CN110262983A - The data memory device of function is destroyed with self - Google Patents

Abstract

The present invention provides a kind of data memory device that function is destroyed with self, it is plugged in a host, data memory device includes a controller, a plurality of flash memories, a trigger and a standby power supply module, when data memory device is pulled away from host, trigger will be triggered and send the starting signal of entity destruction to standby power supply module, the starting signal that standby power supply module is destroyed according to entity exports a high pressure to flash memory, and flash memory will be destroyed by high pressure.

Description

Data storage device with self-destruction function

technical field

The present invention relates to a data storage device, in particular to a data storage device capable of self-executing physical destruction when it is pulled out from a host.

Background technique

Data storage devices (SSD hard disk, SD card, CF card, flash drive) are often used for a confidential and important data storage purpose, such as: financial data, military data storage purposes. Furthermore, important confidential data is usually encrypted to prevent the data from being easily copied.

At present, the theft of some important data often occurs in the military or business. When a malicious person wants to steal the confidential data inside the data storage device, the data storage device can also be directly pulled out from a computer host. Then, after the malicious person reinserts the data storage device into another computer host, reads the data storage device again, decrypts the encrypted confidentiality data inside the data storage device, and can read the confidentiality data from the data storage device .

In view of this, the present invention proposes a data storage device with a self-destruction function. When the data storage device is pulled out from a computer host, the data storage device will activate the self-destruction function to destroy the data storage components in the data storage device. In this way, the data stored in the data storage device can be prevented from being stolen, which is the purpose of the present invention.

Contents of the invention

An object of the present invention is to provide a data storage device that can be assembled in a host. The data storage device includes a plurality of flash memory. When the data storage device is pulled out from the host, the data storage device will start a self- Destroy function, output a high voltage to the flash memory, and destroy the flash memory through high voltage, so when an unauthorized person pulls the data storage device from the host, the data storage device will self-destruct the flash memory to avoid leakage of important data stored in the flash memory .

Another object of the present invention is to provide a data storage device, the data storage device includes a trigger, the data storage device uses a trigger to send and receive signals to the host to detect whether the closed loop between the data storage device and the host exists , when it is detected that the closed loop between the data storage device and the host does not exist, it means that the data storage device has been pulled out from the host, and the data storage device will perform a self-destruct action.

Yet another object of the present invention is to provide a data storage device, the data storage device includes a trigger, and the trigger includes a signal input end, when the data storage device is plugged into the host, the signal input end of the trigger will pass through the host Grounding: When it is detected that the signal input terminal of the trigger is not grounded through the host, it means that the data storage device has been pulled out from the host, and the data storage device will perform a self-destruct action.

Another object of the present invention is to provide a data storage device, the data storage device includes a micro switch with a switch handle, the host includes a baffle, when the data storage device is plugged into the host, the micro switch When the switch handle is pressed against the baffle, the data storage device is prohibited from starting the self-destruction action; on the contrary, when the data storage device is pulled out from the host, the switch handle of the micro switch is released from the baffle, and the data storage device The device will perform a self-destruct action.

Another object of the present invention is to provide a data storage device, which is set in an external box as a removable data storage device, the data storage device includes a micro switch with a switch handle, the switch handle is protruding Outside the external box, the external box includes an external connector, and the host includes a slot for a host-side connector. When the external box is pushed into the bottom of the slot, the external connector will be plugged into the host-side connector and The switch handle of the micro switch will be pressed against a bottom plate of the slot, and the data storage device is prohibited from starting the self-destruction action; otherwise, when the external box is pulled away from the slot of the host, the switch handle of the micro switch will Released from the bottom plate of the slot, the data storage device will perform a self-destruct action.

To achieve the above object, the present invention provides a data storage device with a self-destruction function, including: a controller; a plurality of flash memory; a device-end connector, through which the data storage device is plugged into a host computer. In the host terminal connector; a trigger; and a backup power module, the controller is respectively connected to the flash memory, the device connector, the trigger and the backup power module, and the trigger is connected to the backup power module; when the device end of the data storage device is connected When the device is pulled out from the host connector of the host, the trigger will be triggered and send a start signal of physical destruction to the backup power module, and the backup power module will output a high voltage to the flash memory according to the start signal of physical destruction, and the flash memory will be activated by the high voltage destroy.

In one embodiment of the present invention, the backup power supply module includes a battery pack, a switch and a booster, the trigger is connected to the battery pack and the switch, and the booster is connected between the switch and the flash memory, when the trigger sends the entity to destroy When the starting signal of the starting signal is sent to the backup power module, the starting signal of the physical destruction controls the switch to be turned on, and a discharge energy of the battery pack is transmitted to a booster through the switcher, and the booster outputs a high voltage to the flash memory.

In one embodiment of the present invention, the host connector of the host includes a first specific host pin and a second specific host pin, the first specific host pin and the second specific host pin are connected together, The device end connector of the data storage device includes a first specific device end pin corresponding to the first specific host end pin and a second specific device end pin corresponding to the second specific host end pin, and the trigger includes A signal input terminal and a signal output terminal, the signal input terminal is connected to the first specific device terminal pin, and the signal output terminal is connected to the second specific device terminal pin; when the data storage device is connected to the host terminal connector of the host computer through the device terminal connector When plugged together, the pins of the first specific device end are electrically connected to the pins of the first specific host end, the pins of the second specific device end are electrically connected to the pins of the second specific host end, the signal output port, and the second specific device end pin, the second specific host pin, the first specific host pin, the first specific device pin and the signal input to form a closed loop; bit signal and can receive the first level signal from the signal input terminal, the level state of a signal on the signal input terminal will be the first level state, and the flip-flop operates according to the first level state of the signal input terminal A normal mode, to prohibit sending the start signal of physical destruction to the backup power supply module; if the flip-flop sends the first level signal from the signal output terminal and does not receive the first level signal from the signal input terminal, the signal on the number input terminal The level state of the signal will change from the first level state to a second level state, and the flip-flop operates in a trigger mode according to the second level state of the signal input terminal to send an activation signal of physical destruction to the backup power module .

