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    • 2. 发明申请
    • DECRYPTION DEVICE
    • US20080285750A1
    • 2008-11-20
    • US11838792
    • 2007-08-14
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • H04N7/167
    • H04L9/0894H04L2209/60
    • A decryption device includes: an internal-key storage section for storing an internal-key; a content-key storage section for storing a content-key; a determination section for determining whether or not a value of the content-key storage section in its initial state and a current value of the content-key storage section are different; and an operation section, the operation section including a first decrypting section which, when an encrypted content-key is input to the operation section, decrypts the encrypted content-key using the internal-key so as to obtain a content-key and stores the content-key in the content-key storage section, and a second decrypting section which, when an encrypted content is input to the operation section and the determination section determines that the value of the content-key storage section in its initial state and the current value of the content-key storage section are different, decrypts the encrypted content using the current value of the content-key storage section as a content-key so as to obtain a first output data and outputs the first output data to outside of the decryption device.
    • 解密装置包括:内部密钥存储部分,用于存储内部密钥; 内容密钥存储部分,用于存储内容密钥; 确定部分,用于确定内容密钥存储部分的初始状态的值和内容密钥存储部分的当前值是否不同; 以及操作部,所述操作部包括第一解密部,所述第一解密部在将加密内容密钥输入到所述操作部时,使用所述内部密钥对所述加密内容密钥进行解密,以获得内容密钥,并且存储 内容密钥存储部分中的内容密钥,以及第二解密部分,当加密内容被输入到操作部分并且确定部分确定内容密钥存储部分的值处于其初始状态和当前时间 内容密钥存储部的值不同,使用内容密钥存储部的当前值作为内容密钥来解密加密内容,以获得第一输出数据,并将第一输出数据输出到解密之外 设备。
    • 3. 发明授权
    • Decryption device
    • 解密装置
    • US07272856B2
    • 2007-09-18
    • US09829763
    • 2001-04-10
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • G06F7/04H04N7/167
    • H04L9/0894H04L2209/60
    • A decryption device includes: an internal-key storage section for storing an internal-key; a content-key storage section for storing a content-key; a determination section for determining whether or not a value of the content-key storage section in its initial state and a current value of the content-key storage section are different; and an operation section, the operation section including a first decrypting section which, when an encrypted content-key is input to the operation section, decrypts the encrypted content-key using the internal-key so as to obtain a content-key and stores the content-key in the content-key storage section, and a second decrypting section which, when an encrypted content is input to the operation section and the determination section determines that the value of the content-key storage section in its initial state and the current value of the content-key storage section are different, decrypts the encrypted content using the current value of the content-key storage section as a content-key so as to obtain a first output data and outputs the first output data to outside of the decryption device.
    • 解密装置包括:内部密钥存储部分,用于存储内部密钥; 内容密钥存储部分,用于存储内容密钥; 确定部分,用于确定内容密钥存储部分的初始状态的值和内容密钥存储部分的当前值是否不同; 以及操作部,所述操作部包括第一解密部,所述第一解密部在将加密内容密钥输入到所述操作部时,使用所述内部密钥对所述加密内容密钥进行解密,以获得内容密钥,并且存储 内容密钥存储部分中的内容密钥,以及第二解密部分,当加密内容被输入到操作部分并且确定部分确定内容密钥存储部分的值处于其初始状态和当前时间 内容密钥存储部的值不同,使用内容密钥存储部的当前值作为内容密钥来解密加密内容,以获得第一输出数据,并将第一输出数据输出到解密之外 设备。
    • 4. 发明授权
    • Encryption device and method
    • 加密设备和方法
    • US07640436B2
    • 2009-12-29
    • US11838792
    • 2007-08-14
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • Osamu ShibataTaihei YugawaTsutomu SekibeYoshiyuki SaitoToshihiko Otake
    • G06F11/30G06F7/04
    • H04L9/0894H04L2209/60
    • A device and method for encrypting content in an encryption device including a content-key storage section is disclosed. The method includes generating a content-key used for encrypting content based on random numbers and storing the generated content-key in the content-key storage section, encrypting the content-key used for encrypting the content so as to obtain an encrypted content-key and outputting the encrypted content-key to outside of the encryption device, determining whether or not a value of the content-key storage section in its initial state and a current value of the content-key storage section are different, and when it is determined that the value of the content-key storage section in its initial state and the current value of the content-key storage section are different, encrypting the content using the current value of the content-key storage section as a content-key so as to obtain a second output data and output the second output data to outside of the encryption device, wherein, for the determination step, a register stores a value of the content-key storage section at the time that said register receives a Power On Reset (POR) signal, and wherein the POR signal is a signal which pulses only once immediately after power-on or immediately after reset, so that the content-key storage section is in an initial state immediately after a corresponding power-on or reset of the encryption device.
