Method to prevent excessive current drain of telematics unit...

Details Method to prevent excessive current drain of telematics unit... Method to prevent excessive current drain of telematics unit...

2011-08-16

2011-08-16

Tran, Khoi (Department: 3664)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

C701S002000, C701S035000

Reexamination Certificate

active

08000842

ABSTRACT:
The disclosed examples illustrate a system and method that prevent excessive current drain through the network access device (NAD) of a telematics unit and provide flexible discontinuous-receive management. Normally, when in a Standby State and where communication service is unavailable, the NAD may dissipate current at rate many times more than where communication service is available. A Standby Counter provides the length of the time interval for Standby State or the sleep cycle. Certain of the disclosed examples prevent excessive vehicle battery drain by operating the telematics unit in a first mode wherein a sleep cycle value of the telematics unit is above a first predetermined threshold, and if the communication service is available, operating the telematics unit in a second mode wherein a sleep cycle value is in a range from zero to the first predetermined threshold.

REFERENCES:
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patent: 6993351 (2006-01-01), Fraser et al.
patent: 7016771 (2006-03-01), Watkins et al.
patent: 7142810 (2006-11-01), Oesterling
patent: 2003/0185162 (2003-10-01), Fraser et al.
patent: 2004/0142659 (2004-07-01), Oesterling
patent: 2006/0047373 (2006-03-01), Sumcad et al.
patent: 2006/0241817 (2006-10-01), Patenaude
patent: 2009/0088910 (2009-04-01), Yi et al.

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