Patent US6999800 - Method for power management of a smart phone

A method for power management of a smart phone. The method comprises steps of resetting the smart phone, searching for network service, operating the mobile phone system in standby mode and a PDA system in normal mode when connected to a network, switching the mobile phone system to connection mode when establishing communication with a remote terminal, switching the mobile phone system to sleep mode when the mobile phone system has been idle for a first time period, switching the PDA system to sleep mode when the PDA system has been idle for a second time period, and implementing power detection to switch the mobile phone and PDA system to off mode when the detected power is lower than a first and second threshold respectively.

Inventors: Yu-Chun Peng, Ching-Hsiang Chang, Tzu-Hsun Tung, Hsi-Cheng Yeh
Original Assignee: High Tech Computer Corp.
Primary Examiner: Urban Edward
Secondary Examiner: Dai Phuong
Attorney: Birch,Stewart,Kolasch & Birch,LLP
Current U.S. Classification: 455/574; 455/127.1; 455/127.5; 455/571; 455/572

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Citations

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Referenced by

Citing Patent	Filing date	Issue date	Original Assignee	Title
US7440773	Jan 14, 2005	Oct 21, 2008	Samsung Electronics Co., Ltd	Method for protecting user data in a personal digital assistant (PDA) telephone
US7522915	Feb 22, 2005	Apr 21, 2009	Motorola, Inc.	Method and apparatus to facilitate alternative modes of operation for a portable communication device
US7650433	Jan 5, 2007	Jan 19, 2010	Microsoft Corporation	Power management for multi-interface device clusters
US7706850	Mar 19, 2004	Apr 27, 2010		Integrated detachable PDA and cellular phone
US8135670	Jul 22, 2008	Mar 13, 2012	International Business Machines Corporation	Embedded change logging for data synchronization
US8150459	Mar 20, 2009	Apr 3, 2012	Fujitsu Limited	Information apparatus and controlling method thereof

Claims

1. A method for power management of a smart phone having a power system, a mobile phone system operated in a standby, sleep, connection or off mode, and a PDA system operated in a normal, sleep or off mode, the method comprising steps of:

resetting the smart phone;

searching for network service for the mobile phone system;

operating the mobile phone system in standby mode and the PDA system in normal mode when the network is located and connected to;

switching the mobile phone system from standby mode to connection mode when establishing communication with a remote terminal of the network;

switching the mobile phone system from standby mode to sleep mode when the mobile phone system has been idle for a first period of time;

switching the PDA system from normal mode to sleep mode when the PDA system has been idle for a second period of time; and

implementing a power detection method comprising steps of:

detecting an amount of power of a source in the power system;

switching the mobile phone system to off mode when the detected amount is less than a first threshold; and

switching the PDA system to off mode when the detected amount is less than a second threshold.

2. The method as claimed in claim 1 further comprising the step of:

switching the mobile phone system to sleep mode when the network fails to be either located or connected to.

3. The method as claimed in claim 2 further comprising the step of:

searching for network service while the mobile phone system remains in sleep mode for a third period of time.

4. The method as claimed in claim 1 further comprising the step of:

switching the mobile system from connection mode to standby mode when the communication is terminated.

5. The method as claimed in claim 1, wherein the mobile phone system is switched to off mode when being turned off.

6. The method as claimed in claim 1, wherein the PDA system is switched from sleep mode to normal mode when being awoken.

7. The method as claimed in claim 1, wherein the PDA system is switched to off mode when being turned off.

8. The method as claimed in claim 1, wherein the second period of time is longer than the first period of time.

9. The method as claimed in claim 1, wherein the first threshold is larger than the second threshold.

10. The method as claimed in claim 1, wherein the power detection method is implemented every fourth period of time.

11. The method as claimed in claim 1, wherein the PDA system displays a warning message when the mobile phone system is switched to off mode due to the detected amount of power less than the first threshold.

12. The method as claimed in claim 1, wherein the PDA system displays a warning message when the PDA system is switched to off mode due to the detected amount of power less than the second threshold.

13. The method as claimed in claim 1, wherein the source of the power system is a battery.

14. The method as claimed in claim 1 further comprising steps of:

charging the source in the power system; and

switching the mobile phone system from off mode to standby mode when the amount of power of the source detected is larger than the first threshold.

15. The method as claimed in claim 1 further comprising steps of:

charging the source in the power system; and

switching the PDA system from off mode to normal mode when the amount of power of the source detected is larger than the second threshold.