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1. 发明授权

US09667191B2 Ultrasound lens cleaner driver with frequency selectable oscillator 有权
公开(公告)号：US09667191B2
公开(公告)日：2017-05-30
申请号：US14799309
申请日：2015-07-14
申请人： Texas Instruments Incorporated
发明人： Yunhong Li , Wei Ma
IPC分类号： H03B5/12 , H04N5/225 , G02B27/00
CPC分类号： H03B5/1203 , G02B27/0006 , H03B5/1231 , H03B5/1265 , H04N5/2171 , H04N5/2252 , H04N5/2254
摘要： A frequency selectable driver circuit (driver circuit) includes a current drive transistor between a first and second node for driving a frequency selectable oscillator (FSO) coupled therebetween that includes a first LC network including an inductor L2 and a capacitor C2 in series and a second LC network in series with the first LC network. The second LC network includes a capacitor bank including capacitors in parallel including switches for switching (selectable capacitors) and an inductor L3 in parallel to the capacitor bank. Values of L2 and C2 provide a low frequency point fL which the LC network is overall capacitive, and in a frequency range between fa and fb above fL with only a portion of selectable capacitors selected a capacitance of the capacitor bank and value of L3 results in an overall impedance for the second LC network that is capacitive between fa and fb and inductive elsewhere.

2. 发明授权

US09479867B2 Method and circuitry for direction of arrival estimation using microphone array with a sharp null 有权
标题翻译：使用具有尖锐零点的麦克风阵列的到达方向估计方法和电路
公开(公告)号：US09479867B2
公开(公告)日：2016-10-25
申请号：US14323560
申请日：2014-07-03
申请人： Texas Instruments Incorporated
发明人： Yunhong Li
IPC分类号： H04R3/00 , H04R1/40
CPC分类号： H04R3/005 , H04R1/406
摘要： A device is configured for identifying a direction of a sound. The device includes a controller comprising circuitry. The circuitry is configured to receive a first output from a first input device and a second output from a second input device. The circuitry is also configured to add a delay to the second output. The circuitry is also configured to compare the first output to the delayed second output in a plurality of directions to form a comparison. The circuitry is also configured to identify a number of null directions of the plurality of directions where a set of nulls exists based on the comparison.
摘要翻译：设备被配置为识别声音的方向。该装置包括一个包括电路的控制器。电路被配置为从第一输入设备接收第一输出和从第二输入设备接收第二输出。电路还被配置为向第二输出添加延迟。电路还被配置为在多个方向上比较第一输出与延迟的第二输出以形成比较。电路还被配置为基于比较来识别存在一组空值的多个方向的空值方向的数量。

3. 发明授权

US09257113B2 Method and system for active noise cancellation 有权
标题翻译：主动噪声消除的方法和系统
公开(公告)号：US09257113B2
公开(公告)日：2016-02-09
申请号：US14010667
申请日：2013-08-27
申请人： Texas Instruments Incorporated
发明人： Chuan Ni , Yunhong Li , Long Yin Chen
IPC分类号： G01K11/00 , G10K11/178
CPC分类号： G10K11/1786 , G10K11/17857 , G10K11/17885 , G10K2210/108 , G10K2210/111 , G10K2210/3046
摘要： From at least a first microphone, first microphone signals are received that represent first sound waves. From at least a second microphone, second microphone signals are received that represent second sound waves. In response to the first microphone signals, first noise in the first sound waves is estimated, and first cancellation signals are output for causing a speaker array to generate first additional sound waves via at least a first acoustic beam for cancelling at least some of the first noise. In response to the second microphone signals, second noise in the second sound waves is estimated, and second cancellation signals are output for causing the speaker array to generate second additional sound waves via at least a second acoustic beam for cancelling at least some of the second noise.
摘要翻译：从至少第一麦克风接收表示第一声波的第一麦克风信号。从至少第二麦克风接收代表第二声波的第二麦克风信号。响应于第一麦克风信号，估计第一声波中的第一噪声，并且输出第一抵消信号，以使扬声器阵列经由至少第一声束产生第一附加声波，以抵消第一声波中的至少一些噪声。响应于第二麦克风信号，估计第二声波中的第二噪声，并且输出第二抵消信号，以使扬声器阵列经由至少第二声束产生第二附加声波，以抵消第二声波中的至少一些第二声波噪声。

4. 发明申请

US20150016628A1 METHOD AND CIRCUITRY FOR DIRECTION OF ARRIVAL ESTIMATION USING MICROPHONE ARRAY WITH A SHARP NULL 有权
标题翻译：使用麦克风阵列进行近似估计的方法和电路与SHARP NULL
公开(公告)号：US20150016628A1
公开(公告)日：2015-01-15
申请号：US14323560
申请日：2014-07-03
申请人： Texas Instruments Incorporated
发明人： Yunhong Li
IPC分类号： H04R29/00
CPC分类号： H04R3/005 , H04R1/406
摘要： A device is configured for identifying a direction of a sound. The device includes a controller comprising circuitry. The circuitry is configured to receive a first output from a first input device and a second output from a second input device. The circuitry is also configured to add a delay to the second output. The circuitry is also configured to compare the first output to the delayed second output in a plurality of directions to form a comparison. The circuitry is also configured to identify a number of null directions of the plurality of directions where a set of nulls exists based on the comparison.
摘要翻译：设备被配置为识别声音的方向。该装置包括一个包括电路的控制器。电路被配置为从第一输入设备接收第一输出和从第二输入设备接收第二输出。电路还被配置为向第二输出添加延迟。电路还被配置为在多个方向上比较第一输出与延迟的第二输出以形成比较。电路还被配置为基于比较来识别存在一组空值的多个方向的空值方向的数量。

