Burst memory access method to rectangular area

Details Burst memory access method to rectangular area Burst memory access method to rectangular area

2005-03-18

2010-12-14

Wu, Xiao M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Graphic display memory controller

C345S474000, C345S533000, C365S233180, C710S035000, C348S208400, C375S240160

Reexamination Certificate

active

07852343

ABSTRACT:
The information processing device in the present invention includes a memory1which is a DRAM featuring a burst mode, and burst-transfers data at successive column addresses, masters (13), (14), and (15) which issue access requests, and a command processing unit (11) which converts an access address that is included in the access request issued from each master. One or more of the masters access an M×N rectangular area where M and N are integers, and the command processing unit (11) converts access addresses so that a column address of data at the (K+m)th column, where K and m are integers and m≦M, of an Lth line, and a column address of data at a Kth column of an (L+n)th line, where L and n are integers and n≦N, become successive.

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