Electrical computers and digital processing systems: memory – Storage accessing and control – Access timing
Reexamination Certificate
2008-03-18
2008-03-18
Bataille, Pierre-Michel (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Access timing
C711S154000
Reexamination Certificate
active
07346752
ABSTRACT:
In order to output an active command to an SDRAM, at time t0, output of a valid row address starts and a control signal ras# enters the active state. Thereafter, a control signal cs# enters the active state at time t1. At time t3, the signal cs# returns to the negative state. At time t4when some period of time has passed after time t3, output of the valid row address stops and the signal ras# enters the negative state. Outputs of the address signal adr and the control signals ras#, cas# and we# are controlled in synchronization with a modulated clock S-clk, which is generated at the spread spectrum generator. This reduces the electromagnetic interference that is caused by the address signal adr and the control signals ras#, cas# and we#.
REFERENCES:
patent: 5784704 (1998-07-01), Sanemitsu
patent: 6125431 (2000-09-01), Kobayashi
patent: 6240495 (2001-05-01), Usui et al.
patent: 6330627 (2001-12-01), Toda
patent: 6763448 (2004-07-01), Mitsuishi
patent: 6876395 (2005-04-01), Muto et al.
patent: 6944738 (2005-09-01), Dong
patent: 7225311 (2007-05-01), Ware et al.
patent: 2002/0039315 (2002-04-01), Ooishi
patent: 2004/0105292 (2004-06-01), Matsui
patent: A-11-167515 (1999-06-01), None
patent: A-11-328004 (1999-11-01), None
patent: A-2000-280575 (2000-10-01), None
patent: A-2001-111745 (2001-04-01), None
patent: A-2002-182973 (2002-06-01), None
patent: A-2003-101806 (2003-04-01), None
Bataille Pierre-Michel
Brother Kogyo Kabushiki Kaisha
Oliff & Berridg,e PLC
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