Title: Synchronization access method, system thereof and plot processing unit thereof
Application Number: 200710003928 Application Date: 2007.01.18
Publication Number: 1983328 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06T1/20;G06T1/60
Applicant(s) Name: VIA Tech Inc. Address:
Inventor(s) Name: Chen Wenzhong;Xu Jianming;Qu Huizhong;Zheng Jianga
Attorney & Agent: bomai wen huangxiao lin
Abstract:
    A synchronization access system and method adapting to synchronization access memory among plurality of modules in the pipeline system. The synchronization access system includes an upstream module and a downstream module for respectively sharing at least one position of the memory. The upstream module is used for receiving a double command having matching identifier, wherein the waiting command is used to make the upstream module delay access the memory in order to avoid the generation of the read out obstacle after written, and the signal command is used to sent to the downstream module. The downstream module transfers the identifier from the signal command to the upstream module when the downstream in idle status in order to cutoff the access for memory. The upstream module stores at least one position for the memory based on judging whether the identifier that received by direct connection in the downstream module is from the double commands.
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