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公开(公告)号：US11852722B2
公开(公告)日：2023-12-26
申请号：US17441406
申请日：2020-04-09
申请人： Robert Bosch GmbH
CPC分类号： G01S15/60 , G01S7/52031 , G01S7/52036 , G01S15/36
摘要： A method for evaluating an height of an object in the surrounding environment of a vehicle, using ultrasonic signals acquired by an ultrasonic sensor mounted on the vehicle. In a measurement cycle, a first ultrasonic signal is acquired as an edge reflection or as a directly traveling echo of an object. An expectation window is calculated for an associated interior-corner reflection. A second ultrasonic signal acquired in the expectation window is recognized as an interior-corner reflection associated with the first ultrasonic signal. The first and second ultrasonic signals are combined to form a signal group. A significance is determined for each ultrasonic signal. The signal group is assigned to a first or second echo group. The rates of the assignment to the first and to the second echo group are determined over a number of measurement cycles. An evaluation of the height is based on the first and second rates.
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公开(公告)号：US20240138681A1
公开(公告)日：2024-05-02
申请号：US18280200
申请日：2022-03-02
发明人： Danhua Zhao
CPC分类号： A61B5/0097 , G01S7/52019 , G01S7/52031 , G01S7/52044
摘要： A method for performing acoustic imaging and measurements may include generating a nonlinear frequency modulation (NLFM) chirp waveform based on a frequency response of at least one transducer. The method may further include generating an apodized signal by applying a window function to the NLFM chirp waveform. The method may further include exciting the at least one transducer with the apodized signal. The method may further include compressing received signals by using one or more matched filters.
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公开(公告)号：US5501222A
公开(公告)日：1996-03-26
申请号：US242536
申请日：1994-05-13
申请人： Keith A. Briggs
发明人： Keith A. Briggs
CPC分类号： G01S15/894 , G01S15/8977 , G01S15/8993 , G01S7/52031
摘要： A transmitter transmits ultrasound signals towards a region to be imaged. The reflected ultrasound signals from the region are detected by a receiver. The transmitter and/or receiver is or are moved relative to the region to create Doppler phase shift. The time compression/expansion caused by the Doppler phase shift is dewarped by filtering in order to recover the amplitudes of the ultrasound signals reflected from different portions of the region for imaging.
摘要翻译： 发射机向待成像的区域发送超声信号。 来自该区域的反射超声信号由接收器检测。 发射机和/或接收机相对于该区域移动或者被移动以产生多普勒相移。 由多普勒相位引起的时间压缩/扩张被滤波所消除，以便恢复从用于成像的区域的不同部分反射的超声波信号的振幅。
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公开(公告)号：US20240299013A1
公开(公告)日：2024-09-12
申请号：US18429837
申请日：2024-02-01
发明人： Takehiro Shimono , Takahide Terada
CPC分类号： A61B8/54 , G01S7/52028 , G01S7/52031
摘要： A passband characteristic of a band pass filter is adapted to an examinee while a texture of an ultrasound image is maintained or is not significantly changed. A passband characteristic of a BPF is dynamically changed in accordance with a depth of an observation point (reception focus). The passband characteristic includes convex forms, and the convex forms have peaks as highest points in a gain axis direction and have widths in a frequency axis direction. A peak position is relatively changed with respect to the width while an upper limit and a lower limit of the width are substantially maintained. Accordingly, the convex forms are biased to a low-frequency side or a high-frequency side.
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公开(公告)号：US11923889B2
公开(公告)日：2024-03-05
申请号：US17935579
申请日：2022-09-27
发明人： Ricky Lap Kei Cheung , Luzhou Xu , Lixi Wu , Hsing Kuo Lo , Yuan Su
CPC分类号： H04B1/525 , G01S7/02 , G01S7/35 , G01S7/352 , G01S7/354 , G01S7/52 , G01S7/52023 , G01S7/5203 , G01S7/52031 , H04B1/123 , H04B1/44 , G01S13/341
摘要： Various embodiments include methods and systems having detection apparatus operable to cancel or reduce leakage signal originating from a source signal being generated and transmitted from a transmitter. A leakage cancellation signal can be generated digitally, converted to an analog signal, and then subtracted in the analog domain from a received signal to provide a leakage-reduced signal for use in detection and analysis of objects. A digital cancellation signal may be generated by generating a cancellation signal in the frequency domain and converting it to the time domain. Optionally, an estimate of a residual leakage signal can be generated and applied to reduce residual leakage remaining in the leakage-reduced signal. Additional apparatus, systems, and methods can be implemented in a variety of applications.
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公开(公告)号：US20180149746A1
公开(公告)日：2018-05-31
申请号：US15822038
申请日：2017-11-24
申请人： 8517401 Canada Inc.
CPC分类号： G01S15/8977 , A61B8/52 , G01S7/52019 , G01S7/52026 , G01S7/52031 , G01S7/52046 , G01S7/52093 , G01S7/531 , G01S15/8906 , G01S15/8913 , G01S15/8959 , G06F19/321 , G16H50/50 , H04B1/709 , H04B2201/70715 , H04B2201/70716 , H04J13/0033 , H04L27/364 , H04L27/38
摘要： An imaging system that utilizes deterministic bit sequences modulated onto an in-phase component of a carrier frequency and continuously transmitted via a transducer and received for imaging a medium and/or environment is provided. The received signal is demodulated by an in-phase demodulator and a quadrature demodulator and the demodulated components are processed to provide a spatial mapping of a medium or environment being imaged.
