Battery charge reservation for emergency communications
First Claim
Patent Images
1. A wireless communications device comprising:
- an electronics system configured to provide communications over a communications network;
a primary battery configured to power the electronics system during a power-on mode; and
a secondary battery configured to power the electronics system, in response to an emergency signal being received while said electronics are in a power-off mode;
wherein the electronics system;
uses historical information, about an amount of time a previous battery charge lasted, to determine an estimated amount of time for the primary battery to remain charged;
establishes a voltage threshold of the primary battery, based on the historical information, to ensure that the wireless communications device, at the voltage threshold, has sufficient power for an emergency communication;
establishes an offset power threshold that is a multiplier of the voltage threshold, the multiplier being greater than 1; and
displays, on a display, a battery power meter that indicates both the voltage threshold and the offset power threshold.
2 Assignments
0 Petitions
Accused Products
Abstract
A wireless communications device and method for establishing a voltage threshold at which to turn off electronics of a wireless communications device includes determining a power threshold level at which a device is to be shut off when a battery of the device reaches or drops below the power threshold level. The determined power threshold level may be offset. The amount of power remaining for the battery in the communications device may be measured. The communication device may be shut off based on the offset power threshold level so as to preserve enough power for an emergency message to be generated and sent in the case of an emergency.
145 Citations
20 Claims
-
1. A wireless communications device comprising:
-
an electronics system configured to provide communications over a communications network; a primary battery configured to power the electronics system during a power-on mode; and a secondary battery configured to power the electronics system, in response to an emergency signal being received while said electronics are in a power-off mode; wherein the electronics system; uses historical information, about an amount of time a previous battery charge lasted, to determine an estimated amount of time for the primary battery to remain charged; establishes a voltage threshold of the primary battery, based on the historical information, to ensure that the wireless communications device, at the voltage threshold, has sufficient power for an emergency communication; establishes an offset power threshold that is a multiplier of the voltage threshold, the multiplier being greater than 1; and displays, on a display, a battery power meter that indicates both the voltage threshold and the offset power threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method, comprising:
-
using historical information, about an amount of time a previous battery charge lasted, to determine an estimated amount of time for a primary battery of a wireless communications device to remain charged; determining an amount of power used by the wireless communications device to perform a powered-down emergency communication; establishing, based on the historical information, a voltage threshold level of a battery of the wireless communications device that, when measured, causes electronics of the wireless device to turn off so as to ensure that the wireless communications device has sufficient power to perform at least one powered-down emergency communication if activated by a user; and setting a turn-off voltage threshold parameter in the wireless communications device based on an offset power threshold level, the offset power threshold level based on a multiplier of the voltage threshold level, the multiplier being greater than 1, the turn-off voltage parameter causing the wireless communications device to turn off at a certain battery voltage level to ensure sufficient battery power remains to perform at least one powered-down emergency communication; and displaying on a battery power meter, both the voltage threshold level and the offset power threshold level. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A method for establishing a power threshold at which to turn off electronics of a wireless communications device, said method comprising:
-
using historical information, about an amount of time a previous battery charge lasted, to determine an estimated amount of time for a battery of the device to remain charged determining a power threshold level, based on the historical information, at which a device is to be shut off when the battery of the device reaches or drops below the power threshold level; establishing an offset power threshold that is a multiplier of the determined power threshold level, the multiplier being greater than 1; displaying, on a battery power meter, both the power threshold level and the offset power threshold level; measuring the amount of power remaining for the battery in the communications device; and shutting off the communication device based on the offset power threshold level. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification