Static information storage and retrieval – Addressing – Sync/clocking
Reexamination Certificate
2006-02-07
2006-02-07
Ho, Hoai (Department: 2827)
Static information storage and retrieval
Addressing
Sync/clocking
C365S194000, C365S198000, C365S230030, C365S230050
Reexamination Certificate
active
06996027
ABSTRACT:
A synchronous memory device and a synchronous multi-port memory device preventing a skew between data and data strobe signal according to data transmission path is disclosed. In order to eliminate such a position dependence, the synchronous memory device and the synchronous multi-port memory device adopt a scheme of transmitting the data strobe signal together with the data. If a data driving block transmits the data capture pulse together with the data, the data and the data capture pulse pass the same delay without regard to the data transmission/reception blocks, thus preventing the occurrence of the skew. In other words, the present invention adopts a source synchronization scheme, which is used at an outside of the conventional synchronous DRAM, into the memory device. Specifically, the present invention can be applied to a synchronous multi-port memory device having a plurality of independent ports.
REFERENCES:
patent: 6359815 (2002-03-01), Sato et al.
patent: 2004/0076044 (2004-04-01), Nowshadi
patent: 2005/0137966 (2005-06-01), Mungula et al.
Blakely & Sokoloff, Taylor & Zafman
Ho Hoai
Hynix / Semiconductor Inc.
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