Serial bus clock frequency calibration system and method thereof
    1.
    发明授权
    Serial bus clock frequency calibration system and method thereof 有权
    串行总线时钟频率校准系统及其方法

    公开(公告)号:US08140882B2

    公开(公告)日:2012-03-20

    申请号:US12388373

    申请日:2009-02-18

    IPC分类号: H03D3/24

    摘要: A serial bus clock frequency calibration system and a method thereof are disclosed herein. The system utilizes a first frequency calibration device and a second frequency calibration device both to share an oscillator as so to perform two-stage clock frequency resolution calibrations for generating different frequency-tuning ranges. This can bring an optimal frequency resolution and greatly reduce system complexity and save element cost.

    摘要翻译: 本文公开了串行总线时钟频率校准系统及其方法。 该系统利用第一频率校准装置和第二频率校准装置来共享振荡器,以便执行用于产生不同频率调谐范围的两级时钟频率分辨率校准。 这可以带来最佳的频率分辨率,并大大降低系统复杂性并节省元件成本。

    SERIAL BUS CLOCK FREQUENCY CALIBRATION SYSTEM AND METHOD THEREOF
    2.
    发明申请
    SERIAL BUS CLOCK FREQUENCY CALIBRATION SYSTEM AND METHOD THEREOF 有权
    串行时钟频率校准系统及其方法

    公开(公告)号:US20100122106A1

    公开(公告)日:2010-05-13

    申请号:US12388373

    申请日:2009-02-18

    IPC分类号: G06F1/00 G01R23/00

    摘要: A serial bus clock frequency calibration system and a method thereof are disclosed herein. The system utilizes a first frequency calibration device and a second frequency calibration device both to share an oscillator as so to perform two-stage clock frequency resolution calibrations for generating different frequency-tuning ranges. This can bring an optimal frequency resolution and greatly reduce system complexity and save element cost.

    摘要翻译: 本文公开了串行总线时钟频率校准系统及其方法。 该系统利用第一频率校准装置和第二频率校准装置来共享振荡器,以便执行用于产生不同频率调谐范围的两级时钟频率分辨率校准。 这可以带来最佳的频率分辨率,并大大降低系统复杂性并节省元件成本。

    Multimedia overlay system for graphics and video
    3.
    发明授权
    Multimedia overlay system for graphics and video 失效
    用于图形和视频的多媒体覆盖系统

    公开(公告)号:US5696527A

    公开(公告)日:1997-12-09

    申请号:US354187

    申请日:1994-12-12

    摘要: In the preferred embodiment, the RGB analog signals generated by a VGA card in a personal computer are applied to a first input of an analog multiplexer. The digital video data stored in a video memory buffer on a video card is converted to RGB analog signals using a D/A converter, and these analog signals are applied to a second input of the analog multiplexer. An analog comparator compares a preselected color key to the analog output of the VGA card. When there is a match, the analog comparator controls the multiplexer to pass the analog video data to the monitor for display. When the color key is not detected, the data from the VGA card is transmitted to the monitor for display. Other features for improving the video overlay precision and the quality of the displayed image are also described.

    摘要翻译: 在优选实施例中,由个人计算机中的VGA卡产生的RGB模拟信号被施加到模拟多路复用器的第一输入端。 存储在视频卡上的视频存储器缓冲器中的数字视频数据使用D / A转换器转换成RGB模拟信号,并将这些模拟信号加到模拟多路复用器的第二输入端。 模拟比较器将预选色键与VGA卡的模拟输出进行比较。 当有匹配时,模拟比较器控制多路复用器将模拟视频数据传送到监视器进行显示。 当未检测到颜色键时,来自VGA卡的数据被传送到监视器进行显示。 还描述了用于提高视频重叠精度和显示图像的质量的其他特征。