In one embodiment of the present invention, the trigger is a trigger triggered by a high level, the host connector of the host includes a first specific host pin that is grounded, and the device connector of the data storage device includes a pin connected to the first pin. The first specific device pin corresponding to the specific host pin, the trigger includes a signal input end, the signal input end is respectively connected to a power supply and the first specific device pin, when the data storage device passes through the device connector When plugged into the host connector of the host, the signal input terminal is grounded through the first specific device terminal pin and the first specific host terminal pin, and the level state of a signal on the signal input terminal will be pulled down to A low level state, the flip-flop operates in a normal mode according to the low level state, so as to prohibit sending the start signal of physical destruction to the backup power module; when the device end connector of the data storage device is removed from the host end connector of the host When unplugging, the level state of the signal on the signal input terminal will be pulled up to a high level state by the power supply, and the flip-flop will operate in a trigger mode according to the high level state, so as to send the start signal of physical destruction to the standby power module.

In one embodiment of the present invention, the data storage device further includes a micro switch, the micro switch is arranged next to the device end connector, the host further includes a baffle, the baffle is arranged next to the host end connector, the micro switch includes a The switch handle, a common terminal, a normally closed terminal and a normally open terminal, the trigger includes a signal input terminal, the common terminal connects the signal input terminal and a power supply, the normally closed terminal is grounded, the normally open terminal is open, and the trigger is a low Level-triggered trigger; when the device-side connector of the data storage device is plugged into the host-side connector of the host, the switch handle of the micro switch will push against the baffle and be pressed, and the common terminal will be controlled to connect Normally, the level state of a signal on the signal input end will be pulled up to a high level state by the power supply, and the flip-flop operates in a normal mode according to the high level state of the signal input end, prohibiting the sending entity from destroying Start the signal to the backup power supply module; when the device-side connector of the data storage device is pulled out from the host-side connector of the host, the switch handle will be released from the baffle, and the common terminal is controlled to be connected to the normally closed terminal, and the signal The input terminal is grounded through the common contact and the normally closed terminal, and the level state of the signal on the signal input terminal will be pulled down to a low level state by the ground, and the flip-flop operates in a trigger mode according to the low level state of the signal input terminal , to send an activation signal of physical destruction to the backup power module.

In one embodiment of the present invention, the data storage device further includes a micro switch, the micro switch is arranged next to the device end connector, the host further includes a baffle, the baffle is arranged next to the host end connector, the micro switch includes a The switch handle, a common terminal, a normally closed terminal and a normally open terminal, the trigger includes a signal input terminal, the common terminal connects the signal input terminal and a power supply, the normally closed terminal is open, the normally open terminal is grounded, and the trigger is a high Level-triggered trigger; when the device-side connector of the data storage device is plugged into the host-side connector of the host, the switch handle of the micro switch will push against the baffle and be pressed, and the common terminal is controlled to be connected to the Normally open terminal, the signal input terminal is grounded through the common contact point and the normally open terminal, the level state of a signal on the signal input terminal will be pulled down to a low level state by the ground, and the flip-flop operates according to the low level state of the signal input terminal In a normal mode, it is forbidden to send the activation signal of physical destruction to the backup power supply module; when the device-side connector of the data storage device is pulled out from the host-side connector of the host, the switch handle will be released from the baffle for a total of The terminal is controlled to be connected to the normally closed terminal, the level state of the signal on the signal input terminal will be pulled up to a high level state by the power supply, and the flip-flop operates in a trigger mode according to the high level state of the signal input terminal, To send an activation signal of physical destruction to the backup power module.

In one embodiment of the present invention, the data storage device is arranged in an external box, the external box includes an external connector, the device end connector of the data storage device is electrically connected to the external connector, the host includes a slot, and the slot A host end connector is provided inside, the data storage device is plugged into the host end connector of the host through the external connector of the external box, and the device end connector of the data storage device is connected to the host end of the host through the external connector of the external box When the external connector of the external box is pulled out from the host terminal connector in the slot of the host, the trigger will be triggered to send an activation signal of physical destruction to the backup power module, and the backup power module Output a high voltage to the flash memory according to the starting signal of physical destruction, and the flash memory will be destroyed by the high voltage.

In one embodiment of the present invention, the data storage device is disposed in an external box, the external box includes an external connector, the device end connector of the data storage device is electrically connected to the external connector, the host includes a slot, and the host end is connected to the external connector. The device is arranged on a bottom plate inside the slot, and the data storage device is plugged into the host end connector of the slot of the host through the external connector of the external box; the data storage device further includes a micro switch, and the micro switch is arranged on the Next to the external connector, the micro switch includes a switch handle, a common terminal, a normally closed terminal and a normally open terminal. The switch handle is protruding from the external box, and the trigger includes a signal input terminal, and the common terminal is connected to the signal input end and a power supply, the normally closed end is grounded, the normally open end is open, and the trigger is a trigger triggered by a low level; when the external box is pushed into the slot of the host, the external connector is plugged into the host end connector At this time, the switch handle of the micro switch will be pressed against the bottom plate of the slot, the common terminal will be controlled to be connected to the normally open terminal, and the level state of a signal on the signal input terminal will be pulled up to a level by the power supply. In the high level state, the flip-flop operates in a normal mode according to the high level state of the signal input terminal, prohibiting sending the start signal of physical destruction to the backup power module; When the terminal connector is pulled out, the switch handle will be released from the bottom plate of the slot, the common terminal is controlled to be connected to the normally closed terminal, the signal input terminal is grounded through the common contact point and the normally closed terminal, and the signal input terminal is connected to the normal closed terminal. The level state of the signal will be grounded and pulled down to a low level state, and the flip-flop operates in a trigger mode according to the low level state, so as to send an activation signal of physical destruction to the backup power supply module.

