KR20000053744A - Computer network switching device with dual hard disk - Google Patents

Abstract

PURPOSE: A device for converting a computer network having a security function, is provided to operate divided internal and external networks with one computer, by installing hard disk drivers(HDDs) for internal and external networks and operating the internal/external HDDs in the internal/external networks respectively. CONSTITUTION: A device for converting a computer network having a security function, is connected to a main board of a computer, selects and operates hard disks installed by being divided into internal/external networks by recognizing selection of a switch device. The device comprises a network converting device(120), a signal processing device(130) and a hard disk switching device(140). The network converting device(120) converts internal/external communication networks. The signal processing device(130) is gate-combined to process an operation of the switch device and an instruction from the main board. And the hard disk switching device(140) operates relay to operate the hard disks by being switched according to an operation of the signal processing device.

Description

Computer network switching device with dual hard disk

The present invention is a computer network switching device having a security function, the switch unit for selecting the internal and external network, and the network switching to select and operate the hard disk installed in the internal and external networks to recognize the selection of the switch unit connected to the main board of the computer The network switching device includes a network switching unit for switching internal and external communication networks, a signal processing unit gate-coupled to handle switch operations and commands from the main board, and a hard disk switching operation according to the operation of the signal processing unit. The present invention relates to a computer network switching device having a security capability including a hard disk switching unit operating in a relay.

In general, the communication environment using a computer such as the Internet has been rapidly increased, and by installing its own networking network for building an internal system, it is used for payment and data transfer between each other through networking. If such networking is, for example, networking of military units or nuclear power plants that require national security, there is a concern that hackers may be invaded. Therefore, hackers may enter the defense computer network to prevent errors or malfunctions such as missile control. If it does, it means fatal damage to national defense. Also, in case of intrusion into financial institutions, if the situation of unfairly withdrawing the deposits of customers occurs, this also causes the fatal damage of the computer system and the deterioration of the reliability to the customers. In order to prevent such a system damage, it is recommended to separate the external network from the internal network and to use two separate computers for the internal network and the external network. This includes: a first computer 10 including a monitor 11, a keyboard 12, a main body 13, and a LAN card 14 connecting and using an internal network as shown in FIG. 1;

A second computer 20 including a monitor 11, a keyboard 12, a main body 13, and a modem 15 for connecting and using an external network (Internet network) is provided. Use the computer you choose.

However, in such a case, there is a problem that each individual should have two computers 10 and 20, and there is a concern about the cost of installing the computer.

The present invention is to solve this, the object of the present invention is to install the hard for the external network and the internal network respectively, the external network hard to operate on the external network, the internal network hard to operate the internal network to a single computer It is to enable separate internal network and external network respectively.

To this end, the present invention includes a switch unit for switching to select an internal and external network, and a network switching card interlocked with the selective switching of the switch unit, so that the internal network and the external network connected simultaneously with the operation of the switch are automatically selected and connected. .

1 is a block diagram illustrating a general computer system;

2 is a schematic configuration diagram of the present invention;

3 is a connection diagram showing a switch unit of the present invention;

Figure 4 is a block diagram of a network switching device of the present invention.

<Explanation of symbols for the main parts of the drawings>

40; switch 41; switch 42; connector

51, 52; hard disk 100; network switching device 110; external circuit connection

111; external network connection 112; internal network connection 113; LAN card

120 network switching unit 121-124; relay 130; signal processing unit

131; inverter 1 132, 133; gate 141, 142; buffer

Inverter 145; latch relay

That is, the present invention is composed of a switch unit for selecting an internal and external network, and a network switching device connected to a main board of the computer and recognizing the selection of the switch unit to select and operate a hard disk installed separately into an internal and external network. Network switching unit for switching the internal and external communication network, a signal processing unit gate-coupled to handle the operation of the switch unit and the command from the main board, and a hard disk switching unit for relay operation so that the hard disk switching operation in accordance with the operation of the signal processing unit It is to provide a computer network switching device having a security function characterized in that made.

The switch unit may be connected to a power supply (+) terminal and a ground terminal so that the first light emitting diode emits light when it is switched on, and a power supply (+) so that the second light emitting diode emits light. A switch having second contacts T1-T2 and T4-T5 connected to the terminal and the ground terminal, and when the switch is turned on, the power supply (+) is applied to the first connection terminal and the power source (-) is connected to the second terminal. It includes a connector for connecting the switch to the network switching device is applied to the connection end.

The network switching unit may include an external network connection unit connecting an external network, an internal network connection unit connecting an internal network, a LAN card interfaced to enable communication, and a relay functioning to connect the LAN card and the internal network or an external network connection unit. It is made to include.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a schematic configuration diagram of a system in which a network switching device of the present invention is coupled to a main board expansion slot of a main body 13 in a computer system including a monitor 11, a keyboard 12, and a main body 13; The network switching device 100 is connected, and the network switching device 100 couples two hard disks 51 and 52 that are separately separated and corresponding external line connection units 110 to each other. ) Is configured to be switched by the network changeover switch 41 installed in the front of the main body.

3 is a configuration diagram of a switch unit 40 including a switch 41 for selecting a function of the present invention, and is connected to a power supply (+) terminal and a ground terminal, respectively, so that the second light emitting diode LED2 emits light when it is switched on. Second contacts T1-T2 and T4-T5, and first contacts T2 respectively connected to the ground terminal so that one end of the first light emitting diode LED1 connected to the power supply terminal is commonly switched off. A switch 41 having T3 and T6; The power supply Vcc is applied to the first connection terminal CO1 when the switch 41 is turned on, and the power supply (-) which is grounded when the switch 41 is turned off is applied to the second connection terminal CO2 when the switch 41 is turned off. It comprises a connector 42 for connecting to the device 100. In the drawing, resistors R1 and R2 have the same resistance value, and resistor R3 should be larger than the values of resistors R1 and R2.

4 is a block diagram illustrating a configuration of a network switching device 100 according to the present invention. The switch unit 40 is connected to the network switching unit 120 for switching internal and external communication networks and the switch unit 40 through the connector 42. A signal processor 130 gate-coupled to process operation and instructions from the motherboard, and a hard disk switch 140 that relays to switch the hard disks 51 and 52 according to the operation of the signal processor 130. It is done by

The network switching unit 120 is composed of relays 121, 122, 123, and 124 for relay operation to enable the connection operation of the external line connection unit 110 for connecting an external line. The external line connection unit 110 is configured to include an external network connection unit 111 for connecting an external network, an internal network connection unit 112 for connecting an internal network, and a LAN card 113 for interfacing to enable communication. The relays 121 to 124 may be variously designed within the range of the relay function so that the internal network connection unit 112 and the external network connection unit 111 may be selectively connected to the LAN card 113.

When the signal processing unit 130 receives the high level signal applied by the switch-on operation through the connector 42, the inverter 1 131 outputs the inverting to the level controller, and a hard switching command from the main board; And gate 2 (132) and the output of the inverter 1 (131) and the inverter 3 (143) forming the hard disk switching unit 140 to the inverting function and the high level applied by the switch-on operation Inverter 2 144 constituting the hard disk switching unit 140 receives a signal and a hard switching command from the main board, and is configured as an AND gate 1 133 for outputting an inverting function.

The hard disk switching unit 140 is an inverter 2 (144) for inverting the output of the gate 1 (133) constituting the signal processing unit 130 in the low state, and the signal processing unit 130 when the switch is off Inverter 3 (143) for receiving and inverting the output of AND gate 2 (132), which forms a circuit, and a buffer for applying power to one input terminal of latch relay (145) when there is output of inverter 2 (144). 1 (141), buffer 2 (142) applied to the other input terminal (⑨) of the latch relay 145 when the output of the inverter 3 (143), and hard disk 1 when there is an output of the buffer 1 (141) It consists of a latch relay 145 which drives 51 and applies drive power to hard disk 2 52 when there is an input of buffer 2 142.

The operation of the present invention configured as described above will be described.

When the switch 41 shown in FIG. 2 is turned on, the second contacts T1 and T2 and T4 and T5 of the switch 41 are turned on, and thus, the fourth connection terminal CO4 of the connector 42 is connected to ground ( The second light emitting diode LED2 is applied to the GND, the power supply Vcc is applied to the third connection terminal CO3 to emit light, and the high power supply Vcc is provided to the first connection terminal CO1. 5 volts) is applied. In addition, since the power supply (+) is supplied from the slot terminal (B6) connected to the main board, the terminals (②③, ⑥⑦) of the relays 121-124 of the network switching unit 120 are connected to each other through the internal network connection unit 112. The internal network and the LAN card 113 forms a connection state. In the above, the LAN card 113 is mounted on the main body of the computer and is connected to one of an internal network and an external network (Internet network).

On the other hand, when the switch 41 of the switch unit 40 is turned on, the power supply Vcc is applied to the first connection terminal CO1 of the connector 42 to be inverted by the inverter 131, and one input terminal of the AND gate 2 132 is provided. Is applied at low level. When the power is turned on, the low level is applied to the other input terminal of each end gate 133 and 132 through the slot terminal B26 connected to the main board, so that the output of each end gate 133 and 132 becomes low level and hard. The disk switching unit 140 maintains the existing connection state. However, when the high level signal through the first connection terminal C01 is transmitted to the system through the port RS-232C, the software operates to restart the system. When the system restarts, a high level signal (approximately 1 second) is applied from the motherboard via slot terminal A26. Then, the output terminal ③ of the AND gate 1 133 outputs a high level so that the hard disk switching unit 140 performs a switching operation. The terminal (B3) connecting through the main board and the slot functioning in the present invention is connected to the ground of the switch and the main board of the network switching unit 120 and the computer, the terminal (B6) is the network switching unit 120 The power supply (+) for the relay operation of the terminal, the terminal (B19) supplies the power supply (+) for the signal processing unit 130 and the hard disk switching unit operation, the terminal (B26) is the signal processing unit 130 and The hard disk switching unit 140 supplies a signal for operation.

