发明申请
WO2006026265A3 METHOD AND APPARATUS FOR READING AND WRITING PIXEL-ALIGNED SUBFRAMES IN A FRAME BUFFER
审中-公开
基本信息:
- 专利标题: METHOD AND APPARATUS FOR READING AND WRITING PIXEL-ALIGNED SUBFRAMES IN A FRAME BUFFER
- 专利标题(中):在帧缓冲器中读取和写入像素对准的子帧的方法和装置
- 申请号:PCT/US2005029945 申请日:2005-08-23
- 公开(公告)号:WO2006026265A3 公开(公告)日:2007-08-02
- 发明人: MEEKER WOODROW L , SUNG CLARA KA WAH , MORRIS CARL ALAN
- 申请人: SILICON OPTIX , MEEKER WOODROW L , SUNG CLARA KA WAH , MORRIS CARL ALAN
- 专利权人: SILICON OPTIX,MEEKER WOODROW L,SUNG CLARA KA WAH,MORRIS CARL ALAN
- 当前专利权人: SILICON OPTIX,MEEKER WOODROW L,SUNG CLARA KA WAH,MORRIS CARL ALAN
- 优先权: US60591304 2004-08-31
- 主分类号: G06F15/00
- IPC分类号: G06F15/00 ; G06F15/16
摘要:
System and method for reading and writing pixel aligned subframes from a frame buffer in a parallel processing system are disclosed. Optimal bandwidth access of the frame buffer requires that data be moved in bursts having multiple data words. Subframes are specified at X and Y locations within the image frame with a resolution of one pixel. In addition, subframes within a row may overlap each other and consecutive subframe rows may also overlap. Memory control logic of the invention provides pixel packing and unpacking and storing selected pixel data in a cache memory. Reading and writing to the frame buffer is provided in a manner that makes optimal use of the frame buffer internal architecture. Other capabilities of the memory control logic include decimation of pixel data during input, suppression of redundant frame buffer writes, and accessing image frame data in an interlaced manner.
摘要(中):
公开了一种用于从并行处理系统中的帧缓冲器读取和写入像素对准子帧的系统和方法。 帧缓冲器的最佳带宽访问需要在具有多个数据字的突发中移动数据。 在具有一个像素的分辨率的图像帧内的X和Y位置处指定子帧。 此外,一行内的子帧可能彼此重叠,并且连续的子帧行也可以重叠。 本发明的存储器控制逻辑提供像素打包和解包并将所选择的像素数据存储在高速缓冲存储器中。 以帧缓冲器内部架构的最佳利用方式提供对帧缓冲器的读写。 存储器控制逻辑的其他功能包括在输入期间抽取像素数据,抑制冗余帧缓冲器写入以及以隔行扫描方式访问图像帧数据。