Patents by Inventor Zhuyuan Liu
Zhuyuan Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11912292Abstract: The technology relates to partially redundant equipment architectures for vehicles able to operate in an autonomous driving mode. Aspects of the technology employ fallback configurations, such as two or more fallback sensor configurations that provide some minimum amount of field of view (FOV) around the vehicle. For instance, different sensor arrangements are logically associated with different operating domains of the vehicle. Fallback configurations for computing resources and/or power resources are also provided. Each fallback configuration may have different reasons for being triggered, and may result in different types of fallback modes of operation. Triggering conditions may relate, e.g., to a type of failure, fault or other reduction in component capability, the current driving mode, environmental conditions in the vicinity of vehicle or along a planned route, or other factors.Type: GrantFiled: November 22, 2021Date of Patent: February 27, 2024Assignee: Waymo LLCInventors: Emily Chi, Ryan Joseph Andrade, Andreas Wendel, Michael James, Christian Lauterbach, Etai Bruhis, Christopher Kennedy Ludwick, Alexander Zbrozek, Pieter Kapsenberg, Zhuyuan Liu, Daniel Rosenband
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Publication number: 20230185251Abstract: Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.Type: ApplicationFiled: February 15, 2023Publication date: June 15, 2023Inventors: Axel Simon, Zhuyuan Liu
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Patent number: 11604439Abstract: Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.Type: GrantFiled: December 28, 2020Date of Patent: March 14, 2023Assignee: WAYMO LLCInventors: Axel Simon, Zhuyuan Liu
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Publication number: 20220417104Abstract: Provided is an information backhaul method, which is applied to a networking unit in a network system. The network system includes multiple stages of networking units that are cascaded, and each of the multiple stages of networking units includes multiple optical ports. The information backhaul method includes: acquiring cascade information of a networking unit in a current stage, where the cascade information of the networking unit in the current stage includes optical port information and identification information of the networking unit in the current stage; and feeding back the cascade information of the networking unit in the current stage. Further provided are a data allocation method, a networking unit, a data allocation controller, a network system and a computer-readable storage medium.Type: ApplicationFiled: November 26, 2020Publication date: December 29, 2022Inventors: Diqiang ZHANG, Kai LIU, Zhuyuan LIU, Wenbin ZHOU, Chao DU
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Publication number: 20220408482Abstract: An LAA-based wireless transmission access method is disclosed including: acquiring, by a BBU, a signal format corresponding to an LBT startup indication, and delivering a corresponding LBT startup indication message; distributing, by a bridge unit, the startup indication message to an RRU; performing, by the RRU, spectrum scanning according to the signal format to obtain idle/busy state information of an unlicensed spectrum in the signal format, and reporting the same to the BBU via the bridge unit; determining, by the BBU, a preemptable unlicensed spectrum in the signal format according to the idle/busy state information, and delivering an occupancy message; delivering, by the bridge unit, the occupancy message to the RRU; determining, by the RRU, a signal source of the signal format in the occupancy message; if the signal source is a different manufacturer, switching to an intermediate radio frequency processing channel of a different manufacturer for transmission.Type: ApplicationFiled: October 29, 2020Publication date: December 22, 2022Inventors: Zhuyuan LIU, Diqiang ZHANG, Kai LIU, Yangfeng WANG, Yong PANG
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Publication number: 20220206444Abstract: Example embodiments relate to GNSS time synchronization in redundant systems. A redundant system configured with two subsystems may initially synchronize clocks from both subsystems to GNSS time from a GNSS receiver. The synchronization of the first subsystem's clock may involve using a first communication link that enables communication between the first subsystem and the GNSS receiver while the synchronization of the second subsystem's clock may involve using both the first communication link and a second communication link that enables communication between the subsystems. The redundant system may then synchronize the first subsystem's clock to the second subsystem's clock while the second subsystem's clock is still synchronized to GNSS time from the GNSS receiver based on timepulses traversing a pair of wires that connect the subsystems and the GNSS receiver.Type: ApplicationFiled: December 28, 2020Publication date: June 30, 2022Inventors: Axel Simon, Zhuyuan Liu
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Publication number: 20220080990Abstract: The technology relates to partially redundant equipment architectures for vehicles able to operate in an autonomous driving mode. Aspects of the technology employ fallback configurations, such as two or more fallback sensor configurations that provide some minimum amount of field of view (FOV) around the vehicle. For instance, different sensor arrangements are logically associated with different operating domains of the vehicle. Fallback configurations for computing resources and/or power resources are also provided. Each fallback configuration may have different reasons for being triggered, and may result in different types of fallback modes of operation. Triggering conditions may relate, e.g., to a type of failure, fault or other reduction in component capability, the current driving mode, environmental conditions in the vicinity of vehicle or along a planned route, or other factors.Type: ApplicationFiled: November 22, 2021Publication date: March 17, 2022Inventors: Emily Chi, Ryan Joseph Andrade, Andreas Wendel, Michael James, Christian Lauterbach, Etai Bruhis, Christopher Kennedy Ludwick, Alexander Zbrozek, Pieter Kapsenberg, Zhuyuan Liu, Daniel Rosenband
