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    Television receiver capable of enlarging and compressing image
    8.
    发明授权
    Television receiver capable of enlarging and compressing image 失效
    能够扩大和压缩图像的电视接收机

    公开(公告)号：US5534934A

    公开(公告)日：1996-07-09

    申请号：US260576

    申请日：1994-06-16

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

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

    IPC分类号： H04N5/262 ,  H04N3/27 ,  H04N5/46 ,  H04N7/01

    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. A clock generating circuit supplies the field memory 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 reads a video signal from the field memory with a line period corresponding to a magnification factor and inhibits writing to a one-line memory with the same period to provide a line delayed output for an output signal from the field memory. A vertical interpolating circuit generates a scanning line signal by an interpolation operation in accordance with a control signal from the vertical enlargement control circuit.

    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。 响应于来自输入端的写时钟，视频信号被顺序地写入场存储器。 时钟产生电路为场存储器提供具有与写入时钟的频率约4/3倍的频率的读时钟。 垂直放大控制电路以与放大倍率对应的行周期从场存储器读取视频信号，并禁止以相同周期对单行存储器进行写入，以提供来自场存储器的输出信号的行延迟输出。 垂直内插电路根据来自垂直放大控制电路的控制信号通过内插操作产生扫描线信号。

    Video signal processing circuit capable of enlarging and displaying a picture
    10.
    发明授权
    Video signal processing circuit capable of enlarging and displaying a picture 失效
    视频信号处理电路能够放大和显示图像

    公开(公告)号：US5181110A

    公开(公告)日：1993-01-19

    申请号：US634518

    申请日：1990-12-27

    申请人： Kenji Katsumata ,  Shigeru Hirahata ,  Masato Sugiyama ,  Takaaki Matono ,  Kazuo Ishikura ,  Sunao Suzuki ,  Kazuhiro Kaizaki

    发明人： Kenji Katsumata ,  Shigeru Hirahata ,  Masato Sugiyama ,  Takaaki Matono ,  Kazuo Ishikura ,  Sunao Suzuki ,  Kazuhiro Kaizaki

    IPC分类号： G06T3/40 ,  H04N5/262 ,  H04N5/44

    CPC分类号： G06T3/4007 ,  H04N5/262 ,  H04N5/2628 ,  H04N5/44 ,  H04N7/012

    摘要： A video signal processing circuit capable of enlarging and displaying a picture and adapted for use in an apparatus in which a desired picture is selected, and a video signal representative of the desired picture under interlaced scanning is received, stored in a memory and processed to provide an enlarged video signal, includes a real signal/interpolated signal preparation circuit for preparing, from the stored video signal, new scanning lines for an image to be enlarged, and a memory processing circuit having switching control function to store an output signal of the real signal/interpolated signal preparation circuit in a memory, read the video signal out of the memory at a period different from a period at which the output signal is stored in the memory, and delay a read-out signal by one or more fields so that an enlarged signal is delivered.

    摘要翻译： 一种视频信号处理电路，其能够放大并显示图像，并且适于在其中选择期望的图像的装置中使用，并且在隔行扫描中接收表示期望图像的视频信号，存储在存储器中并进行处理以提供 放大的视频信号包括一个实际信号/内插信号准备电路，用于从所存储的视频信号中准备用于要放大的图像的新扫描线，以及具有切换控制功能的存储器处理电路，以存储实际的输出信号 信号/内插信号准备电路在存储器中以与输出信号存储在存储器中的周期不同的周期从存储器读出视频信号，并且通过一个或多个字段延迟读出信号，使得 传送放大的信号。