Method for Displaying Time on a Mobile Telephone

• US 20080268909A1
• Filed: 08/18/2005
• Published: 10/30/2008
• Est. Priority Date: 11/24/2004
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Chen, Jianhua, Hou, Fangxi, Lin, Guanggang
• Granted Patent: US 8,108,006 B2
• Time in Patent Office: Days
• US Class Current: 455/566
• CPC Class Codes: H04M 1/21 Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for time display on a mobile phone is disclosed. The method includes setting a pseudo power off identifier for said mobile phone responsive to receiving a pseudo power off setting from a user of said mobile phone. The method also includes entering said pseudo power off state upon receiving a pseudo power off indication from said user when said pseudo power off identifier is set. The method additionally includes periodically obtaining a new time value through a bottom clock, and displaying said new time value on a LCD of said mobile phone in said pseudo power off state.

Claims

1. A method for time display on a mobile phone, comprising:

a) setting a pseudo power off identifier for said mobile phone responsive to receiving a pseudo power off setting from a user of said mobile phone;

b) entering said pseudo power off state upon receiving a pseudo power off indication from said user when said pseudo power off identifier is set;

c) periodically obtaining a new time value through a bottom clock, and displaying said new time value on a LCD of said mobile phone in said pseudo power off state.

2. The method according to claim 1 wherein said step b) further includes storing the current time to a storage system of the mobile phone 2 upon entering said pseudo power off state, and wherein said step c) further includes obtaining the time stored in the storage system as a reference value for time display, and obtaining a new time value by way of calculation through a bottom clock and wherein time values stored in said storage system are cleared when exiting said pseudo power off state.

3. The method according to claim 2 wherein said pseudo power off indication is represented by long pressing a function key.

4. The method according to claim 3, wherein said step b) further includes shutting down and restarting said mobile phone, said shutting down is accomplished by long pressing said function key, and if said pseudo power off identifier is active upon said shutting down, said current time is stored into said storage system of the mobile phone;

said restarting commences after said current time is stored, wherein only tasks relevant to said storage system and said displaying said time are restarted, thereby enabling said mobile phone to enter said pseudo power off state.

5. The method according to claim 4 further comprising exiting said pseudo power off state by responding to an advanced interrupt, and as part of said exiting, clearing said time values stored in said storage system through calling an interrupt function, then calling an endless loop function and restarting.

6. The method according to claim 4 further comprising judging whether a time reference value obtained from said storage system is zero, if said time reference value is zero, starting said mobile phone normally instead of entering said pseudo power off state and if said time reference value is zero, entering said pseudo power off state.

7. The method according to claim 3 wherein said step b) further includes, after said pseudo power off indication is received, shutting down each task while only keeping tasks relevant to a bottom clock of said mobile phone, then entering into said pseudo power off state, wherein tasks which are shut down at least include a radio frequency task.

8. The method according to claim 7 further comprising exiting said pseudo power off state by responding to an advanced interrupt, and as part, of said exiting, clearing said time values stored in said storage system through calling an interrupt function, then calling an endless loop function and restarting.

9. The method according to claim 7 further comprising judging whether a time reference value obtained from said storage system is zero, if said time reference value is zero, starting said mobile phone normally instead of entering said pseudo power off state and if said time reference value is zero, entering said pseudo power off state.

10. The method according to claim 2 wherein said storage system is an embedded file system of a CDMA mobile phone.

11. The method according to claim 10 further comprising judging whether a time reference value obtained from said storage system is zero, if said time reference value is zero, starting said mobile phone normally instead of entering said pseudo power off state and if said time reference value is zero, entering said pseudo power off state.

12. The method according to claim 2 further comprising judging whether a time reference value obtained from said storage system is zero, if said time reference value is zero, starting said mobile phone normally instead of entering said pseudo power off state and if said time reference value is zero, entering said pseudo power off state.

13. The method according to claim 12 further comprising compensating the obtained time data stored in the storage system.

14. The method according to claim 2 further comprising exiting said pseudo power off state by responding to an advanced interrupt, and as part of said exiting, clearing said time values stored in said storage system through calling an interrupt function, then calling an endless loop function and restarting.

15. The method according to claim 14 wherein said advanced interrupt is an event of long pressing said function key.

16. The method according to claim 15 further comprising judging whether a time reference value obtained from said storage system is zero, if said time reference value is zero, starting said mobile phone normally instead of entering said pseudo power off state and if said time reference value is zero, entering said pseudo power off state.

17. The method according to claim 2, further comprising

setting a bottom timer, and said timer being able to generate interrupt when the mobile phone is in the dormant state;

starting said timer;

turning off a fast clock temperature compensated crystal oscillator, switching to a slow clock and entering a chip into the dormant mode;

when said timer expires, generating an interrupt and calling the interrupt, function, and in the interrupt function, switching the slow clock to the fast clock temperature compensated crystal oscillator, calculating the newest time data and renewing the LCD for the new time display; and

re-setting the timer, turning off the fast clock and entering into the dormant mode.

18. The method according to claim 1 wherein step b) further comprises judging whether said pseudo power off identifier is active through long pressing said function key.

19. The method according to claim 1 further comprising exiting said pseudo power off state by responding to an advanced interrupt, and as part of said exiting, dealing said time values stored in said storage system through calling an interrupt function, then calling an endless loop function and restarting.

20. The method according to claim 1 further comprising:

setting a bottom timer, and the timer being able to generate interrupt when the mobile phone is in the dormant state;

starting the timer;

turning off a fast clock temperature compensated crystal oscillator, switching to a slow clock and entering a chip into the dormant mode;

when the timer reaches, generating an interrupt then calling the interrupt function, and in the interrupt function, switching the slow clock to the fast clock temperature compensated crystal oscillator, calculating the newest time data and renewing the LCD for the new time display; and

re-setting the timer, turning off the fast clock and entering into the dormant mode.