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Patent number: 11208111Abstract: The technology relates to partially redundant equipment architectures for vehicles able to operate in an autonomous driving mode. Aspects of the technology employ fallback configurations, such as two or more fallback sensor configurations that provide some minimum amount of field of view (FOV) around the vehicle. For instance, different sensor arrangements are logically associated with different operating domains of the vehicle. Fallback configurations for computing resources and/or power resources are also provided. Each fallback configuration may have different reasons for being triggered, and may result in different types of fallback modes of operation. Triggering conditions may relate, e.g., to a type of failure, fault or other reduction in component capability, the current driving mode, environmental conditions in the vicinity of vehicle or along a planned route, or other factors.Type: GrantFiled: December 11, 2018Date of Patent: December 28, 2021Assignee: Waymo LLCInventors: Emily Chi, Ryan Joseph Andrade, Andreas Wendel, Michael James, Christian Lauterbach, Etai Bruhis, Christopher Kennedy Ludwick, Alexander Zbrozek, Pieter Kapsenberg, Zhuyuan Liu, Daniel Rosenband
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Publication number: 20200180653Abstract: The technology relates to partially redundant equipment architectures for vehicles able to operate in an autonomous driving mode. Aspects of the technology employ fallback configurations, such as two or more fallback sensor configurations that provide some minimum amount of field of view (FOV) around the vehicle. For instance, different sensor arrangements are logically associated with different operating domains of the vehicle. Fallback configurations for computing resources and/or power resources are also provided. Each fallback configuration may have different reasons for being triggered, and may result in different types of fallback modes of operation. Triggering conditions may relate, e.g., to a type of failure, fault or other reduction in component capability, the current driving mode, environmental conditions in the vicinity of vehicle or along a planned route, or other factors.Type: ApplicationFiled: December 11, 2018Publication date: June 11, 2020Inventors: Emily Chi, Ryan Joseph Andrade, Andreas Wendel, Michael James, Christian Lauterbach, Etai Bruhis, Christopher Kennedy Ludwick, Alexander Zbrozek, Pieter Kapsenberg, Zhuyuan Liu, Daniel Rosenband
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Patent number: 8504976Abstract: In an example embodiment, the system obtains the mutual inductance (e.g., Mij) between a quiet I/O buffer and each switching I/O buffer on a PLD from an automatic SSN measurement system. The system calculates the corrected mutual inductance between the quiet I/O buffer and each switching I/O buffer by multiplying the mutual inductance by a correction factor (e.g., ?j). The system multiplies each corrected mutual inductance by the rate of current flowing through the switching I/O buffer to obtain an induced voltage resulting from the switching I/O buffer. The system sums the induced voltages for all the switching I/O buffers on the PLD to obtain an estimate of total induced voltage caused in the quiet I/O buffer by all switching I/O buffers. The correction factor is based on bench measurements and depends on the amplitude of the simultaneous switching noise affecting each switching I/O buffer.Type: GrantFiled: May 30, 2012Date of Patent: August 6, 2013Assignee: Altera CorporationInventors: Zhuyuan Liu, Geping Liu, San Wong
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Publication number: 20120239338Abstract: In an example embodiment, the system obtains the mutual inductance (e.g., Mij) between a quiet I/O buffer and each switching I/O buffer on a PLD from an automatic SSN measurement system. The system calculates the corrected mutual inductance between the quiet I/O buffer and each switching I/O buffer by multiplying the mutual inductance by a correction factor (e.g., ?j). The system multiplies each corrected mutual inductance by the rate of current flowing through the switching I/O buffer to obtain an induced voltage resulting from the switching I/O buffer. The system sums the induced voltages for all the switching I/O buffers on the PLD to obtain an estimate of total induced voltage caused in the quiet I/O buffer by all switching I/O buffers. The correction factor is based on bench measurements and depends on the amplitude of the simultaneous switching noise affecting each switching I/O buffer.Type: ApplicationFiled: May 30, 2012Publication date: September 20, 2012Inventors: Zhuyuan Liu, Geping Liu, San Wong
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Patent number: 8214781Abstract: In an example embodiment, the system obtains the mutual inductance (e.g., Mij) between a quiet I/O buffer and each switching I/O buffer on a PLD from an automatic SSN measurement system. The system calculates the corrected mutual inductance between the quiet I/O buffer and each switching I/O buffer by multiplying the mutual inductance by a correction factor (e.g., ?j). The system multiplies each corrected mutual inductance by the rate of current flowing through the switching I/O buffer to obtain an induced voltage resulting from the switching I/O buffer. The system sums the induced voltages for all the switching I/O buffers on the PLD to obtain an estimate of total induced voltage caused in the quiet I/O buffer by all switching I/O buffers. The correction factor is based on bench measurements and depends on the amplitude of the simultaneous switching noise affecting each switching I/O buffer.Type: GrantFiled: September 10, 2008Date of Patent: July 3, 2012Assignee: Altera CorporationInventors: Zhuyuan Liu, Geping Liu, San Wong