In one embodiment of the present invention, the data storage device is disposed in an external box, the external box includes an external connector, the device end connector of the data storage device is electrically connected to the external connector, the host includes a slot, and the host end is connected to the external connector. The device is arranged on a bottom plate inside the slot, and the data storage device is plugged into the host terminal connector of the slot of the host through the external connector of the external box. The data storage device further includes a micro switch, and the micro switch is arranged on the Next to the external connector, the micro switch includes a switch handle, a common terminal, a normally closed terminal and a normally open terminal. The switch handle is protruding from the external box, and the trigger includes a signal input terminal, and the common terminal is connected to the signal input end and a power supply, the normally closed end is open, the normally open end is grounded, and the trigger is a trigger triggered by a high level; when the external box is pushed into the slot of the host, the external connector is plugged into the host end connector At this time, the switch handle of the micro switch will push against the bottom plate inside the slot and be pressed, the common terminal is controlled to be connected to the normally open terminal, the signal input terminal is grounded through the common contact point and the normally open terminal, and a signal on the signal input terminal The level state of the trigger will be grounded and pulled down to a low level state, and the flip-flop operates in a normal mode according to the low level state of the signal input terminal, and it is forbidden to send the start signal of physical destruction to the backup power module; when the slave of the external box When the external connector is pulled out from the host end connector in the slot of the host, the switch handle will be released from the bottom plate of the slot, the common end is connected to the normally closed end, and the level of the signal on the signal input end The state is pulled up to a high level state by the power supply, and the flip-flop operates in a trigger mode according to the high level state, so as to send an activation signal of entity destruction to the backup power supply module.

In one embodiment of the invention, a system power supply supplies power to the data storage device and charges the backup power unit.

In an embodiment of the present invention, when the system power supply is cut off, the backup power supply module supplies power to the trigger.

In an embodiment of the invention, the flip-flop is a flip-flop.

In one embodiment of the present invention, the trigger is preset to a disabled state, and when the host sends a security start command to the data storage device, the controller of the data storage device enables the trigger to start the trigger according to the security start command. Self-destruction function of data storage device.

The advantage of the present invention is that when the data storage device is pulled out from the host computer, a self-destruction function will be activated to output a high voltage to the flash memory to achieve the purpose of destroying the flash memory through high voltage. Therefore, when an unauthorized person pulls the data storage device away from the host, the data storage device will self-destruct the flash memory to avoid leakage of important data stored in the flash memory.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will give a brief introduction to the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1: A circuit configuration diagram of an embodiment of the data storage device of the present invention.

Fig. 2: Circuit configuration diagram of the standby power supply module of the present invention.

Fig. 3: A circuit configuration diagram of another embodiment of the data storage device of the present invention.

Fig. 4: A circuit configuration diagram of another embodiment of the data storage device of the present invention.

Fig. 5: A circuit configuration diagram of another embodiment of the data storage device of the present invention.

Fig. 6: A circuit configuration diagram of another embodiment of the data storage device of the present invention.

Fig. 7: Circuit structure diagram of an embodiment of the micro switch of the present invention.

Fig. 8: A circuit configuration diagram of another embodiment of the micro switch of the present invention.

Fig. 9: A circuit configuration diagram of another embodiment of the data storage device of the present invention.

Among them, 100-host; 101-host; 11-slot; 111-backplane; 12-baffle; 121-system power supply; 122-start command of safety protection; 131-host pin; 132-first specific host pin; 133-second specific host pin; 200-data storage device; 201-data storage device; 21-controller; 22-flash memory; 23-device connector; 230-closed loop; 231-device pin; 232-first specific device pin; 233-second specific device pin; 24-backup power module; 241-battery pack; 243-Switcher; 245-Booster; 2411-Discharge energy; 246-High voltage; 25-Trigger; 250-Entity destruction start signal; Bit signal; 26-system power unit; 271-resistor; 272-resistor; 28-micro switch; 280-switch handle; 281-common terminal; 282-normally closed terminal; 283-normally open terminal; ; 285-normally closed end; 286-normally open end; 300-external box; 301-external box; 31-external connector.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to FIG. 1 , which is a circuit diagram of an embodiment of the data storage device of the present invention. As shown in FIG. 1 , the data storage device 200 of the present invention can also be a solid state disk (SSD), which will be applied in a host 100 (such as a computer host) as a medium for the host 100 to store data.

The host 100 includes a host connector 13 . The data storage device 200 includes a controller 21 , a plurality of flash memories 22 , a device connector 23 , a backup power module 24 , a trigger 25 and a system power unit 26 . The controller 21 is connected to the flash memory 22 , the device connector 23 and the trigger 25 , and the backup power module 24 is connected to the trigger 25 . The data storage device 200 is plugged into the host-side connector 13 of the host 100 through the device-side connector 23 , and the host 100 and the data storage device 200 use the connectors 13 , 23 to transmit data. The host-side connector 13 and the device-side connector 23 can also be SATA, PCIe or USB interface connectors. The flip-flop 25 of the present invention is a circuit composed of a plurality of logic gates, such as flip-flops. The system power supply unit 26 is used to receive a system power supply 121 provided by the host 100, and convert the system power supply 121 into a voltage required for the operation of the data storage device 200, so as to supply power to the controller 21, a plurality of flash memories 22 and flip-flops 25 and For charging the backup power module 24 .

