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1. 发明专利

JP2014171131A Communication device using shared priority id 审中-公开
标题翻译：使用共享优先级的通信设备
公开(公告)号：JP2014171131A
公开(公告)日：2014-09-18
申请号：JP2013042495
申请日：2013-03-05
申请人： Hitachi Automotive Systems Ltd , 日立オートモティブシステムズ株式会社
发明人： SUZUKI TAKAFUMI , IJUIN MAKOTO
IPC分类号： H04L12/28
摘要： PROBLEM TO BE SOLVED: To suppress a communication delay due to a load on the bus of a car onboard network while maintaining a bus resource to be allocated to communication for each of a car onboard ECU and an external node.SOLUTION: An ID having high priority is prepared, as a priority ID, one instance for one automotive network, and this priority ID is used in common for communication data between a plurality of car onboard ECUs. The car onboard ECUs normally are performing normal communication in which a low priority ID is set for each communication data between the ECUs, and, when a switchover request is received from an external node in normal communication with external nodes, a communication state is entered in which communication data having the priority ID imparted thereto is used. Then, the communication data having the priority ID imparted thereto is used for communication between the car onboard ECUs and external nodes.
摘要翻译：要解决的问题：为了抑制车载网络的总线上的负载引起的通信延迟，同时保持为车载ECU和外部节点中的每一个分配通信的总线资源。解决方案：具有高的ID 作为优先级ID，优先级被准备为一个汽车网络的一个实例，并且该优先级ID被共同用于多个车载ECU之间的通信数据。汽车车载ECU通常正在执行正常通信，其中针对ECU之间的每个通信数据设置低优先级ID，并且当从与外部节点正常通信的外部节点接收到切换请求时，进入通信状态使用赋予其优先级ID的通信数据。然后，具有赋予其优先级ID的通信数据被用于车载ECU和外部节点之间的通信。

2. 发明专利

JP2011145841A Method for detecting memory overwrite by dma transfer 有权
标题翻译：通过DMA传输检测存储器过载的方法
公开(公告)号：JP2011145841A
公开(公告)日：2011-07-28
申请号：JP2010005419
申请日：2010-01-14
申请人： Hitachi Automotive Systems Ltd , 日立オートモティブシステムズ株式会社
发明人： IJUIN MAKOTO , IRIE TORU , OKUBO MINORU
IPC分类号： G06F13/28 , G06F12/14
摘要： PROBLEM TO BE SOLVED: To allow an abnormality in DMA to be detected and memory overwrite to be minimized, when a transfer destination address error occurs in a DMA transfer operation, and unauthorized DMA accesses are made to an unforeseen memory area. SOLUTION: A controller having a DMA (direct memory access) function includes a memory area A121 which is a transfer destination for a DMA device A13a; a memory area B121a in which an initial value of a timer A14a is stored; a timer A14a which causes time-out at a predetermined time; a timer B14b, which generates a start request signal for a DMA device B13b, at a predetermined time interval that is shorter than the time-out time of the timer A14a; and a DMA device B13b, which transfers the value of the memory area B121a to a counter of the timer A14a and initializes the timer. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：当在DMA传送操作中发生传送目的地地址错误时，为了允许检测到DMA异常并且存储器重写被最小化，并且对未预见的存储区域进行未经授权的DMA访问。解决方案：具有DMA（直接存储器访问）功能的控制器包括作为DMA设备A13a的传送目的地的存储区域A121; 存储定时器A14a的初始值的存储区域B121a; 定时器A14a，其在预定时间引起超时; 定时器B14b，其以比定时器A14a的超时时间短的预定时间间隔生成DMA设备B13b的开始请求信号; 以及将存储区域B121a的值传送到定时器A14a的计数器的DMA装置B13b，并初始化定时器。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2014026568A Built-in control unit 审中-公开
标题翻译：内置控制单元
公开(公告)号：JP2014026568A
公开(公告)日：2014-02-06
申请号：JP2012168097
申请日：2012-07-30
申请人： Hitachi Automotive Systems Ltd , 日立オートモティブシステムズ株式会社
发明人： OSAKI JUNICHI , KAWATSU MASAYOSHI , IJUIN MAKOTO
IPC分类号： G06F12/16
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of reading original data correctly without depending on spacial data restoration means even if the original data written in nonvolatile memory of a built-in control unit becomes defective data by aging deterioration of the nonvolatile memory.SOLUTION: A built-in control unit puts together and encodes plural pieces of data to write in an address on nonvolatile memory, as 1 bit, determines whether the data is written in the nonvolatile memory by each address on the nonvolatile memory, and combines and decodes a plurality of determined results.
摘要翻译：要解决的问题：提供一种能够正确读取原始数据而不依赖于空间数据恢复装置的技术，即使通过非易失性存储器的老化劣化，写入内置控制单元的非易失性存储器中的原始数据变为有缺陷的数据。：内置控制单元将多条数据写入并编码，写入非易失性存储器中的地址，如1位，通过非易失性存储器上的每个地址确定数据是否写入非易失性存储器，并将其合并和解码多个确定的结果。

4. 发明专利

JP2012141721A Integrated control device 审中-公开
标题翻译：集成控制装置
公开(公告)号：JP2012141721A
公开(公告)日：2012-07-26
申请号：JP2010293214
申请日：2010-12-28
申请人： Hitachi Automotive Systems Ltd , 日立オートモティブシステムズ株式会社
发明人： IRIE TORU , IJUIN MAKOTO , OKUBO MINORU , AKAGI YOSHIHIKO
IPC分类号： G06F12/16 , G06F13/28
摘要： PROBLEM TO BE SOLVED: To provide an integrated control device that can perform data consistency diagnosis of a storage unit by a simple configuration without stopping a DMA unit and while maintaining data consistency.SOLUTION: An address of a storage area 501 of which data are written into a storage unit 103 or read from the storage unit 103 by a data transfer unit 102 is stored in a register of the data transfer unit 102. Since an arithmetic unit 101 can know the address of the storage area 501 from the register, the arithmetic unit 101 avoids it to perform data consistency diagnosis.

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