Multiplex communications – Pathfinding or routing
Reexamination Certificate
2005-08-31
2009-11-17
Moore, Jr., Michael J (Department: 2419)
Multiplex communications
Pathfinding or routing
C370S323000, C370S337000, C370S342000, C370S371000
Reexamination Certificate
active
07620031
ABSTRACT:
Time division multiplexed input signals (i.e., separated into time slots) are spread in each time slot with a destination code. This spreading is applied for destination identification as opposed to signal information modulation. Each spreading signal is associated with a particular destination for a particular time slot. These spread signals are then combined on a code division bus. Output signals for retransmission to the destinations are recovered from the bus by application of despreading codes. Each despread signal has a destination code which appears in its individual time slot. In a variant code division multiplexed signals are directed to a destination by use of time slot interchanger to achieve time division switching to route the CDMA multiplexed channels.
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AT&T Corp.
Moore, Jr. Michael J
Sweet Lonnie
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