SU1640719A1 - Device to read data from resistive media - Google Patents

Description

The invention relates to automation and computing and can be used, for example, in computer input devices.

The purpose of the invention is to increase speed.

FIG. 1 shows a functional diagram of the device; in fig. 2 - functional block diagram of electrocontact sensors and selector; in fig. 3 shows an embodiment of a storage medium; in fig. 4 is a functional block diagram.

The device contains a block of 1 electro-contact sensors, a control unit 2, a selector 3, a code converter 4, a transmitter 5 connected to communication channel 6, a pulse generator 7, a control block 8, a switch 9, a block 10

indications, block 11 of a set of information attributes, shaper 12 service symbols and commands.

Block 1 of electrocontact sensors contains N groups of input electrocontact lamellae 13, group of output electrocontact lamellae 14, amplifiers-formers 15, switching element 16 connected to power supply buses 17, 18 and zero potential.

The storage medium contains electrical contact pads 19, tires 20 and user-applied informational electrically conductive jumpers 21.

All elements on the carrier are applied with a conductive paint,

The control block 8 contains two triggers 22, 23 element NOT 24 and eleOt

4b o

WITH

the cops are NOT-25-28, the input of the element NOT 24 is the input of the STARTING READING of the block, and the output is connected to the installation input of the unit of the first trigger 22 g and the first input of the element IS-NOT 25 is the output of the INITIAL INSTALLATION, the second input of the first element I- NOT 25 is the INLET REINFORMATION input, the third input of the AND-NOT element 25 and the third Q inputs of the IS-NOT 27, 28 elements are the inputs for setting the block parameters.

The device works as follows. Before installing the information carrier by means of switching elements 15, which are located in blocks 11 and 12, the necessary information signs, service symbols and commands, as well as the order of their input into the communication channel, are set. The information carrier is inserted into the block 1 of electrocontact sensors. By pressing the switching element 16 at the output of the STARTING-UP READING the block $ a corresponding signal is formed, according to which the device 25 is set to its initial state and the reading mode starts. In this case, in control block 8, trigger 22 is set to one state and its output signal enables the operation of the NAND element 26. When a clock pulse arrives at its second input from block 7, trigger 23 is set to one state

Zo .j

inverse, its output signal

resets trigger 22 to the zero state, and direct output allows operation of AND-NOT elements 27, 28 and the control unit. Depending on the information gathered in block 12, the enabling signal goes to element 27 or 28, therefore the clock pulses from block 7 pass only to the output of one element 27 or 28. Depending on which output of block 8 pulses come to, switch 9 , they alternately appear in the corresponding sequence at its outputs. The polling order as well as the status of the polling output code are displayed in display unit 10. Polling pulses are simultaneously applied to the corresponding inputs of blocks 1, 11 and 12. If there is a jumper on the storage medium in block 1 or a switched connection in blocks 11, 12, the switching signal is fed to the corresponding output amplifier driver, the output signals of which are fed to

the corresponding inputs of control unit 2 and selector 3, whose operation is gated with pulses from block 7. Each read cycle consists of two cycles. First, the connection with the upper contact pad 19 is polled, and then with the lower one. If there is a connection to the upper platform, this is integrated with the information zero, and if there is a connection with the lower platform, the information unit. The read information is fed to a code converter, in which it is converted into a linear code, written into the buffer register of the transmitter, and transmitted to the line. Upon completion of reading the last character of the information in block 12, a space code is generated, which is transmitted to the line,

Thus, service symbols and commands, signs of information and the order of their reading are formed in the device, which reduces the area of the information carrier.

Claims (2)

1. A device for reading information from resistive carriers containing a unit of electrocontact sensors, a control unit, a selector, a code converter, a transmitter connected to the communication channel, a control unit, a display unit and a switch, the first and second inputs of which are connected to the corresponding outputs UG1-block, the first output is connected to the input of the electrocontact sensor unit, and the third and fourth outputs are connected to the corresponding inputs of the display unit, the information outputs of the electrocontact sensor unit Soi-0 is connected to the information inputs of the control unit and selector, and the output of the STARTING READING is connected to the corresponding input of the control unit, the input BANNING READING of which is connected to the corresponding output of the control unit and the third output is connected to the second input of the control unit, the information inputs and outputs of the converter codes are connected respectively to the outputs of the selector and the inputs of the transmitters of the control unit, and the control output is connected to the control input of the control unit, characterized in that, in order to increase speed It comprises a set of block 516 information signs, a driver of service symbols and commands, and a pulse generator, the INITIAL USGANKA input of which is connected to the corresponding output of the control unit, the first and second, third and fourth, fifth, sixth, seventh and eighth outputs are connected respectively to the first and the second inputs of the control unit, the transmitter, the selector and the control unit, the first input of the information feature set block is connected to the first input of the forwarder of service symbols and commands and to the second output of the switch, the second input of the imaging unit Service symbols and commands are connected to the second output of the switch, the first output of the information feature set and the shaper unit — service symbols and commands are connected respectively to the first and second inputs of the selector, the outputs of the second group of the dimmer 196 symbols and commands are connected to the second input of the control unit, and the INPUT READING input is connected to the corresponding output of the electrocontact sensor unit. 2. The device according to p. Characterized in that the block of electrocontact sensors contains N groups of input electrocontact lamels arranged in columns, a group of output electrocontact lamellae connected to the inputs of the corresponding amplifiers of signal conditioners whose outputs are informational outputs of the block , the switching element, the inputs of which are connected respectively to the power buses and zero potential, and the output is the output of the BEGINNING READING of the block, even and odd electrocontact lamellae are combined S between themselves m are respectively the second inputs of the block. . Signature PlacesCode The number in the shipment of the GO-consignment note and packet latch. - (5-171322 FFFFFFF . "  5 5 (6556 “OOF“ “ e, 6 "6S6" G 1 I I G G 7 FFO0FF tsssatee "FF FO .J