SU1361532A1 - Information input device - Google Patents

Abstract

The invention relates to automation and computing technology. The purpose of the invention is to expand the field of application of the device by combining the functions of the coordinate tablet and keyboard. The information input device comprises a rigid plate 1, four force-measuring sensors 2 of the coordinate plate, the first 3, the second 4 and the third 5 summing amplifiers, the first 6, the second 7 switches, the first 8 and second 9 pulse shapers, the first 10 and second 11 zero -organs, first 12, second 13 and third 30 triggers, first 14 and second 15 elements OR, first 16, second 17 and third 29 counters, first 18 and second 19 registers, first 20 and second 21 blocks comparator 23 pulses, first 27 , second 28, third 24, fourth 25 and fifth 26 elements I. The division of the device's functions by inputting the coordinates of the marker or codes of the keys pressed is determined by the time of tactile influence of the operator on the surface of the coding plate. 1 il. (L N)

Description

113

The invention relates to computer technology, is intended for use in computer terminal devices, and is an improvement of the invention according to the authors. Ev, No. 1136139.

The aim of the invention is to expand the field of application of the device for entering information by providing the possibility of entering alphanumeric information.

The device contains a rigid ppastina 1, four force-measuring sensors 2 of the coordinate plate, the first 3, the second 4 and the third 5 summing amplifiers, the first 6. and the second 7 switches, the first 8 and second 9 pulse shapers, the first 10 and the second 11 zero. organs, the first 12 and second 13 triggers, the first 14 and second 15 elements OR, the first 16 and second 17 counters, the first 18 and second 19 registers, the first 20 and second 21 comparison blocks, the pulse generator 22, the third driver 23 pulses, the third 24 , fourth 25, fifth 26, first 27 and second 28 elements And, also the score Chik 29 and the third trigger 30 (see drawing).

The device works as follows,.

In the initial state, when the plate 1 is not touched, the signals from the summing amplifiers are zero, which is achieved by the known methods of DC compensation. The potential from the output of the first comparison unit 20 through the first element AND 27 short-circuits the first inputs of the formers 8 and 9 pulses and closes the second element And 28, The potential of the comparison unit 21 is permitting for the first element And 27.

When plate 1 is pressed with minimum effort, which exceeds the trigger threshold of comparison unit 20, the signal from its output goes to the differentiating setting, inputs of additional counter 29 and trigger 30, sets them at the leading edge to zero state corresponding to input of discrete information, and also opens the first element AND 27. the signal of which, through the elements OR 14 and 15, enters the differentiating inputs of the flip-flops 12 and 13, sets them with the leading edge in the initial state, providing the connection 22

the second 4 and the third 5 summing amplifiers through the corresponding (analog) switches 6 and 7 to the second (integrating) inputs of the drivers 8 and 9 pulses. The signal from the output of the first element AND 27. entering the differential installation inputs of counters 16 and 17, sets them to the initial state. Simultaneously, the shorting potential is removed from the first inputs of both formers 8 and 9 pulses.

When the output voltage of the shaper of 8 or 9 pulses reaches zero, the null-organ 10 or 11 connected to it triggers. what opens the fourth 25 or fifth 26 element AND controlled by it and, accordingly, supplies the inhibitory potential to the third element AND 24, Through the open element AND 25 or AND 26, the counting pulses of the generator 22 are fed to the counting input of the corresponding

16 or 17. During time T, the counter adds N pulses, and then issues an overflow signal that the second flips the corresponding trigger 12 or 13, connecting

to the inverter input of the imager 8 or 9 pulses the output signal of the first summing amplifier 3, the counter 16 or 17 itself is set to the initial state. The output voltage of the corresponding imager 8 or 9 pulses starts to decrease, and the corresponding counter 16 or 17 is filled with pulses, starting from zero content.

At the moment of transition, the output voltage of the forcing 8 or 9 pulses has a zero value. the potentials from both null organs 10 and 11, element 24 is triggered, producing a signal at the end of the measurement cycle, which, having passed the third driver 23 pulses, goes to the second element 28,

In case the pressure on the plate is in the working range, the pulse of the end of the measurement cycle passes the second element And 28, rewriting

3

enters the contents of counters 16 and 17 in registers 18 and 19 and through the elements OR 14 and 15 sets counters

16 and 17 and the triggers 12 and 13 in the

condition. At the same time analog

switches 6 and 7 are again connected to the second inputs of drivers 8 and 9 pulses, the outputs of the corresponding second and third summing amplifiers 4 and 5. The measurement cycle repeats, the end of cycle signals go to the counting input of the third counter 29 and to the processing system, where the outputs of registers are also entered 18 and 19 and the outputs of the comparison blocks 20 and 21 (minimum and maximum), and the output of the third register 30. The signals from the comparison blocks 20 and 21 are used by the processing system and the operator to select individual points indicated by a marker, or lazy keystrokes when using the device as a keypad.

If the pressure on the plate reaches the limiting value, the corresponding block 20 or 21 of the comparison (minimum or maximum) is triggered, the first element AND 27 closes, which will cause the first inputs of the pulse shaper 8 and 9 to short and pulse the second element 28. Owing to the limits of the range of sensors 2 To one or the other side, it generates a signal informing the processing system of this, and the device is set to its original state, while maintaining the last correct register registers 18 and 19.

If the third counter 29 calculates a certain number of cycles, the total duration of which is less than the set limit, during the stay in the operating range of the contact force, the signal from the output of the third trigger 30 informs the processing system about the arrival of the information A.Zhenin Editor V. Bugrenkov Tekhred M. Didyk Proofreader V. But ha

6283/47

Circulation 671 Subscription

VNIIPI USSR State Committee

.on matters of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Lr production and printing company, Uzhgorod, st. Project, 4

5324,

key functions. If the total duration exceeds this limit, the signal from the overflow output of the third counter 29 will set the third trigger 30 to a state that informs the system about the arrival of the coordinates of the marker. The processing system, analyzing the control outputs of the device, can determine the purpose of the incoming information, its correctness, and inform the operator about this using sound signals or display signals.

In both cases of using the device to enter information, the width of the incoming codes does not change, so each key pressed corresponds to a certain range of output coordinate code values, according to which the processing system can determine the function of the key pressed.

Thus, the information input device combines the functionality of two devices: a keypad and a sensor and rectangular coordinates for remotely moving the marker around the display screen.

Claims (1)

Invention Formula Device for entering information n aut. St. No. 1136139, which is so that, in order to expand the scope of application by providing the possibility of entering alphanumeric information, a third trigger and a third counter are entered into the device, the counting input of which is connected to the output The second element And, the output of the first comparison unit is connected to the installation input of the third counter and one input of the third trigger, the other input of which is connected to the overflow output of the third counter and the output of the third trigger is an additional output of the device.