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1. 发明专利

JPH118596A NO-HIT SYSTEM SWITCHING METHOD 失效
公开(公告)号：JPH118596A
公开(公告)日：1999-01-12
申请号：JP15838797
申请日：1997-06-16
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TSUKIOKA YOICHI , YOSHIDA KINJI , KAWAMURA NORIYUKI , SUGAWARA HIROSHI
IPC分类号： H04L1/22 , H04B1/74 , H04J3/00 , H04L7/00
摘要： PROBLEM TO BE SOLVED: To always absorb inter-system ordinary phase difference within a fixed range with a small memory capacity, in spite of whether or not there is fault transfer and further to perform system switching in the no-hit state of multiframe(MF) signal. SOLUTION: When the phase delay of active system is once temporarily recognized from the active/reserve system ordinary phase difference by respective phase comparator circuits 1-2 and 2-2, for example, afterwards, data are read out of respective memories 1-3 and 2-3 at the same timing, while suppressing the amount of data to be stored into the memory 1-3 which correspond to the active system to a minimum. In this state, even when the phase of a reserve system is changed by fault transfer or the like, data can be read out of the reserve system in the state of no hit as well, when the inter-system ordinary phase difference enables system switching to the reserve system.

2. 发明专利

JP2002058060A SIGNAL CONTROL METHOD 失效
公开(公告)号：JP2002058060A
公开(公告)日：2002-02-22
申请号：JP2000238466
申请日：2000-08-07
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAMOTO KOHEI , FUKUSHIMA YUTAKA , NISHI YUMIKO , TSUKIOKA YOICHI , NANBA YUKIHIRO
IPC分类号： H04M3/42 , H04M3/00 , H04M11/00 , H04W24/04 , H04W84/14 , H04Q7/36
摘要： PROBLEM TO BE SOLVED: To realize a various information transmitting service such as a calling telephone number receiving function service while securing the subscriber's circuit control signal transmission and reception timing of the service and protecting the subscriber's circuit control signal from any data transmission error by shortening a delay time in a radio section. SOLUTION: At the time of performing cabling between inter-protocol converter 2a and WAC 3a and calling inside FWA system 7a, a voice signal transmitting line 23a and a subscriber's circuit control signal transmission and receiving line 24a are secured for transmitting and receiving a outgoing subscriber's circuit control signal in a proper format such as a bit map format. Moreover, a control signal monitor control unit 13a is provided with a buffer 14a for temporarily storing an outgoing subscriber's circuit control signal 18a in a proper format such as a bit map format to be received from the subscriber's circuit control signal transmitting and receiving line 24a, an incoming monitoring part 15 for detecting the secondary response signal of an incoming subscriber's circuit control signal 21b, an L1 and L2 polarity depolarization preparing part 16a for preparing L1 and L2 polarity depolarization to be outputted to a subscriber's circuit 6a at the time of detecting the secondary response signal, and an MF switching part 17a for switching the outgoing subscriber's circuit control signal 21a to be transmitted to the subscriber's circuit 6a.

3. 发明专利

JPH1070491A TRANSMISSION CABLE CONNECTION TEST EQUIPMENT 失效
公开(公告)号：JPH1070491A
公开(公告)日：1998-03-10
申请号：JP22793496
申请日：1996-08-29
申请人： NIPPON TELEGRAPH & TELEPHONE , NEC CORP , HITACHI LTD , FUJITSU LTD , OKI ELECTRIC IND CO LTD
发明人： KAWAMURA NORIYUKI , SUGAWARA HIROSHI , AWAJI TOSHIO , TSUKIOKA YOICHI , NARAHARA NOBORU , SATO YOJI
IPC分类号： H04B10/25 , H04B3/46 , H04B10/073 , H04B10/077 , H04B10/12 , H04B10/13 , H04B10/135 , H04B10/14
摘要： PROBLEM TO BE SOLVED: To provide the transmission cable connection test equipment by which normal connection and abnormal connection of 0/1 systems transmission/reception cables are confirmed at once only at one line of transmission lines. SOLUTION: Each interface section 10 is provided with a system information generating circuit 11, a system information collation circuit 12, a display circuit 13 displaying a collation result of system information, and a multiplexer demultiplexer circuit 14. The system information generating circuit 11 sends system information designated by its own equipment to an opposite destination via the multiplexer demultiplexer circuit, and the system information collation circuit 12 collates the system information received from an opposite party equipment with the system information designated by its own equipment to discriminate matching/mismatching of system information and interruption of input and the result of system information collation is displayed on the display circuit 13 and the system information is sent to the opposite party equipment via the multiplexer demultiplexer circuit 14, the display circuit 13 displays whether or not transmission/reception optical fiber cables are correctly connected to the opposite party equipment based on the collation result of the system information collation circuit 12 of its own equipment and the system information collation result of the opposite party equipment received via the multiplexer demultiplexer circuit 14.

