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公开(公告)号：US10693451B2
公开(公告)日：2020-06-23
申请号：US16273810
申请日：2019-02-12
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Youhei Sekiya , Hiroyuki Mori , Tomohisa Kishigami
Abstract: A ringing suppressor circuit is connected to a differential signal transmission line that includes a high potential signal line and low potential signal line pair for transmitting high and low level differential signals, and includes a ringing suppressor and a stopper. When the differential signal changes to a high level, the ringing suppressor suppresses ringing by lowering the impedance between the signal lines by turning ON of a switching element. When a differential signal voltage drops below a voltage lowering determination voltage, the stopper stops the impedance lowering function of the ringing suppressor by turning OFF another switching element.
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公开(公告)号：US10224925B2
公开(公告)日：2019-03-05
申请号：US15741075
申请日：2016-06-08
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
Abstract: A communication node is connected to a transmission line which transmits a differential signal changeable between a high level and a low level and has a high potential signal line and a low potential signal line as a pair of signal lines. The communication node includes: an inter-line potential detector that detects an intermediate potential between the pair of signal lines; a node potential detector that detects an intermediate potential of an operation power source voltage which is supplied to the communication node; and a voltage adjuster that detects a difference between the intermediate potential detected by the inter-line potential detector and the intermediate potential detected by the node potential detector, and adjusts the operation power source voltage in accordance with the difference.
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公开(公告)号：US08861621B2
公开(公告)日：2014-10-14
申请号：US13973203
申请日：2013-08-22
Applicant: Denso Corporation
Inventor： Hiroyuki Mori , Naoki Kamikawa , Masayoshi Satake , Tomohisa Kishigami , Tomoyuki Koike
Abstract: In a receiver circuit, a binary signal is generated based on a signal level of a received signal that has been received via a transmission line from a driver of a transmitter circuit. Then, a first stable state and a second stable state are detected based on a reference signal whose signal level changes in accordance with the received signal. In the first stable state, the received signal is stable at a first signal level. In the second stable state, the received signal is stable at a second signal level. When the first stable state is detected and the received signal is changed from the first signal level into the second signal level, the generated binary signal is retained at a signal level corresponding to the second signal level, until the second stable state is detected.
Abstract translation: 在接收机电路中，基于已经经由发射机电路的驱动器的传输线接收的接收信号的信号电平来生成二进制信号。 然后，基于信号电平根据接收信号而改变的参考信号来检测第一稳定状态和第二稳定状态。 在第一稳定状态下，接收信号在第一信号电平下稳定。 在第二稳定状态下，接收信号在第二信号电平下稳定。 当检测到第一稳定状态并且将接收信号从第一信号电平改变为第二信号电平时，所生成的二进制信号保持在与第二信号电平相对应的信号电平，直到检测到第二稳定状态。
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公开(公告)号：US10432188B2
公开(公告)日：2019-10-01
申请号：US16099711
申请日：2017-08-04
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
Abstract: A ringing suppression circuit connected to a transmission line to suppress ringing caused by the transmission line transmitting a differential signal using a pair of signal lines, the differential signal varying between a high level and a low level, the pair of signal lines including a high potential signal line and a low potential signal line, the ringing suppression circuit including: an inter-line switching element that is connected between the pair of signal lines; a control portion that performs a ringing suppression operation in response to detecting a level change in the differential signal, wherein the ringing suppression operation turns on the inter-line switching element to decrease an impedance between the pair of signal lines; and a suppression operation prohibiting portion that prohibits the control portion from performing the ringing suppression operation in response to detecting a signal caused by a signal on the transmission line.
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公开(公告)号：US10128825B2
公开(公告)日：2018-11-13
申请号：US15753596
申请日：2016-08-25
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
IPC: H03K5/08 , H03K5/1252 , H04B3/42 , H03K17/687
Abstract: A ringing suppression circuit includes: a single line switching element, which is driven by a voltage, that is connected between a pair of signal lines; a controller that detects a change in a level of the differential signal and turns on the single line switching element to lower an impedance between the pair of signal lines; a period detector that detects a length of a suppressing period indicated by a setting signal, which is an input; and a suppressing period storage that stores the length of the suppressing period which is detected by the period detector. In addition, the pair of signal lines includes a high potential signal line and a low potential signal line. Moreover, the controller turns on the single line switching element for only the suppressing period having the length, which is stored in the suppressing period storage.
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Patent Agency Ranking
公开(公告)号：US20140056388A1
公开(公告)日：2014-02-27
申请号：US13973203
申请日：2013-08-22
Applicant: Denso Corporation
Inventor： Hiroyuki Mori , Naoki Kamikawa , Masayoshi Satake , Tomohisa Kishigami , Tomoyuki Koike
IPC: H04B1/10
Abstract: In a receiver circuit, a binary signal is generated based on a signal level of a received signal that has been received via a transmission line from a driver of a transmitter circuit. Then, a first stable state and a second stable state are detected based on a reference signal whose signal level changes in accordance with the received signal. In the first stable state, the received signal is stable at a first signal level. In the second stable state, the received signal is stable at a second signal level. When the first stable state is detected and the received signal is changed from the first signal level into the second signal level, the generated binary signal is retained at a signal level corresponding to the second signal level, until the second stable state is detected.
