公开(公告)号：US07788505B2

公开(公告)日：2010-08-31

申请号：US11300542

申请日：2005-12-14

申请人： Allen J. C. Porter ,  Chun Wang ,  Kevork Kechichian ,  Gabriel Varga ,  David Strasser

发明人： Allen J. C. Porter ,  Chun Wang ,  Kevork Kechichian ,  Gabriel Varga ,  David Strasser

IPC分类号： G06F11/30

CPC分类号： G06F12/1458 ,  G06F12/1441 ,  G09G5/363 ,  G09G5/39 ,  G09G2340/02 ,  G09G2360/12 ,  H04N5/4401 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4435

摘要： A graphics processor receives a compressed encrypted video stream. The graphics processor decrypts the compressed encrypted video stream and stores a decrypted version (i.e., a decrypted compressed video stream) in a protected portion of an on-chip or off-chip video memory. The graphics processor then permits processors and other bus masters on the graphics processor to access the on-chip video memory, but conditionally limits access to other bus masters that are located off-chip, such as a central processing unit located off-chip and coupled to the graphics processor via a bus.

摘要翻译： 图形处理器接收压缩的加密视频流。 图形处理器解密压缩的加密视频流，并将解密版本（即，解密的压缩视频流）存储在片上或片外视频存储器的受保护部分中。 然后，图形处理器允许图形处理器上的处理器和其他总线主机访问片上视频存储器，但有条件地限制对位于芯片外的其它总线主机的访问，诸如位于芯片外的耦合的中央处理单元 通过总线到图形处理器。

公开(公告)号：US06208354B1

公开(公告)日：2001-03-27

申请号：US09185879

申请日：1998-11-03

申请人： Allen J. C. Porter

发明人： Allen J. C. Porter

IPC分类号： G06T1180

CPC分类号： H04N5/44508 ,  H04N5/4401 ,  H04N21/42653 ,  H04N21/4307 ,  H04N21/4348 ,  H04N21/8146

摘要： A method and apparatus for storing and displaying multiple graphical images in a mixed video and graphics display is accomplished by determining an amount of memory sufficient to display a single graphics image in a subset of the display. Once the amount of memory required for a single image is determined, the pre-allocated portion of memory for graphics images is divided into an array. Graphics images are then rendered and stored within this array. One of the pre-rendered images is selected by a control block, wherein the selection is based on registers or parameters referenced by the control block. A display output engine fetches the selected one of the plurality of pre-rendered graphics images that is stored within the array and combines the selected graphics image with the video data stream to produce a display output stream. The display output stream is then fed to a display device that displays the graphics image.

摘要翻译： 在混合视频和图形显示中存储和显示多个图形图像的方法和装置通过确定足以在显示器的子集中显示单个图形图像的存储器的量来实现。 一旦确定了单个图像所需的存储量，则用于图形图像的存储器的预分配部分被分成数组。 然后将图形图像呈现并存储在该阵列中。 预渲染图像之一由控制块选择，其中所述选择基于由控制块引用的寄存器或参数。 显示输出引擎取出存储在阵列内的多个预先渲染的图形图像中的所选择的一个，并将所选择的图形图像与视频数据流组合以产生显示输出流。 显示输出流然后被馈送到显示图形图像的显示设备。

公开(公告)号：US07055038B2

公开(公告)日：2006-05-30

申请号：US09850356

申请日：2001-05-07

申请人： Allen J. C. Porter ,  Chun Wang ,  Kevork Kechichian ,  Gabriel Varga ,  David Strasser

发明人： Allen J. C. Porter ,  Chun Wang ,  Kevork Kechichian ,  Gabriel Varga ,  David Strasser

IPC分类号： G06F12/14 ,  G06T1/00 ,  H04L9/00

CPC分类号： G06F12/1458 ,  G06F12/1441 ,  G09G5/363 ,  G09G5/39 ,  G09G2340/02 ,  G09G2360/12 ,  H04N5/4401 ,  H04N21/4405 ,  H04N21/4408 ,  H04N21/4435

摘要： A graphics processor receives a compressed encrypted video stream. The graphics processor decrypts the compressed encrypted video stream and stores a decrypted version (i.e., a decrypted compressed video stream) in a protected portion of an on-chip or off-chip video memory. The graphics processor then permits processors and other bus masters on the graphics processor to access the on-chip video memory, but conditionally limits access to other bus masters that are located off-chip, such as a central processing unit located off-chip and coupled to the graphics processor via a bus.

公开(公告)号：US07365757B1

公开(公告)日：2008-04-29

申请号：US09213748

申请日：1998-12-17

申请人： Edward G. Callway ,  Allen J. C. Porter ,  Chun-Chin David Yeh ,  Philip L. Swan

发明人： Edward G. Callway ,  Allen J. C. Porter ,  Chun-Chin David Yeh ,  Philip L. Swan

IPC分类号： G09G5/00 ,  H04N9/74

CPC分类号： G09G5/397 ,  G09G2320/0247 ,  G09G2340/0407 ,  G09G2340/125 ,  G09G2370/042

摘要： A method and apparatus for independent video and graphics scaling in a video graphics system is accomplished by receiving a video data stream, wherein the video data stream includes video data in a first format. A graphics data stream is also received, and the graphics data stream includes graphics data in a second format. The video data of the video data stream is scaled based on a ratio between the first format and a selected video format to produce a scaled video stream. Similarly, the graphics data of the graphics data stream is scaled based on a ratio between the second format and a selected graphics format in order to produce a scaled graphics stream. The scaled video stream and the scaled graphics stream are then merged to produce a video graphics output stream.

摘要翻译： 通过接收视频数据流来实现视频图形系统中的独立视频和图形缩放的方法和装置，其中视频数据流包括第一格式的视频数据。 还接收图形数据流，并且图形数据流包括第二格式的图形数据。 基于第一格式和所选视频格式之间的比率来缩放视频数据流的视频数据，以产生缩放的视频流。 类似地，图形数据流的图形数据基于第二格式和所选图形格式之间的比例进行缩放，以便产生缩放的图形流。 缩放的视频流和缩放的图形流然后被合并以产生视频图形输出流。