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22 条记录 (耗时 0.015 秒)

    Television receiver capable of enlarging and compressing image
    13.
    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).

    Digital broadcast transmitting and receiving system and transmitting and receiving apparatus thereof
    17.
    发明公开
    Digital broadcast transmitting and receiving system and transmitting and receiving apparatus thereof 失效
    数字无线电接收和-sendesystem和发射器和接收器，以

    公开(公告)号：EP0762765A3

    公开(公告)日：1999-06-16

    申请号：EP96306376.3

    申请日：1996-09-03

    申请人： HITACHI, LTD.

    发明人： Bando, Yumi ,  Murata, Toshinori ,  Okamura, Takumi ,  Katsumata, Kenji ,  Nanki, Masaru ,  Eda, Takanori ,  Imuro, Satoshi ,  Takashimizu, Satoru

    IPC分类号： H04N7/167

    CPC分类号： H04N7/1675 ,  H04N5/913 ,  H04N21/2347 ,  H04N21/2541 ,  H04N21/26606 ,  H04N21/4405 ,  H04N2005/91328 ,  H04N2005/91364

    摘要： An arrangement to automatically change between a scrambled digital data output and descrambled digital data output of a receiver by inserting a control signal conforming to a program provider's policy into a transmission signal. In a receiving side, a descrambler descrambles a channel-decoded signal, a demultiplexer demultiplexes the multiplexed signal from the descrambler into encoded video and audio data for output to a source decoder, and extracts the control information inserted in the transmitting side for output to a switch or CPU. The CPU decrypts a control signal from the control information extracted by the demultiplexer to determine whether the scrambled digital signal or descrambled digital signal is appropriate for output, and outputs a changeover control signal depending on the result of decryption. A switch selects the output of a scrambled digital signal from a stage prior to the descrambler, or a descrambled digital signal from a stage subsequent to the descrambler, depending on the changeover control signal from the CPU. Thereby, a scrambled digital signal output or descrambled digital signal output can automatically be changed over depending on a program provider's policy.

    Television receiver capable of enlarging and compressing image
    20.
    发明公开
    Television receiver capable of enlarging and compressing image 失效
    FernsehgerätfähigzumVergrössernund Verkleinern des Bildes。

    公开(公告)号：EP0630154A3

    公开(公告)日：1995-04-12

    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).

    摘要翻译： 通过将整个图像压缩并放大到期望的大小来提供与显示单元的屏幕的纵横比匹配的图像。 响应于来自输入端子（118）的写时钟，视频信号被顺序地写入场存储器。 时钟发生电路（119）向场存储器（103）提供具有与写入时钟的频率约高4/3倍的频率的读时钟。 垂直放大控制电路（110）以与放大率对应的行周期从场存储器（103）读取视频信号，并禁止以相同周期向单行存储器（105）写入以提供行延迟输出 用于来自场存储器（13）的输出信号。 垂直内插电路（106）根据来自垂直放大控制电路（110）的控制信号，通过内插运算产生扫描线信号。