Abstract translation: 在接收机电路中，基于已经经由发射机电路的驱动器的传输线接收的接收信号的信号电平来生成二进制信号。 然后，基于信号电平根据接收信号而改变的参考信号来检测第一稳定状态和第二稳定状态。 在第一稳定状态下，接收信号在第一信号电平下稳定。 在第二稳定状态下，接收信号在第二信号电平下稳定。 当检测到第一稳定状态并且将接收信号从第一信号电平改变为第二信号电平时，所生成的二进制信号保持在与第二信号电平相对应的信号电平，直到检测到第二稳定状态。
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公开(公告)号：US10454528B2
公开(公告)日：2019-10-22
申请号：US15820495
申请日：2017-11-22
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Youhei Sekiya , Hiroyuki Mori , Yoshifumi Kaku , Hironobu Akita
IPC: H04B3/36 , H04B3/23 , H04B7/185 , B60R16/023
Abstract: A relay device for data between communication cables having a signal line in full duplex communication, includes: communication units connected to the communication cables; and a main controller executing a relay process of the data. Each communication unit includes: an input/output unit of an analog signal; an analog/digital converter converting the analog signal into a digital signal; a generator generating another digital signal based on another analog signal input to another communication unit; and an echo canceller calculating a filter coefficient based on the other digital signal and the digital signal, and executing a cancellation process of removing a component derived from the other digital signal from the digital signal according to the filter coefficient. The communication unit or the main control unit includes a sign determination unit determining based on a time change of the filter coefficient whether a sign of disconnection exists in the signal line.
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公开(公告)号：US20130241578A1
公开(公告)日：2013-09-19
申请号：US13792987
申请日：2013-03-11
Applicant: DENSO CORPORATION
Inventor： Masayoshi Satake , Hiroyuki Mori , Hajime Nakagawa
IPC: G01R27/26
CPC classification number: G01R27/2605 , B60N2/002 , B60R21/01532 , H03K17/955 , H03K2017/9615 , H03K2217/960765
Abstract: A capacitance type sensor includes a detection electrode, a reference electrode, and a sub-reference electrode for distinguishingly detecting a detection object. The sub-reference electrode has a reference voltage applied thereto and is displaceable relative to the detection electrode due to a pressure exerted from the detection object. A voltage application device applies a detection voltage to form an electric field in a space defined with the reference electrode device. A capacitance detector of the sensor detects a first capacitance and a second capacitance, and a detection unit of the sensor distinguishingly detects the detection object based on the first capacitance and the second capacitance. The first capacitance is measured between the detection electrode and the reference electrode, and the second capacitance is measured between the detection electrode and the sub-reference electrode.
Abstract translation: 电容式传感器包括检测电极，参考电极和用于区别检测检测对象的子参考电极。 子参考电极具有施加到其上的参考电压，并且由于从检测对象施加的压力而相对于检测电极可移动。 电压施加装置施加检测电压以在由参考电极装置限定的空间中形成电场。 传感器的电容检测器检测第一电容和第二电容，并且传感器的检测单元基于第一电容和第二电容区分检测检测对象。 在检测电极和参考电极之间测量第一电容，并且在检测电极和辅助参考电极之间测量第二电容。
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公开(公告)号：US10164620B1
公开(公告)日：2018-12-25
申请号：US15748749
申请日：2016-08-25
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Takuya Honda , Hirofumi Isomura , Tomohisa Kishigami , Hiroyuki Mori , Yasuhiro Mori , Yuki Horii
Abstract: A ringing suppression circuit, which is connected to a transmission line for transmitting a differential signal changeable between a high level and a low level in a binary level through a pair of a high potential side signal line and a low potential side signal line, and suppresses ringing that occurs in association with transmission of the differential signal, includes: an inter-line switching element that is connected to the pair of the high potential side signal line and the low potential side signal line; and a control unit that turns on the inter-line switching element and fixes an on state when detecting that the differential signal changes from the high level to the low level, and releases the on state after a predetermined time is measured and elapsed.
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公开(公告)号：US10038459B2
公开(公告)日：2018-07-31
申请号：US15098439
申请日：2016-04-14
Applicant: NIPPON SOKEN, INC. , DENSO CORPORATION
Inventor： Hiroyuki Mori , Youhei Sekiya , Yoshifumi Kaku , Shogo Akasaki
CPC classification number: H04B1/04 , G06F1/3203 , H04L12/10 , H04L27/12 , H04W52/0216 , H04W52/0219 , H04W52/0229 , Y02D70/00
Abstract: A network control device includes a communicator performing communications via a transmission line at a preset transmission speed in a wake-up mode, a low frequency attenuator attenuating a low frequency component in a transmission signal having a low transmission speed that is lower than the preset transmission speed at a position between the transmission line and the communicator to receive and transmit the transmission signal to and from the communicator, and a wake-up controller receiving and transmitting a wake-up signal for transitioning from a sleep mode to the wake-up mode, at a transmission line side position of the low frequency attenuator, where the wake-up signal at a low frequency band is subject to attenuation by the low frequency attenuator, for a selective wake-up of a network node via the transmission line for network communications.
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