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11. 发明授权

US10355876B2 Communications device for transmitting a differential signal 有权
公开(公告)号：US10355876B2
公开(公告)日：2019-07-16
申请号：US15498861
申请日：2017-04-27
申请人： DENSO CORPORATION
发明人： Tomohisa Kishigami , Shuichi Nakamura
IPC分类号： H04B1/40 , H04L1/24 , H04L12/26 , H04L12/40
摘要： In a communication device, when an enabling signal is at a high level and a transmit data is at a high level, that is, in a recessive period, both transistors turn off. Thus, potentials of signal lines are determined by power supply from a second transmitting part to a communications network. When an error frame arises in this state, that is, transistors in the other ECU turn on, excessive currents flow the signal lines. When current monitoring circuits detect error currents, an error signal is changed to a high level.

12. 发明授权

US10313152B2 Transmission circuit 有权
公开(公告)号：US10313152B2
公开(公告)日：2019-06-04
申请号：US15662535
申请日：2017-07-28
申请人： DENSO CORPORATION
发明人： Tomohisa Kishigami , Shuichi Nakamura
IPC分类号： H04L12/46 , H03F3/24 , H04B3/54 , H04J3/22 , H04L25/02 , H04L12/40
摘要： A transmission circuit includes a first transmitter and a second transmitter. The first transmitter turns OFF first transistors when a transmission data is in a high level, and turns ON the first transistors when the transmission data is in a low level. When a permission signal is in the high level, the second transmitter turns ON the second transistors when the transmission data is in the high level, and turns OFF the second transistors when the transmission data is in the low level. Diodes are set to suppress an amplitude of a differential signal in an ON time of the second transistors more than an amplitude of a differential signal in an ON time of the first transistors, to suppress ringing and radiation noise.

13. 发明授权

US09819371B2 Electronic device 有权
公开(公告)号：US09819371B2
公开(公告)日：2017-11-14
申请号：US15160133
申请日：2016-05-20
申请人： DENSO CORPORATION
发明人： Tomohisa Kishigami
IPC分类号： H04B1/66 , H03D1/04 , H04L25/08 , H04B1/04 , H03H11/24 , H03K5/24 , H04B1/40
CPC分类号： H04B1/0475 , H03H11/245 , H03K5/24 , H04B1/40
摘要： An electronic device includes a transceiver connected to a differential signal transmission line for transmitting a differential signal through a pair of signal lines to communicate with one or a plurality of other devices connected to the differential signal transmission line. The electronic device includes: a suppression circuit that is operated by a power source voltage to suppress waveform distortion in the differential signal transmitted through the differential signal transmission line; and a power source controller that controls supply or cutoff of the power source voltage to the suppression circuit in response to a change in a differential voltage between the pair of signal lines.

14. 发明授权

US09130551B2 Decoder for decoding PWM code and communications system 有权
标题翻译：用于解码PWM代码和通信系统的解码器
公开(公告)号：US09130551B2
公开(公告)日：2015-09-08
申请号：US13954069
申请日：2013-07-30
申请人： DENSO CORPORATION
发明人： Hideki Kashima , Tomohisa Kishigami , Naoji Kaneko
IPC分类号： H03K9/08 , H03K7/08
CPC分类号： H03K7/08
摘要： A decoder for decoding an input signal coded with a pulse width modulation code as a line code to an output signal in a binary code, has a first memory, a first timer, a determination circuit and a first controller. The information on a duty duration of the PWM code, corresponding to at least one kind of the output signals, is stored on the first memory. The first timer has a capacity to measure the duty duration of the input signal. The determination circuit has a capacity to determining which kind of the output signals corresponds to the input signal, on the basis of the information stored on the first memory and the duty duration measured with the first timer. The first controller has a capacity to updating the information stored on the first memory, on the basis of the determination result and the measured duty duration.
摘要翻译：将以脉冲宽度调制码编码的输入信号解码为二进制码中的输出信号的行码的解码器具有第一存储器，第一定时器，确定电路和第一控制器。对应于至少一种输出信号的PWM代码的占空比持续时间的信息被存储在第一存储器上。第一定时器具有测量输入信号占空比的能力。确定电路具有根据存储在第一存储器上的信息和用第一定时器测量的占空比来确定哪种输出信号对应于输入信号的能力。第一控制器具有根据确定结果和测量的占空比持续时间来更新存储在第一存储器上的信息的能力。