5. 发明授权

US11561390B2 Ultrasound lens structure cleaner architecture and method using standing and traveling waves 有权
公开(公告)号：US11561390B2
公开(公告)日：2023-01-24
申请号：US17064645
申请日：2020-10-07
申请人： Texas Instruments Incorporated
发明人： Yunhong Li , David Patrick Magee , Stephen John Fedigan
IPC分类号： G02B27/00 , B08B7/02 , B60S1/56 , B60R11/04
摘要： A lens structure system with a lens structure and a multi-segmented transducer coupled to the lens structure. Each segment in the plurality of segments has a first conductor and a second conductor, wherein the first conductor and the second conductor are electrically coupled to the segment. The system also has circuitry for applying a voltage to selected segments in the plurality of segments with standing wave signals and traveling wave signals.

6. 发明授权

US11415795B2 Ultrasound lens structure cleaner architecture and method 有权
公开(公告)号：US11415795B2
公开(公告)日：2022-08-16
申请号：US16834632
申请日：2020-03-30
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Stephen John Fedigan , David Patrick Magee , Yunhong Li
IPC分类号： G02B27/00 , G02B3/00 , B08B7/02
摘要： A lens structure system includes a lens structure and a multi-segmented transducer coupled to the lens structure. The multi-segmented transducer includes segments. Each segment is electrically coupled to a respective first conductor and a respective second conductor.

7. 发明申请

US20200233208A1 ULTRASOUND LENS STRUCTURE CLEANER ARCHITECTURE AND METHOD 审中-公开
公开(公告)号：US20200233208A1
公开(公告)日：2020-07-23
申请号：US16834632
申请日：2020-03-30
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Stephen John Fedigan , David Patrick Magee , Yunhong Li
IPC分类号： G02B27/00 , G02B3/00
摘要： A lens structure system includes a lens structure and a multi-segmented transducer coupled to the lens structure. The multi-segmented transducer includes segments. Each segment is electrically coupled to a respective first conductor and a respective second conductor.

8. 发明授权

US10071400B2 Ultrasonic lens cleaning with travelling wave excitation 有权
公开(公告)号：US10071400B2
公开(公告)日：2018-09-11
申请号：US15186944
申请日：2016-06-20
申请人： Texas Instruments Incorporated
发明人： Yunhong Li , David P. Magee , Stephen John Fedigan
IPC分类号： H01L41/09 , B08B7/02 , G02B27/00
CPC分类号： B08B7/028 , G02B27/0006
摘要： Disclosed examples include ultrasonic lens cleaning systems and driver circuits to clean a lens using four or more transducer segments mechanically coupled to the lens, in which the driver circuit provides phase shifted oscillating signals to the transducer segments to generate a mechanical traveling wave rotating around the center axis of the lens to vibrate the lens for improved ultrasonic cleaning.

9. 发明申请

US20160266379A1 ULTRASONIC LENS CLEANING SYSTEM WITH CURRENT SENSING 审中-公开
标题翻译：超声波透镜清洗系统
公开(公告)号：US20160266379A1
公开(公告)日：2016-09-15
申请号：US15059529
申请日：2016-03-03
申请人： Texas Instruments Incorporated
发明人： Yunhong Li , Nabeel Fuad Khan
IPC分类号： G02B27/00 , B06B1/02 , B08B7/02
CPC分类号： G02B27/0006 , B08B7/028 , B60S1/56 , H04N5/2171
摘要： Disclosed examples include ultrasonic cleaning systems, driver integrated circuits and methods for cleaning a lens, in which an oscillating drive signal is provided to an ultrasonic transducer and the driver controls the frequency of the drive signal according to a current sense signal representing a drive current flowing in the transducer. The driver sweeps the drive signal frequency and compares the sensed current values with predetermined profiles corresponding to a clean lens and a lens with one or more known contaminants, and generates the drive signal at one or more frequencies corresponding to peaks or valleys of the sensed current values or predetermined frequencies to promote cleaning of the lens.
摘要翻译：公开的示例包括超声波清洗系统，驱动器集成电路和用于清洁透镜的方法，其中向超声波换能器提供振荡驱动信号，并且驱动器根据表示驱动电流流动的电流感测信号来控制驱动信号的频率在传感器中。驱动器扫描驱动信号频率并将感测的电流值与对应于具有一个或多个已知污染物的干净透镜和透镜的预定曲线进行比较，并且以对应于感测电流的峰值或谷值的一个或多个频率产生驱动信号值或预定频率以促进透镜的清洁。

10. 发明授权

US10606069B2 Ultrasound lens structure cleaner architecture and method 有权
公开(公告)号：US10606069B2
公开(公告)日：2020-03-31
申请号：US15225212
申请日：2016-08-01
申请人： Texas Instruments Incorporated
发明人： Stephen John Fedigan , David Patrick Magee , Yunhong Li
IPC分类号： G02B27/00 , G02B3/00 , B08B7/02
摘要： A lens structure system. The system comprises a lens structure and a multi-segmented transducer coupled to the lens structure. The multi-segmented transducer comprises a plurality of segments. For each segment in the plurality of segments, there also is a first conductor and a second conductor electrically coupled to the segment.

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