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(11)    Patent No :    AP 2140   
(21)    Application No :    AP/P/2007/004269   
(22)    Filing Date :    17.05.2006   
(24)    Date of Grant &    06.08.2010   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
US    11/131,847    18.05.2005

(84)    Designated State

BW    GM    GH    KE    LS    MW  MZ   NA   SL
SD    SZ    T Z    UG    ZM    ZW

(73) Applicant(s)

LOJACK OPERATING COMPANY, LP, 200 Lowder Brook

Drive, Westwood, MA 02090,
United States of America

(72) Inventors

ROMANO Frank, United States of America

KRISHNA Sampath, United States of America

NGUYEN Son, United States of America

et al

(74) Representative

COGHLAN, WELSH & GUEST

ZIMBABWE
 

(51)  International  Classification   H04B1/16 (2006.01)    H04B1/38 (2006.01)
H04M1/00 (2006.01)   


(54)    Title

A vehicle locating unit with improved power management method

(57)    Abstract

A vehicle locating unit with improved power management. A receiver receives a signal from a network of communication sources. A signal strength monitoring subsystem determines which of the communication sources are transmitting the strongest signals. A power management subsystem is responsive to the signal strength monitoring subsystem and is configured to alternatively enter sleep and wake-up modes, synchronize the wake -up mode to the communication source transmitting the strongest signal, and test the signal strength of at least one additional communication source according to a

(56)    Documents Cited :    US 2006/0194549 A    US 2005/0258806 A

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