Signal transmission on coaxial cable
    62.
    发明专利
    Signal transmission on coaxial cable 审中-公开
    同轴电缆信号传输

    公开(公告)号:JP2003298444A

    公开(公告)日:2003-10-17

    申请号:JP2003020702

    申请日:2003-01-29

    Inventor: COUET JEAN-YVES

    CPC classification number: H04H40/90 H04B3/52 H04L5/023 H04N7/20

    Abstract: PROBLEM TO BE SOLVED: To disclose a receiver in which a signal modulated in a transmission band to be transmitted on a coaxial cable is generated by receiving several initial signals to be modulated in a same initial frequency band and/or distinct initial frequency bands.
    SOLUTION: The receiver is provided with a selector capable of selecting several signals from among the received signals, a mixer capable of transforming the selected signal into a signal at least partly in the transmission band for each selected signal, a filter capable of extracting from the transformed signal a signal associated with a portion of the transmission band from among several at least partly distinct portions of the transmission band, and a means for forming the signal modulated in the transmission band from signals associated with the transmission band portions.
    COPYRIGHT: (C)2004,JPO

    Abstract translation: 要解决的问题:公开一种接收机,其中通过在相同的初始频带和/或不同的初始频率中接收要调制的几个初始信号来产生在同轴电缆上传输的传输频带中调制的信号 乐队。 解决方案:接收机设置有能够从接收信号中选择几个信号的选择器,能够将所选择的信号变换成至少部分地针对每个所选信号的传输频带的信号的混频器,能够 从所述变换的信号中提取与所述传输频带的几个至少部分不同的部分中的所述传输频带的一部分相关联的信号,以及用于在与所述传输频带部分相关联的信号中形成在所述传输频带中调制的信号的装置。 版权所有(C)2004,JPO

    Mc/cdma data transmission method
    63.
    发明专利
    Mc/cdma data transmission method 审中-公开
    MC / CDMA数据传输方法

    公开(公告)号:JP2003008545A

    公开(公告)日:2003-01-10

    申请号:JP2002164488

    申请日:2002-06-05

    Inventor: ISSON OLIVIER

    CPC classification number: H04B1/7087 H04L5/026

    Abstract: PROBLEM TO BE SOLVED: To provide a method for MC/CDMA transmission of data between nodes of a network. SOLUTION: The method includes assigning to each node at least one spread matrix, a set of data of at least one datum to be transmitted by a node being multiplied by the spread matrix which is associated therewith and the product being then transmitted on a group of carriers in at least one predetermined set of sampled forming at least one OFDM symbol, forming symbols to be transmitted all having the same duration, whatever the transmit node, and adding to each transmitted symbol a cyclic prefix(PF) and a cyclic suffix(SF) representing a predetermined number of samples, respectively of the end and of the beginning of the symbol.

    Abstract translation: 要解决的问题:提供一种用于网络节点之间的数据的MC / CDMA传输的方法。 解决方案:该方法包括向每个节点分配至少一个扩展矩阵,由要被发送的至少一个数据的一组数据乘以与之相关联的扩展矩阵,然后将该乘积发送到一组 在至少一个采样的载波中形成至少一个OFDM符号,形成全部具有相同持续时间的符号,无论发射节点如何,并且向每个发射符号添加循环前缀(PF)和循环后缀(SF) )分别表示符号的结束和开始的预定数量的样本。

    Switching circuit
    64.
    发明专利
    Switching circuit 审中-公开
    切换电路

    公开(公告)号:JP2000077650A

    公开(公告)日:2000-03-14

    申请号:JP23987499

    申请日:1999-08-26

    CPC classification number: H03K17/16 H03K17/732

    Abstract: PROBLEM TO BE SOLVED: To provide a new switching circuit which requires no filter by including a gate turn-off thyrister so biased as to be on at always and further including a controllable switch and a capacitor connected in parallel between a gate and a supply line.
    SOLUTION: An electric power supplied between terminals 2 and 3 from a supply voltage source Vac, a main line voltage 220 V for example, is tried to be limited between both ends of a load 1. For this purpose, a switching circuit 9 is used. The switching circuit 9 comprises a switch 5, a resistor R1, a reference diode Z, and resistor bridges R2 and R3. Further, a capacitor C' is included parallel to a transistor T. The switching circuit 9 is formed to be monolithic, except for the capacitor C', in a first conductive type, N-type for example, semiconductor substrate, for example a silicon.
    COPYRIGHT: (C)2000,JPO

