公开(公告)号：US10071400B2

公开(公告)日：2018-09-11

申请号：US15186944

申请日：2016-06-20

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li ,  David P. Magee ,  Stephen John Fedigan

IPC: H01L41/09 ,  B08B7/02 ,  G02B27/00

CPC classification number: B08B7/028 ,  G02B27/0006

Abstract: 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.

公开(公告)号：US20160266379A1

公开(公告)日：2016-09-15

申请号：US15059529

申请日：2016-03-03

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li ,  Nabeel Fuad Khan

IPC: G02B27/00 ,  B06B1/02 ,  B08B7/02

CPC classification number: G02B27/0006 ,  B08B7/028 ,  B60S1/56 ,  H04N5/2171

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150016628A1

公开(公告)日：2015-01-15

申请号：US14323560

申请日：2014-07-03

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li

IPC: H04R29/00

CPC classification number: H04R3/005 ,  H04R1/406

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20210018748A1

公开(公告)日：2021-01-21

申请号：US17064645

申请日：2020-10-07

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li ,  David Patrick Magee ,  Stephen John Fedigan

IPC: G02B27/00 ,  B08B7/02 ,  B60S1/56

Abstract: 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.

公开(公告)号：US20180188526A1

公开(公告)日：2018-07-05

申请号：US15395665

申请日：2016-12-30

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li ,  David Patrick Magee ,  Stephen John Fedigan

IPC: G02B27/00 ,  B08B7/02 ,  B60S1/56 ,  B60R11/04

CPC classification number: G02B27/0006 ,  B08B7/028 ,  B60R11/04 ,  B60S1/56

Abstract: 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.

公开(公告)号：US20180031826A1

公开(公告)日：2018-02-01

申请号：US15225212

申请日：2016-08-01

Applicant: Texas Instruments Incorporated

Inventor： Stephen John Fedigan ,  David Patrick Magee ,  Yunhong Li

IPC: G02B27/00 ,  B08B7/02

CPC classification number: G02B27/0006 ,  B08B7/028 ,  G02B3/0075

Abstract: 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.

公开(公告)号：US09454003B1

公开(公告)日：2016-09-27

申请号：US14871750

申请日：2015-09-30

Applicant: Texas Instruments Incorporated

Inventor： Yunhong Li

IPC: G02B27/00 ,  G02B7/00 ,  G02B7/02

CPC classification number: G02B27/0006 ,  G02B7/021 ,  G02B7/026 ,  G02B13/06

Abstract: A lens assembly includes a first lens and a transducer attached to the first lens. A method of cleaning a lens includes vibrating the lens with a transducer attached to the lens. A method of making a lens assembly includes mounting a first lens above a second lens and attaching a transducer to the first lens.

Abstract translation: 透镜组件包括附接到第一透镜的第一透镜和传感器。 清洁透镜的方法包括用附接到透镜的换能器振动透镜。 制造透镜组件的方法包括将第一透镜安装在第二透镜上方并将换能器附接到第一透镜。

公开(公告)号：US20150063583A1

公开(公告)日：2015-03-05

申请号：US14010667

申请日：2013-08-27

Applicant: Texas Instruments Incorporated

Inventor： Chuan Ni ,  Yunhong Li ,  Long Yin Chen

IPC: G10K11/00

CPC classification number: G10K11/1786 ,  G10K11/17857 ,  G10K11/17885 ,  G10K2210/108 ,  G10K2210/111 ,  G10K2210/3046

Abstract: 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.

Abstract translation: 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。