When an unauthorized person pulls the data storage device 200 from the host connector 13 of the host 100 , the trigger 25 will be triggered to send an activation signal 250 for physical destruction to the backup power module 24 . The backup power module 24 executes the physical destruction according to the physical destruction start signal 250 , and outputs a high voltage 246 to the controller 21 and the flash memory 22 , and the controller 21 and the flash memory 22 will be destroyed by the high voltage 246 . In the present invention, the high voltage 246 is a voltage much higher than the working voltage of the data storage device 200 .

Further referring to FIG. 2 , the backup power module 24 includes a battery pack 241 , a switch 243 and a booster 245 , and the switch 243 is connected between the battery pack 241 and the booster 245 . When the host 100 is in normal operation, the system power unit 26 will charge the battery pack 241 of the backup power module 24 . When the backup power supply module 24 receives the activation signal 250 of physical destruction sent by the trigger 25, the physical destruction activation signal 250 will control the switch 243 to be turned on, and then the discharge energy 2411 of the battery pack 241 will be turned on The switch 243 is transmitted to the booster 245 , and the booster 245 boosts the discharge energy 2411 to generate a high voltage 246 . The booster 245 outputs a high voltage 246 to the controller 21 and the flash memory 22 to destroy the controller 21 and the flash memory 22 . In one embodiment of the present invention, the switch 243 is designed as an NMOS metal-oxide-semiconductor transistor or an NPN bipolar transistor, and the activation signal 250 for physical destruction is a high-level activation signal; or, in another embodiment of the present invention, The switch 243 is designed as a PMOS metal-oxide-semiconductor transistor or a PNP bipolar transistor, and the activation signal 250 for physical destruction is a low-level activation signal.

In the present invention, the flip-flop 25 is preset to a disabled state. When the data storage device 200 is assembled in the host computer 100 for the first time, if the administrator of the data storage device 200 wants to protect the data stored in the data storage device 200 , a security protection start-up procedure is required. The administrator sends a security protection activation command 122 to the data storage device 200 through the host computer 100 . The controller 21 of the data storage device 200 enables the trigger 25 after receiving the start command 122 of the security protection, so as to enable the self-destruction function of the data storage device 200 . The enabled trigger 25 can accept an external trigger command to execute the physical destruction of the data storage device 200 . On the contrary, when the administrator intends to remove the data storage device 200 from the host 100 , the self-destruction function needs to be disabled. The administrator sends a security protection release command 123 to the data storage device 200 through the host computer 100 . The controller 21 of the data storage device 200 disables the trigger 25 after receiving the release command 123 of the security protection, so as to close the self-destruction function of the data storage device 200 . The disabled trigger 25 will not accept any trigger command.

Next, when the host 100 is operating normally, the system power supply unit 26 can also provide working power to the trigger 25 , and the trigger 25 is kept in a normal working state to monitor whether the data storage device 200 is disconnected from the host 100 at any time. When the host 100 is shut down or the system power supply 121 is cut off, the backup power module 24 will provide the discharge energy 2411 to the trigger 25, and the trigger 25 remains in a standby state. Thus, even if the host computer 100 is in a power-off or power-off state, and an unauthorized person pulls the data storage device 200 away from the host computer 100, the trigger 25 in the standby state can still be triggered to start the program of entity destruction to destroy the controller 21 and flash memory 22.

Please refer to FIG. 3 , which is a circuit diagram of another embodiment of the data storage device of the present invention. As shown in FIG. 3, the host connector 13 of the host 100 of the present invention includes a plurality of host pins 131, 132, 133, and the device connector 23 of the data storage device 200 includes a plurality of device pins 231. , 232, 233. The host pin 131 and the device pin 231 are used as pins for data transmission, grounding or power transmission, and the host pins 132 and 133 and the device pins 232 and 233 can also be idle pins. In this embodiment, the host pin 132 will be defined as a first specific host pin, the host pin 133 will be defined as a second specific host pin, and the device pin 232 will be defined As a first specific device pin, the device pin 233 will be defined as a second specific device pin. Moreover, the first specific host pin 132 is connected with the second specific host pin 133 .

In this embodiment, the flip-flop 25 includes a signal input terminal 251 and a signal output terminal 252 . The signal input terminal 251 is connected to the first specific device terminal pin 232 , and the signal output terminal 252 is connected to the second specific device terminal pin 233 . When the data storage device 200 is plugged into the host connector 13 of the host 100 through the device connector 23, the device pin 231, the first specific device pin 232 and the second specific device pin 233 are electrically connected respectively. The corresponding host pin 131 , the first specific host pin 132 and the second specific host pin 133 are connected. A seal is formed between the signal output terminal 252, the second specific device terminal pin 233, the second specific host terminal pin 133, the first specific host terminal pin 132, the first specific device terminal pin 232 and the signal input terminal 251. Close loop 230 .

In this embodiment, the flip-flop 25 will send a first level signal 253 , such as a high level (Hi) signal, through the signal output terminal 252 . If the device-side connector 23 of the data storage device 200 is inserted into the host-side connector 13 of the host 100, the first level signal 253 will be sent back to the trigger 25 through the closed loop 230; after that, the trigger 25 passes the signal The input end 251 receives the first level signal 253 returned by the closed loop 230, then the level state of a signal on the signal input end 251 will remain in the first level state, such as a high level state, and the flip-flop 25 Operate in a normal mode according to the first level state of the signal input terminal 251 to prohibit sending the physical destruction activation signal 250 to the backup power module 24 . Conversely, if the data storage device 200 has been pulled out from the host 100, the closed loop 230 will not exist, the signal input 251 and the signal output 252 of the flip-flop 25 are open, and the signal input 251 cannot receive the signal output. The first level signal 253 sent by 252; the signal level state of the signal input terminal 251 will change from the first level state to a second level state (Hi→Lo); In the second level state, the operation is in a trigger mode. After being triggered, the flip-flop 25 will send the activation signal 250 of physical destruction to the backup power module 24, so that the backup power module 24 executes the action of physical destruction.