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公开(公告)号：US20190231320A1
公开(公告)日：2019-08-01
申请号：US16334792
申请日：2017-09-22
发明人： DAVID WESLEY CLARK
CPC分类号： A61B8/5276 , A61B8/14 , A61B8/4488 , A61B8/463 , A61B8/485 , G01S7/52022 , G01S7/52031 , G01S7/52042 , G01S7/52085 , G01S7/52095 , G01S15/8915 , G01S15/8981
摘要： An ultrasonic diagnostic imaging for analyzing shear wave characteristics utilizes a background motion compensation subsystem which acts as a spatial filter of pulse-to-pulse autocorrelation phases over the ROI of tracking pulse vectors to compensate for background motion. The subsystem is configured to compute the sum of all lag-1 autocorrelations of tracking line ensemble data over the tracking ROI, for each PRI. The inventive technique does not significantly reduce sensitivity to shear waves, because the shear wave is spatially smaller than the ROI.
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公开(公告)号：US09885780B2
公开(公告)日：2018-02-06
申请号：US14222398
申请日：2014-03-21
发明人： Hisafumi Ebisawa
CPC分类号： G01S7/52038 , A61B8/485 , G01S7/52026 , G01S7/52031 , G01S7/52036 , G01S7/52046 , G01S7/52047 , G01S15/8915 , G01S15/8938 , G01S15/895 , G01S15/8963 , G01S15/8979 , G01S15/8993 , G01S15/8995
摘要： An object information acquiring apparatus includes a probe configured to irradiate ultrasonic waves to an object, receive ultrasonic echoes, and convert the ultrasonic echoes into electric signals, a scanning unit configured to cause the probe to perform back-and-forth scanning on the object, an ultrasonic control unit configured to control irradiation of ultrasonic waves, a signal processing unit configured to obtain an ultrasonic, and a combining unit configured to combine a plurality of ultrasonic images. The scanning unit causes the probe to perform back-and-forth scanning on the object such that regions subjected to ultrasonic irradiation performed by the probe in forward and backward paths in the back-and-forth scanning overlap with each other. The ultrasonic control unit employs different methods for irradiating ultrasonic waves in the forward and backward paths. The combining unit combines a plurality of ultrasonic images with one another.
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公开(公告)号：US08343055B2
公开(公告)日：2013-01-01
申请号：US12480874
申请日：2009-06-09
申请人： Masanori Kunita
发明人： Masanori Kunita
IPC分类号： A61B8/14
CPC分类号： G01S7/52031 , A61B8/06 , A61B8/08 , A61B8/488 , G01S15/586 , G01S15/8959
摘要： An FSK modulator 20 applies FSK modulation processing to an RF wave supplied from an RF wave oscillator 22, by means of frequency shift keying (FSK) based on a periodical signal sequence supplied from a pattern generator 24, to thereby generate an FSK continuous wave. The continuous wave output from the FSK modulator 20 is delayed in delay circuits 26I and 26Q and is then supplied, as a reference signal, to each of mixers of a receiving mixer 30. Each of the delay circuits 26I and 26Q delays the continuous wave by a delay amount in accordance with a depth of a target position and outputs a delayed reference signal. Thus, demodulation processing is performed with a correlation between a reception signal from the target position and the reference signal being enhanced, and Doppler information from the target position is selectively extracted by a Doppler information analyzing unit 44.
摘要翻译： FSK调制器20通过基于从模式发生器24提供的周期信号序列的频移键控（FSK）对从RF波形振荡器22提供的RF波应用FSK调制处理，从而生成FSK连续波。 来自FSK调制器20的连续波输出在延迟电路26I和26Q中延迟，然后作为参考信号提供给接收混频器30的每个混频器。延迟电路26I和26Q中的每一个延迟连续波由 根据目标位置的深度的延迟量，并输出延迟的参考信号。 因此，利用来自目标位置的接收信号和参考信号被增强之间的相关性进行解调处理，并且由多普勒信息分析单元44选择性地提取来自目标位置的多普勒信息。
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公开(公告)号：US20090312636A1
公开(公告)日：2009-12-17
申请号：US12480874
申请日：2009-06-09
申请人： Masanori Kunita
发明人： Masanori Kunita
IPC分类号： A61B8/00
CPC分类号： G01S7/52031 , A61B8/06 , A61B8/08 , A61B8/488 , G01S15/586 , G01S15/8959
摘要： An FSK modulator 20 applies FSK modulation processing to an RF wave supplied from an RF wave oscillator 22, by means of frequency shift keying (FSK) based on a periodical signal sequence supplied from a pattern generator 24, to thereby generate an FSK continuous wave. The continuous wave output from the FSK modulator 20 is delayed in delay circuits 26I and 26Q and is then supplied, as a reference signal, to each of mixers of a receiving mixer 30. Each of the delay circuits 26I and 26Q delays the continuous wave by a delay amount in accordance with a depth of a target position and outputs a delayed reference signal. Thus, demodulation processing is performed with a correlation between a reception signal from the target position and the reference signal being enhanced, and Doppler information from the target position is selectively extracted by a Doppler information analyzing unit 44.
摘要翻译： FSK调制器20通过基于从模式发生器24提供的周期信号序列的频移键控（FSK）对从RF波形振荡器22提供的RF波应用FSK调制处理，从而生成FSK连续波。 来自FSK调制器20的连续波输出在延迟电路26I和26Q中延迟，然后作为参考信号提供给接收混频器30的每个混频器。延迟电路26I和26Q中的每一个延迟连续波由 根据目标位置的深度的延迟量，并输出延迟的参考信号。 因此，利用来自目标位置的接收信号和参考信号被增强之间的相关性进行解调处理，并且由多普勒信息分析单元44选择性地提取来自目标位置的多普勒信息。
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