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    • 62. 发明公开
    • 홀로그래픽 저장 매체에의 데이터 기록 장치 및 방법
    • 在全息存储介质上记录数据的装置和方法
    • KR1020080078252A
    • 2008-08-27
    • KR1020070018091
    • 2007-02-22
    • 삼성전자주식회사
    • 정문일최종철정택성
    • G11B7/0065G11B7/004G11B7/0045
    • G11B7/0065G03H1/26G03H1/265G03H2001/0224G11B7/083G11B7/128
    • An apparatus and a method for recording data on a holographic storage medium are provided to form selectivity difference among the parts of an SLM(Spatial Light Modulator) surface by forming the tangential side of the SLM surface longer than the radial direction along which the reference light is scanned, thereby reducing the recording gap. A holographic recording and reproducing device comprises an optical processing part(510) in which a holographic storage medium(100) is inserted, a control part(520) for controlling the optical processing part to record data in the holographic storage medium or reproducing the data from the medium, and a memory(530) for storing the data to be recorded in the holographic storage medium temporarily. The optical processing part includes a laser light source(511), a beam splitter(512), a first reflection mirror(513), a spatial light modulator(514), a first lens(515), a second reflection mirror(516), a second lens(517), a third lens(518), and a detection part(519). The control part controls the optical processing part, generates a data page, and processes a signal reproduced from the optical processing part. The signal light is projected to the spatial light modulator. The signal light is modulated. The modulated signal light is focused on the holographic storage medium by the first lens. The reference light is reflected from the second reflection mirror. The tangential direction is longer than the radial direction in which the reference light is scanned on an SLM(Spatial Light Modulator) surface.
    • 提供用于在全息存储介质上记录数据的装置和方法,以通过形成SLM表面的切向侧比径向方向更长于SLM(空间光调制器)表面的部分之间的选择性差异, 被扫描,从而减少记录间隙。 全息记录和再现装置包括一个其中插入了全息存储介质(100)的光学处理部分(510),用于控制光学处理部分以在全息存储介质中记录数据或再现数据的控制部分(520) 以及用于临时存储要记录在全息存储介质中的数据的存储器(530)。 光学处理部分包括激光源(511),分束器(512),第一反射镜(513),空间光调制器(514),第一透镜(515),第二反射镜(516) ,第二透镜(517),第三透镜​​(518)和检测部(519)。 控制部分控制光学处理部分,产生数据页面,并处理从光学处理部件再现的信号。 信号光投射到空间光调制器。 信号光被调制。 调制信号光通过第一透镜聚焦在全息存储介质上。 参考光从第二反射镜反射。 切向方向长于在SLM(空间光调制器)表面上扫描参考光的径向方向。
    • 64. 发明公开
    • 홀로그램 기록 장치
    • HOLOGRAM记录装置
    • KR1020080051183A
    • 2008-06-10
    • KR1020087009553
    • 2006-06-30
    • 후지쯔 가부시끼가이샤
    • 요시까와,히로야스데즈까,고이찌우노,가즈시이와무라,야스마사야마까게,유즈루
    • G11B7/0065G03H1/12G02B26/06G02B26/08
    • G03H1/12G03H1/02G03H2001/0224G03H2001/2675G03H2223/13G03H2225/31G03H2225/55G11B7/0065G11B7/128G11B7/1362
    • A hologram recording device records hologram in a hologram recording medium by splitting a coherent beam outputted from a beam source into a signal beam and a reference beam, irradiating the hologram recording medium with the signal beam by modulating the signal beam by a spatial light modulator, and by irradiating the hologram recording medium with the other reference beam to have the reference beam overlap the signal beam. The hologram recording device is provided with a plurality of optical elements (20p, 20p') which can be in two statuses, i.e., in on-mode wherein the reference beam is transmitted or reflected in a prescribed direction toward the hologram recording medium, and in off-mode where the reference beam is guided outside the prescribed direction or blocked. Each of the optical elements (20p, 20p') is provided with an optical phase modulating means which generates prescribed phase differences (0, '), and a phase modulation control means which controls each of the optical elements (20p, 20p') to be in the on-mode or off-mode and modulates the reference beam to a beam having a prescribed phase pattern.