4. 发明专利

JP2009100015A Video data distribution system, video distribution server, and video receiving client 审中-公开
标题翻译：视频数据分发系统，视频分发服务器和视频接收客户端
公开(公告)号：JP2009100015A
公开(公告)日：2009-05-07
申请号：JP2007266600
申请日：2007-10-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIYAMOTO TAKASHI , SHIMIZU SATOSHI , TSUKIOKA YOICHI
IPC分类号： H04L12/70 , H04L12/709 , H04N7/173 , H04N21/226 , H04N21/2385 , H04N21/61
摘要： PROBLEM TO BE SOLVED: To provide a video data distribution system, a video distribution server, or image receiving client in which momentary disconnection does not occur even when a channel fault occurs. SOLUTION: A streaming distribution server 10 has a function to divide streaming video data in two in a state that the number of frames is in half. In order to transmit the streaming video data divided into two separately, two network channels are prepared. Moreover, a stream video data receiving client 40 has a function for receiving the stream video data divided into two and synthesizing them into one original streaming video data. Thus, even when a failure occurs to one of the two channels where the streaming video data pass, 50% of the quality can be secured, so that smooth streaming video distribution where momentary disconnection does not happen can be continued. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种视频数据分发系统，视频分发服务器或图像接收客户端，其中即使当信道故障发生时也不会发生瞬时断开。解决方案：流分配服务器10具有在帧数为一半的状态下将流视频数据分成两部分的功能。为了将流视频数据分成两部分分开，准备两个网络通道。此外，流视频数据接收客户端40具有接收分为两部分的流视频数据并将它们合成为一个原始流视频数据的功能。因此，即使当流式视频数据通过的两个频道中的一个发生故障时，也可以保证50％的质量，从而可以继续进行不会发生瞬间断开的平滑流视频分配。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2002185989A METHOD AND DEVICE FOR ACCOMMODATING SUBSCRIBER CIRCUIT 失效
公开(公告)号：JP2002185989A
公开(公告)日：2002-06-28
申请号：JP2000374389
申请日：2000-12-08
申请人： HITACHI LTD
发明人： TSUKIOKA YOICHI , FUKUSHIMA YUTAKA , NISHI YUMIKO , NAGUMO KATSUMI , KASHIWAGI HIRONOBU
IPC分类号： H04J3/00 , H04L12/02 , H04L25/49 , H04Q3/42 , H04Q11/04
摘要： PROBLEM TO BE SOLVED: To efficiently accommodate a plurality of subscriber circuits different in transmission rate in a common data bus transmitting system where a higher rank circuit accommodating the subscriber circuits and the subscriber circuit perform one to M transmission. SOLUTION: When the higher rank circuit 10 accommodating the subscriber circuits 11 and the subscriber circuits 11a to 11m realize one to M (M is an integer of >=1) signal transmission through a common data bus 12 using time division, the time area that is previously allocated is band-expanded only in the pertinent time area by increasing a clock frequency, thus the subscriber circuit having the plural types of transmission speeds can be accommodated.

