Power management system and method for vehicle locating unit
First Claim
1. A system for power management of 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 system comprising:
- a processing device of the vehicle locating unit in communication with the receiver, the processing device for controlling a wake mode and a sleep mode of the receiver; and
a memory of the vehicle locating unit in communication with the processing device, the 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 that is assigned to the vehicle locating unit;
wherein the processing device is configured to perform the following;
causing the receiver to enter a wake mode to find a start of an intermittent transmission from the communications source;
in response to finding the start of the intermittent transmission, causing the receiver to enter a sleep mode;
while the receiver is in the sleep mode, indexing to the assigned message frame that is assigned to the vehicle locating unit; and
in response to indexing to the assigned message frame, causing the receiver to re-enter the wake mode and then processing the assigned message frame.
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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.
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Citations
16 Claims
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1. A system for power management of 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 system comprising:
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a processing device of the vehicle locating unit in communication with the receiver, the processing device for controlling a wake mode and a sleep mode of the receiver; and a memory of the vehicle locating unit in communication with the processing device, the 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 that is assigned to the vehicle locating unit; wherein the processing device is configured to perform the following; causing the receiver to enter a wake mode to find a start of an intermittent transmission from the communications source; in response to finding the start of the intermittent transmission, causing the receiver to enter a sleep mode; while the receiver is in the sleep mode, indexing to the assigned message frame that is assigned to the vehicle locating unit; and in response to indexing to the assigned message frame, causing the receiver to re-enter the wake mode and then processing the assigned message frame. - 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 an intermittent transmission from a communications source, wherein each intermittent transmission includes at least one assignable message frame, a processing device for controlling a wake mode and a sleep mode 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 that is assigned to the vehicle locating unit, the method comprising;
causing the receiver to enter a wake mode to find a start of an intermittent transmission from the communications source; in response to finding the start of the intermittent transmission, causing the receiver to enter a sleep mode; while the receiver is in the sleep mode, indexing to the assigned message frame that is assigned to the vehicle locating unit; and in response to indexing to the assigned message frame, causing the receiver to re-enter wake mode and then processing the assigned message frame. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
- 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 that is assigned to the vehicle locating unit, the method comprising;
Specification