发明授权
- 专利标题: Information processing apparatus and information processing method
- 专利标题(中): 信息处理装置和信息处理方法
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申请号: US11911458申请日: 2006-04-06
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公开(公告)号: US08412864B2公开(公告)日: 2013-04-02
- 发明人: Hiroshi Kyusojin , Hideki Matsumoto
- 申请人: Hiroshi Kyusojin , Hideki Matsumoto
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Finnegan Henderson Farabow Garrett & Dunner, L.L.P.
- 优先权: JP2005-115371 20050413
- 国际申请: PCT/JP2006/307335 WO 20060406
- 国际公布: WO2006/112270 WO 20061026
- 主分类号: G06F13/28
- IPC分类号: G06F13/28
摘要:
The present invention relates to an information processing apparatus capable of accurately controlling DMA transfer of a plurality of pieces of data present in a memory with a simple hardware configuration, and an information processing method for use therewith. A memory 33 is provided with a descriptor table T0 corresponding to a queue Q0 and a descriptor table T1 corresponding to a queue Q1. In registers R0 and R1 of a descriptor controller 51, the descriptor number constituting the descriptor table T0 and the descriptor number constituting the descriptor table T1 are recorded, respectively. In caches C0 and C1 of a descriptor obtaining section 52, descriptors of the descriptor table T0 and descriptors of the descriptor table T1 are recorded, respectively. A descriptor selector 53 selects one of the caches C0 and C1 in accordance with a predetermined rule. The present invention can be applied to all electronic apparatuses for performing DMA transfer.
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