SU1555894A2 - Device for synchronization of code sequence - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to increase the number of transmitted information signals. The device contains a decoder 1, electr OR 2, shaper 3 clock pulses, r-4 clock pulses, shift register 5 with feedback, consisting of register 6, group of output keys 7 and adder 8 modulo two, as well as a switch 9, a switch 10, a controllable inverter 11, and a controllable frequency divider 12. The decoder 1 receives the input signal in a parallel form. For each premise, at one of the outputs of the decoder 1, a signal appears that goes to register 5, generating different M-sequences. Signals from decoder 1 are also sent to switch 10 and via e-OR OR 2 to shaper 3, which starts G-4. The frequency of clock pulses is divided in divider 12 with a division factor that depends on the value of the input burst. This changes the number of bursts in the generated M-sequence. The inverter 11, which is controlled by the switch 10, allows changing the M-sequence being formed to inverse with certain input sequences. 1 il.

Description

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The invention relates to telecommunications and is an improvement of the invention according to aut. No. 1246399.

The purpose of the invention is to increase the number of transmitted information signals.

The drawing shows the structural electrical circuit of the device for transmitting discrete information.

The device contains a decoder 1, the element OR 2, the driver 3 clock pulses, the generator 4 clock pulses, the shift register 5 feedback, including register 6, output keys 7 and the adder 8 modulo two and switch 9, and inverter 1 1 and controlled frequency divider 12.

A device for transmitting discrete information works as follows.

The inputs of the decoder 1 are received

sending the input signal in parallel form. For each parcel, at one of the outputs of the decoder, there is a signal that opens, using switch 9, a certain group of output keys 7 of the shift register 5 with feedback. Due to this, the outputs of the corresponding bits of the register 6 are connected to the inputs of the modulator 8 modulo-2 and, thus, by changing the feedbacks in the register

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4 clock pulse, thereby synchronizing the information source with the 4 clock pulse generator. The clock pulses are divided by a controlled frequency divider 12, the division factor of which depends on the value of the input dressing. At the same time, the number of parcels in the formed M-sequence changes. Controlled by the inverter 11 by a signal from a separate output of the switch 10 allows for certain input signals to change the generated M-sequence to inverse.

Thus, due to the introduction of new units, the number of transmitted parcels increases by more than an order of magnitude compared to the known.

Claims (1)

Invention Formula A device for transmitting discrete information according to bus No. 1246399, characterized in that, in order to increase the number of information signals transmitted, a switch, a controllable inverter and a controllable frequency divider are introduced, through which the output of the clock generator is connected to the clock input of the shift register feedback, with the corresponding outputs of the decoder connected to the inputs of the switch, the first and second outputs 5 feedback shifts, the outputs of which 5 are connected respectively Different M-sequences are available. In addition, the signals from the outputs of the decoder 1 are fed to the inputs of the switch -10 and through the element OR 2 to the input of the imaging unit 3 sync pulses. A signal from the output of the sync generator 3 starts the generation five 0 0 4 clock pulse, thereby synchronizing the information source with the 4 clock pulse generator. The clock pulses are divided by a controlled frequency divider 12, the division factor of which depends on the value of the input dressing. At the same time, the number of parcels in the formed M-sequence changes. Controlled by the inverter 11 by a signal from a separate output of the switch 10 allows, with certain input signals, to change the generated M-sequence to the inverse one. Thus, due to the introduction of new units, the number of transmitted parcels increases by more than an order of magnitude compared to the known. Invention Formula A device for transmitting discrete information according to bus No. 1246399, characterized in that, in order to increase the number of information signals transmitted, a switch, a controllable inverter and a controllable frequency divider are introduced, through which the output of the clock generator is connected to the clock input of the shift register feedback, with the corresponding outputs of the decoder connected to the inputs of the switch, the first and second outputs 5 dicks of which are connected respectively with the control inputs of the controlled frequency divider and the control input of the controlled inverter, the signal input of which is connected to the output of the feedback shift register, and the output of the controlled inverter is the output of the device.