Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2008-05-27
2008-05-27
Elamin, A. (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S300000, C713S001000, C713S002000
Reexamination Certificate
active
07380149
ABSTRACT:
A mechanism of making a low standby current caused by power off compatible with a fast return operation from a standby caused by an interrupt is realized. An information processing device has a first area that includes a central processing unit and peripheral circuit modules, a second area having information holding circuits for holding values of registers contained in the peripheral circuit modules, and a first power switch for controlling supply of a current to the first area. When the information processing device operates in a first mode, an operating current is supplied to the first area and the second area. When the information processing device operates in a second mode, the first power switch is controlled so that the supply of the current to the first area can be shut off, and the supply of the current to the second area is continued.
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Hayakawa Miki
Ide Hisayoshi
Irie Naohiko
Ozawa Motokazu
Tamaki Saneaki
Antonelli, Terry Stout & Kraus, LLP.
Elamin A.
Rahman Fahmida
Renesas Technology Corp.
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