In the operation of the hard disk switching unit 140 in the present invention, when the output of the gate 1 133 is supplied at the high level, the inverter 144 is inverted to the low level and applied to the buffer 1 141. Buffer 1 (141) is connected to the terminal (②③) when the low level of the input terminal (③) is a high level (+). Then, the latch relay 145 is applied with a high level to one input terminal (⑩) to operate the latch relay 145 (terminals (③④, ⑦⑧) are conducting), which means that power is supplied to the hard disk 1 (51). It means that the hard disk switching function to drive the hard disk 1 (51). That is, when the switch 410 is turned on, the internal network and the hard disk 1 are driven to perform a system function that is physically separated from the hard disk 2.

On the other hand, when the switch 41 is turned off, the first contact point T2-T3 is turned on and the light is emitted due to the connection to the ground via the fourth connection terminal CO4 and the application of the power supply Vcc to the light emitting diode LED1. Since the diode LED1 is turned on and the first contact point T2-T3 is turned on, the second connection terminal CO2 of the connector 42 is in an open state, thereby relaying the relays 121-124 of the network switching unit 120. Is off. In this way, if each of the relays (121-124) does not operate, the terminals (①③, ⑧⑥) in the normal on state is connected to form a connection state between the external network connection portion 111 and the LAN card.

On the other hand, when the switch 41 is turned off, the first connection terminal CO1 becomes low level, and this is converted to high level through the inverter 131, so that the output of the end gate 132 becomes high level and the inverter 3 (143). The output is inverted to low level at. Accordingly, the buffer 2 142 outputs a low level and is applied to the other input terminal of the latch relay 145, so that the terminals 3, 5 and 8 are turned on in the normal state, and thus the hard disk 2 52 is driven. That is, when the switch 41 is turned off (second mode selection), the external network is selected and the corresponding hard disk is also selected by the hard disk 2 (52) to boot. Therefore, it selects a switch according to the type of network to be selected and drives the corresponding hard disk separately to block the intrusion of hackers through the external network. This makes unselected communication lines and disks inaccessible. The preferred mode of use of the present invention is to select the network selector switch 41 (on or off or in practice, it is better to mark the internal or external network in the vicinity of the main body switch 41). Operation starts booting through the selected hard disk. In addition, if you change your network while you are using your computer, shut down your applications and shut down your system (for example, Windows 200 or Linux). In this state, when the network selection switch 41 is selected and the power is applied, the corresponding hard disk is operated by the operation of the network switching device 100.

The present invention described above is not limited to the above-described embodiments and drawings, and various permutations, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, the present invention installs two hard disks in the main body, additionally installs a network switching device, and installs a network selection switch to turn on the switch to be used as an internal network automatically, and when turned off to an external network automatically. It enables the connection and use, so that one computer can implement two computer functions, and only one of the separated hard disks is operated when the external network and the internal network are driven, so that even if a hacker intrudes, the connection is penetrated to the other physically separated network. Inadequate system nature can be used to prevent data penetration. In addition, by adding an OFF function to block the network function to the switch, it is operated in three stages and can be used in various ways, and improves the security function to prevent illegal access from the outside. In addition, it is not necessary to have two computers separately because a network switching device and a hard disk are installed in one computer.

Claims (4)

It consists of a switch unit for selecting an internal and external network, and a network switching device connected to the mainboard of the computer and recognizing the selection of the switch unit to select and operate a hard disk installed as an internal or external network. A network switching unit for switching, a signal processing unit gate-coupled to process the operation of the switch unit, and a command from the main board, and a hard disk switching unit for relaying the hard disk to be switched according to the operation of the signal processing unit. A computer network switching device having a security function. According to claim 1, wherein the network switching unit is made of a relay (121, 122, 123, 124) relay operation to enable the connection operation of the external line connection unit 110 for selectively connecting the external line, the external line connection unit 110 is connected to the external network Computer network switching device having a security function characterized in that it comprises an external network connection portion 111 for connecting, an internal network connection portion 112 for connecting the internal network, and a LAN card 113 for interfacing communication. The inverter of claim 1, wherein the signal processor receives a high level signal applied through a switch-on operation through the connector 42, and converts the inverter 1 131 into a low level, and hard-switches from the main board. And gate 2 (132) and outputs the input and output so that the inverter 3 (143) forming the hard disk switching unit 140 receives the output command and the inverter 1 (131) to the inverting function, and is applied by the switch-on operation Inverter 2 (144) constituting the hard disk switching unit 140 receives the high-level signal and the hard switching command from the main board 140, and the end gate 1 (133) for outputting the inverting function. Computer network switching device having a security function. The inverter of claim 1, wherein the hard disk switching unit includes an inverter 2 (144) for inverting the output of the gate 1 (133) of the signal processing unit (130) to a low level in a switched-on state, and a signal processing unit ( Inverter 3 143 which receives and outputs the output of AND gate 2 132 constituting 130, and applies power to one input terminal of latch relay 145 when there is an output of inverter 2 144. Buffer 1 (141) and the output of the inverter 3 (143), the buffer 2 (142) to be applied to the other input terminal (⑨) of the latch relay 145, and when there is an output of the buffer 1 (141) And a latch relay (145) for driving a disk 1 (51) and applying a driving power to the hard disk 2 (52) when there is an input of the buffer 2 (142).