    • 公开了一种用于加密包括内容密钥存储部分的加密装置中的内容的装置和方法。 该方法包括:生成用于基于随机数加密内容的内容密钥,并将生成的内容密钥存储在内容密钥存储部分中,对用于加密内容的内容密钥进行加密,以获得加密的内容密钥 并将加密的内容密钥输出到加密装置的外部,确定内容密钥存储部分的初始状态的值和内容密钥存储部分的当前值是否不同,并且当确定 内容密钥存储部分的初始状态的值和内容密钥存储部分的当前值不同,使用内容密钥存储部分的当前值作为内容密钥对内容进行加密,以便 获取第二输出数据并将第二输出数据输出到加密装置的外部,其中,对于确定步骤,寄存器存储内容密钥存储部分的值, 所述寄存器接收上电复位(POR)信号,并且其中POR信号是在上电或紧接复位后立即仅脉冲的信号,使得内容密钥存储部分在初始状态之后处于初始状态 相应的加密设备的加电或复位。
    • 5. 发明授权
    • Removable memory device, phase synchronizing method, phase synchronizing program, medium recording the same, and host terminal
    • 可移动存储设备,相位同步方法,相位同步程序,介质记录和主机终端
    • US07886085B2
    • 2011-02-08
    • US12295051
    • 2007-02-20
    • Hiroshi SuenagaOsamu ShibataNoriaki TakedaToru IwataTakaharu YoshidaYoshiyuki Saito
    • Hiroshi SuenagaOsamu ShibataNoriaki TakedaToru IwataTakaharu YoshidaYoshiyuki Saito
    • G06F13/00G06F3/00
    • H04L7/10G06F1/12H04L7/0008H04L7/033H04L7/044H04L7/046
    • An object of the present invention is to provide a technique to improve the data transmission efficiency which allows correct reception of the data at the same time. A removable memory device that transmits/receives data to and from a host terminal, which includes: a clock reception section that receives a transmission/reception clock, which is used for transmitting/receiving data between the host terminal and the removable memory device, from the host terminal; a phase synchronization pattern generation section that generates a phase synchronization pattern, which is for adjusting a phase of internal reception clock which the host terminal incorporates for receiving data from the removable memory device, based on the transmission/reception clock; and a transmission section that transmits the generated phase synchronization pattern to the host terminal, and in which the phase synchronization pattern includes a first level signal which lasts for at least two cycles, and a second level signal which follows the first level signal and lasts for one cycle, is provided.
    • 本发明的目的是提供一种提高数据传输效率的技术,其允许同时正确地接收数据。 一种向主机终端发送/接收数据的可移动存储装置,包括:接收用于在主机终端和可移动存储装置之间发送/接收数据的发送/接收时钟的时钟接收部分, 主机终端; 相位同步模式生成部,其基于所述发送接收时钟生成相位同步模式,所述相位同步模式用于调整所述主机终端结合的用于从所述可移动存储装置接收数据的内部接收时钟的相位; 以及发送部,其将所生成的相位同步模式发送到所述主机终端,并且所述相位同步模式包括持续至少两个周期的第一电平信号,以及在所述第一电平信号之后持续的第二电平信号, 提供一个循环。
    • 9. 发明授权
    • Optical transmission system
    • 光传输系统
    • US09002198B2
    • 2015-04-07
    • US13583102
    • 2011-10-28
    • Tsuyoshi IkushimaOsamu ShibataYoshiyuki Saito
    • Tsuyoshi IkushimaOsamu ShibataYoshiyuki Saito
    • H04B10/00H04B10/07H04B10/25
    • H04B10/07H04B10/2503
    • An optical transmission system for optically transmitting information between apparatuses via an optical transmission path. The system includes: a sending unit that emits, to the optical transmission path, excitation light for detecting an inter-apparatus connection via the path; a responding unit that receives the excitation light from the path and emits detection light to the path using light energy of the excitation light; a response receiving unit that receives the detection light from the path and outputs a detection light current; a detecting unit that detects presence/absence of the inter-apparatus connection based on the detection light current; a light signal transmitting unit that emits, to the path, a light signal for optically transmitting the information based on the detection result by the detecting unit; and a light signal receiving unit that receives the light signal from the path.
    • 一种用于经由光传输路径在设备之间光学传输信息的光传输系统。 该系统包括:发送单元,其向光传输路径发射用于检测经由路径的装置间连接的激励光; 响应单元,其从所述路径接收激发光,并且使用所述激发光的光能向所述路径发射检测光; 响应接收单元,其从所述路径接收所述检测光并输出检测光电流; 检测单元,其基于所述检测光电流来检测所述装置间连接的有无; 光信号发送单元,基于所述检测单元的检测结果向所述路径发射用于光信息发送的光信号; 以及从该路径接收光信号的光信号接收单元。