Multiplex communications – Communication over free space – Combining or distributing information via time channels
Reexamination Certificate
2006-04-06
2009-12-22
Rao, Seema S (Department: 2462)
Multiplex communications
Communication over free space
Combining or distributing information via time channels
C713S400000, C370S503000
Reexamination Certificate
active
07636345
ABSTRACT:
A novel and useful apparatus for and method of communicating time related messages between multiple devices wherein each device operates using a different time base. The invention can be applied to multi-mode cellular handsets that implement multiple radio access technologies (RATs). Messages communicated between the RATs are time synchronized using a common time base that is shared among all the RATs in the system. The creation of the shared time base is based on an interrupt signal referred to as a “sync event”. The interrupt signal is generated by at least one of the devices and received by all the other devices. The local time is stored in a snapshot register and is used by each respective device as the basis to perform conversions between local and common time, common time being the time base that is shared by all the devices in the system. This ‘synchronizes’ the devices since they all took a snapshot of their respective local timers at substantially the same time.
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Eyal Elad
Segal Oran
Comsys Communication & Signal Processing Ltd.
Rao Seema S
Russell Wanda Z
Zaretsky Howard
Zaretsky Patent Group PC
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