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1. 发明授权

US09608848B2 Communicating through physical vibration 有权
公开(公告)号：US09608848B2
公开(公告)日：2017-03-28
申请号：US14920079
申请日：2015-10-22
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Mahanth K. Gowda
IPC分类号： H03K7/08 , H04L25/49 , H04B1/04
CPC分类号： H04B1/16 , H04B1/04 , H04B11/00 , H04L25/4902
摘要： A data transmitter includes a vibration motor and a switch to regulate voltage from a direct-current (DC) power supply to the vibration motor. A microcontroller generates a pulse width modulation signal with which to drive the switch and regulate the voltage to the vibration motor in a sinusoidal manner, to generate data as symbols from vibrations that form a series of bits from the vibration motor. The microcontroller may also cancel and jam a sound of vibration (SoV) created by the vibration motor. A data receiver includes a vibration sensor to sample data from vibrations in an incoming signal at a predetermined sampling rate, and a microcontroller, coupled to the vibration sensor, to control the sampling rate through an inter-integrated circuit (I2C) protocol or the like. A memory card, coupled to the microcontroller, stores the data with a serial peripheral interface (SPI) protocol or the like.

2. 发明申请

US20170179986A1 COMMUNICATING THROUGH PHYSICAL VIBRATION 审中-公开
公开(公告)号：US20170179986A1
公开(公告)日：2017-06-22
申请号：US15449621
申请日：2017-03-03
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Mahanth K. Gowda
IPC分类号： H04B1/16 , H04B11/00
CPC分类号： H04B1/16 , H04B1/04 , H04B11/00 , H04L25/4902
摘要： A data receiver includes a vibration sensor to sample data from vibrations in an incoming signal at a predetermined sampling rate, and a microcontroller, coupled to the vibration sensor, to control the sampling rate through an inter-integrated circuit (I2C) protocol or the like. A memory card, coupled to the microcontroller, stores the data with a serial peripheral interface (SPI) protocol or the like.

3. 发明授权

US10672416B2 Causing microphones to detect inaudible sounds and defense against inaudible attacks 审中-公开
公开(公告)号：US10672416B2
公开(公告)日：2020-06-02
申请号：US16163172
申请日：2018-10-17
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Haitham Al Hassanieh
IPC分类号： G10L21/06 , G10K11/178 , B06B1/02 , H04B1/04 , H04R1/32 , H04R1/40 , H04B1/20 , G10K9/122 , G10K15/02 , H04R27/00
摘要： An audio transmitter includes a first ultrasonic speaker associated with a first channel; a second ultrasonic speaker co-located with the first ultrasonic speaker and associated with a second channel; and a waveform generator to: frequency modulate a first inaudible signal at a first ultrasonic frequency, to generate a modulated inaudible signal; drive, over the first channel, the first ultrasonic speaker with the modulated inaudible signal; and drive, over the second channel, the second ultrasonic speaker with a second inaudible signal at a second ultrasonic frequency so that a combination of the modulated inaudible signal and the second inaudible signal arrive at a microphone system. The second ultrasonic frequency is selected to frequency shift the modulated inaudible signal, upon demodulation by hardware of the microphone system, causing non-linearities of the hardware to translate the first ultrasonic frequency to below a low-pass filter cutoff frequency that is recordable by the microphone system.

4. 发明申请

US20160119168A1 COMMUNICATING THROUGH PHYSICAL VIBRATION 有权
标题翻译：通过物理振动传播
公开(公告)号：US20160119168A1
公开(公告)日：2016-04-28
申请号：US14920079
申请日：2015-10-22
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Mahanth K. Gowda
IPC分类号： H04L25/49 , H04B1/16 , H04B1/04
CPC分类号： H04B1/16 , H04B1/04 , H04B11/00 , H04L25/4902
摘要： A data transmitter includes a vibration motor and a switch to regulate voltage from a direct-current (DC) power supply to the vibration motor. A microcontroller generates a pulse width modulation signal with which to drive the switch and regulate the voltage to the vibration motor in a sinusoidal manner, to generate data as symbols from vibrations that form a series of bits from the vibration motor. The microcontroller may also cancel and jam a sound of vibration (SoV) created by the vibration motor. A data receiver includes a vibration sensor to sample data from vibrations in an incoming signal at a predetermined sampling rate, and a microcontroller, coupled to the vibration sensor, to control the sampling rate through an inter-integrated circuit (I2C) protocol or the like. A memory card, coupled to the microcontroller, stores the data with a serial peripheral interface (SPI) protocol or the like.
摘要翻译：数据发射器包括振动马达和用于调节来自直流（DC）电源到振动马达的电压的开关。微控制器产生脉冲宽度调制信号，通过该脉冲宽度调制信号驱动开关并以正弦方式调节振动电机的电压，以产生来自振动电动机形成一系列位的振动的符号的数据。微控制器还可以消除和阻塞由振动电机产生的振动声（SoV）。数据接收机包括一个振动传感器，用于以预定采样速率从输入信号中的振动中采集数据;以及微控制器，耦合到振动传感器，以通过集成电路（I2C）协议等来控制采样率。耦合到微控制器的存储卡通过串行外设接口（SPI）协议等存储数据。

