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公开(公告)号：EP3531610A1
公开(公告)日：2019-08-28
申请号：EP17867877.7
申请日：2017-11-03
发明人： LV, Jingfei , WANG, Jinhui , XU, Chuan
IPC分类号： H04L7/00
摘要： A frequency synchronization method is provided. The method includes: receiving, by a slave clock, a first pulse signal and a second pulse signal; determining, by the slave clock based on a first phase difference, a second phase difference, a first delay, and a second delay, that a frequency offset of the slave clock relative to the master clock is equal to a first frequency offset, where the first phase difference is a difference between a phase of a third pulse signal generated by the slave clock and a phase of the first pulse signal received by the slave clock, and the second phase difference is a difference between a phase of a fourth pulse signal generated by the slave clock and a phase of the second pulse signal received by the slave clock; and calibrating, by the slave clock, frequency of the slave clock based on the first frequency offset. In addition, a corresponding slave clock is further provided. The foregoing solution helps improve frequency synchronization precision.
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公开(公告)号：EP3404866A1
公开(公告)日：2018-11-21
申请号：EP16893063.4
申请日：2016-03-11
发明人： WANG, Jinhui
IPC分类号： H04L7/00
CPC分类号： H04J3/0685 , H03L7/00 , H04J3/0688 , H04J3/0691 , H04J3/0697
摘要： This application provides a device and a method for supporting clock transfer of multiple clock domains. The device includes: N phase frequency detectors, N filters, N clock reconstructors, and N clock domain interfaces, where N is an integer greater than or equal to 2, the N clock domain interfaces are in a one-to-one correspondence with the N phase frequency detectors, the N filters, and the N clock reconstructors, the N phase frequency detectors are respectively connected to N clock sources, and at least two clock sources of the N clock sources are different. The foregoing device can reconstruct multiple different clock signals by transferring a common reference clock signal, digitized phase difference information, and frequency difference information, and apply the clock signals to clock domain interfaces of various clock domains, so as to flexibly adapt to multiple different clock domains, implement that a single device simultaneously supports clock transfer of multiple clock domains, and flexibly satisfy user demands without adding or replacing devices.
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公开(公告)号：EP4333297A1
公开(公告)日：2024-03-06
申请号：EP22804095.2
申请日：2022-05-23
发明人： WU, Wei , LI, Hao , WANG, Jinhui , LI, Wei
摘要： A resonator is provided. The resonator includes a resonance layer, a substrate, and a barrier layer. The barrier layer is located on the substrate, and the barrier layer and the substrate form a cavity. The cavity is configured to accommodate the resonance layer. The barrier layer includes a top wall and a side wall, and an inner surface of the side wall surrounds the resonance layer. An outer surface of the side wall includes a groove, and the groove surrounds the side wall. Based on the foregoing implementation, complexity of a machining process of the resonator is reduced, machining costs are reduced, and reliability of the resonator is improved on the basis of ensuring miniaturization of the resonator.
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公开(公告)号：EP4322406A1
公开(公告)日：2024-02-14
申请号：EP22794237.2
申请日：2022-01-28
发明人： WU, Wei , LI, Wei , WANG, Jinhui , LI, Hao , SU, Hongliang
IPC分类号： H03H9/02
摘要： This application discloses a resonator and an electronic component and relates to the field of acoustic wave frequency selection technologies. The resonator includes a substrate (1), a first electrode layer (2), a piezoelectric layer (3) and a second electrode layer (4) sequentially stacked. At least one of the first electrode layer (2) and the second electrode layer (4) includes a first protrusion (6). The first protrusion (6) protrudes toward the piezoelectric layer (3). The first protrusion (6) includes a first edge protrusion (61), the first edge protrusion (61) surrounds at least a part of a side of the piezoelectric layer (3). According to this application, acoustic waves can be converged at a central axis of the piezoelectric layer (3), to enhance a convergence effect of the acoustic waves, reduce transverse leakage of the acoustic waves, increase a Q value of a bulk acoustic wave resonator, and reduce an insertion loss. In addition, enhancement of the convergence effect of the acoustic waves can reduce a spurious acoustic wave, suppress a transverse spurious mode, and improve a phase noise characteristic of the bulk acoustic wave resonator, thereby achieving a pure frequency of an electrical signal output by the bulk acoustic wave resonator.
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公开(公告)号：EP4064634A1
公开(公告)日：2022-09-28
申请号：EP20900774.9
申请日：2020-11-17
发明人： WANG, Jinhui , CHEN, Cong , LV, Jingfei
摘要： Embodiments of this application disclose a fiber link detection method. The method may be applied to an optical communications network. The optical communications network includes a first network device and a second network device. A first interface of the first network device communicates with a second interface of the second network device over a first fiber link. Both the first network device and the second network device support the PTP protocol. The first network device is a slave device, and the second network device is a master device. When the first interface of the first network device and the second interface of the second network device perform time synchronization by using the PTP protocol, if the first fiber link includes a third network device that does not support PTP, time synchronization precision is affected. In embodiments of this application, the first network device may determine whether the first fiber link includes the third network device that does not support PTP. When it is determined that the first fiber link includes the third network device, corresponding processing may be further performed, so as to improve time synchronization precision.
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公开(公告)号：EP3480997A1
公开(公告)日：2019-05-08
申请号：EP16912159.7
申请日：2016-08-10
发明人： LUO, Junfeng , WANG, Jinhui , CHENG, Zhu , WU, Feng
IPC分类号： H04L7/00
摘要： Embodiments of this application provide a time synchronization method and a device. The method includes: generating, by a first device, a first time synchronization frame according to a first coding scheme, where the first time synchronization frame includes a first frame header and a first time of day TOD, the first frame header carries an identifier of the first coding scheme, and the first coding scheme defines a boundary of the first time synchronization frame and a location of the first TOD in the first time synchronization frame; and sending, by the first device, the first time synchronization frame to a second device by using a first single line, so as to trigger the second device to identify the first time synchronization frame according to the identifier of the first coding scheme, obtain the first TOD from the first time synchronization frame, and trace a time of the first device according to the first TOD. With the time synchronization method and the device in the embodiments of this application, line resources can be saved.
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