indicated by the signal from the microphone with the first and second fans in operation. The microphone senses sound pressure and the controller automatically adjusts a position of one or more fans using an actuator to change the distance from the fan to the microphone, which may be co-located with a user, to provide destructive interference at the location of the microphone.

2. 发明授权

US08331577B2 Electronic device having active noise control with an external sensor 有权
标题翻译：具有外部传感器的主动噪声控制的电子设备
公开(公告)号：US08331577B2
公开(公告)日：2012-12-11
申请号：US12250982
申请日：2008-10-14
申请人： Geoff Lyon , Mehrban Jam , Ian N Robinson
发明人： Geoff Lyon , Mehrban Jam , Ian N Robinson
IPC分类号： G10K11/175 , G10K11/178 , F01N1/06 , G10K11/00 , H03B29/00 , F01N1/00
CPC分类号： G10K11/178 , G10K2210/1053 , G10K2210/11 , G10K2210/112
摘要： An electronic device includes an enclosure for the electronic device and a duct extending from an interior to an exterior of the enclosure to exhaust airflow from the enclosure. The electronic device further includes an active noise control mechanism. The active noise control mechanism includes an internal sensor, an external sensor, and an acoustic wave generator. The internal sensor is arranged within the enclosure to sense a noise and generate an internal sensor output, and the external sensor is arranged outside of the enclosure to detect sounds and generate an external sensor output. Based on the internal sensor output and the external sensor output, the acoustic wave generator generates an acoustic wave within the duct to reduce the noise.
摘要翻译：电子设备包括用于电子设备的外壳和从外壳的内部延伸到外部的管道以从外壳排出气流。电子设备还包括主动噪声控制机构。主动噪声控制机构包括内部传感器，外部传感器和声波发生器。内部传感器布置在外壳内以感测噪声并产生内部传感器输出，外部传感器布置在外壳外部以检测声音并产生外部传感器输出。基于内部传感器输出和外部传感器输出，声波发生器在管道内产生声波以减少噪声。

3. 发明申请

US20110123036A1 MUFFLED RACK AND METHODS THEREOF 审中-公开
标题翻译：松动的机架及其方法
公开(公告)号：US20110123036A1
公开(公告)日：2011-05-26
申请号：US12951113
申请日：2010-11-22
申请人： Yossi Barath , Yoel Naor , Michael Surov , Alon Slapak
发明人： Yossi Barath , Yoel Naor , Michael Surov , Alon Slapak
IPC分类号： G10K11/16 , H05K5/00 , H05K7/20
CPC分类号： H05K7/20736 , G10K11/178 , G10K2210/11 , G10K2210/112 , G10K2210/3027
摘要： Some demonstrative embodiments include a muffled rack configured to maintain at least one electronic device, wherein the electronic device has an inlet to receive air for cooling the electronic device and an outlet to discharge the air. The muffled rack may be configured to muffle noise emanating from within the rack through an air inlet and/or an air outlet of the rack. Other embodiments are described and claimed.
摘要翻译：一些说明性实施例包括构造成保持至少一个电子设备的消音架，其中电子设备具有用于接收用于冷却电子设备的空气的入口和用于排出空气的出口。消声器架可以被配置为通过机架的空气入口和/或空气出口消除从机架内发出的噪声。描述和要求保护其他实施例。

4. 发明申请

US20090034746A1 CHASSIS WITH NOISE CANCELLATION FUNCTION, NOISE CANCELLATION METHOD, METHOD FOR PRODUCING NOISE CANCELLATION SOUND DATA, PROGRAM FOR PRODUCING NOISE CANCELLATION SOUND DATA, AND MEDIUM 审中-公开
标题翻译：具有噪声消除功能的组合，噪声消除方法，用于产生噪声消除声音数据的方法，用于产生噪声消除声音数据的程序和介质
公开(公告)号：US20090034746A1
公开(公告)日：2009-02-05
申请号：US12184865
申请日：2008-08-01
申请人： KOICHI NOZAKI
发明人： KOICHI NOZAKI
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/11 , G10K2210/3033
摘要： A chassis with noise cancellation function which performs active noise cancellation in a first location for cancelling a noise generated in the chassis includes a sound receiving circuit receiving a surrounding sound in a second location, a memory circuit storing noise cancellation sound data and the surrounding sound that are associated with each other, a controller selecting the noise cancellation sound data corresponding to the surrounding sound received by the sound receiving circuit from the memory circuit and generating a noise cancellation signal based on the selected noise cancellation sound data and a sound output unit outputting a noise cancellation sound in said first location based on the noise cancellation signal to perform the active noise cancellation.
摘要翻译：具有噪声消除功能的底盘，其在第一位置中执行主动噪声消除以抵消在底盘中产生的噪声，包括接收第二位置中的周围声音的声音接收电路，存储噪声消除声音数据的存储电路和周围声音，彼此相关联，控制器从存储器电路中选择对应于由声音接收电路接收的周围声音的噪声消除声音数据，并且基于所选择的噪声消除声音数据产生噪声消除信号，并且声音输出单元输出基于噪声消除信号在所述第一位置的噪声消除声音进行主动噪声消除。