5. 发明申请

US20190122691A1 CAUSING MICROPHONES TO DETECT INAUDIBLE SOUNDS AND DEFENSE AGAINST INAUDIBLE ATTACKS 审中-公开
公开(公告)号：US20190122691A1
公开(公告)日：2019-04-25
申请号：US16163172
申请日：2018-10-17
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Haitham Al Hassanieh
IPC分类号： G10L21/06 , G10K11/178 , H04R1/32 , H04B1/04 , B06B1/02
摘要： An audio transmitter includes a first ultrasonic speaker associated with a first channel; a second ultrasonic speaker co-located with the first ultrasonic speaker and associated with a second channel; and a waveform generator to: frequency modulate a first inaudible signal at a first ultrasonic frequency, to generate a modulated inaudible signal; drive, over the first channel, the first ultrasonic speaker with the modulated inaudible signal; and drive, over the second channel, the second ultrasonic speaker with a second inaudible signal at a second ultrasonic frequency so that a combination of the modulated inaudible signal and the second inaudible signal arrive at a microphone system. The second ultrasonic frequency is selected to frequency shift the modulated inaudible signal, upon demodulation by hardware of the microphone system, causing non-linearities of the hardware to translate the first ultrasonic frequency to below a low-pass filter cutoff frequency that is recordable by the microphone system.

6. 发明授权

US11264047B2 Causing a voice enabled device to defend against inaudible signal attacks 有权
公开(公告)号：US11264047B2
公开(公告)日：2022-03-01
申请号：US16858200
申请日：2020-04-24
申请人： Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Haitham Al Hassanieh
IPC分类号： G10L21/06 , G10K11/178 , B06B1/02 , H04B1/04 , H04R1/32 , H04R1/40 , H04B1/20 , G10K9/122 , G10K15/02 , H04R27/00
摘要： A voice enabled device includes a transducer to capture multiple inaudible signals received from multiple ultrasonic speakers and audio recording electronics to process the multiple inaudible signals to generate digital output samples, which are recorded sound data comprising non-linearities from frequency-shifted versions of the multiple inaudible signals to within an audible frequency range. A processing device is to detect, within the recorded sound data, at least a portion of the non-linearities, e.g., via: comparison of the recorded sound data with expected patterns from an audible audio signal generated by human voice; and detection of non-linear variations within the recorded sound data as compared to the expected patterns. In response to the detection, the processing device is further to suppress an action programmed for response to a voice command corresponding to the recorded sound data.

7. 发明申请

US20200251125A1 CAUSING A VOICE ENABLED DEVICE TO DEFEND AGAINST INAUDIBLE SIGNAL ATTACKS 审中-公开
公开(公告)号：US20200251125A1
公开(公告)日：2020-08-06
申请号：US16858200
申请日：2020-04-24
申请人： Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Haitham Al Hassanieh
IPC分类号： G10L21/06 , G10K11/178 , B06B1/02 , H04B1/04 , H04R1/32 , H04R1/40 , H04B1/20 , G10K9/122 , G10K15/02
摘要： A voice enabled device includes a transducer to capture multiple inaudible signals received from multiple ultrasonic speakers and audio recording electronics to process the multiple inaudible signals to generate digital output samples, which are recorded sound data comprising non-linearities from frequency-shifted versions of the multiple inaudible signals to within an audible frequency range. A processing device is to detect, within the recorded sound data, at least a portion of the non-linearities, e.g., via: comparison of the recorded sound data with expected patterns from an audible audio signal generated by human voice; and detection of non-linear variations within the recorded sound data as compared to the expected patterns. In response to the detection, the processing device is further to suppress an action programmed for response to a voice command corresponding to the recorded sound data.

8. 发明授权

US10128880B2 Communicating through physical vibration 有权
公开(公告)号：US10128880B2
公开(公告)日：2018-11-13
申请号：US15449621
申请日：2017-03-03
申请人： The Board of Trustees of the University of Illinois
发明人： Nirupam Roy , Romit Roy Choudhury , Mahanth K. Gowda
IPC分类号： H04B1/16 , H04L25/49 , H04B1/04 , H04B11/00
摘要： A data receiver includes a vibration sensor to sample data from vibrations in an incoming signal at a predetermined sampling rate, and a microcontroller, coupled to the vibration sensor, to control the sampling rate through an inter-integrated circuit (I2C) protocol or the like. A memory card, coupled to the microcontroller, stores the data with a serial peripheral interface (SPI) protocol or the like.

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