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公开(公告)号：US12082136B2
公开(公告)日：2024-09-03
申请号：US17536337
申请日：2021-11-29
申请人： NEC Corporation
发明人： Shingo Watanabe
CPC分类号： H04W56/001 , H04L7/041
摘要： A radio communication apparatus makes it possible to prevent contents of communication from being intercepted. The radio communication apparatus includes a generation unit configured to generate a first unique word based on operation time information of the radio communication apparatus before communication with a radio communication apparatus is started, and generate, for each radio frame, an ith unique word (i: an integer equal to or greater than two) based on an (i−1)th unique word when the communication is started, and a transmitting unit configured to transmit a first radio frame including the first unique word and an ith radio frame including the ith unique word to the radio communication apparatus.
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公开(公告)号：US12052339B2
公开(公告)日：2024-07-30
申请号：US17955173
申请日：2022-09-28
发明人： Chao Li , Xingxin Zhang , Pengxin Bao , Xuehuan Wang
CPC分类号： H04L7/048 , H04L7/0037
摘要： Embodiments of this application disclose a data processing method, which can be applied to a clock synchronization network system. The system can correct, based on a clock frequency error or a time error, a data timestamp of a data packet collected by the system in a time period in which there is no reference clock, so that a corrected system time of the data packet is consistent with a reference time. This improves accuracy of data record.
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公开(公告)号：US12052338B2
公开(公告)日：2024-07-30
申请号：US18221112
申请日：2023-07-12
申请人： Qorvo US, Inc.
发明人： Andrew Fort
CPC分类号： H04L7/042 , H04B7/2643 , H04L69/22 , H04W56/001 , H04L69/18
摘要： A concurrent multistandard detection receiver with prepacket transmission detection capabilities is disclosed. In one aspect, a receiver is configured to switch between two different wireless protocols, alternately listening for incoming messages on one then the other protocol. For at least one listening period, the receiver uses two pretransmission detectors that are configured to detect predictable pretransmission emissions. A third detector may detect traditional transmissions. On detection of a signal that matches a predictable pretransmission emission or a traditional transmission, the receiver confirms that an incoming signal according to that standard is being received and acts in accordance with that signal. If no such emission or transmission was received, or if after trying to confirm the presence of an incoming signal fails, the receiver switches back to listening according to the other protocol.
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公开(公告)号：US20240231419A9
公开(公告)日：2024-07-11
申请号：US18488307
申请日：2023-10-17
CPC分类号： H04L7/04 , H04J3/0667
摘要： Clocking systems are disclosed. A clocking system can include first and second clock domains. Each clock domain can include circuitry with a counter. The clocking system can measure timing errors between these two domains by measuring a phase difference and determining a residual error. Based on the measured timing error, the clocking system can synchronize the time in the first and second clock domains by using at least one of the counters.
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公开(公告)号：US11990990B2
公开(公告)日：2024-05-21
申请号：US17710070
申请日：2022-03-31
CPC分类号： H04J3/0658 , H04L7/042 , H04L7/10
摘要： A relay device includes a plurality of physical ports (111-1 to 111-N) that receive frames, and a layer-2 protocol processing unit (113) that transfers the frame received by one of the physical ports (111-1 to 111-N) from at least one of the physical ports (111-1 to 111-N). The layer-2 protocol processing unit (113) has a filtering function for blocking frames other than a clock-time synchronization frame during transfer involving a port selected from the plurality of physical ports (111-1 to 111-N) as a port that relays only the clock-time synchronization frame used for synchronizing clock time.
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公开(公告)号：US20240146500A1
公开(公告)日：2024-05-02
申请号：US17978582
申请日：2022-11-01
IPC分类号： H04L7/00 , H04B10/079 , H04B10/118 , H04L7/033 , H04L7/04
CPC分类号： H04L7/0075 , H04B10/07955 , H04B10/118 , H04L7/0029 , H04L7/0331 , H04L7/048
摘要： A clock data recovery (CDR) apparatus can include an interpolator circuitry to interpolate an input received signal and to generate an output signal removing the sampling clock offsets. The apparatus can include timing error detector (TED) circuitry coupled to process the output signal and to provide a timing error as feedback to the interpolator circuitry, the timing error being adjusted by gain factors used in at least one of an automatic gain control (AGC) circuitry and an orthogonalization circuitry. The apparatus can include loop filter (LF) circuitry to filter the timing error to remove noise effects. The apparatus can include numerically controlled oscillator (NCO) circuitry to adjust for a basepoint and fractional interval used to adjust resampling coefficients within the interpolator circuitry.
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公开(公告)号：US20240137200A1
公开(公告)日：2024-04-25
申请号：US18381858
申请日：2023-10-18
IPC分类号： H04L7/04
CPC分类号： H04L7/04
摘要： Clocking systems are disclosed. A clocking system can include first and second clock domains. Each clock domain can include circuitry with a counter. The clocking system can measure timing errors between these two domains by measuring a phase difference and determining a residual error. Based on the measured timing error, the clocking system can synchronize the time in the first and second clock domains by using at least one of the counters.
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公开(公告)号：US11936767B2
公开(公告)日：2024-03-19
申请号：US17229094
申请日：2021-04-13
申请人： TTTech Auto AG
发明人： Hermann Kopetz , Stefan Poledna
CPC分类号： H04L7/04 , H04Q9/00 , H04Q2209/30
摘要： The invention relates to a real-time computer system for controlling a technical device, the real-time computer system comprising data acquisition components which are independent of each other, as well as non-secure data processing components for processing sensor data. A time server as well as a first communication system and a second communication system independent of it are provided, the time server periodically sending global time signals to the communication systems. Each data acquisition component has two communication controllers, wherein each data acquisition component is connected by two communication controllers via a communication line to the first communication system, and is connected by another communication controller to the second communication system via a communication line, such that each data acquisition component can transmit its sensor data to each of the two communication systems.
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公开(公告)号：US20240007264A1
公开(公告)日：2024-01-04
申请号：US18346189
申请日：2023-06-30
申请人： Innophase, Inc.
发明人： Claudio Anzil , Yang Xu , Farhad Zarkeshvari
CPC分类号： H04L7/04 , H04L27/361 , H04B7/0691
摘要： Transceiver array synchronization by receiving a clock signal and at least one synchronization pulse signal at each transceiver IC of a plurality of transceiver integrated circuit (IC) subarrays, wherein each transceiver IC subarray contains a respective set of serially connected transceiver ICs; and synchronizing the transceiver IC with other transceiver ICs of the respective set of serially connected transceiver ICs by resetting a delta-sigma modulator (DSM) circuit to a predetermined state in accordance with the received at least one synchronization pulse signal.
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公开(公告)号：US20230388097A1
公开(公告)日：2023-11-30
申请号：US18031886
申请日：2020-11-05
发明人： Yuki YAMADA , Takashi NAKANISHI , Shinichi YOSHIHARA , Go YAZAWA
CPC分类号： H04L7/0016 , H04L7/041
摘要： A relay device includes a device internal clock to indicate time; a memory to store information; a communication unit to transmit and receive a signal including a synchronization signal and a normal signal to and from a master and a slave. Further, there is a retention time processing unit to store synchronization signal information indicating the synchronization signal received by the communication unit in the memory and extract the synchronization signal information from the memory when a retention setting time longer than a first predetermined time elapses from the reception of the synchronization signal by using the time indicated by the device internal clock; and a transmission signal control unit to control the communication unit to stop transmitting the normal signal when the first predetermined time elapses from the reception of the synchronization signal and transmit the synchronization signal indicating the synchronization signal information.
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