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1. 发明专利

JP2007018414A Control device having correcting function of memory bit error 审中-公开
标题翻译：具有修正存储位错误功能的控制装置
公开(公告)号：JP2007018414A
公开(公告)日：2007-01-25
申请号：JP2005201350
申请日：2005-07-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： IKEDA HISAHIRO , MAKI YUJI
IPC分类号： G06F12/16
摘要： PROBLEM TO BE SOLVED: To solve the problem that a control device may be enlarged when a redundant bit or additional hardware is packaged, such as an ECC.
SOLUTION: When a transient bit error of a memory (RAM) is generated in the control device, ROM data and RAM data are mutually compared in the case of fixed area data. When the compared result is inconsistent, the RAM data are corrected with the ROM data as a real value. In the case of variable area data, the data are tripled, respective data are compared with each other in reading the data, and when one data is inconsistent, two remaining data are regarded as real values and the inconsistent data is corrected. When the number of times of correction reaches the prescribed number of times, prescribed abnormality processing is performed.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了解决诸如ECC之类的冗余位或附加硬件被封装时可以扩大控制装置的问题。解决方案：在控制装置中产生存储器（RAM）的瞬态位错误时，在固定区域数据的情况下，将ROM数据和RAM数据进行相互比较。当比较结果不一致时，RAM数据用ROM数据作为实数值进行校正。在可变区域数据的情况下，将数据增加三倍，在读取数据时将相应的数据进行比较，当一个数据不一致时，将剩下的两个数据视为实数值，并且校正不一致的数据。当校正次数达到规定次数时，执行规定的异常处理。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007182120A Fault contact detection device between transmission and reception 有权
标题翻译：传输和接收之间的故障接触检测装置
公开(公告)号：JP2007182120A
公开(公告)日：2007-07-19
申请号：JP2006000719
申请日：2006-01-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MAKI YUJI , IKEDA HISAHIRO , TAKEHARA TAKESHI , ONUMA HARUHIKO , WATABE TEI
IPC分类号： B61L1/20 , G01R31/02 , H04B3/46
摘要： PROBLEM TO BE SOLVED: To improve fault contact detectability by using a secondary signal occurring in transmitting and receiving and frequency damping characteristics of a transmission channel without using a direct current power supply circuit or the like for fault contact detection. SOLUTION: The fault contact detection device is equipped with a receiver having a receiving processing means capable of measuring a level of signal wave which secondarily occurs in creating the main signal in a transmission side and is in a frequency damping band area. The fault contact detection device can easily determine that the transmission side signal arrives at the reception side without going through the transmission channel and detect the fault contact between the transmission and reception with safety and high reliability. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过在不使用用于故障接触检测的直流电源电路等的情况下，通过使用在发送和接收中发生的二次信号和频率阻尼特性来改善故障接触可检测性。解决方案：故障接触检测装置配备有具有接收处理装置的接收机，该接收处理装置能够测量在发送侧产生主信号并且处于频率阻尼带区域中次要发生的信号波的电平。故障接触检测装置可以容易地确定发送侧信号到达接收侧而不经过传输信道，并以安全和高可靠性检测发送和接收之间的故障接触。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2008259103A Means for detecting abnormality of carrier wave frequency 有权
标题翻译：检测载波波频率异常的方法
公开(公告)号：JP2008259103A
公开(公告)日：2008-10-23
申请号：JP2007101625
申请日：2007-04-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MAKI YUJI , IKEDA HISAHIRO , TAKEHARA TAKESHI , SAKAKAD GOUSHIRO , KIKUCHI KENJI
IPC分类号： H04L27/10
摘要： PROBLEM TO BE SOLVED: To detect abnormality of a carrier wave frequency oscillator by measuring a carrier frequency component contained in a modulation wave while paying attention to the fact that a frequency component of a carrier wave is present in the modulation wave in a system which performs modulation using the carrier wave.
SOLUTION: A means for detecting abnormality of a carrier frequency is characterized in that, while using the characteristic that a modulation wave outputted from a modulation means is varied within one term unit of a carrier wave frequency, abnormality of the carrier wave frequency is detected by detecting that the number of times of varying the carrier wave per unit time exceeds a predetermined threshold.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过测量调制波中包含的载波频率分量来检测载波频率振荡器的异常，同时注意在调制波中存在载波的频率分量的事实使用载波进行调制的系统。解决方案：用于检测载波频率异常的装置的特征在于，在使用从调制装置输出的调制波在载波频率的一个单位内变化的特性的同时，载波频率的异常通过检测每单位时间改变载波的次数超过预定阈值来检测。版权所有（C）2009，JPO＆INPIT

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