中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.01 seconds)

    Three-dimensional optical read-only memory
    2.
    发明授权
    Three-dimensional optical read-only memory 失效
    三维光学只读存储器

    公开(公告)号：US3643233A

    公开(公告)日：1972-02-15

    申请号：US3643233D

    申请日：1969-01-15

    Applicant: IBM

    Inventor： FAN GEORGE J ,  GREINER JAMES H

    IPC: G11C13/04 ,  G11C11/22 ,  G11C11/42

    CPC classification number: G11C13/04

    Abstract: A three-dimensional optical read-only memory is composed of a stack of transparent plates composed of either ferroelectric or ferromagnetic materials wherein binary information is stored as domains in each plate. The stack of plates containing the domains allows a polarized source of light to traverse the stack and appear, to a detecting device, as a homogeneous source. When an electromagnetic field is applied across a single plate in the stack, the polarization of the domains in that plate is rotated, creating a birefringence in the material. The polarized source of light is now modulated by such particularly selected plate according to this particular bit pattern of domains. This pattern can be imaged onto an array of detectors. When the electromagnetic field is removed, the disturbed domains return to their original storage states so that the polarized interrogating light reappears as a homogeneous source to all detectors.

    Abstract translation: 三维光学只读存储器由由铁电体或铁磁材料构成的透明板堆叠组成，其中二进制信息作为域存储在每个板中。 含有这些结构域的一叠板允许偏振光源穿过堆叠并出现在检测装置上作为均质源。 当电磁场施加在堆叠中的单个板上时，该板中的畴的极化被旋转，在材料中产生双折射。 偏振光源现在由这种特别选择的平板根据这种特定的位图案来调制。 该图案可以成像到检测器阵列上。 当去除电磁场时，受干扰的域返回其原始存储状态，使得偏振询问光作为均匀源重新出现到所有检测器。

    Method an apparatus for asynchronously forming magnetic liquid droplets
    3.
    发明授权
    Method an apparatus for asynchronously forming magnetic liquid droplets 失效
    方法用于异步形成磁性液滴的装置

    公开(公告)号：US3916419A

    公开(公告)日：1975-10-28

    申请号：US44655974

    申请日：1974-02-27

    Applicant: IBM

    Inventor： FAN GEORGE J ,  TOUPIN RICHARD A

    IPC: B41J2/06 ,  H04N1/034 ,  G01D15/16

    CPC classification number: B41J2/06

    Abstract: Droplets of a magnetic liquid are pulled from an outlet or orifice of a nozzle by applying a magnetic force to the magnetic liquid, which is under a relatively low static pressure, within the nozzle whereby the droplets, which are ink, impinge upon a recording surface. Each droplet is pulled from the outlet of the nozzle by applying a magnetic force adjacent the outlet, a magnetic force from the opposite side of the recording surface from the nozzle outlet, or magnetic forces from both sides of the recording surface.

    Abstract translation: 通过对位于喷嘴内的相对低的静压下的磁性液体施加磁力，从喷嘴的出口或孔口拉出磁性液体的液滴，由此油墨中的液滴撞击在记录表面上 。 通过施加邻近出口的磁力，来自喷嘴出口的记录表面的相对侧的磁力或来自记录表面两侧的磁力，将每个液滴从喷嘴的出口拉出。

    Thin-film magnetic recording head
    8.
    发明授权
    Thin-film magnetic recording head 失效
    薄膜磁记录头

    公开(公告)号：US3626396A

    公开(公告)日：1971-12-07

    申请号：US3626396D

    申请日：1968-10-03

    Applicant: IBM

    Inventor： EASTMAN DEAN E ,  FAN GEORGE J

    IPC: G11B5/193 ,  G11B5/31 ,  G11B5/33 ,  G11B5/16 ,  G11B5/20

    CPC classification number: G11B5/31 ,  G11B5/193 ,  G11B5/332

    Abstract: A magnetic recording head is composed of a substantially Ushaped member made of very thin, highly permeable, ferrite pole pieces. The front gap of the head is of the order of 0.1 mil in width and the magnetic path of the head is closed at the back sides of the pole pieces with a magnetic permalloy film having square loop or nonlinear switching characteristics. The use of the square loop film together with high-permeability pole pieces permits a small magnetic field from a tape or disc to switch a large amount of flux in the permalloy film. Such flux reversal can be sensed with a single turn film of metal.

Patent Agency Ranking