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    Communications device and communications program
    1.
    发明授权
    Communications device and communications program 有权
    通信设备和通信程序

    公开(公告)号：US07558956B2

    公开(公告)日：2009-07-07

    申请号：US11049686

    申请日：2005-02-04

    申请人： Atsuhiro Tsuji ,  Yukie Gotoh ,  Keiichi Takagaki ,  Chuan-Fen Chiu

    发明人： Atsuhiro Tsuji ,  Yukie Gotoh ,  Keiichi Takagaki ,  Chuan-Fen Chiu

    IPC分类号： H04L9/00 ,  H04K1/00

    CPC分类号： H04L63/164 ,  H04L29/06 ,  H04L67/14 ,  H04L69/329

    摘要： A transmitting side communications device transmits a Delete Payload of an IPsec SA using an ISAKMP SA that satisfies a transmission condition, and more preferably using all ISAKMP SAs that exist between communications devices. The receiving side communications device accepts a Delete Payload by an ISAKMP SA that satisfies a reception condition, and preferably any ISAKMP SA that exists between the communications devices. As long as there exists an IPsec SA that was established using the ISAKMP SA, it remains possible to maintain an ISAKMP SA, without completely deleting it, and to transmit and receive a Delete Payload by that ISAKMP SA.

    摘要翻译： 发送侧通信装置使用满足发送条件的ISAKMP SA，更优选使用存在于通信装置之间的所有ISAKMP SA来发送IPsec SA的删除有效载荷。 接收侧通信装置接受由满足接收条件的ISAKMP SA的删除有效载荷，优选接收存在于通信装置之间的任何ISAKMP SA。 只要存在使用ISAKMP SA建立的IPsec SA，则可以在不完全删除ISAKMP SA的情况下维护ISAKMP SA，并且可以通过ISAKMP SA发送和接收删除有效载荷。

    Communications device and communications program
    2.
    发明申请
    Communications device and communications program 有权
    通信设备和通信程序

    公开(公告)号：US20050185644A1

    公开(公告)日：2005-08-25

    申请号：US11049686

    申请日：2005-02-04

    申请人： Atsuhiro Tsuji ,  Yukie Gotoh ,  Keiichi Takagaki ,  Chuan-Fen Chiu

    发明人： Atsuhiro Tsuji ,  Yukie Gotoh ,  Keiichi Takagaki ,  Chuan-Fen Chiu

    IPC分类号： H04L29/06 ,  H04L29/08 ,  H04L12/28

    CPC分类号： H04L63/164 ,  H04L29/06 ,  H04L67/14 ,  H04L69/329

    摘要： A transmitting side communications device transmits a Delete Payload of an IPsec SA using an ISAKMP SA that satisfies a transmission condition, and more preferably using all ISAKMP SAs that exist between communications devices. The receiving side communications device accepts a Delete Payload by an ISAKMP SA that satisfies a reception condition, and preferably any ISAKMP SA that exists between the communications devices. As long as there exists an IPsec SA that was established using the ISAKMP SA, it remains possible to maintain an ISAKMP SA, without completely deleting it, and to transmit and receive a Delete Payload by that ISAKMP SA.

    摘要翻译： 发送侧通信装置使用满足发送条件的ISAKMP SA，更优选使用存在于通信装置之间的所有ISAKMP SA来发送IPsec SA的删除有效载荷。 接收侧通信装置接受由满足接收条件的ISAKMP SA的删除有效载荷，优选接收存在于通信装置之间的任何ISAKMP SA。 只要存在使用ISAKMP SA建立的IPsec SA，则可以在不完全删除ISAKMP SA的情况下维护ISAKMP SA，并且可以通过ISAKMP SA发送和接收删除有效载荷。

    Communication device, communication system, and algorithm selection method
    3.
    发明授权
    Communication device, communication system, and algorithm selection method 失效
    通信设备，通信系统和算法选择方法

    公开(公告)号：US07313234B2

    公开(公告)日：2007-12-25

    申请号：US10695936

    申请日：2003-10-30

    申请人： Keiichi Takagaki ,  Hiroshi Yokota ,  Yukie Gotoh ,  Atsuhiro Tsuji ,  Masaaki Tamai

    发明人： Keiichi Takagaki ,  Hiroshi Yokota ,  Yukie Gotoh ,  Atsuhiro Tsuji ,  Masaaki Tamai

    IPC分类号： H04L9/28

    CPC分类号： H04L9/0891 ,  H04L2209/601

    摘要： An encryption information determination section in a communication device negotiates an encryption algorithm to be used for encrypted communications with an encryption information determination section in a network camera, which is a communication counterpart. At this time, the encryption algorithm to be selected is varied depending on the CPU load of the communication device. That is, if the CPU utilization rate is high, a low-load encryption algorithm is selected, and if the CPU utilization rate is low, a high-load encryption algorithm is selected. A encryption/decryption processing section performs code processing using the encryption algorithm selected by the encryption information determination section.