5. 发明授权

US06825786B1 Associative noise attenuation 失效
标题翻译：相关噪声衰减
公开(公告)号：US06825786B1
公开(公告)日：2004-11-30
申请号：US10430863
申请日：2003-05-06
申请人： James R. MacDonald , Drew J. Dutton , Stephen Cox
发明人： James R. MacDonald , Drew J. Dutton , Stephen Cox
IPC分类号： H03M166
CPC分类号： G10K11/178 , G10K2210/11 , G10K2210/3033 , G11B20/10009
摘要： A system may include a memory configured to store an attenuation waveform and control logic. The control logic is configured to receive a synchronizing signal indicative of an operating characteristic of a noise source. In response to a value of a characteristic (e.g., frequency) of the synchronizing signal, the control logic is configured to output the attenuation waveform from the memory if the attenuation waveform is associated with that value of the characteristic of the synchronizing signal. An attenuating noise generated dependent on the attenuation waveform attenuates a noise generated by the noise source.
摘要翻译：系统可以包括被配置为存储衰减波形和控制逻辑的存储器。控制逻辑被配置为接收指示噪声源的操作特性的同步信号。响应于同步信号的特性（例如，频率）的值，如果衰减波形与同步信号的特性值相关联，则控制逻辑被配置为从存储器输出衰减波形。根据衰减波形产生的衰减噪声会衰减由噪声源产生的噪声。

6. 发明授权

US11996080B2 Electronic system with heat dissipation and feed-forward active noise control function and related method 有权
公开(公告)号：US11996080B2
公开(公告)日：2024-05-28
申请号：US18203656
申请日：2023-05-31
申请人： ACER INCORPORATED
发明人： Jia-Ren Chang , Ruey-Ching Shyu
IPC分类号： G10K11/178
CPC分类号： G10K11/17854 , G10K11/17875 , G10K2210/11 , G10K2210/3028
摘要： An electronic system includes a fan module, an embedded controller, a reference microphone, an error microphone, an active noise cancellation controller, and a micro speaker module. The reference microphone is configured to output a wide-band noise signal associated with the operation of the fan module. The error microphone is configured to output an error signal by detecting the noise level during the operation of the electronic system. According to the wide-band noise signal, the error signal and the fan information provided by the embedded controller, the active noise cancellation controller calculates the narrow-band noises and the wide-band noises generated by the fan module, and drives the micro speaker module accordingly for providing a noise cancellation signal. The error signal may be reduced to zero by adaptively adjusting the noise cancellation signal for canceling the noises generated during the operation of the electronic system.

7. 发明授权

US11875773B2 Fan control system and method for noise cancellation 有权
公开(公告)号：US11875773B2
公开(公告)日：2024-01-16
申请号：US17737501
申请日：2022-05-05
申请人： British Cayman Islands Intelligo Technology Inc.
发明人： Ting-Yao Chen , Chen-Chu Hsu , Tsung-Liang Chen
IPC分类号： G10K11/178 , G05D19/02
CPC分类号： G10K11/17854 , G05D19/02 , G10K11/17823 , G10K11/17825 , G10K11/17881 , G10K2210/109 , G10K2210/11 , G10K2210/112 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3038 , G10K2210/3043 , G10K2210/3044 , G10K2210/3046 , G10K2210/3051
摘要： A fan control system applied to N fans inside a computer system is disclosed, comprising: a main microphone, a control circuitry, a wave generation circuitry and a number N of fan controllers. The control circuitry calculates a basic frequency value according to a temperature inside the computer system, and continuously updates a parameter by any known optimization algorithm according to a main audio signal from the main microphone. The wave generation circuitry generates N square waves according to the basic frequency value and the parameter. The N fan controllers respectively form and transmit N modulation signals to the N fans according to the N square waves and N tachometric signals from the N fans. The parameter is one of a frequency variation and a set of phase differences, and the N square waves have the same frequency.

