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    • 61. 发明申请
    • DIFFERENTIAL TRANSMISSION CIRCUIT AND ELECTRONIC DEVICE PROVIDED WITH THE SAME
    • 差分传输电路及其相应的电子设备
    • US20110279935A1
    • 2011-11-17
    • US13146423
    • 2010-01-28
    • Masaharu IwasaTomohiro Yamada
    • Masaharu IwasaTomohiro Yamada
    • H02H9/04
    • H03H7/0107H03H7/427
    • There is disclosed a differential transmission circuit capable of realizing a high resistance to electrostatic breakdown without deteriorating a transmission signal. The differential transmission circuit includes ESD protection elements 5 and 6 connected between transmission lines 3 and 4 and a ground, respectively, a common mode filter 9 in which an inductor element 7 serially connected between the transmission lines 3 and a transmission line 10, and an inductor element 8 serially connected between the transmission line 4 and a transmission line 11 are magnetically coupled to each other, ESD protection diodes 12 and 13 of which cathodes are connected to the transmission lines 10 and 11, respectively, and anodes thereof are connected to grounds, respectively, and resistors 14 and 15 of which one side terminals are connected to the transmission lines 10 and 11, respectively, and the other side terminals thereof are connected to transmission lines 16 and 17, respectively. Resistance values of the resistors 14 and 15 are set to 10 to 15 ohms, respectively, electrostatic capacitance values of the ESD protection elements 5 and 6 are less than 0.3 pF, respectively, and a clip voltage of each of the ESD protection diodes 12 and 13 is set to a value less than 10 V.
    • 公开了一种差分传输电路,其能够在不降低传输信号的情况下实现高静电击穿电阻。 差分传输电路包括分别连接在传输线3和4之间的ESD保护元件5和6和接地,共模滤波器9,其中串联连接在传输线3和传输线10之间的电感器元件7和 串联连接在传输线路4和传输线路11之间的电感器元件8彼此磁耦合,分别连接到传输线路10和11的阴极和其阳极的ESD保护二极管12和13连接到接地 ,电阻器14和15分别连接到传输线路10和11,其中一个侧面端子分别连接到传输线路10和11,并且其另一个侧面端子分别连接到传输线路16和17。 电阻器14和15的电阻值分别设置为10至15欧姆,ESD保护元件5和6的静电电容值分别小于0.3pF,并且每个ESD保护二极管12和 13设定为小于10V的值。
    • 65. 发明授权
    • Content reproducing apparatus authenticating detachable recording medium and authentication control method
    • 内容再现装置认证可拆卸记录介质和认证控制方法
    • US07657742B2
    • 2010-02-02
    • US10448941
    • 2003-05-30
    • Tomohiro Yamada
    • Tomohiro Yamada
    • H04L9/32
    • G11B20/00086H04L9/3263H04L2209/60
    • A content reproducing apparatus includes a CPU. The CPU executes an authentication process with a memory card at a time of starting reproduction. The reproducing apparatus, when succeeding in the authentication process, can obtain from the memory card a decryption key of encrypted music data. Accordingly, by decrypting encrypted content data separately obtained by use of the decryption key, it is possible to reproduce the music data. In such the authentication process, certificate data is utilized in an order which starts from registered identification numbers and, every time failing in the authentication process, is renewed to a next identification number. Consequently, an identification number of certificate data which succeeds in the authentication process is registered and utilized in a next authentication process and the subsequent.
    • 内容再现装置包括CPU。 CPU在开始再现时执行与存储卡的认证处理。 再现装置在认证过程中成功时,可以从存储卡获得加密的音乐数据的解密密钥。 因此,通过解密通过使用解密密钥分别获得的加密内容数据,可以再现音乐数据。 在这种认证处理中,证书数据以从注册的识别号码开始的顺序被使用,并且每次在认证过程中失败时,更新为下一个识别号码。 因此,在下一个认证处理和随后的认证处理中登记并利用在认证处理中成功的证书数据的标识号。
    • 68. 发明授权
    • Inspection method, inspection apparatus, and polarization method for piezoelectric element
    • 压电元件的检测方法,检验装置和极化方法
    • US07525324B2
    • 2009-04-28
    • US11856351
    • 2007-09-17
    • Takao OhnishiTomohiro YamadaTakatoshi Nehagi
    • Takao OhnishiTomohiro YamadaTakatoshi Nehagi
    • G01R29/22
    • G01R29/22B41J2/0451B41J2/04513B41J2/04541B41J2/04581B41J2/14201H01L41/257
    • A method for inspecting a piezoelectric element includes first-inspection-signal application step of applying to the piezoelectric element a first inspection signal Vp(1) having a first predetermined voltage waveform; first-characteristic-value measurement step of measuring, as a first characteristic value, an electrical characteristic value of the piezoelectric element after application of the first inspection signal; second-inspection-signal application step of applying to the piezoelectric element a second inspection signal Vp(2) having a second predetermined voltage waveform and an electrical power greater than that of the first inspection signal; second-characteristic-value measurement step of measuring, as a second characteristic value, the electrical characteristic value of the piezoelectric element after application of the second inspection signal; and anomaly determination step of determining whether or not the piezoelectric element is anomalous on the basis of a value corresponding to the difference between the measured second characteristic value and the measured first characteristic value.
    • 一种用于检查压电元件的方法包括:第一检查信号施加步骤,向所述压电元件施加具有第一预定电压波形的第一检查信号Vp(1); 第一特征值测量步骤,在施加第一检查信号之后测量压电元件的电特性值作为第一特征值; 第二检查信号施加步骤,向所述压电元件施加具有大于所述第一检查信号的第二预定电压波形和电功率的第二检查信号Vp(2) 第二特征值测量步骤,在施加第二检查信号之后测量压电元件的电特性值作为第二特征值; 以及异常判定步骤,基于与所测量的第二特征值和测量的第一特征值之间的差对应的值,确定压电元件是否异常。