15. 发明授权

US09094279B2 Communication apparatus for transmission of binary coded signal 有权
标题翻译：用于传输二进制编码信号的通信装置
公开(公告)号：US09094279B2
公开(公告)日：2015-07-28
申请号：US14083814
申请日：2013-11-19
申请人： DENSO CORPORATION , ANDEN CO., LTD.
发明人： Hideki Kashima , Tomohisa Kishigami , Naoji Kaneko , Nobutomo Takagi
IPC分类号： H03K7/08 , H04L25/49 , H04L7/04 , H04L7/06
CPC分类号： H04L25/4902 , H04L7/041 , H04L7/065
摘要： A communication apparatus includes a detecting unit, a process performing unit, and a range setting unit. The detecting unit detects a boundary pattern periodically appearing between codes in a binary coded signal transmitted through a transmission line. The boundary pattern is information showing a boundary appearing between codes. The process performing unit performs a process in synchronization with timing of appearance of the boundary pattern. The range setting unit sets an allowance range which is set include timing at which it is estimated that the next boundary pattern appears. The timing is counted from the timing currently detected by the detecting unit. The detecting unit includes a section which detects the timing of appearance of the boundary pattern during the allowance range.
摘要翻译：通信装置包括检测单元，处理执行单元和范围设置单元。检测单元检测通过传输线传输的二进制编码信号中的码之间周期性出现的边界模式。边界模式是显示代码之间出现边界的信息。处理执行单元与边界图案的出现定时同步地执行处理。范围设定单元设定允许范围，包括估计下一个边界图案出现的定时。定时从检测单元当前检测到的定时开始计数。检测单元包括在容许范围内检测边界图案的出现定时的部分。

16. 发明授权

US09032233B2 On-board network system 有权
标题翻译：车载网络系统
公开(公告)号：US09032233B2
公开(公告)日：2015-05-12
申请号：US13960034
申请日：2013-08-06
申请人： Denso Corporation
发明人： Takahiro Sasaki , Tomohisa Kishigami , Tomoko Kodama
IPC分类号： G06F1/32 , H04L12/40
CPC分类号： G06F1/3234 , B60R25/24 , H04L12/40 , H04L12/40039 , H04L41/06 , H04L67/02 , H04L2012/40273
摘要： An on-board network system is presented. The on-board network system sends a sleep-entered message to a communication bus. The sleep-entered message is sent under a condition that a sleep condition is satisfied on a basis that a network management (NM) message is ceased during state transition process in which node's state transfers from a normal state to a power-saving state. A monitoring ECU corresponding to a master performs an abnormality detection process. In the abnormality detection process, the monitoring ECU detects an abnormality state of the state transition process based on whether or not the sleep-entered message is sent from any one of nodes, thereby it is possible to detect the abnormality state not only during each node is a normal state but also during a bus-sleep state.
摘要翻译：提供了一个车载网络系统。车载网络系统向通信总线发送睡眠输入消息。睡眠输入消息是在状态转换过程中基于在节点的状态从正常状态转换到省电状态的状态转移过程中停止网络管理（NM）消息的基础来满足睡眠条件的条件下发送的。与主机对应的监视ECU执行异常检测处理。在异常检测处理中，监视ECU基于是否从任一个节点发送了睡眠输入消息来检测状态转换处理的异常状态，从而可以不仅在每个节点期间检测异常状态是一个正常状态，但也是在一个公共汽车睡眠状态。

17. 发明授权

US08929431B2 Transceiver for serial data communication utilizing PWM encoded signal 有权
标题翻译：收发器，用于利用PWM编码信号的串行数据通信
公开(公告)号：US08929431B2
公开(公告)日：2015-01-06
申请号：US13954089
申请日：2013-07-30
申请人： Denso Corporation
发明人： Hideki Kashima , Tomohisa Kishigami , Naoji Kaneko
IPC分类号： H03K7/08 , H04L25/49
CPC分类号： H04L25/4902
摘要： Serial data are transmitted between transceivers via a communication path, each bit expressed by a dominant code or a recessive code which vary between dominant and recessive levels, the dominant code having a greater proportion of duration at the dominant level. A device (clock master) can continuously output successive recessive codes to the communication path, in which condition a transceiver can transmit a dominant code by producing an output drive signal which overwrites a part of a recessive code, currently being received from the communication path, to the dominant level. The output drive signal is shaped with a steeper edge slope at a transition from an inactive to an active level than from the active to the inactive level, enabling an increased data transmission rate without increased noise.
摘要翻译：串行数据经由通信路径在收发器之间传输，每个位由主导代码或隐性代码表示，隐性代码在主导和隐性级别之间变化，主导代码在主导级别具有较大比例的持续时间。一个设备（时钟主机）可以将连续的隐性代码连续地输出到通信路径，在这种情况下，收发器可以通过产生覆盖当前从通信路径接收的隐性代码的一部分的输出驱动信号来发送主导代码，达到主导地位。输出驱动信号在从非活动电平到从有源电平转换到无效电平的转换时具有更陡峭的边沿斜率，从而能够提高数据传输速率而不增加噪声。

