SU578912A3 - Method of centralized address communication with remote recorders - Google Patents

Description

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The invention relates to communication technology and can be used to obtain printed copies of messages transmitted over a communication channel, for example, via a telephone line.

A known method of centralized address communication with remote recorders is based on transmitting a signal to the recorders, containing the parcel, address and information part, supplying the operative power to the recorder to send the signal, identify the address, and print the detectors with the corresponding address. In this case, some kind of pulse modulation is applied to the entire cross-haired group as a whole l. However, with the known method, the power consumption by sending the signal is high.

The purpose of the invention is to reduce energy consumption by sending a signal.

To do this, according to the proposed method, a portion of the operational ms value is supplied to the recording device, sufficient for identifying the address, and then full operating power is supplied to the recording devices operating at a specific address, and some of the operating power is removed from

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recording devices that do not have full operational power, and the signal contains the address corresponding to only one recording device.

The method of centralized address communication with remote recorders is that a signal is transmitted to the recorders that contains a parcel, an address corresponding to only one recorder and an information part, and when the signal is sent to all recorders, a portion of the operational power is supplied for identification addresses, after lero, full power is supplied only to a correctly addressed recording device, and some of the operating power is removed from non-addressable devices, then characters are printed by printers corresponding to a specific address.

FIG. 1 shows a structural electrical circuit of the device for implementing a method of centralized address communication with remote recorders; in fig. 2 sign matrix of the transmitted signal. The device for implementing the proposed method includes an input terminal 1, a pulse shaper 2, a demodulator 3, a carrier detector 4, a synchronizer 5, a serial-parallel converter 6, a divider 7, a decoder 8, a storage register 9, a pen head amplifier section 10 11, drive motor 12, oplavel 13, direct current converter 14 brake mechanism 15, pen 16, pen carriage 17 attached to tape 18, transport mechanism 19, engine 20 with output shaft 21, transducer 22 and source m generality 23. An apparatus for implementing the proposed method works as follows. The transmitted information in the form of a sequential binary pattern representing the recorded character is received at the input terminal 1, and the formation is binary signals that are transmitted using frequency modulation of the carrier frequency, where one frequency corresponds to a mark or one in a binary code and a friend skip or null in binary code. In the proposed method, a sign matrix is used (Fig. 2), consisting of 35 elements placed in 7 lines Rj-Ry and five columns Q-Cs and representing the configuration in accordance with which each transmitted and recorded sign . Received information is received at input terminal 1 through pulse generator 2, a submodulator 3 and a carrier carrier 4 are fed. Demodulator 3 demodulates input information, produces a duplicate of the transmitted binary information in sequential form AND enters N groups of pulses, each group of pulses consisting of MC binary signals encoded to represent the mark in a matrix form. The output signal from demodulator 3 is fed through synchronizer 5, to the input of serial-parallel converter 6, divider 7 and decoder 8. Serial-parallel converter 6 is a shift register that converts information from serial to parallel form and to binary numbers representing a sign that is transmitted over seven parallel binary channels to cumulative register 9, which accumulates parallel information until demodulator 3 receives a full matrix column y. According to the signal of the divider 7, the information is transferred from the cumulative register 9 in parallel form to the block 10 of the feather head amplifiers. The information received by the decoder 8 is scanned to search for the address code for groups, nodes or all calls, and if the required address is obtained and the read synchronization code is decoded, the output of the decoder 8 triggers the power switching circuit 11, which delivers full power to the driving motor 12, 13, the transducer 14, printing out the characters. By this point in time, a minimum power is supplied to each printing device, and when properly set, the selected printing unit will switch to full power, the braking mechanism 15 is used to reset cumulative register 9 each time a codeword is received. If an appropriate address is taken, consisting of two or one eight-bit codes, depending on whether this address is the node or group address or the call address of all nodes, the main power source in the selected print node is turned on. Following the address codes, there is another series of initial synchronization codes to ensure the synchronization of the input data with the output signal of the divider 7. The switching on of the power source 23 to the printing unit is determined by the initial synchronization codes and the beginning of the line, which constitute the first two pulses of the normal printed line. After the selected node is addressed, the address line part is no longer transmitted, and the line part of the normal print is then transmitted until a complete message is received. A pen head amplifier unit 10 is connected to pens 16 mounted on a pen carriage 17 attached to a belt 18, which is driven by a transport mechanism 19 and an engine 20, the output shaft 21 of which drives a driving roller that drives the recording medium 22. The recording medium 22 is made in the form of electrostatic paper, capable of carrying electrostatic charges on its surface. The proposed method reduces energy consumption by sending a signal, because the information signal transmits a signal to supply power with the first level of its value to all recording means, and with the second level only to the selected recording device indicated at the predefined address