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    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range
    2.
    发明公开
    Wide-screen television receiver with aspect ratio conversion function and method of displaying a magnified range 失效
    宽屏幕电视接收机的宽高比转换功能和用于显示放大部分方法。

    公开(公告)号：EP0514819A2

    公开(公告)日：1992-11-25

    申请号：EP92108375.4

    申请日：1992-05-18

    申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

    发明人： Takata, Haruki ,  Katsumata, Kenji ,  Hirahata, Shigeru ,  Konno, Mituo ,  Ishibashi, Kouichi ,  Suzuki, Sunao

    IPC分类号： H04N5/44

    CPC分类号： G06T3/4007 ,  H04N7/0122

    摘要： A wide-screen television receiver capable of converting a TV signal of a non-aspect ratio into a signal of a wide aspect ratio which can be displayed on a wide screen of the wide aspect ratio and previously visually informing the user of what part of the image of the non-aspect ratio TV signal is converted in its aspect ratio and displayed on the wide screen. The receiver includes the interpolation scan speed conversion circuit (102), the mode setting circuit (104), the aspect ratio converting circuit (103), the wide cursor adding circuit 105 and the wide display (106). The interpolation scan speed conversion circuit (102) makes a series of processes such as Y/C separation and scan line interpolation for the input video signal supplied via the input terminal (101). The aspect ratio converting circuit (103) compresses the video signal from the interpolation scan speed conversion circuit (102) in the horizontal direction by use of a memory. The magnification processing circuit (109) is provided after the aspect ratio converting circuit (103). This magnification processing circuit (109) magnifies the horizontally compressed video signal so that an arbitrary part of image specified by the mode setting circuit (104) can be magnified at given magnification powers in the horizontal and vertical directions. The wide screen display (106) displays the magnified image of the video signal without horizontal and vertical distortions on the wide screen.

    摘要翻译： 宽屏幕电视接收机能够在非宽高比的电视信号转换成宽的宽高比的一个信号，它可以在宽的宽高比的宽屏幕画面上显示与先前在视觉告知的哪一部分的所述用户的 非宽高比电视信号的图像被转换在其纵横比和显示在宽屏幕上。 该接收机包括内插扫描速度变换电路（102），所述模式设置电路（104），纵横比变换电路（103），宽光标加法电路105和宽显示（106）。 内插扫描速度变换电路（102），使一系列的处理：诸如Y / C分离和扫描线内插用于经由所述输入端（101）提供的输入视频信号。 纵横比变换电路（103），压缩从在通过使用存储器的水平方向的内插的扫描速度变换电路（102）的视频信号。 放大处理电路（109）的纵横比变换电路（103）之后提供。 这种放大处理电路（109）放大了水平方向压缩的视频信号也一样，在可以在水平和垂直方向上给定的放大率功率被放大由模式设置电路（104）中指定的图像的任意部分。 宽屏幕显示器（106）显示的视频信号的放大的图像，而不在宽屏幕上水平和垂直失真。

    Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
    7.
    发明公开
    Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same 审中-公开
    用于执行该方法用于数据加密/Entschlüsselungsumwaldlung和设备和数据通信系统中的方法

    公开(公告)号：EP0896452A2

    公开(公告)日：1999-02-10

    申请号：EP98114719.2

    申请日：1998-08-05

    申请人： Hitachi, Ltd.

    发明人： Aikawa, Makoto ,  Takaragi, Kazuo ,  Koreeda, Hiroyuki ,  Sasamoto, Manabu ,  Okamoto, Hiroo ,  Noguchi, Takaharu ,  Furuya, Soichi ,  Hirahata, Shigeru

    IPC分类号： H04L9/06

    CPC分类号： H04L9/0625 ,  G10H2230/015 ,  H04L2209/08 ,  H04L2209/12 ,  H04L2209/601

    摘要： Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means (201, 202, 203) for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means (606) for selecting fixed cyclic shift processing means (201, 202, 203). The selecting sequence determined by the cyclic shift processing means is determined on the basis of data (G1, G2, G3) for determining the shift number selecting sequence.

    摘要翻译： 加密/解密转换方法和能够控制动态循环移位的独立数据的装置经过加密/解密转换包括用于通过向左固定位数循环移位数据的两个或更多个不同的固定的循环移位处理装置（201，202，203） 或向右，循环移位处理选择装置（606），用于选择固定循环移位处理装置（201，202，203）。 序列选择由循环移位处理装置确定性开采是确定性的所挖掘的数据的基础上（G1，G2，G3），用于确定性采矿移位数目选择序列上。

    Television receiver capable of enlarging and compressing image
    10.
    发明公开
    Television receiver capable of enlarging and compressing image 失效
    电视能够和拍照的变焦。

    公开(公告)号：EP0630154A2

    公开(公告)日：1994-12-21

    申请号：EP94109332.0

    申请日：1994-06-16

    申请人： HITACHI, LTD.

    发明人： Katsumata, Kenji ,  Hirahata, Shigeru ,  Murata, Toshinori ,  Takata, Haruki ,  Torikoshi, Shinobu ,  Eda, Takanori ,  Ishibashi, Kouichi

    IPC分类号： H04N5/44

    CPC分类号： H04N7/0122 ,  H04N3/27

    摘要： To provide an image which is matched with an aspect ratio of a screen of a display unit by compressing and enlarging the whole of the image to a desired size. A video signal is sequentially written into a field memory in response to a write clock from an input terminal (118). A clock generating circuit (119) supplies the field memory (103) with a read clock having a frequency which is about 4/3 times as high as that of the write clock. A vertical enlargement control circuit (110) reads a video signal from the field memory (103) with a line period corresponding to a magnification factor and inhibits writing to a one-line memory (105) with the same period to provide a line delayed output for an output signal from the field memory (13). A vertical interpolating circuit (106) generates a scanning line signal by an interpolation operation in accordance with a control signal from the vertical enlargement control circuit (110).