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    • 93. 发明授权
    • Digital content protection system
    • 数字内容保护系统
    • US06859535B1
    • 2005-02-22
    • US09419240
    • 1999-10-15
    • Makoto TatebayashiYutaka NakamuraShunji HaradaMasayuki Kozuka
    • Makoto TatebayashiYutaka NakamuraShunji HaradaMasayuki Kozuka
    • G09C1/00G06F1/00G06F21/10G11B20/00H04N7/167H04L9/00
    • G11B20/00086G06F21/10G06F2221/0797G11B20/00188G11B20/00195G11B20/0021G11B20/00253G11B20/00413G11B20/00507G11B20/00528
    • The media inherent key storing unit 220 prestores an inherent key Ki, the conversion unit 230 generates an encrypted inherent key Ji from the inherent key read from the media inherent key storing unit 220, the random number generating unit 331 generates a random number R1, the encryption unit 252 generates an encrypted random number S1, the decryption unit 333 generates a random number R′1 from the encrypted random number R1, and the mutual authentication control unit 334 compares the random number R′1 with the random number R1 and, if the random number R′1 matches the random number R1, judges that the memory card 200 is an authorized device. If the memory card 200 and the memory card writer have successfully authenticated each other, the memory card writer encrypts a content using a decrypted inherent key. If the memory card 200 and the memory card reader have successfully authenticated each other, the memory card reader decrypts an encrypted content using the decrypted inherent key.
    • 媒体固有密钥存储单元220预先存储固有密钥Ki,转换单元230从从媒体固有密钥存储单元220读取的固有密钥生成加密固有密钥Ji,随机数生成单元331生成随机数R1, 加密单元252生成加密的随机数S1,解密单元333从加密的随机数R1生成随机数R'1,并且相互认证控制单元334将随机数R'1与随机数R1进行比较,如果 随机数R'1与随机数R1匹配,判断存储卡200是授权装置。 如果存储卡200和存储卡写卡器已成功认证,则存储卡写入器使用解密的固有密钥加密内容。 如果存储卡200和存储卡阅读器已经成功地认证了彼此,则存储卡读卡器使用解密的固有密钥来解密加密的内容。
    • 94. 发明申请
    • DYNAMIC SEMICONDUCTOR STORAGE DEVICE AND METHOD OF READING AND WRITING OPERATIONS THEREOF
    • 动态半导体存储器件及其读取和写入操作的方法
    • US20050024965A1
    • 2005-02-03
    • US10710207
    • 2004-06-25
    • Yutaka Nakamura
    • Yutaka Nakamura
    • G11C11/409G11C7/00G11C7/02
    • G11C11/4091G11C7/02G11C7/08G11C7/22G11C11/4076G11C2207/2281G11C2207/229
    • To provide a dynamic semiconductor storage device featuring reduced power consumption and faster operation of a sense amplifier. The drain of a transistor N7 constituting an N-type sense amplifier NSAt is connected to a shared line SA, while the drain of a transistor N8 is connected to a shared line /SA. The drain of a transistor N9 constituting an N-type sense amplifier NSAb is connected to a shared line SA, while the drain of a transistor N10 is connected to a shared line /SA. The threshold voltages of transistors N7 to N10 range from 0.2V to 0.3V, which are lower than a threshold voltage of transistors P1 to P3. A supply voltage Vdd is applied to the gates of isolators BLIt and BLIb to clamp the supply voltage Vdd by the isolators BLIt and BLIb so as to set the internal voltage of an array to 0.8V, which is lower than the supply voltage Vdd by the threshold voltage of transistors N3 to N6.
    • 提供一种动态半导体存储器件,其具有降低的功耗和更快的读出放大器的操作。 构成N型读出放大器NSAt的晶体管N7的漏极连接到共享线路SA,而晶体管N8的漏极连接到共享线路/ SA。 构成N型读出放大器NSAb的晶体管N9的漏极连接到共享线路SA,而晶体管N10的漏极连接到共享线路/ SA。 晶体管N7至N10的阈值电压的范围为0.2V至0.3V,低于晶体管P1至P3的阈值电压。 电源电压Vdd被施加到隔离器BLIt和BLIb的栅极,以通过隔离器BLIt和BLIb钳位电源电压Vdd,以将阵列的内部电压设置为低于电源电压Vdd的0.8V 晶体管N3至N6的阈值电压。
    • 97. 发明授权
    • Radio communication equipment having a floating connector
    • 具有浮动连接器的无线电通信设备
    • US06554640B1
    • 2003-04-29
    • US09584084
    • 2000-06-01
    • Noboru KoikeYutaka Nakamura
    • Noboru KoikeYutaka Nakamura
    • H01R300
    • H01R13/6315
    • A radio communication equipment having a battery compartment and a battery pack provided in the battery compartment, the equipment including a first connector block having a female portion provided at the battery pack, and the first connector block having a first contact with a first contact portion and a second contact portion facing the first contact portion, and a second connector block having a male portion provided at the battery, and the second connector block having a second contact having elasticity with a third contact portion and a fourth contact portion facing the third contact portion, wherein the second connector block is engaged with the first connector block, and the third contact portion is pressed against the first contact portion and the fourth contact portion is pressed against the second contact portion by the elasticity of the second contact.
    • 一种无线电通信设备,具有设置在所述电池室中的电池室和电池组,所述设备包括:第一连接器块,具有设置在所述电池组件上的阴部分,所述第一连接器块具有与第一接触部分的第一接触;以及 面对第一接触部分的第二接触部分和具有设置在电池上的阳部分的第二连接器块,并且第二连接器块具有具有弹性的第二接触件,第三接触部分和面向第三接触部分的第四接触部分 其中第二连接器块与第一连接器块接合,并且第三接触部分被按压在第一接触部分上,并且第四接触部分被第二接触件的弹性压靠在第二接触部分上。
    • 98. 发明授权
    • Micro actuator having clamping parts
    • 具有夹紧部件的微型致动器
    • US06450702B1
    • 2002-09-17
    • US09716331
    • 2000-11-21
    • Hitoshi KomoriyaYutaka NakamuraTakao Hirahara
    • Hitoshi KomoriyaYutaka NakamuraTakao Hirahara
    • G02B636
    • H02N1/008G02B6/4202
    • There is provided a micro actuator displacing a micro portion by use of an electrostatic force, the micro actuator comprising a first stationary part; a displacement part spaced apart from the first stationary part by a predetermined distance in a confronting manner, the displacememt part being displaceable relative to the first stationary part; a second stationary part; the lock parts being displaceable relative to the second stationary part; wherein the displacement part is displaced by application of a voltage between the first stationary part and the displacement part, the lock parts being displaced by application of a voltage between the second stationary part and the lock parts, and wherein the lock parts clamp the displacement part with no voltage applied, the lock parts releasing the displacement part with a voltage applied.
    • 提供了通过使用静电力来移动微小部分的微型致动器,微致动器包括第一静止部分; 位移部件,以相对的方式与第一固定部分间隔预定距离,位移部分可相对于第一固定部分移动; 第二静止部分; 锁定部件可相对于第二固定部件移动; 其中所述位移部分通过在所述第一静止部分和所述位移部分之间施加电压而移位,所述锁定部分通过在所述第二固定部分和所述锁定部件之间施加电压而移位,并且其中所述锁定部分夹持所述位移部分 在没有施加电压的情况下,锁定部件施加电压而释放位移部分。