US 6,983,384 B2 | ||
Graphics controller and power management method for use in the same | ||
Tsutomu Iwaki, Hanno (Japan) | ||
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
Filed on Aug. 30, 2001, as Appl. No. 9/941,861. | ||
Claims priority of application No. 2000-263874 (JP), filed on Aug. 31, 2000. | ||
Prior Publication US 2002/0032877 A1, Mar. 14, 2002 | ||
Int. Cl. G06F 1/26 (2006.01); G06F 1/32 (2006.01) |
U.S. Cl. 713—300 | 15 Claims |
1. A graphics controller for controlling a display monitor of a computer, comprising:
a register configured to be accessed through a bus of the computer and to store state control data designating a state that
the graphics controller is to assume;
a logic unit configured to operate in a working state and a low power-consumption state and to transit to the working state
or the low power-consumption state in accordance with the state control data stored in the register; and
a switch provided between the register and the logic unit and configured to prohibit the state control data designating the
low power-consumption state from being transmitted from the register to the logic unit, thereby to maintain the logic unit
in the working state.
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