JPS59211345A - Time division shared transmitter - Google Patents

Abstract

PURPOSE:To economize the cables connecting a multiplexer and a demultiplexer into two wires by providing another counter further to the demultiplexer of a time division shared transmitter. CONSTITUTION:A pulse of an oscillator 1 is inputted to counters 2 and 5. The counter 2 counts an output pulse outputted from the oscillator 1 and outputs any of 64 kinds of binary codes from 0-63 as an output selecting signal. The signal is inputted to a multiplexer 3, which selects only one point of input signal In designated by a binary code (n) among input signals I0, I1,...I63. Further, the pulse of the oscillator 1 is inputted also to the counter 25 and a binary code is outputted similarly. The demultiplexer 4 transmits an output signal On corresponding to the number (n) the same as that of the input signal In among many input signals I0, I1,...I3 connected to the multiplexer 3 by an output selecting signal of the counter 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for converting a multiplexer into a demultiplexer.
The present invention relates to a time division shared transmission device for transmitting signals.

A conventional device of this type is shown in FIG. 1
is an oscillator that generates pulses, 2 is a counter that counts the pulses of oscillator 1 and outputs a binary code, and 3 is an input signal In of number n indicated by the binary code of counter 2.
A large number of input signals I. .

■□...I63η) A multiplexer 4 selects, takes out, and transmits the female power signal In transmitted from the multiplexer 3 to a large number of output signals 0°, 0□...06... f'Lk number n number direction signal indicated by counter 2 from inside
As a send-out lower demultiplexer.

The operation will be briefly explained. For example, one person's output terminal is O
The case where there are 64 points at 63'F will be explained.

Oscillator 1 generates pulses. Counter 2
, and outputs a binary code from 0 to 63 as an output signal. This signal is input to the multiplexer 3, and from the 64 input points, only one input signal with the number specified by the binary code is selected and transmitted to the demultiplexer 4. The output signal of the counter 2 is also input to the demultiplexer 4 at the same time. The demultiplexer 4 receives the output signals from the multiplexers 3 and outputs only the output signal corresponding to the number indicated by the binary code of the counter 2.

Since the conventional transmission device is configured as described above, it is necessary to run 5 cables from the counter 2 to the remote demultiplexer 41, which is expensive. There was a drawback. Particularly when the multiplexer 3 and demultiplexer 4 are housed on separate printed circuit boards or in separate housings, multiple connectors are required to accommodate this large number of cables, which also has the drawback of being extremely uneconomical. had.

This invention was made to eliminate the drawbacks of the conventional methods described above, and aims to provide a time division shared transmission device that can save cables by installing a counter on the demultiplexer side. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS A time division shared transmission apparatus according to an embodiment of the present invention will be described below with reference to the drawings. In the second prisoner.

1 is an oscillator, 2 is a counter that counts the pulses of the oscillator 1 and outputs a binary code, and 3 is a multiplexer that takes out only the input signal In of number n indicated by the binary code of the counter 2 and transmits it.

5 is a counter that functions similarly to counter 2; 4 is a counter 5 which receives the human input signal In sent from the multiplexer 3;
This is a demultiplexer that sends to the terminal of the 8-power signal On with the number n indicated by the binary code.

I will briefly describe the movements of an actual dance example with this structure.

``First, oscillator 1 generates and outputs a pulse.

The output pulses of the oscillator 1 are input to a counter 2 and a counter 5. The counter 2 counts the output pulses output from the oscillator 1, and outputs the output of 64 types of binary codes at θ to 631) as a cutting edge selection signal. It is input to multiplexer 3, which has 64 points of input signal processing. ,I□
,...16. Only one point of the input signal In designated by the binary code n is selected and transmitted. The pulse of oscillator 1 is 1.

It is also input to the counter 5, and similarly outputs a binary code.

The demultiplexer 4 receives a number of input signals l connected to the multiplexer 3 by the output selection signal of the counter 5.

+11...Same number n from I63 as the human signal In
The output signal corresponding to the output signal is ON.

As described above, according to the time division shared transmission device of the present invention, since another individual counter is installed on the demultiplexer side, only two cables are needed to connect the multiplexer side and the demultiplexer side. It has the effect of being inexpensive.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional transmission device. FIG. 2 is a block diagram showing a time division shared transmission apparatus according to an embodiment of the present invention. 1... Oscillator, 2... Counter, 3... Multiplexer, 4... Demultiplexer, 5... Counter. In addition, the same reference numerals indicate the same parts in the figures. Agent Masuo Oiwa

Claims (1)

[Claims] A counter is provided for counting the cutting pulses of the oscillator force,
In a time division shared transmission device that transmits a signal selected from a plurality of signals via a multiplexer and a demultiplexer based on the output selection signal of the counter η), the counter is arranged corresponding to the multiplexer and demultiplexer, respectively. the first and second counters. A time division shared transmission device characterized in that the blade pulses of the oscillator are simultaneously supplied to the first and second counters.