US 7,321,973 B2
System for controlling power to a system part using a control unit and wherein the power to the control unit is controlled using a power controller
Yeong-bok Choi, Suwon (Korea, Republic of); and Moon-kyou Kim, Suwon (Korea, Republic of)
Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of)
Filed on Apr. 26, 2004, as Appl. No. 10/831,366.
Claims priority of application No. 10-2003-0040839 (KR), filed on Jun. 23, 2003; and application No. 10-2003-0054479 (KR), filed on Aug. 06, 2003.
Prior Publication US 2005/0010829 A1, Jan. 13, 2005
Int. Cl. G06F 1/00 (2006.01); G06F 1/26 (2006.01)
U.S. Cl. 713—320  [713/300; 713/324] 43 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a system part to provide a function of the electrical device if an operating power is supplied to the system part;
a control unit which, if the control unit is turned on, controls whether the operating power is received by the system part;
a power controller which selectively turns on the control unit to allow the control unit to provide the operating power and turns off the control unit to prevent the control unit from providing the operating power; and
a power selector which outputs a power select signal received at the power controller according to an operation of a user in order to turn on the power controller so as to turn on the control unit,
wherein the power controller comprises a control power circuit which controls whether a control power supply outputs a control power so as to control the control unit based on a power select signal.