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1. 发明授权

US10432188B2 Ringing suppression circuit and ringing suppression method 有权
公开(公告)号：US10432188B2
公开(公告)日：2019-10-01
申请号：US16099711
申请日：2017-08-04
申请人： DENSO CORPORATION , SOKEN, INC.
发明人： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
IPC分类号： H03K17/16 , H04L25/02
摘要： 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.

2. 发明授权

US10128825B2 Ringing suppression circuit 有权
公开(公告)号：US10128825B2
公开(公告)日：2018-11-13
申请号：US15753596
申请日：2016-08-25
申请人： DENSO CORPORATION , SOKEN, INC.
发明人： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
IPC分类号： H03K5/08 , H03K5/1252 , H04B3/42 , H03K17/687
摘要： 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.

3. 发明授权

US10164620B1 Ringing suppression circuit 有权
公开(公告)号：US10164620B1
公开(公告)日：2018-12-25
申请号：US15748749
申请日：2016-08-25
申请人： DENSO CORPORATION , SOKEN, INC.
发明人： Takuya Honda , Hirofumi Isomura , Tomohisa Kishigami , Hiroyuki Mori , Yasuhiro Mori , Yuki Horii
IPC分类号： H03K5/08 , H03K5/1252 , H03K3/037 , H04B3/20 , H03K5/24 , H03K5/00
摘要： 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.

4. 发明授权

US09270505B2 Communication system 有权
标题翻译：通讯系统
公开(公告)号：US09270505B2
公开(公告)日：2016-02-23
申请号：US14669093
申请日：2015-03-26
申请人： DENSO CORPORATION , NIPPON SOKEN, INC.
发明人： Hiroyuki Mori , Keiji Shigeoka , Hideki Kashima , Tomohisa Kishigami
IPC分类号： H02K7/08 , H04L25/49 , H04B3/54
CPC分类号： H04L25/4902 , H04B3/54
摘要： Each of nodes in a communication system includes a pull-up circuit connected between a power source and a transmission line and a switching portion connecting and disconnecting the transmission line and a ground line. One of the nodes is a master node, and the others of the nodes are slave nodes. The driver circuits are driven so that the master node constantly outputs the transmission code of logic 1 and the slave node outputting the transmission code of logic 0 extends the width of the low level of the transmission code of logic 1 on the transmission line. The master node further includes a current limiting section limiting an electric current that flows to the transmission line via the pull-up circuit based on at least a signal level of the transmission line.
摘要翻译：通信系统中的每个节点包括连接在电源和传输线之间的上拉电路以及连接和断开传输线和接地线的切换部分。其中一个节点是主节点，其他节点是从节点。驱动电路被驱动，使得主节点不断输出逻辑1的发送代码，并且输出逻辑0的发送代码的从节点在传输线上扩展逻辑1的发送代码的低电平的宽度。主节点还包括电流限制部分，其基于至少传输线的信号电平，限制经由上拉电路流到传输线的电流。

5. 发明授权

US10693451B2 Ringing suppressor circuit 有权
公开(公告)号：US10693451B2
公开(公告)日：2020-06-23
申请号：US16273810
申请日：2019-02-12
申请人： SOKEN, INC. , DENSO CORPORATION
发明人： Youhei Sekiya , Hiroyuki Mori , Tomohisa Kishigami
IPC分类号： H03K17/16 , H04L25/02 , H04B3/42 , H03H11/24 , H04L12/40
摘要： 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.

6. 发明授权

US10224925B2 Communication node 有权
公开(公告)号：US10224925B2
公开(公告)日：2019-03-05
申请号：US15741075
申请日：2016-06-08
申请人： DENSO CORPORATION , SOKEN, INC.
发明人： Hiroyuki Mori , Takuya Honda , Tomohisa Kishigami , Hirofumi Isomura
IPC分类号： H03K17/16 , H04L25/02 , H04L25/12
摘要： 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.

