SU881721A1

SU881721A1 - Information input device

Info

Publication number: SU881721A1
Application number: SU802872781A
Authority: SU
Inventors: Лев Лазаревич Утяков; Борис Яковлевич Розман
Original assignee: Институт Океанологии Им. П.П.Ширшова Ан Ссср
Priority date: 1980-01-23
Filing date: 1980-01-23
Publication date: 1981-11-15

Description

1one

Изобретение относитс к-радиоэлектронике и предназначено дл использовани в устройствах автоматики, телемеханики и вычислительной техники дл ввода информации с клавишного пульта.The invention relates to electronics and is intended for use in automation devices, telemechanics and computer technology for inputting information from a keypad.

Известно устройство ввода информации , содержащее клавиатуру и блок управлени tlj .A device for inputting information is known, comprising a keyboard and a control unit tlj.

Недостатком этого устройства вл етс большое число линий св зи клавиатуры с блоком управлени , что снижает надежность устройства, особенно дл пультов с большим количеством клавиш.A disadvantage of this device is the large number of keyboard communication lines with the control unit, which reduces the reliability of the device, especially for consoles with a large number of keys.

Наиболее близким к изобретению вл етс устройство ввода информации, содержащее объемную матричную клавиатуру , счетчик, первый коммутатор, дешифратор, блок фиксации кода 2.Closest to the invention is an information input device comprising a volume matrix keyboard, a counter, a first switch, a descrambler, a code fixing unit 2.

Цель изобретени - повышение надежности устройства.The purpose of the invention is to increase the reliability of the device.

Указанна цель достигаетс тем, что в устройство введен второй коммутатор и элемент И, выход которого соединен со входом блока фиксации кода , выходы третьей группы счетчика соединены со входами первой группы второго коммутатора, выход которого соединен с первым входом элемента И, второй вход которого соединен с выходом первого коммутатора, треть группа координатных шин клавиатуры соединена со входами второй группы второго коммутатора.This goal is achieved by introducing a second switch and an element I, the output of which is connected to the input of the code fixing unit, the outputs of the third group of the counter are connected to the inputs of the first group of the second switch, the output of which is connected to the first input of the element And, the second input of which is connected to the output of the first switch, a third group of keyboard coordinate buses connected to the inputs of the second group of the second switch.

На чертеже изображена функциональна схема устройства дл ввода информации .The drawing shows a functional diagram of the device for entering information.

Claims

The device for entering information contains a volumetric matrix of the keyboard 1, the first switch 2, the counter 3, the decoder 4, the fixing unit code 5, the block of output elements 6, the read bus 7, the clock 8, the back bus 9, the outputs 10 of the counter, the read bus 11, the counter input 12, the trigger 13, the second commutator 14, element 15, the communication bus 16, the outputs 17 and 18 of the first and second switches, the first, second and third groups of coordinate tires 19-21, the device works as follows in a way. The clock pulses come to the input 12 of the counter 3 via the clocking bus 8 via the block of fixation code 5. The decoder 4 decrypts the state of the first group of bits OQ and 105 of counter 3, sending alternately pulses to the first group of coordinate tires 19Q -19fl. The second and. The third group of counter 3 controls the operation of the first and second switches 2 and 1A, which interrogate the second group of coordinate buses 20 respectively (-20 (, the third group of coordinate buses ((. When you press the key, the signal of the decoder 4 enters the inputs of the first and second switches 2 and 14 on the second and third coordinate buses and it appears at the output of an AND 15 element combining outputs 17 and 18 of the first and second switches.This signal goes to the input of the fixing unit of code 5, prohibiting further operation of the counter 3 and as the signal r on the bus 9. On the outputs lOj.-10 of the counter 3, the key pressed code is fixed, which, when a signal is received from the outside by the bus 7, goes to the code read bus 1. The trigger 13 fixes the state of the key on the bus 16 A series of keyboards. Introducing a second comm-ora simplifies the device. Performing the keyboard as a three-dimensional matrix reduces the number of communication lines of the keyboard of the device for input from 16 lines to 12 lines for the keyboard. consisting of 64 keys. With the increase in the number of keys, the gain will increase. This is particularly important when implementing the control unit in the form of an integrated circuit. Claim device The device for input of information contains a volumetric matrix keyboard, a block of code fixing, the output of which is connected to the counter input, the outputs of the first group of which are connected to the inputs of the decoder, the outputs of which are connected to the first group of keyboard coordinate buses, the second group of coordinate fields of which are connected to the inputs The first group of the first switch, the inputs of the second group of which are connected to the outputs of the second group of the counter, characterized in that, in order to increase the reliability of the device, into it A second switch and an element I are entered, the output of which is connected to the input of the code fixation block; the outputs of the third group of the counter are connected to the inputs of the first group of the second switch, the output of which is connected to the first input of the And element, the second. The keyboard is connected to the inputs of the second group of the second switch. Sources of information taken into account in the examination 1. UK patent number 1464912, cl. G 06 F 3/02, published. 197. 2, Patent of France No. 2270638, cl. G 06 F 3/02, published. 1978 (prototype).

Ig 0 // A оПе 0 // At Qffc Q / fb Q / fa