公开(公告)号：US5892521A

公开(公告)日：1999-04-06

申请号：US691267

申请日：1996-08-02

Applicant: Jon Blossom ,  Michael Edwards

Inventor： Jon Blossom ,  Michael Edwards

IPC: G06T15/50 ,  H04N5/45 ,  H04N7/26 ,  H04N9/75 ,  G06F15/00 ,  G06F13/00

CPC classification number: G06T15/503 ,  H04N19/23 ,  G09G2340/125 ,  H04N5/45 ,  H04N9/75 ,  Y10S345/95

Abstract: A data processing apparatus includes a graphics display device for displaying a display frame comprising a plurality of display frame pixels. A sprite management system composes the display frame from a plurality of graphic sprites. Each graphic sprite comprises a plurality of sprite pixels and corresponding sprite pixel values. Each sprite has a specified depth relative to the other sprites. One of the sprites is designated to be a video sprite. This sprite is loaded with a chroma-key value. The sprite management system includes a data processing device connected to access a display frame composition buffer. The data processing device is programmed to write pixel values of individual sprites to the display frame composition buffer. This writing begins with the pixel values of the sprite having the greatest depth and proceeds with the pixel values of the remaining sprites in order of decreasing sprite depth. The display frame data is then passed to a video overlay board which overlays a video image over those pixels containing the chroma-key value. The result is a display frame in which the plurality of graphic sprites, including the video sprite, appear layered with respect to each other in accordance with their respectively specified depths.

Abstract translation: 数据处理装置包括用于显示包括多个显示帧像素的显示帧的图形显示装置。 精灵管理系统从多个图形精灵构成显示框架。 每个图形精灵包括多个子画面像素和相应的精灵像素值。 每个精灵相对于其他精灵具有指定的深度。 其中一个精灵被指定为视频精灵。 此sprite加载了色键值。 子画面管理系统包括连接到访问显示框构成缓冲器的数据处理装置。 数据处理装置被编程为将单个子画面的像素值写入显示帧组合缓冲器。 该写入开始于具有最大深度的子画面的像素值，并且按照减小子画面深度的顺序继续剩余子画面的像素值。 然后将显示帧数据传送到覆盖包含色度键值的像素上的视频图像的视频覆盖板。 结果是显示框，其中包括视频精灵的多个图形精灵根据它们各自指定的深度相对于彼此显示分层。

公开(公告)号：US5546518A

公开(公告)日：1996-08-13

申请号：US369649

申请日：1995-01-06

Applicant: Jon Blossom ,  Michael Edwards

Inventor： Jon Blossom ,  Michael Edwards

IPC: G06T15/50 ,  H04N5/45 ,  H04N7/26 ,  H04N9/75 ,  G11B27/02

CPC classification number: G06T15/503 ,  H04N19/23 ,  G09G2340/125 ,  H04N5/45 ,  H04N9/75 ,  Y10S345/95

Abstract: A data processing apparatus includes a graphics display device for displaying a display frame comprising a plurality of display frame pixels. A sprite management system composes the display frame from a plurality of graphic sprites. Each graphic sprite comprises a plurality of sprite pixels and corresponding sprite pixel values. Each sprite has a specified depth relative to the other sprites. One of the sprites is designated to be a video sprite. This sprite is loaded with a chroma-key value. The sprite management system includes a data processing device connected to access a display frame composition buffer. The data processing device is programmed to write pixel values of individual sprites to the display frame composition buffer. This writing begins with the pixel values of the sprite having the greatest depth and proceeds with the pixel values of the remaining sprites in order of decreasing sprite depth. The display frame data is then passed to a video overlay board which overlays a video image over those pixels containing the chroma-key value. The result is a display frame in which the plurality of graphic sprites, including the video sprite, appear layered with respect to each other in accordance with their respectively specified depths.