Method and apparatus for managing power of portable information device

• US 20060090088A1
• Filed: 08/25/2005
• Published: 04/27/2006
• Est. Priority Date: 10/23/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Sung-sik, Choi, Jin-hyeon
• Granted Patent: US 8,001,406 B2
• Time in Patent Office: Days
• US Class Current: 713/300
• CPC Class Codes: G06F 1/3215 Monitoring of peripheral devices

Abstract

Provided are a method and apparatus for managing power of a portable information device. The apparatus includes: a display unit displaying a power management mode picture when a wake-up signal is input during a low-power consumption state of the portable information device; and a processing unit setting the portable information device again in the low-power consumption state when a user'"'"'s input, as a response to the power management mode picture, is not received within a predetermined time after the power management mode picture is output to the display unit. Accordingly, even when a button on the portable information device is accidentally pressed, battery thereof can be prevented from being needlessly consumed.

Claims

1. An apparatus for managing power of a portable information device, the apparatus comprising:

a display unit displaying a power management mode picture when a wake-up signal is input during a low-power consumption state of the portable information device; and

a processing unit setting the portable information device again in the low-power consumption state when a user'"'"'s input, as a response to the power management mode picture, is not received within a predetermined time after the power management mode picture is output to the display unit.

2. The apparatus of claim 1, wherein the processing unit sets the portable information unit in a normal operating state when the user'"'"'s input is received within the predetermined time.

3. A method of managing power of a portable information device, the method comprising:

generating a display when a wake-up signal is input during a low-power consumption state of the portable information device; and

maintaining the portable information device in the low-power consumption state when a user input, as a response to the display, is not received within a predetermined time after the display is generated.

4. The method of claim 3, further comprising:

setting the portable information device in a normal operating state when the user'"'"'s input is received within the predetermined time.

5. The method of claim 3, wherein the display is a power management mode picture.

6. An apparatus for managing power of a portable information device, the apparatus comprising:

a complex programmable logic device (CPLD) unit sending an interrupt signal based on whether a battery voltage drops below a predetermined threshold voltage;

a processing unit receiving the interrupt signal and entering a suspend mode or executing a power management screen saver mode based on the interrupt signal;

a first general purpose input-output (GPIO) unit receiving the interrupt signal from the CPLD indicating the battery voltage drop being below the predetermined threshold voltage and sending a control signal;

a sleep mode setting unit receiving the control signal from the first GPIO unit and setting the portable information device to a low-power consumption mode;

an input/output device (I/O) device unit generating a predetermined wake-up signal;

a second GPIO unit for receiving and transmitting the wake-up signal; and

a power management screen saver mode executing unit receiving the transmitted wake-up signal from the second GPIO unit and outputting a power management mode picture to a display unit of the I/O device unit.

7. The apparatus for managing power of a portable information device according to claim 6, wherein the power management mode picture indicates if the wake-up signal is generated intentionally.