    摘要翻译： 通信装置中的加密信息确定部分协商用于与作为通信对方的网络摄像机中的加密信息确定部分进行加密通信的加密算法。 此时，要选择的加密算法根据通信设备的CPU负载而变化。 也就是说，如果CPU利用率高，则选择低负载加密算法，如果CPU利用率低，则选择高负载加密算法。 加密/解密处理部分使用由加密信息确定部分选择的加密算法来执行代码处理。

    COMMUNICATION APPARATUS
    4.
    发明申请
    COMMUNICATION APPARATUS 审中-公开
    通讯设备

    公开(公告)号：US20110019555A1

    公开(公告)日：2011-01-27

    申请号：US12439758

    申请日：2007-09-12

    申请人： Yukie Gotoh ,  Hiroshi Yokota ,  Atsuhiro Tsuji ,  Keiichi Takagaki ,  Yosuke Matsushita ,  Kyosuke Osuka

    发明人： Yukie Gotoh ,  Hiroshi Yokota ,  Atsuhiro Tsuji ,  Keiichi Takagaki ,  Yosuke Matsushita ,  Kyosuke Osuka

    IPC分类号： H04L12/26 ,  G08C17/00 ,  H04W52/02

    CPC分类号： H04W52/0241 ,  H04W88/02 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/23

    摘要： To provide a communication apparatus for achieving further improvements in communication quality and power saving effect, without depending on network environments. A portable terminal (211) as a communication apparatus includes: a communication I/F unit (108) performing data transmission/reception with a transmitter apparatus (203) on a communication protocol having flow control such as TCP; a power control unit (106) switching power on and off to the communication I/F unit (108); and a suppression/resumption control unit (104) determining cycle interval Tc and cycle data size Dc according to communication quality required by a communication application program and, per cycle interval Tc, causing data of cycle data size Dc to be transmitted in a burst state, suppressing data transmission from the transmitter apparatus (203), and causing the power control unit (106) to power off the communication I/F unit (108) while the data transmission is suppressed (T2 to T3), using the flow control mechanism.

    摘要翻译： 提供一种用于实现通信质量和省电效果的进一步改进的通信装置，而不依赖于网络环境。 作为通信装置的便携式终端（211）包括：通信I / F单元（108），对具有诸如TCP的流量控制的通信协议执行与发送装置（203）的数据发送/接收; 功率控制单元（106），其向所述通信I / F单元（108）接通和断开电力; 抑制/恢复控制单元（104）根据通信应用程序所需的通信质量确定周期间隔Tc和周期数据大小Dc，并且每个周期间隔Tc使周期数据大小Dc的数据以突发状态发送 ，抑制从发送装置（203）的数据发送，并且在数据发送被抑制（T2〜T3）时使电力控制单元（106）断开通信I / F单元（108），使用流量控制机构 。

    Scene-change detection method that distinguishes between gradual and sudden scene changes
    6.
    发明授权
    Scene-change detection method that distinguishes between gradual and sudden scene changes 失效
    区分渐进和突发场景变化的场景变化检测方法

    公开(公告)号：US5801765A

    公开(公告)日：1998-09-01

    申请号：US739995

    申请日：1996-10-30

    申请人： Yukie Gotoh ,  Toshikazu Tatsumi ,  Hiroshi Akahori

    发明人： Yukie Gotoh ,  Toshikazu Tatsumi ,  Hiroshi Akahori

    IPC分类号： H04N5/783 ,  G06F17/30 ,  G11B27/11 ,  G11B27/28 ,  H04N5/14 ,  H04N5/91 ,  H04N7/18

    CPC分类号： H04N5/147 ,  G11B27/11 ,  G11B27/28 ,  H04N19/142 ,  H04N19/179 ,  H04N19/87

    摘要： A video for one frame is captured and two adjacent frames are compared, the result of which is detected as a change degree of the video. Then, based on the magnitude of the change degree, it is determined whether a scene change (SC) exists. If an SC exists, it is examined whether its change degree alters rapidly or gradually, to determine the SC as a momentum or gradual SC. For the momentum SC, its determination point is detected as the momentum SC. For the gradual SC, its determination points is detected as the start of the gradual SC, thereafter, its end is detected. According, for one gradual SC, plural SC's are not detected and a midway illegible video is not indicated as an index picture.

    摘要翻译： 拍摄一帧的视频，并比较两个相邻的帧，其结果被检测为视频的变化程度。 然后，基于变化度的大小，确定是否存在场景变化（SC）。 如果SC存在，则检查其变化程度是否迅速或逐渐变化，以将SC确定为动量或逐渐的SC。 对于动量SC，其确定点被检测为动量SC。 对于逐渐的SC，其确定点被检测为逐渐的SC的开始，此后检测其结束。 根据一个渐进的SC，不检测多个SC，并且中途不可视的视频不被指示为索引图。