6. 发明专利

JP2009170985A On-demand data distribution system 审中-公开
标题翻译：需求数据分配系统
公开(公告)号：JP2009170985A
公开(公告)日：2009-07-30
申请号：JP2008003825
申请日：2008-01-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUKIOKA YOICHI
IPC分类号： H04N7/173 , H04L12/70 , H04L12/761 , H04N21/238 , H04N21/24 , H04N21/438 , H04N21/442 , H04N21/472 , H04N21/6338
摘要： PROBLEM TO BE SOLVED: To enhance communication efficiency furthermore in a hybrid data distribution system combining multicast distribution and unicast distribution. SOLUTION: When content distribution is requested from a user, data from the head to a reception start moment which is missing in multicast distribution data is received individually by unicast. Unicast distribution is omitted by informing the time when content distribution is started in the next time multicast for a content distribution request from a user. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：在组合多播分发和单播分发的混合数据分发系统中，进一步提高通信效率。解决方案：当从用户请求内容分发时，通过单播单独接收从头到数据分发数据中丢失的接收开始时刻的数据。通过在用户的内容分发请求的下一次多播中通知内容分发开始的时间，省略了单播分发。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2003018319A Audio and data communication system 审中-公开
标题翻译：音频和数据通信系统
公开(公告)号：JP2003018319A
公开(公告)日：2003-01-17
申请号：JP2001204307
申请日：2001-07-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KITA KENJI , TSUKIOKA YOICHI , TANIGUCHI KOICHI , MAKINO MASATOSHI
IPC分类号： H04M3/00 , H04M11/00
摘要： PROBLEM TO BE SOLVED: To provide audio and data communication services, with which the problem inconventional xDSL services is solved and further existing equipment such as telephone cable can be used as it is.
SOLUTION: In this audio and data communication system, inside the house of a subscriber 1, an indoor splitter 12 is provided for separating and integrating signals in frequencies thereof in order to transmit an audio band signal to a telephone set 11 and to transmit a high speed data signal to a DSL modem 13, a subscriber cable bundle 22 from a telephone station 5 is accommodated, and a function is provided for branching a subscriber cable 21 to be connected to several subscribers from that subscriber cable bundle 22. In a connecting terminal box 3 installed from the telephone station 5 to the house of the subscriber 1, the subscriber cable bundle 22 from the telephone station 5 is disconnected at a connecting point 31 connected to the subscriber cable 21 to the relevant subscriber 1 and at this disconnecting point, a DSLAM device 4 equipped with a splitter 41 is connected.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供音频和数据通信服务，解决问题不寻常的xDSL服务，并且可以使用诸如电话电缆的其他现有设备。解决方案：在这种音频和数据通信系统中，在用户1的房屋内，提供室内分路器12，用于在其频率上分离和积分信号，以将音频信号发送到电话机11并传输高高速数据信号到DSL调制解调器13，来自电话台5的用户电缆束22被容纳，并且提供了用于将用户电缆21分支以从该用户电缆束22连接到多个用户的功能。在连接终端方框3从电话站5安装到用户1的房屋，来自电话站5的用户电缆束22在连接到用户电缆21的连接点31断开到相关用户1，并且在该断开点处，配备有分路器41的DSLAM设备4被连接。

