SU559401A1 - Device for determining loss of confidence in the transmission of digital information over a communication line - Google Patents

Description

one

The invention relates to radio engineering and can be used to measure the loss of confidence.

A device containing registers is known.

shift, the first outputs of which are connected to the first input of the frequency divider by three through serially connected first half-adder and second half-adder connected to the input of the shift register l.

However, the known device is characterized by low measurement accuracy.

The purpose of the invention is to improve the accuracy of determining the loss of reliability.

For this, the proposed device introduces a clock divider for two, the first and second OR elements and an inverter, while the second outputs of the shift register through the first element OR connected in series, the clock divider by two are connected to the first input of the second element OR, to another which is connected to the output of the first element OR through successively connecting .ep1 and frequency divider by three.

In the drawing, this is a structural electrical circuit diagram of a device for determining the loss of reliability in transmitting digital information over a communication link.

The device contains pieces of penicTp 1 shift, the first outputs of which are connected to the first {divider 2 input in three frequencies by three lines; the first half-adder 3 and the second half-adder 4 connected to the input of the register 1, the divider 5 clock frequency by two, first and second ON {6s 7 and inverter 8, while the second outputs of register 1 are connected via successively connected electrons 6 and divider 5 to the first input of the second element OR 7, to the other input of which the output of the first element OR 6 is connected Indenter inverter 8 and divider 2.

The device operates as followsIM.

The input binary signal in parallel arrives at the input of the register J and at the passage of the second half-sound mathorp -1, clock pulses arrive in parallel to the hollows of the peniCTtui triggers and r-.xo / i del-Fri -.h J

ё. in the presence of at least one unit in the input signal during the n cycles, rae.fi is the number of triggers of register 1, divisor 5 will be reset to the output potential of the first element OR 6. If the input signal is, the error signal goes to the input of the second element OR 7 s output divider 2. In the absence of an input 1-signal (when the connection is interrupted). all triggers of register 1 are in zero position and have changed their logical state. The output potential of the first element OR 6 enables the divider 5 to work and, through an inverter 8, zero divider 2. In this case In addition, at the output of the second element OR 7, there is a signal like a square wave with a frequency two times less than the clock one, which is equivalent to an error signal with a probability of 0.5.

Claims (1)

Invention Formula An apparatus for determining the loss of confidence in the transmission of digital information over a communication line, comprising a register shift, the first outputs of which are connected to the first input of the frequency divider by three through serially connected first half-adder and second half-adder, connected to the input of the shift register, characterized in that, in order to improve the accuracy of determining the loss of reliability, the clock divider by two, first and the second OR elements and the inverter, while the second outputs of the shift register through the first OR element connected in series, the clock divider by two is connected to the first input of the second IL element And, to the other input of which the output of the first element OR is connected through a series-connected inverter and a frequency divider by three. Sources of information taken into account in the examination: l.D.G-BiecmoniTi and T. A-Gravesi Peeudo-RoTidoTn-be uence Binospv Dig-it QeTiepatofs o-nd Error Detectops Post Office Eeectnc Enp-. 3opTioie (QTi M4, p-245-249 (prototype)