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    • 9. 发明授权
    • Increasing image field of view and frame rate in an imaging apparatus
    • 在成像设备中增加图像视场和帧速率
    • US06512541B2
    • 2003-01-28
    • US08986754
    • 1997-12-08
    • Randy R. DuntonLawrence A. Booth, Jr.
    • Randy R. DuntonLawrence A. Booth, Jr.
    • H04N5235
    • H04N5/2259H04N7/188
    • An imaging apparatus that is configurable to operate in at least two modes. One mode is particularly suitable for still image capture, whereas the second mode is suitable for video image capture and other rapid frame rate applications. The image data in the second mode is smaller (lower resolution) than the image data obtained in the first mode. The reduction is accomplished by either digital scaling, cropping, or by a combination of optical scaling and selective readout of sensor signals. The simple digital scaling provides a fixed angular field of view for both modes of operation, while cropping alone gives a smaller field of view. Using the combination of optical scaling and selective sensor signal readout, however, provides a wider field of view for the second mode of operation while at the same time providing lower resolution images, thus improving frame rate in the second mode of operation. The embodiments can be used in a wide range of imaging applications, including digital cameras used for both still image capture and video.
    • 一种可配置为以至少两种模式操作的成像装置。 一种模式特别适用于静态图像捕获,而第二种模式适用于视频图像捕获和其他快速帧速率应用。 第二模式中的图像数据比在第一模式中获得的图像数据更小(更低的分辨率)。 减少是通过数字缩放,裁剪或光学缩放和传感器信号的选择性读出的组合来实现的。 简单的数字缩放为两种操作模式提供了固定的角度视场,而单独裁剪则具有较小的视野。 然而,使用光学缩放和选择性传感器信号读出的组合为第二操作模式提供了更宽的视场,同时提供较低分辨率的图像,从而提高了第二操作模式中的帧速率。 这些实施例可以用于广泛的成像应用,包括用于静止图像捕获和视频的数码相机。