Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication
Reexamination Certificate
2005-04-19
2005-04-19
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Reexamination Certificate
active
06882907
ABSTRACT:
A tracking unit signal filter10for a vehicle, typically tractor/trailer combinations, having at least one signal input15-17for receiving a respective signal A, B or C indicative of a respective vehicle parameter eg. signal C for sensing tractor/trailer coupling, and processor means28operable to pass the signal C after a predetermined time delay TC, if said signal is stable, and which is also operable to maintain said stable signal C if the signal is interrupted for less than a predetermined time interval tc.
REFERENCES:
patent: 5728933 (1998-03-01), Schultz et al.
patent: 5739592 (1998-04-01), Rigsby et al.
patent: 5894473 (1999-04-01), Dent
patent: 6111768 (2000-08-01), Curtiss
Bure Rudolf A
Hutchings Philip
Beaulieu Yonel
Milliken Paul E
TMC Consultants LTD
Weber Ray L
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