Power management system for cellular telephones
First Claim
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1. A mobile phone power management system for a mobile phone with a display, battery and key pad with a plurality of keys, the system comprising, in combination:
- a detector to detect the simultaneous depression of a power on key and another key on the mobile phone wherein said mobile phone does not become active as a wireless phone in response to said detector;
a display circuit responsive to said detector for displaying on the display the status of the mobile phone battery.
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Abstract
A cellular telephone power management system is described that can be actuated without the telephone becoming active for making or receiving calls. The management system provides the user with a useful indication of the power available in the telephone battery based on utilization since the last complete battery charge. Additionally, the available power indication is provided in a form which specifies available talk time and available standby time.
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Citations
15 Claims
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1. A mobile phone power management system for a mobile phone with a display, battery and key pad with a plurality of keys, the system comprising, in combination:
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a detector to detect the simultaneous depression of a power on key and another key on the mobile phone wherein said mobile phone does not become active as a wireless phone in response to said detector;
a display circuit responsive to said detector for displaying on the display the status of the mobile phone battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power management system for a mobile phone comprising, in combination:
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a battery within said mobile phone to provide electrical power thereto;
a display in said phone;
a display generator coupled to said display and powered by said battery to cause the display of a battery status representation of talk time and standby time remaining before said battery becomes discharged wherein the battery status representation is a graphical image plotting talk time available before battery discharge versus standby time. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification