Power Management System and Method for Vehicle Locating Unit
First Claim
1. A power management system for a vehicle locating unit, the vehicle locating unit having a receiver for receiving at an assigned message frame an intermittent transmission from a communications source, wherein each intermittent transmission includes at least one assignable message frame, the power management system comprising:
- a processing device for controlling wake and sleep modes of the receiver; and
a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame;
wherein the processing device is configured to perform the following steps;
index to the receiver'"'"'s assigned message frame in the intermittent transmission;
re-enter wake mode after indexing; and
subject the receiver to a constant average current draw.
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Accused Products
Abstract
Systems and methods for power management systems are disclosed. One embodiment of the invention includes a power management system for a vehicle locating unit, the vehicle locating unit having a receiver for receiving at an assigned message frame an intermittent transmission from a communications source, wherein each intermittent transmission includes at least one assignable message frame, the power management system including a processing device for controlling wake and sleep modes of the receiver and a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame, wherein the processing device is configured to perform the following steps: index to the receiver'"'"'s assigned message frame in the intermittent transmission, re-enter wake mode after indexing, and subject the receiver to a constant average current draw.
10 Citations
18 Claims
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1. A power management system for a vehicle locating unit, the vehicle locating unit having a receiver for receiving at an assigned message frame an intermittent transmission from a communications source, wherein each intermittent transmission includes at least one assignable message frame, the power management system comprising:
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a processing device for controlling wake and sleep modes of the receiver; and a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame; wherein the processing device is configured to perform the following steps; index to the receiver'"'"'s assigned message frame in the intermittent transmission; re-enter wake mode after indexing; and subject the receiver to a constant average current draw. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of power management for a vehicle locating unit, the vehicle locating unit having a receiver for receiving at an assigned message frame from a communications source an intermittent transmission, wherein each intermittent transmission includes at least one assignable message frame, a processing device for controlling wake and sleep modes of the receiver;
- and a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame, the method comprising the receiver;
indexing to the receiver'"'"'s assigned message frame in the intermittent transmission; re-entering wake mode after indexing; and subjecting the receiver to a constant average current draw. - View Dependent Claims (9, 10, 11, 12)
- and a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame, the method comprising the receiver;
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13. A power management system for a vehicle locating unit, the vehicle locating unit having a receiver for receiving at an assigned message frame an intermittent transmission from a communications source and a transmitter for transmitting reply code, wherein each intermittent transmission includes at least one assignable message frame and at least one of an activate command, a de-activate command, and a speed-up command, the power management system comprising:
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a processing device for controlling wake and sleep modes of the receiver; and a memory for storing a plurality of memory bit patterns for comparison with a pattern of bits contained in some portion of an assigned message frame; wherein the processing device is configured to perform the following steps; index to the receiver'"'"'s assigned message frame in the intermittent transmission; re-enter wake mode after indexing; upon receipt of an activate command, switch the transmitter from a de-activated state to a slow mode state; switch the transmitter from the slow mode state to a slower, second slow mode state after a period of time; upon receipt of a speed-up command, switch the transmitter from at least one of the slow mode state and the second slow mode state to a fast mode state; and switch the transmitter from the fast mode state to the slow mode state after a period of time; and wherein operation of the system subjects the receiver to a constant average current draw. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification