Semiconductor memory circuit and method for operating the...

Electrical computers and digital processing systems: support – Computer power control – Power conservation

Reexamination Certificate

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C713S300000, C713S323000, C713S324000, C713S330000, C365S226000, C323S271000

Reexamination Certificate

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07356718

ABSTRACT:
A semiconductor memory circuit having a controller by means of which the semiconductor memory circuit can be switched into a standby mode with a reduced power requirement, comprises an analog subcircuit having a power input and a signal output and is characterized by the fact that a switching device for feeding electrical power is connected to the power input and the controller is connected to the switching device in such a way that the switching device can be driven by the controller in such a way that the switching device, in the standby mode, supplies the analog subcircuit with electrical power during a first periodically repeated time duration and does not supply it with electrical power during a second periodically repeated time duration.

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patent: 6133779 (2000-10-01), Sichert et al.
patent: 6163225 (2000-12-01), Sundaram et al.
patent: 6560157 (2003-05-01), Sugita et al.
patent: 6646894 (2003-11-01), Hong et al.
patent: 7042278 (2006-05-01), Ikoma et al.
patent: 2004/0083397 (2004-04-01), Chen
patent: 198 32 309 (1999-10-01), None
German Patent Office Examination Report dated Sep. 9, 2004.

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