Method and apparatus for time synchronizing an in-vehicle...

Details Method and apparatus for time synchronizing an in-vehicle... Method and apparatus for time synchronizing an in-vehicle...

2007-12-18

2007-12-18

Pham, Chi (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S324000, C370S503000, C455S013200

Reexamination Certificate

active

10424644

ABSTRACT:
An independent, broadcast medium (32) is used to communicate an time reference to each element: switch element (36), active element (14-20) or passive element, of an in-vehicle network (30). Each element (36) in the network accepts the time information, i.e., a time reference from the source. The time reference is then used by each element (36) to adjust an internal clock of the element. Commands may then be sent to the elements to occur at a particular time.

REFERENCES:
patent: 5893044 (1999-04-01), King et al.
patent: 6449485 (2002-09-01), Anzil
patent: 6704547 (2004-03-01), Kuwahara et al.
patent: 6882912 (2005-04-01), DiLodovico et al.
patent: 7190946 (2007-03-01), Mazzara et al.
Elson et al., Fine-Grained Network Time Synchronization using Reference Broadcasts, May 17, 2002, University of California, Department of Computer Science, pp. 1-14.

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