SU1681395A2 - Data input device - Google Patents

Abstract

The invention relates to telegraphy. The purpose of the invention is to improve the accuracy of the transmission of telegraph information by eliminating accidental key presses. The information input device contains four formers 1-4 code combinations, three delay elements 5-7, three switches 8-10, control block 11, keys 12, 13, coding block 14. The goal is achieved by introducing the elements OR 15, 16, whose inputs connected to the additional outputs of the imaging unit 1, which serves to form, except for service, register combinations sent separately. 1 and.

Description

The invention relates to telegraphy, can be used in a data transmission apparatus, in computer technology, in information display systems, etc. and is an improvement on the invention by ed. St. No. 907842.

The purpose of the invention is to increase the accuracy of the transmission of telegraph information by eliminating accidental keystrokes of register keys.

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

The device contains a first, second, third, fourth formers 1-4 code combinations, first, second, third delay elements 5-7, first, second, third switches 8-10, control unit 11, keys 12, 13, encoding unit 14, first, second elements OR 15, 16. The control unit '11 comprises OR elements 17, 18, triggers 19, 20.

The device operates as follows.

When power is supplied, the control unit 11 is set to its initial state, in which signals that enable the operation of keys 12 and 13 appear on its two outputs. When the key combination generator 2 is pressed, the signal passes through key 12 and enters the first register input of the encoding unit 14, corresponding register combination of a digital. At the output of the device appears in the code MTK number 2 register combination of digital ”.

The information signal, passing the delay element 5, goes to the input of the switch

8. Depending on the combination of which character to transmit, put switch 8 in the lower or upper case position. 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 the code combination driver 2, passing through the key 12 and the OR element 15, 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 to the key 12, and the trigger 13 comes out from the trigger 13 permissive.

When the keys of the code combination generator 3 are pressed, the operation proceeds similarly, only the information signal through the delay element 6 arrives at the input of the switch 10 (OWERTY) and, depending on its position, enters the corresponding input of the encoding unit 14.

Thus, when the key of the shapers of 2 or 3 code combinations is pressed again, the digital register combination is not generated, but only the code combination is formed in accordance with the pressed key.

When you press the key of the shaper 4 of code combinations, the push signal, passing the key 13, will be fed to the input of switch 9 and, depending on its position (RUS or LAT), will appear on the corresponding register input of the encoding unit 14. The corresponding register combination is generated at the output of the device. The pressing signal, in addition, after passing the key 13 and the OR element 16, acts on the control unit 11 and sets it to a position in which the inhibit signal is sent to the key 13 from the output of the trigger 20, and the enable signal to the key 12 from the output of the trigger 19 . Therefore, the repeated pressing of the keys of the shaper 4 of the code combinations will also not cause the corresponding register combination to reappear at the device output. The information signal generated by pressing the key of the shaper 14 of the code combinations enters the input of the switch 10. Through the delay element 7, depending on the position of the switch 10 (the pressed corresponds to the Latin register, and the pressed one corresponds to the Russian one), a signal appears on one of its outputs, which falls on the desired input of the encoding unit 14. At the output of the device, thus, a code combination of information will be generated.

The code combination generator is used to generate, in addition to official, register combinations sent separately. The outputs of the former 1 are connected to the corresponding inputs of the coding unit 14, and the additional outputs of the former 1 are connected to the corresponding inputs of the elements OR 15, 16.

When you press on the shaper 1 code combinations, for example, the keys of the Russian or Latin registers, in addition to the signal that appears on the corresponding register input of the encoding unit 14, a signal simultaneously appears from the third or second output of the shaper 1 code combinations. One of these pressing signals after passing through the OR element 16 acts on the control unit 11, setting it in such a position that the inhibit signal is sent to the key 13 from the output of the trigger 20, and the enable signal is issued to the key 12. As a result, if the key of the shaper 3 or 2 code combinations is further pressed, this first leads to the operation of the key 12, the output signal of which ensures that the encoding unit 14 generates the corresponding register combination, and then the code combination of the character that is transmitted 10.

When you press on the shaper 1 code combinations the keys of the digital register, in addition to the signal that appears on the corresponding register input of the encoding unit 14, at the same time a signal appears on the first output of the shaper 1 code combinations. The pressing signal after passing through the OR element 15 acts on the control unit 11, setting it 20 in a position in which the enable signal will be sent to the key 13, and the inhibit signal to the key 12. As a result, if the key of the code combination generator 4 is further pressed, this leads first to the triggering of the key 13, the output signal of which provides the encoding unit 14 to generate the register combination RUS, and then the code combination of the symbol that is transmitted.

Thus, the possibility of transferring the letters of the Russian alphabet and numbers in the Russian register, as well as the letters of the Russian alphabet in the digital register, is excluded when the keys of the Russian or digital registers are accidentally pressed (accidentally) pressed.

Claims (1)

Claim A device for entering information by ed. St. No. 907842, characterized in that 15, in order to improve the accuracy of the transmission of telegraph information by eliminating accidental pressing of the register keys. two OR elements are introduced, the output of one key being connected to the first input of the control unit through the first OR element, the output of the other key being connected to the second control input through the second OR element, the first, second and third additional outputs of the first shaper of code combinations are connected respectively to the second input of the first OR element, the second and third inputs of the second OR element.