RU2490711C1 - Removable code unit - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: removable code unit has a control unit, first and second groups of outputs of which are respectively connected to the first and second groups of inputs of a memory unit, the group of inputs/outputs of which is connected to the group of inputs/outputs of the control unit, the input and first output of which are respectively connected to the first output and input of an interfacing unit, the second input and output of which are connected to the first input and output of a connector; there is a filter and a programming unit, the group of outputs of which is connected to the group of inputs of the control unit, the second output of which is connected to the input of the programming unit, the group of inputs and output of which are connected to the group of outputs and the second input of the connector, the third output of which is connected to the input of the filter, the group of inputs; fourth and fifth outputs of the connector are the group of inputs and the first and second outputs of the device.

EFFECT: high reliability and service life of the removable code unit by reducing the number of discrete elements and including a filter which increases noise-immunity of the device.

5 dwg

Description

The invention relates to techniques for protecting various objects from access by unauthorized persons, in particular to information carriers.

Known interchangeable code block (see RF patent No. 2382410, class G06K 19/07, publ. 02/20/2010, Bull. No. 5), containing a connector, a pairing unit, a recording pulse generation unit and a memory unit. The first input and output of the interface unit are connected respectively to the output and input of the connector. The input and the first output of the control unit are connected respectively to the second output and the second input of the interface unit, and the second output of the control unit is connected to the input of the recording pulse generating unit, the output of which is connected to the input of the memory unit. A group of inputs / outputs and two groups of inputs of a memory unit are connected, respectively, with a group of inputs / outputs and two groups of outputs of a control unit.

The disadvantages of the known device are the limited reliability due to the large number of discrete elements in the block for generating a recording pulse and low noise immunity of the device, insufficient memory for processing large amounts of information.

The above device is the closest in technical essence to the claimed device and therefore is selected as a prototype.

Achievable technical result is to increase the reliability of the code plug-in unit, as well as to increase the volume of stored information.

To achieve a technical result, in a replaceable code block containing a control unit, the first and second groups of outputs of which are connected respectively to the first and second groups of inputs of the memory unit, the group of inputs / outputs of which are connected to the group of inputs / outputs of the control unit, the input and first output of which are connected respectively, with the first output and input of the interface unit, the second input and output of which are connected to the first input and output of the connector, new is that an additional filter is introduced and the unit is programmed A group of outputs of which is connected to a group of inputs of a control unit, a second output of which is connected to an input of a programming unit, a group of inputs and an output of which is connected to a group of outputs and a second input of a connector, a third output of which is connected to a filter input, a group of inputs, fourth and fifth outputs connectors are a group of inputs and the first, second output of the device.

The specified set of essential features allows to increase the reliability of the code interchangeable unit by reducing the number of discrete elements by eliminating the recording pulse generation unit and introducing a filter that increases the noise immunity of the device.

Figure 1 presents a functional diagram of a code interchangeable block, figure 2 shows a diagram of a conjugation block, figure 3 is a diagram of a control unit, figure 4 is a diagram of a programming block, figure 5 is a filter diagram.

The replaceable code block (Fig. 1) contains a control unit 1, the first and second groups of outputs of which are connected respectively to the first and second groups of inputs of the memory unit 2, the group of inputs / outputs of which are connected to the group of inputs / outputs of the control unit 1, the input and the first output which is connected respectively to the first output and input of the interface unit 3, the second input and output of which is connected to the first input and output of the connector 4, characterized in that the filter 5 and programming unit 6 are additionally introduced, the group of outputs of which is connected is not connected to the group of inputs of control unit 1, the second output of which is connected to the input of programming unit 6, the group of inputs and output of which is connected to the group of outputs and the second input of connector 4, the third output of which is connected to the input of filter 5, the group of inputs, fourth and fifth outputs of the connector 4 are a group of inputs and the first, second output of the device.

In particular, the interface unit 3 (FIG. 2) contains resistors 7-13, transistors 14.1 and 14.2 and microcircuits 15.1 and 15.2. The first 16 and third 18 inputs of the pairing unit 2 are connected to the power buses (+5 V and General, respectively), the second input 17 and the first output 19 are connected to the input and output of the connector 1, the second output 20 and the fourth input 21 are connected to the input and the first the output of the control unit 1. Input 16 is connected through a resistor 8 to the collector of transistor 14.1 and through a chip 15.1 to output 20, and through resistor 10 to a collector of transistor 14.2. The emitter of the transistor 14.2 is connected to the bus 18 General and through a resistor 13 is connected to its base. Input 17 through resistor 7 is connected to the base of transistor 14.1 and through resistor 9 to bus 18 Common, to which the emitter of transistor 14.1 is connected. The input 21 through a series-connected chip 15.2 and a resistor 12 is connected to the base of the transistor 14.2, the collector of which through the resistor 11 is connected to the output 19.

The control unit 1 (figure 3) contains resistors 22-37, the microcontroller 38 and the resonator 39. The first input and output of the microcontroller 38 are connected to the block 2 interface. The second output and the group of inputs of the microcontroller 38 are connected to the programming unit 6. The third output of the microcontroller 38 is connected to the first output of the resonator 39, the fourth output is connected to the second output of the resonator 39. Each input / output of the group of inputs / outputs and each output of the first group of outputs of the microcontroller 38 connected through the corresponding resistor 22-37 to the power bus (+5 V) and directly to the memory unit 2. The second group of outputs of the microcontroller 38 is connected to the memory unit 2.