7. 发明授权

US08860473B2 Ringing suppression circuit 有权
标题翻译：振铃抑制电路
公开(公告)号：US08860473B2
公开(公告)日：2014-10-14
申请号：US13712260
申请日：2012-12-12
申请人： DENSO Corporation , Nippon Soken, Inc.
发明人： Youichirou Suzuki , Noboru Maeda , Hiroyuki Obata , Masakiyo Horie , Tomohisa Kishigami
IPC分类号： H03B1/00 , H04L25/02 , H03K17/16 , H03K19/003
CPC分类号： H03K17/16 , H03K19/00361 , H04L25/028
摘要： A ringing suppression circuit for a communication circuit that performs communication through a transmission line includes a high side switch connected between a high potential reference point and a high side line of the transmission line, a low side switch connected between a low potential reference point and a low side line of the transmission line, and a ringing suppression section. The ringing suppression section turns on the high side switch based on a difference between a potential of the high side line and a potential applied to a control terminal of the high side switch. The ringing suppression section turns on the low side switch based on a difference between a potential of the low side line and a potential applied to a control terminal of the low side switch.
摘要翻译：用于通过传输线进行通信的通信电路的振铃抑制电路包括连接在传输线的高电位参考点和高侧线之间的高侧开关，连接在低电位参考点和传输线的低边线，以及振铃抑制部。振铃抑制部分基于高侧线路的电位和施加到高侧开关的控制端子的电位之间的差异来接通高侧开关。振铃抑制部分基于低侧线路的电位和施加到低侧开关的控制端子的电位之间的差来打开低侧开关。

8. 发明授权

US10601453B2 Electronic control unit 有权
公开(公告)号：US10601453B2
公开(公告)日：2020-03-24
申请号：US16392814
申请日：2019-04-24
申请人： SOKEN, INC. , DENSO CORPORATION
发明人： Youhei Sekiya , Hiroyuki Mori , Tomohisa Kishigami
IPC分类号： H03D1/04 , H04B1/10 , H04B1/16 , H03K17/687 , H03K5/1252
摘要： An electronic control unit coupled to a transmission line of a differential signal includes: a first suppression circuit suppressing a ringing effect and decreasing an impedance of the line for a first time interval when a level of the differential signal changes; a second suppression circuits suppressing a ringing effect and decreasing the impedance of the line for a second time interval when the level of the differential signal changes; and a switching unit isolating the second suppression circuit from the line when the operation power source energizes the electronic control unit, and connecting the second suppression circuit to the line when the operation power source does not energize the electronic control unit.

9. 发明申请

US20130099849A1 RINGING SUPPRESSION CIRCUIT 有权
标题翻译：环形抑制电路
公开(公告)号：US20130099849A1
公开(公告)日：2013-04-25
申请号：US13712260
申请日：2012-12-12
申请人： DENSO CORPORATION , NIPPON SOKEN, INC.
发明人： Youichirou Suzuki , Noboru Maeda , Hiroyuki Obata , Masakiyo Horie , Tomohisa Kishigami
IPC分类号： H03K17/16
CPC分类号： H03K17/16 , H03K19/00361 , H04L25/028
摘要： A ringing suppression circuit for a communication circuit that performs communication through a transmission line includes a high side switch connected between a high potential reference point and a high side line of the transmission line, a low side switch connected between a low potential reference point and a low side line of the transmission line, and a ringing suppression section. The ringing suppression section turns on the high side switch based on a difference between a potential of the high side line and a potential applied to a control terminal of the high side switch. The ringing suppression section turns on the low side switch based on a difference between a potential of the low side line and a potential applied to a control terminal of the low side switch.
摘要翻译：用于通过传输线进行通信的通信电路的振铃抑制电路包括连接在传输线的高电位参考点和高侧线之间的高侧开关，连接在低电位参考点和传输线的低边线，以及振铃抑制部。振铃抑制部分基于高侧线路的电位和施加到高侧开关的控制端子的电位之间的差异来接通高侧开关。振铃抑制部分基于低侧线路的电位和施加到低侧开关的控制端子的电位之间的差来打开低侧开关。

10. 发明授权

US10027364B2 Differential communication circuit 有权
公开(公告)号：US10027364B2
公开(公告)日：2018-07-17
申请号：US15663888
申请日：2017-07-31
申请人： DENSO CORPORATION
发明人： Naoya Tsuchiya , Tomohisa Kishigami
IPC分类号： H04B1/40
摘要： A differential communication circuit includes: a first switch in between a signal line and a power source, a second switch in between a signal line and a ground, a third switch in between the signal line and the ground, a fourth switch in between the signal line and the power source, first and second drivers respectively driving the first and second switches, and third and fourth drivers respectively driving the third and fourth switches OFF to ON at an ON to OFF timing of the first and second switches, for setting an ON period of the third and fourth switches to be shorter than a one-bit width in a communication signal and enabling a stable signal level determination while reducing power consumption of the differential communication circuit.

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