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    VIDEO SIGNAL ENCODING DEVICE
    6.
    发明专利
    VIDEO SIGNAL ENCODING DEVICE 失效

    公开(公告)号：JPH07162870A

    公开(公告)日：1995-06-23

    申请号：JP25162594

    申请日：1994-09-21

    Applicant: AMERICAN TELEPHONE & TELEGRAPH ,  BELL COMMUNICATIONS RES

    Inventor： ATSURU PURI ,  ANDORIA HAHONGU UONGU

    IPC: H04N5/92 ,  G06T1/00 ,  G06T9/00 ,  H04N7/26 ,  H04N7/32 ,  H04N7/50

    Abstract: PURPOSE: To efficiently encode a video signal by combining prediction acquired from one layer and prediction obtained from the other layer and using the combined prediction for encoding two layers. CONSTITUTION: A high resolution video signal VIDIN is inputted through an input line 100 and supplied to a space decimeter 1120. A decimated base layer signal is outputted to a line 1130 and supplied to a base layer encoder A140. The encoder 1140 outputs an encoded bit stream BL to a line 1190. The encoder 1140 supplies a base layer video image to a space interpolator 1160. A decoded base layer video signal VIDOTB is supplied to a space interpolator 1320, which generates an up-sampled signal to a line 1330. An enhancement player decoder 1340 outputs a video signal having higher resolution to an output line 1350.

    SEMICONDUCTOR LIGHT WAVEGUIDE
    9.
    发明专利
    SEMICONDUCTOR LIGHT WAVEGUIDE 失效

    公开(公告)号：JPH03109511A

    公开(公告)日：1991-05-09

    申请号：JP13479589

    申请日：1989-05-30

    Applicant: FUJITSU LTD ,  BELL COMMUNICATIONS RES

    Inventor： MAKIUCHI MASAO ,  ROBAATO JIEI DERI ,  KURAMATA AKITO ,  YASUOKA NAMI

    IPC: G02B6/30 ,  G02B6/12 ,  G02B6/122

    Abstract: PURPOSE: To enable optical coupling to a single mode optical fiber with high efficiency and to reduce the loss in the case where light of a single mode is propagated by alternately laminating barrier layers and well layers consisting of a material which is larger in refractive index than the barrier layers, is lattice-aligned to the barrier layers and is capable of changing the refractive index by selecting the compsn. thereof, thereby constituting quantum wells. CONSTITUTION: This semiconductor optical waveguide has multiple quantum wells 13 constituted by alternately laminating the InP barrier layers 13A and the wafer layers consisting of the material which his lattice-aligned to InP and is capable of changing the refractive index by selecting the compsn. thereof and an InP rear surface side clad layer 12 and InP front surface layer side clad 14 holding the multiple quantum wells 13 from above and below and an InP substrate 11 which supports the respective clad layers and the multiple quantum wells 13. The mesa of the depth arriving at the inside of the InP front surface side clad 14 from the surface is formed or, further, the thickness of the barrier layers or the well layers is changed or the compsn. of the well layers is changed. As a result, the optical coupling with the single mode optical fiber is embodied with high efficiency and the propagation loss of the light is small.

    DYNAMIC VECTOR DETECTING DEVICE
    10.
    发明专利
    DYNAMIC VECTOR DETECTING DEVICE 失效

    公开(公告)号：JPH03106283A

    公开(公告)日：1991-05-02

    申请号：JP24445489

    申请日：1989-09-20

    Applicant: GRAPHICS COMMUNICATION TECH ,  BELL COMMUNICATIONS RES

    Inventor： FUJIWARA HIROSHI ,  MARUYAMA MASANORI ,  JOFU HIROO ,  MIN TEIN SAN ,  KUN MIN YAN

    IPC: F02B39/00 ,  G06T7/20 ,  G06T9/00 ,  G06T13/00 ,  G06T13/80 ,  H04M3/56 ,  H04N11/04

    Abstract: PURPOSE: To efficiently execute the parallel process of an accurate dynamic vector by plural arithmetic means and to search the vector realtime by providing the dynamic vector detecting device with plural registers, plural arithmetic means for computing evaluation data and a dynamic vector data detecting means. CONSTITUTION: Device, (p-1) of registers 61 , 62 input respective pixel data in a 1st block successively from the initial stage to the succeeding stage and delay the data by prescribed time, and p arithmetic means 71 to 73 input respective pixel data in the 1st block or an output from any one of (p-1) registers 61 , 62 and respective pixel data in an intermediate block and operate evaluation data. The dynamic vector detecting means 18 seeks a minimum value and a position which are dynamic vector data by the use of p number of evaluation data, outputted from the p arithmetic means 71 to 73 . Consequently, an accurate dynamic vector is detected, and the parallel processing of the dynamic vector is executed efficiently by plural arithmetic means 71 to 73 .

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