公开(公告)号：US06323915B1

公开(公告)日：2001-11-27

申请号：US09405722

申请日：1999-09-24

申请人： Thomas Adreon Marflak ,  Hirohide Kiga ,  David Scott Arnold

发明人： Thomas Adreon Marflak ,  Hirohide Kiga ,  David Scott Arnold

IPC分类号： H04N3223

CPC分类号： H04N7/0122 ,  H04N5/57 ,  H04N5/59

摘要： A method and apparatus for displaying a video signal is described. A first video signal is received representing a first image having a first aspect ratio. The first image is displayed on a display having a second aspect ratio and a display area, with the first image having a smaller area than the display area forming a border area. A second video signal is received representing a second image having the second aspect ratio. A border modification signal is generated. The second image is displayed on the display with the border area modified in accordance with the border modification signal.

摘要翻译： 描述用于显示视频信号的方法和装置。 接收表示具有第一宽高比的第一图像的第一视频信号。 第一图像显示在具有第二宽高比和显示区域的显示器上，其中第一图像具有比形成边界区域的显示区域更小的面积。 接收表示具有第二宽高比的第二图像的第二视频信号。 生成边界修改信号。 第二个图像显示在边框修改信号修改边框的显示屏上。

公开(公告)号：US06297859B1

公开(公告)日：2001-10-02

申请号：US09345087

申请日：1999-06-30

申请人： John Barrett George

发明人： John Barrett George

IPC分类号： H04N3223

CPC分类号： H04N9/28 ,  H04N9/31

摘要： A projection display comprises a display device forming an image for projection onto a display screen. A photo sensor is adjacent to the display screen and generates a first signal responsive to a level of the projected image illumination incident on the photo sensor. A detector is coupled to receive the first signal and generates an output signal indicative of detecting the first signal. A source of a predetermined detection threshold value is coupled to the detector for determining a threshold at which the detection of the first signal occurs. Wherein the first signal exceeds the predetermined detection threshold value, the detector detects and generates the output signal indicative of signal detection, and generates a second signal for coupling to the source to change the predetermined detection threshold value.

摘要翻译： 投影显示器包括形成用于投影到显示屏上的图像的显示装置。 光传感器与显示屏相邻，并响应入射在光传感器上的投影图像的亮度的水平产生第一信号。 耦合检测器以接收第一信号并产生指示检测第一信号的输出信号。 预定检测阈值的源耦合到检测器，用于确定发生第一信号的检测的阈值。 在第一信号超过预定检测阈值的情况下，检测器检测并产生指示信号检测的输出信号，并产生用于耦合到源的第二信号以改变预定的检测阈值。