Multiplex communications – Wide area network – Packet switching
Patent
1989-06-22
1990-12-04
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 306
Patent
active
049759116
ABSTRACT:
The circuit of the present invention provides a signal which allows data to be transferred between a first synchronous system to a second synchronous system. Where the first system is a Time-Division-Multiplexing (TDM) system and the second system is a Microprocessor system. The transfer is allowed after three or four memory cycles of the Microprocessor system after receiving the end of time slot signal. This invention requires that the Microprocessor system access the Time-Division-Multiplexed system as an Input/Output (I/O) device.
REFERENCES:
patent: 4717914 (1988-01-01), Scott
patent: 4797574 (1989-01-01), Okubo et al.
AG Communication Systems Corporation
Baca Anthony J.
Marcelo Melvin
Olms Douglas W.
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