Here, the data storage device 200 of this embodiment uses the trigger 25 to send and receive signals to the host 100 to detect whether the closed loop 230 between the data storage device 200 and the host 100 exists. When it is detected that the closed loop 230 does not exist, it means that the data storage device 200 has been disconnected from the host 100, and the data storage device 200 will perform a self-destruct action.

Please refer to FIG. 4 , which is a circuit diagram of another embodiment of the data storage device of the present invention. As shown in FIG. 4, the host connector 13 of the host 100 includes a plurality of host pins 131, 132, 133, and the device connector 23 of the data storage device 200 includes a plurality of device pins 231, 232. , 233. The host pin 131 and the device pin 231 are used as pins for data transmission, grounding or power transmission, and the host pins 132 and 133 and the device pins 232 and 233 can also be idle pins. In this embodiment, the host pin 132 is defined as a first specific host pin, and the device pin 232 is defined as a first specific device pin. The first specific host pin 132 will be grounded.

The flip-flop 25 of this embodiment is a flip-flop triggered by a high level, which includes a signal input terminal 251 . The signal input terminal 251 is connected to the first specific device terminal pin 232 and connected to a power supply Vcc through a resistor 271 . When the data storage device 200 is plugged into the host connector 13 of the host 100 through the device connector 23, the signal input terminal 251 is grounded through the first specific device pin 232 and the first specific host pin 132, and the signal The level state of a signal on the input terminal 251 will be grounded and pulled down to a low level state, and the flip-flop 25 operates in a normal mode according to the low level state of the signal input terminal 251, and prohibits sending an activation signal of physical destruction 250 to the backup power module 24. Conversely, when the device-side connector 23 of the data storage device 200 has been pulled out from the host-side connector 13 of the host 100, the signal input 251 cannot be grounded through the first specific host-side pin 132 of the host 100, and the signal input The signal level state on the terminal 251 will be pulled up to a high level state by the power supply Vcc, and the flip-flop 25 operates in a trigger mode according to the high level state of the signal input end 231, and the triggered flip-flop 25 sends the entity The destruction activation signal 250 is sent to the backup power module 24, so that the backup power module 24 executes the physical destruction action.

Here, the data storage device 200 in this embodiment detects the signal level of the signal input terminal 251 of the flip-flop 25 to determine whether the signal input terminal 251 is grounded through the host 100 . When it is detected that the signal input terminal 251 of the flip-flop 25 is not grounded through the host 100 , it means that the data storage device 200 has been removed from the host 100 , and the data storage device 200 will perform a self-destruct action.

Please refer to FIG. 5 , which is a circuit diagram of another embodiment of the data storage device of the present invention. As mentioned above, the data storage device 200 in the embodiment of FIG. 1 , FIG. 3 or FIG. 4 is a built-in data storage device, which is directly plugged into the host-end connector 13 of the host 100 . As shown in FIG. 5 , the data storage device 200 of this embodiment is a removable data storage device, which can also be configured in the host 100 through an external box 300 .

The external box 300 includes an external connector 31 . The data storage device 200 is placed inside the external box 300 , and the device end connector 23 of the data storage device 200 is electrically connected to the external connector 31 of the external box 300 . The host 100 includes a slot 11 , and the host connector 13 is disposed at the bottom of the slot 11 . When the external box 300 is pushed into the bottom of the slot 11, the external connector 31 will be inserted into the host end connector 13 in the slot 11, then the device end connector 23 of the data storage device 200 passes through the external connector 31 to be electrically connected to the host connector 13 of the host 100 .

Similarly, the removable data storage device 200 of this embodiment can use the trigger 25 to send and receive signals to the host 100 to detect whether the closed loop 230 between the data storage device 200 and the host 100 exists. When it is detected that the closed loop 230 does not exist, the removable data storage device 200 has been pulled out from the host 100, and the removable data storage device 200 will perform a self-destruct action.

Alternatively, the removable data storage device 200 of this embodiment determines whether the signal input end 251 of the flip-flop 25 is grounded through the host 100 by detecting the signal level of the signal input end 231 of the flip-flop 25 . When the signal input terminal 251 of the flip-flop 25 is not grounded through the host 100 , the removable data storage device 200 has been pulled out from the host 100 , and the removable data storage device 200 will perform a self-destruct action.

Please refer to FIG. 6 , which is a circuit diagram of another embodiment of the data storage device of the present invention. Compared with the data storage device 200 in the embodiment of FIG. 1 , the data storage device 201 of this embodiment further includes a micro switch 28 . The micro switch 28 has a switch handle 280 and is disposed beside the device end connector 23 . Moreover, the host 101 in this embodiment further includes a baffle 12 , and the baffle 12 is disposed beside the host connector 13 .

Likewise, the flip-flop 25 is preset to a disabled state. When the data storage device 201 is assembled in the host computer 101 for the first time, if the manager of the data storage device 201 wants to protect the data stored in the data storage device 201 , it needs to carry out a security protection start-up procedure. The administrator sends a security protection activation command 122 to the data storage device 201 through the host computer 101 . After the controller 21 of the data storage device 201 receives the start command 122 of the security protection, the trigger 25 is enabled to enable the self-destruction function of the data storage device 201 . The enabled trigger 25 can accept an external trigger command to execute the physical destruction of the data storage device 201 . Conversely, before the administrator intends to pull the data storage device 201 away from the host 101 , the self-destruction function needs to be disabled. The administrator sends a security protection release command 123 to the data storage device 201 through the host computer 101 . After the controller 21 of the data storage device 201 receives the command 123 for releasing the security protection, it disables the trigger 25 so as to close the self-destruction function of the data storage device 201 . The disabled trigger 25 will not accept any trigger command.

