Patent
1978-05-01
1979-07-10
Brown, Thomas W.
H04J 302
Patent
active
041608763
ABSTRACT:
Modular multiplex/demultiplex apparatus suitable for use in a telephone communication system for processing data transmitted between local and remote telephone subscribers. The multiplex/demultiplex apparatus comprises a plurality of module units which may be interconnected together, for example, in one or more groups, for processing and routing data originating with local subscriber equipment to selected ones of a plurality of trunk group modules and associated modems for transmission to remote subscriber equipment, and for processing and routing data received by the trunk group modules and modems from remote subscriber equipment. Each module unit includes a shift register having a plurality of demultiplex input lines for receiving demultiplexed data thereon and a series input for receiving multiplexed data. Data present on the demultiplex input lines or at the series input is shifted to an output of the shift register. The module unit further includes a plurality of multiplex output lines and associated gates connected to the multiplex output lines and in common to the output of the shift register. One of the multiplex output lines represents a module interconnection line and is connected to the series input of the shift register of an adjacent module unit. Data shifted to the output of the shift register is selectively gated through one of the gates to either the multiplex output line connected to the series input of the shift register of the adjacent module unit or to one of the other multiplex output lines to an associated trunk group module and modem.
REFERENCES:
patent: 3637941 (1972-01-01), Rekiere
patent: 4071701 (1978-01-01), Leijonhufvud et al.
patent: 4092497 (1978-05-01), Laneau
Bojanek Robert J.
Mason Marvin S.
Brown Thomas W.
GTE Sylvania Incorporated
Xiarhos Peter
LandOfFree
Modular multiplex/demultiplex apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modular multiplex/demultiplex apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modular multiplex/demultiplex apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-739727