SU1203565A1 - Device for transmission and reception of multilevel signals - Google Patents

Description

one

The invention relates to telecommunications, in particular, to the transmission of information in homogeneous computing structures, and can be used to construct data transfer mini networks based on multi-level schemes of a large degree of integration.

The aim of the invention is to increase the capacity of the device.

FIG. 1 shows a block diagram of the proposed deviceJ in FIG. 2 is a schematic diagram of a multi-level signal decoder; in FIG. 3 is a schematic diagram of the multi-level switch j in FIG. 4 is a block diagram of a mini-network, data transmission based on devices for transmitting and receiving multi-level signals.

A device for transmitting and receiving multi-level signals comprises FIG. linear blocks 1 and 2, made on decoder 3 and switches 4, source 5 reference currents, executed on a multi-collector transistor 6, sources 7 of base currents, made on multi-collector transistors 8 and 9, sources (information consumers 10, second and third lines 11 st zi and first line 12 communication.

The decoder 3 contains Gfig, 2} transistors 13-18.

Switch 4 contains (FIG. 3) transistors 19 and a wired memory block 20 including points 21 of programmable connections.

The data transfer mini-network (Fig. 4 contains transceiver nodes 22). The device operates as follows.

The information multilevel signal from the output of the source 10 of the transceiver node 22 is fed to the information input of the multi-level signal decoder 3 of the linear unit 1. The power inputs of the decoder 3 receive the power currents & output source 10 information. Consider an example, when the information signal is represented by a four-level code (0,1,2,3), the basic signals have the following values at the inputs of the decoder 3: 3 0.5 J 1.5 2.5. The transistor 13 performs the function of a four-level inversion, for example, a sequence of 0,1,2,3

035652

is converted to the sequence 3,2,1,0. The inverted signal on three buses goes to three transistors (threshold detectors) 14-16,

The thresholds are set from the power inputs and are equal to 0.5; 1.5 and 2.5, respectively. In the circuit of transistors 14-18, decoding occurs, i.e. four-level transform

) 0 signal to the unitary binary code, in which each value of the information signal from the set 0,1,2,3 corresponds to one of the four outputs of the decoder 3, the state of which is different from the state of the other three outputs. In this case, this output does not consume current, and the remaining three take the current from switch 4 input. Subsequently, only one transistor 19 out of four switch 4 will be open, and the other three injectors coming from the power inputs from the source 7 of the base currents select team ramie transistors 14-18 decoder 3.

Depending on the number of connected collectors of the open transistor 19 with the output of the wired memory block 20, specified by the number of points of the programmable connections 21 (0,1,2 or 3 points), a current is formed at the output of the switch 4 corresponding to one of the four

 values of a multi-valued signal- (0,1,2, or H). It should be noted that the values of the alphabet of information and basic signals produced by sources (consumers) 10

 The information of the transceiver nodes 22 is usually different due to the technological variation of the parameters of the components of the circuits manufactured on different crystals.

Thus, to any value of the information signal from the set 0,1,2,3 in the alphabet specified by the source (consumer) 10 of the transmitting linear unit 1, the total value from the set 0,1,2 set by the memory unit 20 becomes the alphabet formed in the source 7 base currents and given the 55th nominal value of the reference current from the source 5 reference currents. Next, a four-digit signal from the link line 12 is fed to the input of the receiving

thirty

3

unit 2, where signal transformations similar to those that occurred in transmitting unit 1 occur, with the only difference that the signal value in the alphabet specified by the reference signal is matched, according to information in memory block 20, the signal in the source alphabet ( consumer) 10 information reception scheme. As a result, the device transmits information signals from the output of the information source 10 of the transmitting multilevel circuit to the input of the consumer 10 information of the receiving multilevel circuit with double functional conversion, information about which is stored in memory blocks 20 of the universal multilevel linear blocks 1 and 2, from the alphabet of the transmitting circuit into the alphabet receiving circuit with an intermediate signal conversion in the alphabet of the source 5 reference currents. In the case of a large number of multilevel circuits, the device provides data transfer between all sources (consumers) 10, converting signals from alphabets to transfer

Upsch circuits into alphabets of receiving circuits with simultaneous execution of functional transformations defined by blocks 20 of memory of multilevel 5 linear blocks 1 and 2 Connections.

The presence of a source of 5 reference currents and sources of 7 base currents reduces the communication link frequency for the transmission of reference signals compared to 10 with a known device.

Building transmitting and receiving devices on the basis of a universal multi-level linear block reduces hardware costs for data exchange, because these blocks carry out functional signal conversion, which allows transferring part of the functional load of multi-level 20 circuits to them.

Thus, the proposed device requires only hardware-based costs for building a source of 5 reference currents and sources of 7 basic currents with a significant decrease in the number of communication lines, which is equal to an increase in the capacity of the device.

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Claims (2)

, 1. DEVICE FOR TRANSMISSION AND RECEIVING OF MULTI-LEVEL SIGNALS, containing on the transmitting side a linear block, the information input of which is connected to the information ** output of the information source, the output of the linear block of the transmitting side is connected to the input of the first communication line, on the receiving side there is a linear block and the source of the base currents, the outputs of the source of the base currents are connected to the corresponding first power inputs of the linear block, the information input and the output of the linear block of the receiving side are connected respectively to the output second communication line and the input of the information consumer, and a source of reference current, the first output is connected via a second communication link to the input base current source pri-. the dark side, characterized in that, in order to increase throughput, a third communication line is introduced into it and a source of base currents on the transmitting side, the first and second power inputs of the linear block of the transmitting side are connected respectively to the power source information outputs and the base source outputs currents, the input source of the base currents of the transmitting side is connected via the third communication line to the second output of the source of the reference currents, <d the second power inputs of the linear block of the receiving side are connected to the corresponding moves food information consumer. 2. The device pop. 1, characterized in that the linear block contains a decryptor and a switch connected in series, the decoder information input, the decoder and switch power inputs are respectively an information input, the first and second power inputs of the linear block, the output of the switch is the output of the linear block.