Next, in an embodiment of the present invention, the flip-flop 25 is a low-level flip-flop. As shown in FIG. 7 , the microswitch 28 includes a common terminal (com) 281, a normally closed terminal (normal close, NC) 282 and a normally open terminal (normal open, NO) 283, and the common terminal 281 is connected to the signal input terminal. 251 and the power supply Vcc are connected through a resistor 272, the normally closed terminal 282 is grounded, and the normally open terminal 283 is open. By pressing the switch handle 280 or releasing the switch handle 280 , the connection of the common terminal 281 to the normally open terminal 283 or the normally closed terminal 282 is controlled. When the device-side connector 23 of the data storage device 201 is plugged into the host-side connector 13 of the host 101, the switch handle 280 of the micro switch 28 will push against the baffle plate 11 and be pressed, and the common terminal 281 will be pressed. If the control is connected to the normally open terminal 283, the level state of a signal on the signal input terminal 251 will be pulled up to a high level state by the power supply Vcc, and the flip-flop operates according to the high level state of the signal input terminal 251. In a normal mode, it is prohibited to send the activation signal 250 for physical destruction to the backup power module 24 . Conversely, when the device-side connector 23 of the data storage device 201 has been pulled out from the host-side connector 13 of the host computer 101, the originally pressed switch handle 280 will be released from the baffle plate 11, and the common terminal 281 will be controlled to be connected to the normally closed terminal 282, and the signal input terminal 251 is grounded through the common contact 281 and the normally closed terminal 282, then the level state of the signal on the signal input terminal 251 will be grounded and pulled down to a low level state, the flip-flop 25 operates in a trigger mode according to the low level state of the signal input terminal 251, so as to send the start signal 250 of physical destruction to the backup power module 24, so that the backup power module 24 executes the action of physical destruction.

Alternatively, in another embodiment of the present invention, the flip-flop 25 may also be a flip-flop triggered by a high level. As shown in FIG. 8 , the microswitch 28 includes a common terminal (com) 284, a normally closed terminal (normal close, NC) 285 and a normally open terminal (normal open, NO) 286, and the common terminal 284 is connected to the signal input terminal. 251 and the power supply Vcc are connected through a resistor 272, the normally closed terminal 285 is open, and the normally open terminal 286 is grounded. By pressing the switch handle 280 or releasing the switch handle 280 , the connection of the common terminal 280 to the normally open terminal 286 or the normally closed terminal 285 is controlled. When the device-end connector 23 of the data storage device 201 is plugged into the host-end connector 13 of the host 101, the switch handle 280 of the micro switch 28 will push against the baffle 11 and be pressed, and the common terminal 284 will be connected To the normally open terminal 286, the signal input terminal 251 is grounded through the common contact 284 and the normally open terminal 286, then the level state of a signal on the signal input terminal 251 will be grounded and pulled down to a low level state, and the flip-flop 25 The low level state of the signal input terminal 251 operates in a normal mode, and prohibits sending the physical destruction activation signal 250 to the backup power module 24 . Conversely, when the device-end connector 23 of the data storage device 201 is pulled out from the host-end connector 13 of the host 101, the originally pressed switch handle 280 will be released from the baffle plate 11, and the common terminal 284 will be controlled. Connected to the normally closed terminal 285, the signal level state of the signal input terminal 251 will be pulled up to a high level state by the power supply Vcc, and the flip-flop operates in a trigger mode according to the high level state of the signal input terminal 251, The activation signal 250 for physical destruction is sent to the backup power module 24, so that the backup power module 24 executes the action of physical destruction.

In this way, the data storage device 201 in this embodiment is pressed or released by the switch of the micro switch 28 to detect whether the data storage device 201 is pulled out from the host computer 101, and then decide whether to order the backup power module 24 to execute the physical destruction Actions.

Please refer to FIG. 9 , which is a circuit diagram of another embodiment of the data storage device of the present invention. As mentioned above, the data storage device 201 in the embodiment of FIG. 6 is a built-in data storage device, which is directly plugged into the host end connector 13 of the host 101 . As shown in FIG. 9 , the data storage device 201 of this embodiment is a removable data storage device, which can also be configured in the host 101 through an external box 301 .

The external box 301 includes an external connector 31 . The data storage device 201 is placed inside the external box 301 , and the device end connector 23 of the data storage device 201 is electrically connected to the external connector 31 of the external box 301 . The host 101 includes a slot 11 , and the host connector 13 is disposed on the bottom plate 111 of the slot 11 . When the external box 301 is pushed into the bottom of the slot 11, the external connector 31 will be inserted into the host end connector 13 in the slot 11, then the device end connector 23 of the data storage device 201 passes through the external connector 31 to be electrically connected to the host connector 13 of the host 101 .

Furthermore, the micro switch 28 of the data storage device 201 is disposed beside the external connector 31 , and the switch handle 280 thereof protrudes outside the external box 301 . When the external box 301 was pushed into the bottom of the slot 11 of the host 101, the switch handle 280 of the micro switch 28 would be pressed against the bottom plate 111 of the slot 11; When 11 is pulled away, the micro switch 28 will be away from the bottom plate 111 of the slot 11 and the originally pressed switch handle 280 will be released.

Further referring to FIG. 7 , when the trigger 25 is a low-level trigger, if the external connector 31 of the external box 301 is firmly inserted on the host end connector 13 of the host 101, the microswitch 28 The switch handle 280 will be pressed against the bottom plate 111 of the slot 11, and the common terminal 281 will be controlled to be connected to the normally open terminal 283. Then, the level state of the signal on the signal input terminal 251 will be pulled by the power supply Vcc Raised to a high level state, the flip-flop operates in a normal mode according to the high level state of the signal input terminal 251 , prohibiting sending the start signal 250 for physical destruction to the backup power module 24 . Conversely, if the external box 301 is pulled away from the slot 11 of the host 101, the originally pressed switch handle 280 will be released from the bottom plate 111, and the common terminal 281 will be controlled to be connected to the normally closed terminal 282, and the signal The input terminal 251 is grounded through the common contact 281 and the normally closed terminal 282, then the level state of the signal on the signal input terminal 251 will be pulled down to a low level state by the ground, and the flip-flop 25 is based on the low level of the signal input terminal 251 The bit state is operated in the trigger mode, so as to send the start signal 250 of physical destruction to the backup power module 24, so that the backup power module 24 executes the action of physical destruction.