    Abstract translation: 要解决的问题:提供一种新的开关电路,其不需要滤波器,该开关电路通过包括一个偏置的导通关断可控硅器件,其总是进一步包括可控开关和在栅极和电源线之间并联连接的电容器 。 解决方案:从负载1两端的电源电压源Vac(例如主线电压为220V)的端子2和3之间供电的电力被试图限制在负载1的两端之间。为此,使用开关电路9 。 开关电路9包括开关5,电阻器R1,参考二极管Z和电阻桥R2和R3。 此外,电容器C'与晶体管T并联。开关电路9形成为除了电容器C'之外是单片的,处于第一导电类型,例如N型半导体衬底,例如硅 。

    Cryptographic calculation method and device using secret key
    65.
    发明专利
    Cryptographic calculation method and device using secret key 审中-公开
    CRYPTOGRAPHIC计算方法和使用秘密钥匙的设备

    公开(公告)号:JP2008295109A

    公开(公告)日:2008-12-04

    申请号:JP2008232726

    申请日:2008-09-10

    Abstract: PROBLEM TO BE SOLVED: To mask a secret key K
    0 to protect a DES cryptographic method from an SPA attack, and to provide respective different updated derivative calculation keys M'
    1 , M'
    i in each implementation of the method.
    SOLUTION: Each step in the DES method has a multiple-key calculation step ET2 for calculating the updated derivative keys M'
    1 , M'
    i from a derivative key calculated previously, based on a known key calculation method during a prior key calculation step. The first updated derivative key M'
    1 is acquired from the secret key K0.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:为了保护秘密密钥K 0 以保护DES加密方法免受SPA攻击,并提供各自不同的更新的导数计算密钥M' SB>,M' i 。 解决方案:DES方法中的每个步骤具有多项计算步骤ET2,用于从导数密钥计算更新的推导密钥M',SB“1”/“SB”i 以前的密钥计算步骤中已知的密钥计算方法。 从秘密密钥K0获取第一更新的导数密钥M' 1 。 版权所有(C)2009,JPO&INPIT

    Secure encryption method and device
    66.
    发明专利
    Secure encryption method and device 审中-公开
    安全加密方法和设备

    公开(公告)号:JP2008295108A

    公开(公告)日:2008-12-04

    申请号:JP2008232720

    申请日:2008-09-10

    Abstract: PROBLEM TO BE SOLVED: To protect a component from a physical attack for acquiring information on an encryption key, from the power consumption of the component or from electromagnetic radiation by implementing an encryption method.
    SOLUTION: The invention comprises N cycles of calculation successively carried out to obtain an output from an input and a secret key. The invention is characterised in that it consists in: producing a first masking level to mask the input so that each data used or produced by a cycle of calculation should be masked, and producing a second masking level to mask data manipulated within each cycle of calculation.
    COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题:通过实施加密方法来保护组件免受物理攻击以从组件的功耗或电磁辐射获取关于加密密钥的信息。 解决方案:本发明包括连续执行的N个循环的计算以获得来自输入和秘密密钥的输出。 本发明的特征在于它包括:产生第一屏蔽电平以屏蔽输入,使得应该屏蔽由计算周期使用或产生的每个数据,并产生第二掩蔽电平以屏蔽在每个计算周期内操纵的数据 。 版权所有(C)2009,JPO&INPIT

    Correction of mismatches between two i and q channels
    67.
    发明专利
    Correction of mismatches between two i and q channels 有权
    纠正两个I和Q通道之间的错配

    公开(公告)号:JP2007020178A

    公开(公告)日:2007-01-25

    申请号:JP2006185734

    申请日:2006-07-05

    Inventor: MOUTARD ARNAUD

    CPC classification number: H03D3/009 H04B1/30 H04L27/3863

    Abstract: PROBLEM TO BE SOLVED: To correct mismatches between I and Q channels. SOLUTION: The present invention relates to a method for correcting mismatches between a digital signal in phase and a digital signal in quadrature originating from a signal broadcasted by a terrestrial channel, and including a phase correction method. A set of first error values is measured during a first period. A current value of a second error is determined based on a sum of the first error values. The current second error value is compared with a previous second error value stored in a memory. The value of a current phase shift correction is chosen from two phase shift correction values, based on the result of the comparison and the value of a previous phase shift correction. The value of the chosen current phase shift correction is added to the previous phase shift to obtain a current phase shift. This current phase shift is introduced between the digital signal in phase and the digital signal in quadrature. The current second error value and the current phase shift correction value are stored in the memory. These steps are repeated. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:纠正I和Q通道之间的不匹配。 解决方案:本发明涉及一种用于校正相位数字信号与源自由地面信道广播的信号的正交数字信号之间的失配并且包括相位校正方法的方法。 在第一个周期内测量一组第一个误差值。 基于第一误差值的和来确定第二误差的当前值。 将当前的第二误差值与存储在存储器中的先前的第二误差值进行比较。 基于比较的结果和先前的相移校正的值,从两个相移校正值中选择当前相移校正的值。 所选择的当前相移校正的值被加到先前的相移以获得当前的相移。 该电流相移在数字信号同相和正交数字信号之间引入。 当前的第二误差值和当前的相移校正值被存储在存储器中。 重复这些步骤。 版权所有(C)2007,JPO&INPIT

    Protection of power transistor
    68.
    发明专利
    Protection of power transistor 审中-公开
    功率晶体管的保护

    公开(公告)号:JP2006148886A

    公开(公告)日:2006-06-08

    申请号:JP2005311067

    申请日:2005-10-26

    Inventor: FICHERA PIETRO

    CPC classification number: H03K17/0822 H03K17/122

    Abstract: PROBLEM TO BE SOLVED: To provide a method for protecting a transistor for controlling the supply of an at least partially inductive load. SOLUTION: The present invention relates to a circuit for protecting a transistor including at least one break-over component inserted between a first conduction terminal and a control terminal, in serial inverse connection with a unidirectional conductor and the circuit includes: a resistor in series with the break-over component; and a controllable current source between a terminal of the unidirectional conductor, opposed to the transistor, and a second conduction terminal of the transistor. The current source is controlled by a current in the transistor. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题:提供一种用于保护用于控制至少部分感性负载的供应的晶体管的方法。 解决方案:本发明涉及一种用于保护晶体管的电路,其包括插入在第一导通端子和控制端子之间的至少一个断开元件,与单向导体串联反向连接,并且该电路包括:电阻器 与突破组件串联; 以及与晶体管相对的单向导体的端子与晶体管的第二导通端子之间的可控电流源。 电流源由晶体管中的电流控制。 版权所有(C)2006,JPO&NCIPI

    Method and apparatus for image interpolation system based on motion estimation and compensation
    69.
    发明专利
    Method and apparatus for image interpolation system based on motion estimation and compensation 有权
    基于运动估计和补偿的图像插值系统的方法和装置

    公开(公告)号:JP2005341580A

    公开(公告)日:2005-12-08

    申请号:JP2005152135

    申请日:2005-05-25

    Inventor: NICOLAS MARINA

    Abstract: PROBLEM TO BE SOLVED: To provide a motion estimating method and apparatus for processing an image to be inserted between a preceding source image and a succeeding source image in an image sequence. SOLUTION: Each image is divided into pixel blocks related to a motion vector. With respect to the present block of an image under processing, a vector related to the block of the image under processing and/or a vector related to a block of a processed image is selected (step 101). Candidate vectors are generated from the selected vector (step 102). Errors are calculated for each candidate vector (step 103). Penalty is determined, based on the value of a pixel of a pixel block which is in the preceding source image and in which candidate motion vectors point out the current block therefrom and/or based on the pixel value of a pixel block which is in the succeeding source image and is pointed out from the current block by candidate motion vectors (step 104). COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题:提供一种运动估计方法和装置,用于处理在图像序列中在先前的源图像和后续的源图像之间插入的图像。

    解决方案:每个图像被分成与运动矢量相关的像素块。 对于正在处理的图像的当前块,选择与处理中的图像的块相关的向量和/或与被处理图像的块有关的向量(步骤101)。 从所选择的向量生成候选向量(步骤102)。 针对每个候选向量计算错误(步骤103)。 基于前一源图像中的像素块的像素的值,并且其中候选运动矢量从其中指出当前块和/或基于像素块中的像素块的像素值来确定惩罚 并且通过候选运动矢量从当前块指出(步骤104)。 版权所有(C)2006,JPO&NCIPI

    Adaption demodulator
    70.
    发明专利
    Adaption demodulator 有权
    自适应解调器

    公开(公告)号:JP2005312051A

    公开(公告)日:2005-11-04

    申请号:JP2005122185

    申请日:2005-04-20

    CPC classification number: H04L27/06 H04L25/069

    Abstract: PROBLEM TO BE SOLVED: To optimize demodulation of an RF signal, especially the increase possible transmission flow to a given clock frequency. SOLUTION: In a method and a circuit for determining a binary state supported by an analog symbol, sampling of the symbol is performed with a sampling signal based on a frequency, having a period shorter than the duration of the symbol. A number of significant samples, smaller than the number of samples which would be obtained with a sampling of the symbol at said frequency, are selected, and the symbol state is determined, based on the samples selected. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题:优化RF信号的解调,特别是增加到给定时钟频率的可能的传输流。 解决方案:在用于确定由模拟符号支持的二进制状态的方法和电路中,使用具有比符号的持续时间短的周期的基于频率的采样信号来执行符号的采样。 选择小于在所述频率下用符号采样获得的样本数量的多个有效样本,并且基于所选择的样本来确定符号状态。 版权所有(C)2006,JPO&NCIPI

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