    • 全息记录装置通过将从光束源输出的相干光束分割为信号光束和参考光束将全息图记录在全息记录介质中,通过空间光调制器调制信号光束照射信号光束,照射全息图记录介质, 并且通过用全息图记录介质照射另一个参考光束以使参考光束与信号光束重叠。 全息记录装置设置有多个可以处于两种状态的光学元件(20p,20p'),即在参考光束以规定方向朝向全息图记录介质传播或反射的模式中,以及 在参考光束被引导到规定方向外或被阻挡的非模式中。 每个光学元件(20p,20p')设置有产生规定相位差(0'')的光学相位调制装置,以及将每个光学元件(20p,20p')控制到的相位调制控制装置 处于导通模式或截止模式,并将参考光束调制到具有规定相位图案的光束。
    • 69. 发明公开
    • 홀로그래픽 메모리 시스템에서 복소 위상 코드를 이용한 위상 코드 다중화 방법 및 장치
    • 相位代码使用复合相位代码在全息记忆系统中的复用方法
    • KR1020020028164A
    • 2002-04-16
    • KR1020020000562
    • 2002-01-05
    • (주)맥스소프트김은수
    • 김은수
    • G02B26/00
    • G11B7/128G03H1/12G03H2001/2675G11B7/0065
    • PURPOSE: A phase code multiplexing method using a complex phase code in a holographic memory system is provided to calculate a complex phase code using a complex phase code algorithm. CONSTITUTION: After establishing a complex phase code(310), there is established a block size of each of elemental complex phase code pairs(315). Ordinate coordinates of the complex phase code is established by y=y+1(320) and plane coordinate are established by x=x+1(325), so that the elemental complex phase code pair and a counter part-elemental complex phase code are generated(330). There is judged whether a real number and an imaginary number are independent on the basis of a vector constituent element of each of the elemental complex phase code pair and the counter part-elemental complex phase code(335). If so, there is judged whether the scalar product of the elemental complex phase code pair and the counter part-elemental complex phase code is "0"(340). If the scalar product of the elemental complex phase code pair and the counter part-elemental complex phase code is "0", there is judged whether RCE(x)(y) stored in a buffer is "1"(345). If so, the elemental complex phase code pair is mapped on CPC(x)(y)(350). If not, the counter part-elemental complex phase code is mapped on CPC(x)(y)(355). There is judged whether plane coordinate of the complex phase code are n(360). If so, there is judged whether ordinate coordinates are n(365). If so, there is filled up a phase code suitable for the size of the complex phase code established in the 310 step.
    • 目的:提供一种在全息存储系统中使用复相位码的相位码复用方法,以使用复相位码算法来计算复相位码。 构成:在建立复相位代码(310)之后,建立每个元素复相位码对的块大小(315)。 通过y = y + 1(320)建立复相位码的坐标坐标,并且通过x = x + 1(325)建立平面坐标,使得元素复相位码对和相对部分元素复相位码 (330)。 基于每个元素复相位码对和相对部分基本复相位码(335)的矢量构成要素,判断实数和虚数是否独立。 如果是,则判断元素复相位代码对和计数器部分复合相位代码的标量积是否为“0”(340)。 如果元素复相位码对和计数器部分复合相位码的标量积为“0”,则判断存储在缓冲器中的RCE(x)(y)是否为“1”(345)。 如果是,则基本复合相位码映射在CPC(x)(y)(350)上。 如果不是,则计数器部分复合相位代码映射在CPC(x)(y)(355)上。 判断复相位码的平面坐标为n(360)。 如果是,则判断纵坐标是n(365)。 如果是这样,则填写适用于在310步骤中建立的复相位代码的大小的相位代码。