RU1790012C - Device for input of information - Google Patents

Abstract

The device contains: 4 blocks for generating code combinations (1, 2, 3, 4), 3 delay blocks (5, 6, 7), 3 switches (8, 9, 10), 1 control unit (11), 2 keys (12 , 13), 1 coding block (14), 2 elements OR

Description

ate

with

Yu

The invention relates to telegraphy.

The purpose of the invention is to increase the accuracy of information input.

The drawing shows a structural electrical diagram of the proposed device.

The device comprises first 1, third 2, fourth 3, second 4 blocks for generating code combinations, second 5, third 6, first 7 delay blocks, third 8, first 9, second 10 switches, control unit 11, 12 first 13 keys, encoding block f4, second, first elements ILY 1§, l6, valve 17, prohibition block

18. Block 1 of the stage consists of triggers

19. 20, OR elements 21, 22. The first switch 9 consists of a block 23 for forming the elements AND 24, 25.

The device operates as follows ..

When the power is supplied, the control unit 11 is set to its initial state, in which of its two outputs appear signals enabling the keys 12 and 13 to work. When you press the key of block 2, the press signal, passing through key 12, enters the first register water of the coding block 14, the corresponding register combination of the digital. A digital combination appears in the MGK-2 code of the register at the output of the device.

The information signal, passed the delay unit 5, goes to the input of the switch 8.

8, depending on the combination of which symbol you want to transmit, turn switch 8 to lower or upper case. Thus, the information signal from the first or second output of the switch 8 goes to the corresponding input of the encoding unit 14. After some time (10 µs) after the first register combination appears at the output of the device, the code combination of the symbol that is transmitted is established.

The signal generated by block 2, passed through the key 12 and the OR element 16, in addition, sets the control unit 11 to the position in which the inhibit signal is supplied from the trigger 19 of the block 11, and the enable signal is sent to the key 13 from the output of the trigger 20. When transferring text in Russian register, the switch

9 is set to a position in which a single signal from the output of block 23 is supplied to the input of AND element 25, and a zero signal is sent to the control inputs of valve 17 and block 18. Therefore, when the keys of block 3 are pressed, the operation proceeds similarly, only the information signal through the second block 6 and the open inhibit block 18 comes to the input of the switch 10 and, depending on its position, goes to the corresponding input of the encoding block 14, and the press signal through the valve 17 is fed to key input 12. When the keys of the blocks 2 or 3 of the register are pressed again, no DIGITAL combination is generated, but only one or another code combination is generated in accordance with the pressed key. When the keys of block 4 are pressed, the press signal, having passed the key 13, is input to the switch 9 installed in the RUS position and then appears at the corresponding register input of the coding block 14. As a result, the combination RUS is formed at the output of the register device. The press signal, in addition, after passing the key 13 and the OR element 16, acts on the control unit 11 and sets it in such a position that the inhibit signal will be sent to the key 13 from the output of the trigger 20, and to the key 12 from the output of the trigger 19 - destructive. Therefore, the repeated pressing of the keys of block 4 also will not cause the register combination RUS to appear again at the output of the device.

The information signal generated by pressing the key of block 4 is input to the switch 10 through block 7 delay. Depending on the position of switch 10 (depressed corresponds to the Latin register, and depressed corresponds to the Russian one), a signal is transmitted at one of its outputs, which enters the corresponding input of coding unit 14. At the device output, a code combination of information will be generated in this way.

When transmitting text in the Latin register, the switch 9 is set to a position in which a single signal from the output of block 23 is applied to the inputs of the element And 24, valve 17 and block 18. Therefore, when you press the keys of blocks 2 or 4, the operation of the device occurs similarly to the above. However, if one of the keys of unit 3 is accidentally pressed during operation, the press signal and information are not sent respectively to the inputs of key 12 and switch 10, since valve 17 and prohibition unit 18 are closed. As a result, the possibility of pressing signals and information on the coding unit 14 and, consequently, the formation of corresponding code combinations is excluded.

Claims (1)

The claims An information input device comprising a first code combination generating unit, the first, second, third and fourth outputs of which are connected to the first, second, third and fourth inputs of the encoding unit, the fifth and sixth outputs of the first code combination forming unit are connected to the first and second inputs the first element AND, the third input of which and the first input of the first switch are connected to the output of the first key, the first and second inputs of which are connected respectively to the first outputs of the control unit and the second the window for generating code combinations, the second output of which is connected through the first delay block to the input of the second switch, the first and second outputs of which are connected respectively to the fifth and sixth inputs of the coding block, the output of the first OR element is connected to the first input of the control block, the second input of which is the input of the device, and the third input and second output are connected respectively to the output of the second OR element and the first input of the second key, the second input of which is connected to the first output third 5 0 5 0 of its block for generating code combinations, the second output of which through the second delay block is connected to the input of the third switch, the first and second outputs of which are connected to the seventh and eighth inputs of the coding block, the first and second outputs of the first switch are connected respectively to the second and third inputs of the coding block, the fourth the output of the first block of formation of code combinations and the output of the second key are connected to the first input of the second OR element, the second input of which is connected to the seventh output of the first block the combination of code combinations, as well as the fourth block for generating code combinations, the first output of which is connected to the input of the third delay unit, characterized in that, in order to improve the accuracy of information input, a valve and a block are introduced, the third output of the first switch connected to the first valve inputs and a block of prohibition, the second inputs of which are connected, respectively, with the second output of the block forming the code combinations and the output of the third delay unit, the valve output is connected to the second input of the second key, and the output of the prohibition block is with the input of the second switch.