公开(公告)号：US20040168127A1

公开(公告)日：2004-08-26

申请号：US10667354

申请日：2003-09-23

Applicant: RENESAS TECHNOLOGY CORP.

Inventor： Tomohiro Sakurai ,  Toru Kengaku ,  Tatsuya Ueda

IPC: G06F017/21

CPC classification number: G06T1/60 ,  G06T3/40

Abstract: When a line number counted by a line number counting unit corresponds to a prescribed line number, a transfer source address generating unit adds an offset address set in an offset address setting unit to respective transfer source addresses to output as addresses to a memory. A DMA control unit controls DMA transfer in accordance with a transfer source address generated by the transfer source address generating unit and a transfer destination address generated by a transfer destination address generating unit. Thus, rapid enlargement/reduction of image data becomes possible.

Abstract translation: 当由行数计数单元计数的行号对应于规定行号时，传送源地址产生单元将偏移地址设置单元中设置的偏移地址添加到各个传送源地址，作为地址输出到存储器。 DMA控制单元根据由传送源地址生成单元生成的传送源地址和由传送目的地地址生成单元生成的传送目的地地址进行DMA传送。 因此，图像数据的快速放大/缩小成为可能。