Or, referring to FIG. 7 further, when the trigger 25 is a trigger triggered by a high level, if the external connector 31 of the external box 301 is firmly inserted on the host end connector 13 of the host 101, the micro-motion The switch handle 280 of the switch 28 will push against the bottom plate 111 of the slot 11 and be pressed, the common terminal 284 will be controlled to be connected to the normally open terminal 286, and the signal input terminal 251 will be grounded through the common contact 284 and the normally open terminal 286, then, The level state of the signal on the signal input terminal 251 will be grounded and pulled down to a low level state, and the flip-flop 25 operates in a normal mode according to the low level state of the signal input terminal 251, and prohibits sending the start signal 250 for entity destruction to Standby power supply module 24. Conversely, if the external box 301 is pulled away from the slot 11 of the host 101, the originally pressed switch handle 280 will be released from the bottom plate 111, and the common terminal 284 will be controlled to be connected to the normally closed terminal 285, and the signal The level state of the signal at the input terminal 251 will be pulled up to a high level state by the power supply Vcc, and the flip-flop operates in the trigger mode according to the high level state of the signal input terminal 251, so as to send the start signal 250 for physical destruction to the standby power supply module 24, and make the backup power supply module 24 execute the action of entity destruction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (13)

1. A data storage device with a self-destruction function, characterized in that it comprises: a controller; a plurality of flash memory; a device-side connector through which the data storage device is plugged into a host-side connector of a host; a trigger; and A backup power module, the controller is respectively connected to the flash memory, the device connector, the trigger and the backup power module, and the trigger is connected to the backup power module; When the device-side connector of the data storage device is pulled out from the host-side connector of the host, the trigger is triggered to send an activation signal of physical destruction to the backup power module, The backup power supply module outputs a high voltage to the flash memory according to the start signal of the physical destruction, and the flash memory will be destroyed by the high voltage. 2. The data storage device according to claim 1, wherein the backup power module includes a battery pack, a switch and a booster, and the trigger is connected to the battery pack and the switch , the booster is connected between the switch and the flash memory, and when the trigger sends the physical destruction activation signal to the backup power module, the physical destruction activation signal controls the switch The switch is turned on, and a discharge energy of the battery pack is transmitted to a booster through the switcher, and the booster outputs the high voltage to the flash memory. 3. The data storage device according to claim 1, wherein the host-side connector of the host includes a first specific host-side pin and a second specific host-side pin, the first The specific host pin and the second specific host pin are connected together, and the device connector of the data storage device includes a first specific device pin corresponding to the first specific host pin and a second specific device pin corresponding to the second specific host pin, the flip-flop includes a signal input and a signal output, the signal input is connected to the first specific device terminal pin, the signal output terminal is connected to the second specific device terminal pin; when the data storage device is plugged together with the host terminal connector of the host through the device terminal connector, the The first specific device terminal pin is electrically connected to the first specific host terminal pin, the second specific device terminal pin is electrically connected to the second specific host terminal pin, the signal output terminal, the A closed loop is formed between the second specific device pin, the second specific host pin, the first specific host pin, the first specific device pin, and the signal input terminal ; if the flip-flop sends a first level signal from the signal output terminal and can receive the first level signal from the signal input terminal, the level of a signal on the signal input terminal The bit state will be the first bit state upon which the flip-flop operates in a normal mode based on the first bit state of the signal input to inhibit sending the physical destruction enable signal to the standby Power module; if the trigger sends the first level signal from the signal output terminal and does not receive the first level signal from the signal input terminal, the signal input terminal on the The level state of the signal will change from the first level state to a second level state, and the flip-flop operates in a trigger mode according to the second level state of the signal input terminal to send the An activation signal for the destruction of the above entity is sent to the backup power module. 4. The data storage device according to claim 1, wherein the flip-flop is a flip-flop triggered by a high level, and the host end connector of the host includes a grounded first specific host end Pin position, the device end connector of the data storage device includes a first specific device end pin corresponding to the first specific host end pin, the trigger includes a signal input end, the signal The input terminals are respectively connected to a power supply and the pins of the first specific device terminal. When the data storage device is plugged into the host terminal connector of the host computer through the device terminal connector, the signal The input terminal is grounded through the first specific device terminal pin and the first specific host terminal pin, the level state of a signal on the signal input terminal will be grounded and pulled down to a low level state, The flip-flop operates in a normal mode according to the low level state, so as to prohibit sending the activation signal of the physical destruction to the backup power module; when the device end connector of the data storage device is connected to the When the host end connector of the host is pulled out, the level state of the signal on the signal input terminal will be pulled up to a high level state by the power supply, and the flip-flop will be in a high level state according to the The high level state is operated in a trigger mode, so as to send the activation signal of the physical destruction to the backup power module. 5. The data storage device according to claim 1, wherein the data storage device further comprises a micro switch, the micro switch is arranged next to the device end connector, and the host further comprises a The baffle, the baffle is arranged next to the host end connector, the micro switch includes a switch handle, a common connection end, a normally closed end and a normally open end, the trigger includes a signal input end, The common terminal is connected to the signal input terminal and a power supply, the normally closed terminal is grounded, the normally open terminal is open, and the trigger is a trigger triggered by a low level; when the data storage device When the device-end connector is plugged into the host-end connector of the host, the switch handle of the micro switch will push against the baffle and be pressed, and the common terminal will be The control is connected to the normally open end, the level state of a signal on the signal input end will be pulled up to a high level state by the power supply, and the flip-flop is based on the high level state of the signal input end. bit state to operate in a normal mode, prohibiting sending the activation signal of the physical destruction to the backup power module; when the device-side connector of the data storage device is unplugged from the host-side connector of the host When leaving, the switch handle will be released from the baffle, the common terminal is controlled to be connected to the normally closed terminal, and the signal input terminal is connected via the common terminal and the normally closed terminal. grounded, the level state of the signal on the signal input terminal will be pulled down to a low level state by ground, and the flip-flop operates in a trigger mode according to the low level state of the signal input terminal , so as to send an activation signal for destroying the entity to the backup power module. 