RU2029988C1 - Digital information input device - Google Patents

Abstract

FIELD: electric communications. SUBSTANCE: device has input unit 1, code converter 2, shift registers 3,4,5, first pulse generator 6, first AND gate 7, second pulse generator 8, third pulse generator 9, second AND gate 10, third AND gate 11. EFFECT: enlarged functional capabilities due to provision for start-stop and continuous message reception. 1 dwg

Description

 The invention relates to telecommunications and can be used in communication systems, data transmission and data input.

 The aim of the invention is to expand the functionality of the device by providing work in start-stop and continuous mode of receiving messages.

 The drawing shows a structural diagram of the device.

 The device comprises an input unit 1, a code converter 2, a first 3, a second 4 and a third 5 shift registers, a first 6 pulse generator, a first 7 AND element, a second 8 and a third 9 pulse generators, a second 10 and a third 11 I. elements

 The device operates as follows.

The signal 2 ^{n of the} position code is supplied from the communication channel to the input of the input unit 1. From the output of the input unit 1, the signal 2 ^{n of the} position code is supplied to the input of the code converter 2. The code converter 2 converts the signals 2 ^{n of the} position code into n signals of the two-position code and outputs them to the input signals of the serial code signals of the respective registers 3-5 shift and the second inputs of the corresponding elements And 7, 10 and 11.

 In the initial state, preceding the cycle of receiving information, units are recorded in the lower ranks of registers 3-5. Due to this, high potential signals are sent to the first inputs of the elements And 7, 10 and 11 from the direct outputs of the lower bits of the registers, and low potential signals are sent to the inputs of the generators 6, 8, 9 pulses from the inverse outputs of the lower bits of the registers. The information inputs of registers 3-5 shift and the second inputs of the elements And 7, 10 and 11 from the corresponding outputs of the Converter 2 code receives signals of high potential.

 With the arrival of the “start” signal (code sending of the zero level), the zero potential is established at the second input of the And 7 (10, 11) element, which causes a low potential to be established at the output of the And 7 (10, 11) element connected to the control input of the register 3 ( 4, 5) shear. Switching the signal from high to low at the control input of register 3 (4, 5) provides a record in the last code combination "100 ... 0", i.e. one is written to the high order of register 3 (4, 5), and zeros to the other places. At the same time, a high potential is set at the inverse output of the least significant bit of register 3 (4, 5), which starts the pulse generator 6 (8, 9). From the output of the generator 6 (8, 9), the pulses arrive at the clock input of the shift register 3 (4, 5). In register 3 (4, 5) is written the code combination of the received signal. After writing to the register 3 (4, 5) the signals of binary information bits of the received code combination, the unit appears in the low-order bit of register 3 (4, 5), which was written to the high order at the beginning of the reception cycle. Writing a unit to the least significant bit of register 3 (4, 5) ensures that the generator 6 (8, 9) is turned off and the And 7 (10, 11) element is ready for the start signal at the beginning of a new reception cycle.

 The appearance of a high potential at the direct output of the least significant bit of register 3 (4, 5) ensures the input of the received binary information bits of the messages into the devices associated with the outputs of registers 3 (4, 5).

 With the arrival of the element And 7 (10, 11) to the second input of the new starting package, the cycle of receiving messages is repeated.

 The number of shift registers included in the device is determined in accordance with the positionality of the code of the received message.

Claims (1)

 A DISCRETE INFORMATION DEVICE comprising an input unit, a code converter, first, second and third shift registers, a first pulse generator, a first AND element, wherein the input of the input block is the information input of the device, the output of the input block is connected to the input of the code converter, the outputs of which connected respectively to the information inputs of the shift registers, the outputs of which are the information outputs of the device, the single output of the least significant bit of the first shift register is connected to the first input of the first element And, the output of which is connected to the control input of the first shift register, the clock input of which is connected to the output of the first pulse generator, the input of which is connected to the zero output of the least significant bit of the first shift register, characterized in that, in order to expand the functionality of the device beyond the account of ensuring work in the start-stop and continuous mode of receiving messages, the second and third pulse generators, the second and third elements And, the first inputs of which are connected single outputs of the least significant bits of the corresponding shift registers, the zero outputs of the least significant bits of which are connected to the inputs of the corresponding pulse generators, the outputs of which are connected to the clock inputs of the corresponding shift registers, the second inputs of the first, second and third elements And are connected to the corresponding outputs of the code converter, the outputs of the second and third And elements are connected to the control inputs of the corresponding shift registers.