8. 发明专利

JP2007267064A Network security management system, remote monitoring method in encryption communication, and communication terminal 有权
标题翻译：网络安全管理系统，加密通信中的远程监控方法和通信终端
公开(公告)号：JP2007267064A
公开(公告)日：2007-10-11
申请号：JP2006089773
申请日：2006-03-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUKIOKA YOICHI
IPC分类号： H04L9/08 , G06F21/20 , H04L12/22
摘要： PROBLEM TO BE SOLVED: To provide a network security management system capable of improving network security management and reducing loads required for communication processing and decoding processing concentrating on a security monitoring device following the improvement. SOLUTION: In encryption communication between arbitrary communication terminals designated by a network manager, each communication terminal decodes its communication content and transfers it to the security monitoring device therefrom. For encryption communication between communication terminals which is determined to be necessary, a decoded communication content is scanned (filtered) to attain the improvement of the security. In contrast, for encryption communication between communication terminals not particularly to be doubted, based on access management setting registered in a security management server in accordance with a predetermined security policy, the encryption communication is controlled on whether or not it is allowed. After securing predetermined security, loads required for communication processing and decoding processing concentrating on the security monitoring device are alleviated. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种网络安全管理系统，其能够改进网络安全管理，并且减少在改进之后集中在安全监控设备上的通信处理和解码处理所需的负载。解决方案：在由网络管理员指定的任意通信终端之间的加密通信中，每个通信终端对其通信内容进行解码并将其传送到安全监控设备。对于被确定为需要的通信终端之间的加密通信，扫描（过滤）解码的通信内容以获得安全性的提高。相反，对于不特别怀疑的通信终端之间的加密通信，基于根据预定安全策略登记在安全管理服务器中的访问管理设置，对是否允许加密通信进行控制。在确保了预定安全性之后，减轻了集中在安全监控设备上的通信处理和解码处理所需的负载。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2005065004A Method, device and program for inspecting encrypted communication data 审中-公开
标题翻译：用于检查加密通信数据的方法，设备和程序
公开(公告)号：JP2005065004A
公开(公告)日：2005-03-10
申请号：JP2003294224
申请日：2003-08-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUKIOKA YOICHI
IPC分类号： H04L9/08 , H04L12/66
摘要： PROBLEM TO BE SOLVED: To perform the appropriate data inspection of encrypted communication data.
SOLUTION: When a transmitting side communication terminal 1-1 and a receiving side communication terminal 1-2 (hereinafter communication terminals) perform encryption communication using an encryption key, a third communication apparatus 1-3 for transferring the communication data interrupts encrypted communication data whose contents cannot be confirmed by network security management criteria. The third communication apparatus 1-3 notifies the communication terminals 1-1 and/or 1-2 that the encrypted communication data are interrupted. After mutual authentication procedures are exchanged between the communication terminals 1-1 or 1-2 that has received the notification and the third communication apparatus, an encryption communication path is generated between both the apparatuses. The encryption key is transmitted from the communication terminal 1-1 or 1-2 to the third communication apparatus 1-3 through the encryption communication path. The third communication apparatus 1-3 uses the received encryption key to decrypt contents of the encryption communication data and performs contents inspection, filtering processing or the like.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：执行加密通信数据的适当数据检查。解决方案：当发送侧通信终端1-1和接收侧通信终端1-2（以下称为通信终端）使用加密密钥进行加密通信时，用于传送通信数据的第三通信装置1-3中断加密内容无法通过网络安全管理标准确认的通信数据。第三通信装置1-3向通信终端1-1和/或1-2通知加密的通信数据被中断。在已经接收到通知的通信终端1-1或1-2之间交换了相互认证过程和第三通信装置之后，在两个设备之间生成加密通信路径。加密密钥通过加密通信路径从通信终端1-1或1-2发送到第三通信装置1-3。第三通信装置1-3使用接收到的加密密钥对加密通信数据的内容进行解密，进行内容检查，过滤处理等。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2006033707A Filtering system, filtering device, internal terminal, and filtering method 有权
标题翻译：过滤系统，过滤装置，内部终端和过滤方法
公开(公告)号：JP2006033707A
公开(公告)日：2006-02-02
申请号：JP2004212992
申请日：2004-07-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TSUKIOKA YOICHI
IPC分类号： H04L12/66 , H04L12/22
摘要： PROBLEM TO BE SOLVED: To provide a filtering system 10 which can adequately filter communication data even if the communication data is encoded, and which can reduce a processing load of a filtering device 40.
SOLUTION: A filtering device 40 acquires information required for filtering of communication data and a decoding key for decoding the communication data encoded as declaration information from an internal terminal 20 before encoding communication. The filtering device 40 filters the communication data on the basis of the information acquired. Also, the filtering device 40 decodes the encoded communication data at a predetermined timing by using the decoding key acquired as the declaration information, and determines whether or not it coincides with the declaration information acquired.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种即使通信数据被编码也能适当地过滤通信数据并且可以减少过滤装置40的处理负荷的过滤系统10.解决方案：过滤装置40 在编码通信之前，从内部终端20获取用于过滤通信数据所需的信息和用于对从编码为声明信息的通信数据进行解码的解码密钥。过滤装置40根据获取的信息对通信数据进行过滤。而且，过滤装置40通过使用作为声明信息获取的解码密钥，在预定的定时对编码的通信数据进行解码，并且确定其是否与所获取的声明信息一致。版权所有（C）2006，JPO＆NCIPI

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