US 4,070,545 AGranted

Multidirectional repeater

AssigneeHoneywell Inc.

InventorCharles George Diefenderfer

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Abstract

A communication system for repeating a data signal received on one input/output line onto one or more other input/output lines while inhibiting the data signal repetition on the input/output line having input data being received thereon. The first bit of the incoming data signal is detected to generate a control signal for a line selector latch. The line selector latch latches in response to the control signal with the appropriate incoming line identification stored therein. This stored line identification is used to control a multiplexer which selects the corresponding one of a plurality of input signal detectors connected to respective input-output lines to supply an input signal to a signal repeater. The stored line identification also generates an inhibit signal to inhibit operation of a line output driver associated with the input/output line on which the incoming data was detected. An output signal from the signal repeater and timing signals are applied to a signal shaping circuit to develop input signals for the line output drivers to repeat the data signal by all uninhibited line output drivers.

Claims3

Dependent claims

A communication system comprising

a plurality of input/output terminals,
a plurality of signal detectors, each of said detectors having an input connected to a respective one of said input/output terminals, and an output,
a leading bit detector connected to the outputs of all of said input signal detectors to produce an output signal representative of the start of an input signal thereto,
selector latch means connected to said input signal detectors and said leading bit detector and arranged to be controlled by an output signal from said leading bit detector means to develop an inhibit signal from the output signals of said input signal detectors representative of an input signal detected by said input signal detectors,
multiplexer means connected to said input signal detectors and to said selector latch means to select an output signal from one of said input signal detectors in response to an output signal from said selector latch means,
signal repeater means connected to said multiplexer means to produce an output signal corresponding to an output signal from an input signal detector selected by said multiplexer means and
a plurality of input/output line driver means each having an output connected to respective ones of said input/output lines and an input connected to said multiplexer means, said line driver means being connected to said selector latch to have said inhibit signals applied to respective ones of said line driver means to inhibit a line driver connected to the one of said input/output terminal receiving an input signal.

4 more elements

Dependencies are inferred from the claim text.