The programming unit 6 (figure 4) contains a matching unit 40, a set of diodes 41, a reset unit 42 and microcircuits 43.1, 43.2. The first output and the group of inputs of the matching block 40 are connected to the input and the group of outputs of the connector 4. The second output of the block of matching 40 is connected to the first output of the set of diodes 41, the second output of the set of diodes is connected to a common bus (Common). The third output of the set of diodes 41 is connected via a reset unit 42 to a power bus (+5 V), to a common bus (Common) and through microcircuits 43.1, 43.2 is connected to a control unit 1.

The filter 5 (figure 5) contains capacitors 44-46, the inductor 47. The input 48 of the filter 5 is connected through a capacitor 44 to a common bus (Common) and through the inductor to a power bus 49 (+5 V). Capacitors 45, 46 with the first output are connected to the power bus 49 (+5 V), and the second output with a common bus (Common).

Block code replaceable (figure 1) works as follows.

Before starting work, the code plug-in unit is connected to the control device (not shown in the figures). Information is exchanged through the interface unit 3 and connector 4 via a two-wire communication line (not shown in the figures) in duplex mode of exchange using commands that have the following general format: operation code, operand name, dimension, data. The operation code determines the type of command to execute. The name of the operand is used to search for the operand, the dimension - to determine its size. The operand name and dimension are located in the internal memory of the control unit 1, and the data in the memory unit 2. After connecting these circuits to the connector 4 from the control device, the control unit 1 receives a module selection command, which searches for the module in the control unit 1 and the memory unit 2. If this module is found, a read command is received from the control device, according to which data is transmitted from the memory unit 2. When a command to write the module from the control device to the control unit 1 wire is received the module name and dimension are recorded in the internal memory of the control unit 1, and the data in the memory unit 2. By this command, the control unit 1 generates information and control signals at the terminals of the memory unit 2. At the end of the recording, the control unit 1 transmits an end command to the control device data recording, and the control device transmits to the control unit 1 a command for comparing the transmitted data with the recorded data. In the case of a positive comparison result, the control unit 1 transmits to the control device a message about the end of the write command.

The interface unit 3 (figure 2) works as follows.

Interface unit 3 serves to coordinate control and response commands in a two-wire communication line and starts to work immediately after applying voltage (+5 V) to the corresponding terminals. The appearance of the information signal of a low voltage level (a sign of the beginning of information exchange) at the input 17 leads to the locking of the transistor 14.1 and the formation on its collector of a signal of a high level of voltage supplied to the input of the microcircuit 15.1. The microcircuit 15.1 inverts the received signal and transfers it to the control unit 1. The low-voltage information signal (a sign of the beginning of an information exchange) at the input 21 of the interface unit 2 is inverted by the microcircuit 15.2, being converted into a high-voltage signal, which, when passed to the base of the transistor 14.2 of a low signal voltage level, which is transmitted to the output 19 of the interface unit 3.

The control unit 1 (figure 3) works as follows.

After applying the supply voltage (+5 V), the microcontroller 38 begins its work under the control of the program located in it. The microcontroller 38 exchanges information with the interface unit 3 and the memory unit 2 through the corresponding conclusions. To access the memory unit 2, the microcontroller 38 generates the address at which the appeal is made. Resistors 27 ... 37 are a load of data pins and address pins having an open output.

The programming unit 6 (figure 4) works as follows.

When programming a code plug-in unit, data and control commands are received from an external programming device (not shown in the figures) through connector 4, matching block 40 to control unit 1. The external programming device generates a reset signal, which through connector 4, matching block 40, a set of diodes 41, the reset unit 42, the microcircuit 43.1, 43.2 is transmitted to the control unit 1.

Filter 5 (figure 5) is a U-shaped LC filter, which allows to increase the noise immunity of the code-replaceable block. Through the filter 5, the supply voltage (+5 V) is supplied to the programming unit 6, the interface unit 3, the control unit 1 and the memory unit 2 (not shown in the figures).

The connector 4 (figure 1) can be represented by a plug RPMM1-11Sh1-V. The memory unit 2 (figure 1) can be performed on the chip 1638PP1AU. As microcircuits 15.1, 15.2 (figure 2), 43.1, 43.2 (figure 4) can be used chip 1554TL2. Block matching 40 (figure 4) can be performed using a chip 1554LA3. The microcontroller 38 (figure 3) can be performed on the chip 1882BE53U.

Tests of the code plug-in unit were carried out, which confirmed its operability. The amount of information stored in the code block is 32 times larger than the prototype.

Claims (1)

A removable code block containing a control unit, the first and second groups of outputs of which are connected respectively to the first and second groups of inputs of the memory block, the group of inputs / outputs of which are connected to the group of inputs / outputs of the control unit, the input and first output of which are connected respectively to the first output and the input of the interface unit, the second input and output of which is connected to the first input and output of the connector, characterized in that an additional filter and a programming unit are introduced, the group of outputs of which are connected to sing inputs of the control unit, the second output of which is connected to the input of the programming unit, the group of inputs and the output of which are connected to the group of outputs and the second input of the connector, the third output of which is connected to the filter input, the group of inputs, the fourth and fifth outputs of the connector are the group of inputs and the first, second outputs of the device.

Images