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    MICRO ACTUATOR
    11.
    发明专利
    MICRO ACTUATOR 失效

    公开(公告)号：JPH06246231A

    公开(公告)日：1994-09-06

    申请号：JP2875093

    申请日：1993-02-18

    Applicant: IBM

    Inventor： HIRANO TOSHIKI ,  FURUHATA TOMOTAKE

    IPC: B06B1/06 ,  B81B3/00 ,  H01L41/09

    Abstract: PURPOSE: To provide a microactuator suitable for a piezoelectric film by providing the microactuator with a first voltage pattern of a sawtooth waveform between electrode pairs on one side of a wall-like member and a second voltage pattern inverted in polarity between the electrode pairs on the other side. CONSTITUTION: A downwardly facing electric field is generated between the electrode pairs 3a and 4 and an upwardly facing electric field is generated between the electrode pairs 3b and 4 and the magnitude thereof increases gradually during the time from the time 0 to t1. Then, a PZT film 1 held between the electrode pairs 3a and 4 elongates gradually and a PZT film 1 held between the electrode pairs 3b and 4 shrinks gradually. Consequently, the wall-like member 2 moves rightward. The direction of the electric field inverts at the time t1 and the PZT film 1 between the electrode pairs 3a and 4 shrinks rapidly and the PZT film 1 between the electrode pairs 3b and 4 elongates rapidly. The wall-like member 2 rapidly moves leftward. An object 8 existing above the wall-like member 2 is moved rightward by repeating such operations.

    Clustering
    14.
    发明专利
    Clustering 未知

    公开(公告)号：GB2355089A

    公开(公告)日：2001-04-11

    申请号：GB0015029

    申请日：2000-06-21

    Applicant: IBM

    Inventor： INOUE KEISUKE ,  ITOH TAKAYUKI ,  YAMADA ATSUSHI ,  FURUHATA TOMOTAKE

    IPC: G06F17/50 ,  G06T15/00 ,  G06T17/20 ,  G06T19/00

    Abstract: To automatically, in accordance with the intent of a designer, divide multiple faces constituting a three-dimensional object into one or more areas, a clustering unit 32 accepts a shape model that expresses constituent faces for a three-dimensional shape, and restrictive condition data that designate which of these faces must be sorted into the same (or a different) cluster. The clustering unit 32 selects, from the shape model, faces that must be included in the same cluster and combines them to form an initial cluster. In accordance with the restrictive condition, the clustering unit 32 sequentially forms clusters for which the directions of normal lines do not differ greatly, and that provide a smooth frame line after the clusters have been combined. As the final result of the processing, clusters are output that ensure an area equal to or greater than an appropriate area.

    Area division apparatus and method
    16.
    发明专利
    Area division apparatus and method 未知

    公开(公告)号：GB2355634A

    公开(公告)日：2001-04-25

    申请号：GB0014811

    申请日：2000-06-19

    Applicant: IBM

    Inventor： YAMADA ATSUSHI ,  FURUHATA TOMOTAKE ,  ITOH TAKAYUKI

    IPC: G06T17/30 ,  G06F17/50 ,  G06T15/00 ,  G06T17/20

    Abstract: The invention relates to an area division apparatus for dividing a target area in a two- or higher-dimensional shape into a plurality of predetermined polygonal areas. The apparatus comprises a frame area division means for dividing a portion (a frame area) of the target area adjacent to a boundary (a frame line) between the target area and an area other than said target area into a plurality of said polygonal areas so that any one of points on the frame line is included in one or more of the polygonal areas according to a predetermined rule. The apparatus also comprises an undivided area division means for dividing an undivided area in the target area not yet divided into a plurality of the polygonal areas into one or more of the polygonal areas.

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