18. 发明申请

US20140047146A1 COMMUNICATION LOAD DETERMINING APPARATUS 审中-公开
标题翻译：通信负载确定装置
公开(公告)号：US20140047146A1
公开(公告)日：2014-02-13
申请号：US13949490
申请日：2013-07-24
申请人： DENSO CORPORATION
发明人： Tetsuo Nakagawa , Tomohisa Kishigami
IPC分类号： G06F13/42
CPC分类号： G06F13/42 , G06F11/3419 , G06F11/3495 , H04L12/6418
摘要： A communication load determining apparatus is used for a communication system which includes a plurality of communication devices performing communication via a common bus. The communication system operates in accordance with a communication protocol that defines which a priority order is set to each of the frames transmitted from the communication devices and which a frame having a lower priority has a longer transmission latency before being transmitted to the bus. In the communication load determining apparatus, a low-priority frame having a lower priority than other frames to the bus is transmitted, and a transmission latency of the low-priority frame is measured. The communication load determining apparatus determines whether or not abnormality has occurred in a communication load in the bus on the basis of the measured transmission latency to produce a determination result. The produced determination result is stored.
摘要翻译：通信负载确定装置用于包括通过公共总线执行通信的多个通信装置的通信系统。通信系统根据通信协议进行操作，该通信协议定义哪个优先顺序被设置为从通信设备发送的每个帧，以及具有较低优先级的帧在发送到总线之前具有更长的传输等待时间。在通信负载确定装置中，发送具有比其他帧低于总线的优先级低的低优先级帧，并且测量低优先级帧的传输等待时间。通信负载确定装置基于所测量的传输等待时间来确定总线中的通信负载中是否发生异常以产生确定结果。产生的确定结果被存储。

19. 发明申请

US20140036988A1 TRANSCEIVER FOR SERIAL DATA COMMUNICATION UTILIZING PWM ENCODED SIGNAL 有权
标题翻译：用于串行数据通信的收发器使用PWM编码信号
公开(公告)号：US20140036988A1
公开(公告)日：2014-02-06
申请号：US13954089
申请日：2013-07-30
申请人： DENSO CORPORATION
发明人： Hideki Kashima , Tomohisa Kishigami , Naoji Kaneko
IPC分类号： H04L25/49
CPC分类号： H04L25/4902
摘要： Serial data are transmitted between transceivers via a communication path, each bit expressed by a dominant code or a recessive code which vary between dominant and recessive levels, the dominant code having a greater proportion of duration at the dominant level. A device (clock master) can continuously output successive recessive codes to the communication path, in which condition a transceiver can transmit a dominant code by producing an output drive signal which overwrites a part of a recessive code, currently being received from the communication path, to the dominant level. The output drive signal is shaped with a steeper edge slope at a transition from an inactive to an active level than from the active to the inactive level, enabling an increased data transmission rate without increased noise.
摘要翻译：串行数据经由通信路径在收发器之间传输，每个位由主导代码或隐性代码表示，隐性代码在主导和隐性级别之间变化，主导代码在主导级别具有较大比例的持续时间。一个设备（时钟主机）可以将连续的隐性代码连续地输出到通信路径，在这种情况下，收发器可以通过产生覆盖当前从通信路径接收的隐性代码的一部分的输出驱动信号来发送主导代码，达到主导地位。输出驱动信号在从非活动电平到从有源电平转换到无效电平的转换时具有更陡峭的边沿斜率，从而能够提高数据传输速率而不增加噪声。

20. 发明申请

US20130326255A1 COMMUNICATION SYSTEM 有权
标题翻译：通讯系统
公开(公告)号：US20130326255A1
公开(公告)日：2013-12-05
申请号：US13909322
申请日：2013-06-04
申请人： DENSO CORPORATION
发明人： Tomoko Kodama , Tomohisa Kishigami
IPC分类号： G06F1/32
CPC分类号： G06F1/32 , H04L12/40039 , H04L2012/40215
摘要： A communication system includes a plurality of nodes performing communication via a common communication channel based on a communication protocol and including a first node or a second node. The first node transmits, to the communication channel, a wake-up frame as the communication frame for enabling the second node to transition from a sleep state to a normal state, determines whether or not the second node transitions to the normal state due to the wake-up frame, and generates an abnormal waveform pattern in the communication channel when determined that the second node does not transition to the normal state. The second node stores the identification information allocated to the second node, and enables the second node to transition from the sleep state to the normal state under on condition that the identification information included in the wake-up frame received from the communication channel is identical to the stored identification information.
摘要翻译：通信系统包括多个节点，其经由基于通信协议的公共通信信道执行通信，并且包括第一节点或第二节点。第一节点向通信信道发送作为用于使第二节点从睡眠状态转换到正常状态的通信帧的唤醒帧，由于所述第二节点由于所述第二节点而转移到正常状态唤醒帧，并且当确定第二节点未转换到正常状态时，在通信信道中产生异常波形模式。第二节点存储分配给第二节点的识别信息，并且使得第二节点在从通信信道接收到的唤醒帧中包括的识别信息与从通信信道接收到的识别信息相同的情况下，能够从休眠状态转换到正常状态存储的标识信息。

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