SU843285A1 - Digital information transmitting and receiving device - Google Patents

Description

(54) DEVICE FOR TRANSMITTING AND RECEIVING DIGITAL INFORMATION

units, which includes a generator of 1 clock pulses. The clock signals arriving at the inputs of the exchange register 2 begin to shift information in it to the output of the code value. Considering that at the receiver the diode 7 is closed, the logical state at the output of the exchange register 2 is transmitted through the element 6, the diode 7 to the input of the register 2 exchange and to the wire 14 of the code value. Each clock signal shifts the information in the exchange register 2 by one bit of the ring. The shift occurs until the 3 clock tick on the counter is not in accordance with the transfer termination code. According to this code, the decoder 4 and the inverter 5 through the diode 8 are installed on the control wire 13 and the input of the clock generator 1 a logic level zero. Clock generator 1 is turned off. The transfer is over. In the exchange register 2, the information that was before transmission is set.

In receive mode, the device operates as follows.

The potential of the level of logical zero at pin 9 determines the readiness of the device to begin receiving information. According to this ready signal, the external device of the receiver sets the potential of logical zero at pin 10, sets the counter of 3 ticks through a group of pins 12 to the initial state. At the output of the inverter 5, a logic unit level is set. If the transmitter is ready to transmit information, then the level of the logical unit is set on the control wire 13, which turns on the generator of 1 clock pulses. The clock signals begin to shift information into the exchange register 2 from the input of code values. The shift occurs until the 3-clock counter on the counter has a reception end code. According to this code, the decoder 4 and the inverter 5 through the diode 8 are installed on the control wire 13 and the input of the clock generator 1 logic level zero. I clock generator is turned off. Reception is over. Register 2 of the transmitter is set in the receiver exchange register 2.

The exchange of information may involve several devices connected to a two-wire communication line; in this case, only one device transmits information, and all others accept it.

Each device can have its own number of received information bits on output 12. In this case, the clock pulse generator 1 is turned off by the smallest number. The logical zero level at pin 15 of this device in the event of a clock pulse 1 disconnecting indicates that the transmission or reception of information has been completed on the initiative of another device. The discipline of information exchange must be set prior to the beginning of reception or transmission, or set by a part of the transmitted code.

Thus, the proposed device can serve as both a receiver and a transmitter of information, which extends its functionality in comparison with the known one.

Claims (1)

Invention Formula A device for transmitting and receiving digital information, comprising a serially connected clock, a counter, a decoder and an inverter, as well as an exchange register connected to the output of the clock generator, so that, in order to provide two, third-party information transfer via one communication line, two diodes and an I element are entered, the input of which is connected to the output of the exchange register, and the output is connected via the first diode to another input of the exchange register, and the output of the inverter is connected to the input output clock generator. Sources of information taken into account in the examination I. USSR Copyright Certificate No. 613516, cl. And 04 L25 / 40, 1976 (prototype). / V -in-0-o- oo- ©