8. 发明申请

US20180108339A1 DYNAMIC POSITIONING OF FANS TO REDUCE NOISE 审中-公开
公开(公告)号：US20180108339A1
公开(公告)日：2018-04-19
申请号：US15292337
申请日：2016-10-13
申请人： Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
发明人： Bryan L. Young , Gary D. Cudak , Amy L. Rose , Jennifer J. Lee-Baron , John S. Crowe , Nathan J. Peterson
IPC分类号： G10K11/00 , F04D19/00 , F04D15/00 , G10K11/175
CPC分类号： G10K11/004 , F04D15/00 , F04D19/002 , F04D25/166 , F04D27/001 , F04D27/004 , F04D29/663 , F05D2270/333 , G10K11/161 , G10K11/175 , G10K11/178 , G10K2210/11
摘要： A method includes sensing sound pressure at a specified location, and a controller automatically adjusting a position of one or more fans among a plurality of fans to reduce the sound pressure sensed at the specified location. The position of the one or more fans may, for example, be adjusted using an actuator to change the distance from the fan and the specified location, which may be a location of a user. Optionally, the method may further include the controller automatically adjusting a speed of one or more fans among the plurality of fans to reduce the sound pressure sensed at the specified location. The position and speed of one or more fans may be adjusted to provide destructive interference at the specified location.

9. 发明申请

US20150296295A1 FAN ACTIVE NOISE SELF-LOWERING SYSTEM 有权
标题翻译：风扇主动噪声自动降低系统
公开(公告)号：US20150296295A1
公开(公告)日：2015-10-15
申请号：US14250362
申请日：2014-04-10
申请人： ASIA VITAL COMPONENTS CO., LTD.
发明人： Bor-Haw Chang , Sung-Hsien Sun , Sung-Wei Sun
IPC分类号： H04R3/00
CPC分类号： H04R3/002 , G06F1/20 , G10K11/17821 , G10K11/1787 , G10K2210/11 , G10K2210/3212 , H04R1/1083 , H04R2410/07
摘要： A fan active noise self-lowering system includes a fan, a push assembly, at least one pickup unit and a digital signal processing unit. The pickup unit serves to capture the noise made by the fan to generate a noise input signal and transmit the noise input signal to the digital signal processing unit. The digital signal processing unit receives the noise input signal and processes the noise input signal to output a control signal for controlling the push winding assembly to operate so as to push the fan impeller of the fan to move up and down. Accordingly, the fan impeller will generate a reverse sonic wave to offset the noise.
摘要翻译：风扇主动噪声自降低系统包括风扇，推动组件，至少一个拾取单元和数字信号处理单元。拾取单元用于捕获由风扇产生的噪声以产生噪声输入信号，并将噪声输入信号传送到数字信号处理单元。数字信号处理单元接收噪声输入信号并处理噪声输入信号以输出控制信号，用于控制推挽组件的操作，以便推动风扇的风扇叶轮上下移动。因此，风扇叶轮将产生反向声波以抵消噪声。

10. 发明申请

US20090180637A1 Fan noise canceling system 有权
标题翻译：风扇降噪系统
公开(公告)号：US20090180637A1
公开(公告)日：2009-07-16
申请号：US12148721
申请日：2008-04-22
申请人： Fu-Cheng Su , Yuan-Liang Liao , Jyh-Ren Lee , Yi-Hong Liao
发明人： Fu-Cheng Su , Yuan-Liang Liao , Jyh-Ren Lee , Yi-Hong Liao
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/11
摘要： In a fan noise canceling system, a feedforward signal generated when a fan speed change occurs and a feedback signal read by a sensor are sent to a signal amplifying unit for signal amplification, and the amplified signals are then sent to a signal converting unit for converting into a digital signal. A hybrid controller receives and corrects the digital signals sent thereto, and conducts rapid convergence algorithm to derive a reverse digital signal. The reverse digital signal is sent back to the signal converting unit for converting into a reverse analog signal, which is then sent to the signal amplifying unit for power amplification and generating a control signal to drive a loudspeaker to produce a reverse acoustic wave, which cancels out wave of fan noise to effectively reduce fan noise without adversely affecting the heat dissipation effect of the fan.
摘要翻译：在风扇噪声消除系统中，当发生风扇速度变化时产生的前馈信号和由传感器读取的反馈信号被发送到用于信号放大的信号放大单元，然后将放大的信号发送到信号转换单元，以转换成为数字信号。混合控制器接收和校正发送给它的数字信号，并进行快速收敛算法以导出反向数字信号。反向数字信号被发回到信号转换单元，用于转换成反向模拟信号，然后发送到信号放大单元进行功率放大并产生控制信号以驱动扬声器产生反向声波，这消除了降低风扇噪音，有效降低风扇噪音，不会对风扇的散热效果产生不利影响。

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