ALARM-BASED POWER SAVING MODE FOR AN ELECTRONIC DEVICE
First Claim
1. A power saving mode for an electronic device with a microprocessor and a telematics circuit, comprising:
- a power source;
a microprocessor and a telematics circuit powered by the power source;
a power switch on a power distribution line between the power source and the microprocessor and the telematics circuit for energizing or powering off the telematics circuit and the microprocessor;
a power latch for controlling the power switch at a power switch control based on a control value sent from the microprocessor to the power latch; and
an alarm with an external sensor powered by the power source with a configuration value sent by the microprocessor for producing a signal alarm to the power latch;
wherein the power switch is closed to energize the microprocessor and the telematics circuit when the signal alarm reaches the control value, and wherein the power switch is opened to power off the microprocessor and the telematics circuit at the request of the power latch controlled by the microprocessor.
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Accused Products
Abstract
This disclosure relates to an alarm-based power saving mode and associated system implemented on a device for a microprocessor or a telematics circuitry, and more particularly, to an alarm and powered-up microprocessor-driven power latch for disabling a power source to a microprocessor or telematics circuitry at a power switch. A microprocessor and/or telematics circuitry are powered down by an instruction step from the microprocessor or the telematics circuitry by using a power switch to cut off power. The switch is controlled by a power latch, which is regulated by a wake-up value given to an alarm to enable the power latch and exercise power switch control, as well as by a value given directly by the microprocessor to enter the powered down mode.
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Citations
11 Claims
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1. A power saving mode for an electronic device with a microprocessor and a telematics circuit, comprising:
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a power source; a microprocessor and a telematics circuit powered by the power source; a power switch on a power distribution line between the power source and the microprocessor and the telematics circuit for energizing or powering off the telematics circuit and the microprocessor; a power latch for controlling the power switch at a power switch control based on a control value sent from the microprocessor to the power latch; and an alarm with an external sensor powered by the power source with a configuration value sent by the microprocessor for producing a signal alarm to the power latch; wherein the power switch is closed to energize the microprocessor and the telematics circuit when the signal alarm reaches the control value, and wherein the power switch is opened to power off the microprocessor and the telematics circuit at the request of the power latch controlled by the microprocessor. - View Dependent Claims (2, 3, 4, 5)
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6. A method of saving power at a power source of an electronic device with a microprocessor and a telematics circuit, the method comprising the steps of:
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connecting a power saving system with a power source to a microprocessor and a telematics circuit powered by the power source, including a power switch on a power distribution line between the power source and the microprocessor and the telematics circuit for energizing or powering off the telematics circuitry and the microprocessor, a power latch for controlling the power switch at a power switch control based on a control value sent from the microprocessor to the power latch, and an alarm with an external sensor powered by the power source with a configuration value sent from the microprocessor for producing a signal alarm to the power latch; programming the configuration value of the alarm associated with a detection level of the alarm via the microprocessor to energize the microprocessor and the telematics circuit for the closing of the power switch from the power latch; allowing the microprocessor to direct the power latch to open the power switch to power off the microprocessor and the telematics circuit; and allowing the alarm to direct the power latch to close the power switch to power on the microprocessor and the telematics circuit when the detection level of the alarm reaches the control value. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification