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    • 1. 发明专利
    • Quantum cryptographic communication device, communication terminal, and additional information transmission method
    • 量子通信设备,通信终端和附加信息传输方法
    • JP2007300515A
    • 2007-11-15
    • JP2006128075
    • 2006-05-02
    • Sony Corpソニー株式会社
    • SHINO KUNINORIKAWAMOTO YOHEIUKITA SHOICHI
    • H04L9/12H04B10/516H04B10/556H04B10/61H04B10/70
    • PROBLEM TO BE SOLVED: To transmit additional information such as a frame synchronization signal well from a transmitter-side terminal to a receiver-side terminal. SOLUTION: A pulse light from a light source 33 is divided into a signal light P1 and a reference light P2 by the transmitter-side terminal 30 and then the divided lights are sent out to a communication path 32. In quantum cryptographic communications, the light intensity of the signal light P1 is attenuated, but in the additional information transmission, the light intensity of the signal light P1 is not attenuated. In quantum cryptographic communications, random phase modulation is added to the signal light P1 per pulse so that the signal light P1 may have a predetermined phase selected among phases which constitute a plurality of bases. But, in the additional information transmission, the signal light P1 is made to have a phase which is not orthogonal to any of the plurality of phases which constitute the plurality of bases. In the additional information transmission, large level additional information is obtained as a homodyne detection output of the receiver-side terminal 31. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:从发射机侧终端向接收机侧终端良好地发送诸如帧同步信号的附加信息。 解决方案:来自光源33的脉冲光被发射机侧终端30分成信号光P1和参考光P2,然后将分光发送到通信路径32.在量子加密通信 信号光P1的光强度被衰减,但是在附加信息传输中,信号光P1的光强度不被衰减。 在量子密码通信中,随机相位调制被添加到每个脉冲的信号光P1,使得信号光P1可以具有从构成多个基底的相位中选择的预定相位。 但是,在附加信息发送中,使信号光P1具有与构成多个基底的多个相位中的任一个不正交的相位。 在附加信息传输中,获得作为接收机侧终端31的零差检测输出的大级附加信息。版权所有(C)2008,JPO&INPIT
    • 2. 发明专利
    • Phase information generation device and phase information generation method, transmitter and receiver
    • 相位信息生成装置和相位信息生成方法,发射机和接收机
    • JP2007088776A
    • 2007-04-05
    • JP2005274548
    • 2005-09-21
    • Sony Corpソニー株式会社
    • SHINO KUNINORIUKITA SHOICHIKAWAMOTO YOHEI
    • H04L27/20H04B10/2507H04B10/556H04B10/588
    • PROBLEM TO BE SOLVED: To transmit an n-value multivalue signal with less noise without using a complicated synchronous circuit. SOLUTION: Phase continuous optical signals Sop outputted from a light source 101 are made to impinge on a phase modulator 102. Input serial data Din are supplied from an input terminal 105 to a signal phase converter 104, and a clock CL synchronizing with each bit of the data Din is inputted from the input terminal 106 to the signal phase converter 104. The signal phase converter 104 creates phase information Ipm for obtaining phase modulating signals corresponding to data A of (m+1) bits that are converted from data M (multi-valued signals of n-ary) of m bits obtained by grouping the data Din into m bits and changed in value for each one clock, and outputs a control voltage Vct that is furthermore converted from the phase information Ipm. The phase modulator 102 phase-modulates the optical signals Sop on the basis of the control voltage Vct. The phase-modulated signals Spm outputted from the phase modulator 102 are transmitted to a receiving end through an optical fiber 103. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:在不使用复杂的同步电路的情况下传输噪声较小的n值多值信号。 解决方案:使从光源101输出的相位连续光信号Sop撞在相位调制器102上。输入串行数据Din从输入端105提供给信号相位转换器104,时钟CL与 数据Din的每一位从输入端子106输入到信号相位转换器104.信号相位转换器104产生相位信息Ipm,用于获得与从数据转换的(m + 1)位的数据A相对应的相位调制信号 通过将数据Din分组为m位并且每个时钟变化的值获得的M位的M位(n值的多值信号),并且输出进一步从相位信息Ipm转换的控制电压Vct。 相位调制器102基于控制电压Vct对光信号Sop进行相位调制。 从相位调制器102输出的相位调制信号Spm通过光纤103发送到接收端。(C)2007年,JPO和INPIT
    • 3. 发明专利
    • Network system, addressing method, communication controller and its method
    • 网络系统,寻址方法,通信控制器及其方法
    • JP2003069589A
    • 2003-03-07
    • JP2001256851
    • 2001-08-27
    • Sony Corpソニー株式会社
    • KIMURA NORIHIKOSHINO KUNINORIKURE YOSHINOBU
    • H04L12/44H04L12/24
    • H04L41/12
    • PROBLEM TO BE SOLVED: To suggest a network system, an addressing method, communication controller and its method with simple configurations having no effect onto network nodes associated with the increase and decrease of nodes.
      SOLUTION: For each node, the first storage means to store the first information indicating all the node identifiers used within a network and the second storage means to store the second information indicating node identifiers of all the nodes connected directly or indirectly to the relevant port for each port are provided so that when a new node is connected to the network, a predetermined primary node grants a node identifier to the new node and supplies the associated predetermined notification to other needed nodes, and that when a node is separated from the network, a predetermined secondary node remaining in the network supplies the associated predetermined notification to other nodes.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提出网络系统,寻址方法,通信控制器及其方法,其简单配置对与节点增加和减少相关联的网络节点没有影响。 解决方案:对于每个节点,第一存储装置存储指示在网络中使用的所有节点标识符的第一信息,第二存储装置存储指示直接或间接连接到相关端口的所有节点的节点标识符的第二信息, 提供每个端口,使得当新节点连接到网络时,预定的主节点向新节点授予节点标识符,并将相关联的预定通知提供给其他所需节点,并且当节点与网络分离时, 网络中剩余的预定次要节点将相关联的预定通知提供给其他节点。
    • 4. 发明专利
    • OPTICAL DISK DEVICE
    • JP2000067458A
    • 2000-03-03
    • JP23693098
    • 1998-08-24
    • SONY CORP
    • HORIE KAZUYOSHISHINO KUNINORIKUBOTA SHIGEO
    • G11B7/085G11B7/135G11B7/1362G11B7/1365G11B7/1384G11B11/105
    • PROBLEM TO BE SOLVED: To enable an optical disk device to deal with high density and large capacity ROM type and RAM type disks by forming an objective lens forming a light spot on an optical disk and an optical path guiding an emission beam from a light source to the objective lens out of a polarization plane maintaining optical fiber, arranging wavelength plates in the optical paths of both sides holding the fiber between them, light-receiving a reflection beam from the optical disk and photoelectrically converting it. SOLUTION: An emission beam from a semiconductor laser 1a is a linearly polarized light, and though the beam is tilted by 45 deg. with respect to the (x) axis of a polarization plane maintaining optical fiber 13 to be propagated through the polarization plane maintaining optical fiber 13, the beam becomes elliptic or circular polarization by double refraction while being propagated. This beam is made incident on a 1/4 wavelength plate 12 where an advanced phase axis is tilted by 45 deg. to be returned to the linear polarization. The polarization of the reflection beam from a magneto-optical disk 8 is made incident on the 1/4 wavelength plate 12 and is made incident again on the polarization plane maintaining optical fiber 13 and the beam propagated through the polarization plane maintaining optical fiber 13 is reflected by a beam splitter 6 to be made incident on a 1/4 wavelength plate 11 where the advanced phase axis is tilted by 45 deg. with respect to the (x) axis.
    • 7. 发明专利
    • MAGNETO-OPTICAL DISK RECORDING METHOD
    • JPH0485739A
    • 1992-03-18
    • JP19924690
    • 1990-07-30
    • SONY CORP
    • TOYODA KIYOSHISHINO KUNINORITSUKAMURA YOSHIHIRO
    • G11B11/10G11B11/105
    • PURPOSE:To evade an adverse effect due to unerased information remained by making a size of a data recording unit to be magnetized in the same direction as the initialization direction larger than a size of a data recording unit to be magnetized in the reverse direction to the initialization direction of magnetization of a recording medium layer. CONSTITUTION:The magnetization direction of the recording medium layer of the magneto-optical disk at the time of initializing the disk is shown as '0' and directed downward, and the direction of magnetization around a recording area after forming a magnetization pattern is left as this initialization magnetizing direction. When a pit of data '0' is recorded to be formed in overlapping with a part formed previously with a pit of data '1', because of the larger size of the pit of data '0', the pit of data '1' should never remain unerased. On the contrary, when the pit of data '1' is recorded to be formed in overlapping with a part formed previously with the pit of data '0', even when unerased parts remain, because of the same magnetization direction as the surroundings, no adverse effect due to unerased remaining parts at the time of reproducing take place at all.
    • 8. 发明专利
    • OPTICAL CARD RECORDING AND REPRODUCING DEVICE
    • JPS6391866A
    • 1988-04-22
    • JP23650086
    • 1986-10-03
    • SONY CORP
    • SHINO KUNINORIOKI YUTAKA
    • G11B19/00G11B7/0033G11B17/34G11B19/20G11B20/00
    • PURPOSE:To write correct information by moving a card holding part in 1st and 2nd directions from a reference position according to a preset movement state and forming a recording track group in a specific state by making an optical beam incident on the optical card arranged at the card loading position. CONSTITUTION:When a sliding member 12 is moved by the actuation of motors 14, 24 and a card holding member 17 reaches the reference position in X and Y direction for a stationary member 11, the motors 14 and 24 are attained in non-working state by the detection output signal from optical detection switches 31, 33. The respective motor 14 and 24 are rotated according to the pulse in specific numbers and when the holding member 17 takes the position for attaching and detaching the card by moving in X and Y directions by the specific distance or reference position, the optical card 18 is inserted into a card loading part 17A. The card holding member 17 is in succession moved with the rotation of the respective motor 14 and 24 by the pulse number selected according to the position designating data, and the recording track of the sector in the designated row and line is formed by the laser beam incident through an objective lens 39 on the optical card 18.
    • 9. 发明专利
    • OPTICAL RECORDING CARD
    • JPS61202380A
    • 1986-09-08
    • JP4092385
    • 1985-03-01
    • SONY CORP
    • SHINO KUNINORI
    • G06K19/10G06K19/06G11B7/00G11B7/0033G11B20/12G11B20/18
    • PURPOSE:To improve an error detection/correction function for the information having high importance such as the ID data, etc., by improving the error detection/correction function of the 2nd information recording part higher than that of the 1st information recording part. CONSTITUTION:The data processed with the error detection/correction coding process having the double error correcting function to 4 words among the data of 24 words are recorded to the 1st information recording part 3 consisting of plural information blocks 3A-3N. While the data processed with the error detection/correction coding process having the triple error correcting function to 6 words among 24 words of a track are recorded to the 2nd information recording part 4. Thus the error detection/correction function of the part 4 where the information of high importance like the TOC data, ID data, etc. are recorded is set higher than that of the part 3. As a result, the possibility is improved for correction and restoration of the record contents of the part 4 despite the generation of a burst error, etc. This improves the reliability of an optical record card.