6. The data storage device according to claim 1, wherein the data storage device further comprises a micro switch, the micro switch is arranged next to the device end connector, and the host further comprises a The baffle, the baffle is arranged next to the host end connector, the micro switch includes a switch handle, a common connection end, a normally closed end and a normally open end, the trigger includes a signal input end, The common terminal is connected to the signal input terminal and a power supply, the normally closed terminal is open, the normally open terminal is grounded, and the trigger is a trigger triggered by a high level; when the data storage device When the device-end connector is plugged into the host-end connector of the host, the switch handle of the micro switch will push against the baffle and be pressed, and the common terminal will be controlled connected to the normally open terminal, the signal input terminal is grounded through the common contact point and the normally open terminal, the level state of a signal on the signal input terminal will be grounded and pulled down to a low level state, The flip-flop operates in a normal mode according to the low level state of the signal input terminal, and prohibits sending the activation signal of the physical destruction to the backup power module; when the device terminal of the data storage device When the connector is pulled out from the host end connector of the host, the switch handle will be released from the baffle, the common terminal is controlled to be connected to the normally closed terminal, and the The level state of the signal on the signal input end will be pulled up to a high level state by the power supply, and the flip-flop operates in a trigger mode according to the high level state of the signal input end, An activation signal for sending the entity to be destroyed is sent to the backup power module. 7. The data storage device according to claim 1, wherein the data storage device is arranged in an external box, the external box includes an external connector, and the device end of the data storage device is connected to The device is electrically connected to the external connector, the host includes a slot, and the host end connector is arranged inside the slot, and the data storage device passes through the external connector of the external box plugged into the host connector of the host, and the device connector of the data storage device is electrically connected to the host connector of the host through the external connector of the external box. connection, when the external connector of the external box is pulled out from the host-side connector in the slot of the host, the trigger will be triggered to send a physical destruction An activation signal is sent to the backup power module, and the backup power module outputs a high voltage to the flash memory according to the activation signal of the physical destruction, and the flash memory will be destroyed by the high voltage. 8. The data storage device according to claim 1, wherein the data storage device is arranged in an external box, the external box includes an external connector, and the device end of the data storage device is connected to The device is electrically connected to the external connector, the host includes a slot, the host connector is arranged on a bottom plate inside the slot, and the data storage device passes through the external box. The external connector is plugged into the host end connector of the slot of the host; the data storage device further includes a micro switch, and the micro switch is arranged beside the external connector, so that The micro switch includes a switch handle, a common terminal, a normally closed terminal and a normally open terminal, the switch handle protrudes outside the external box, the trigger includes a signal input terminal, the common terminal The terminal is connected to the signal input terminal and a power supply, the normally closed terminal is grounded, the normally open terminal is open, and the trigger is a trigger triggered by a low level; when the external box is pushed into the host in the slot so that when the external connector is plugged into the host connector, the switch handle of the micro switch will push against the bottom plate of the slot and be pressed, The common terminal will be controlled to be connected to the normally open terminal, the level state of a signal on the signal input terminal will be pulled up to a high level state by the power supply, and the flip-flop will be in a high level state according to the The high level state of the signal input terminal operates in a normal mode, prohibiting sending the activation signal of the physical destruction to the backup power module; When the host end connector in the slot is pulled out, the switch handle will be released from the bottom plate of the slot, and the common connection end is controlled to be connected to the normally closed end, The signal input terminal is grounded through the common contact point and the normally closed terminal, the level state of the signal on the signal input terminal will be pulled down to a low level state by grounding, and the flip-flop is based on The low level state is operated in a trigger mode, so as to send the activation signal of the physical destruction to the backup power module. 9. The data storage device according to claim 1, wherein the data storage device is arranged in an external box, the external box includes an external connector, and the device end of the data storage device is connected to The device is electrically connected to the external connector, the host includes a slot, the host connector is arranged on a bottom plate inside the slot, and the data storage device passes through the external box. The external connector is plugged into the host end connector of the slot of the host, and the data storage device further includes a micro switch, and the micro switch is arranged beside the external connector, so that The micro switch includes a switch handle, a common terminal, a normally closed terminal and a normally open terminal, the switch handle protrudes outside the external box, the trigger includes a signal input terminal, the common terminal The terminal is connected to the signal input terminal and a power supply, the normally closed terminal is open, the normally open terminal is grounded, and the trigger is a trigger triggered by a high level; when the external box is pushed into the host When the external connector is plugged into the host-side connector, the switch handle of the micro switch will push against the bottom plate inside the slot and be pressed. , the common terminal is controlled to be connected to the normally open terminal, the signal input terminal is grounded through the common terminal and the normally open terminal, and the level state of a signal on the signal input terminal will be grounded and pulled falling to a low level state, the flip-flop operates in a normal mode according to the low level state of the signal input terminal, and prohibits sending the activation signal of the entity destruction to the backup power module; when the When the external connector of the external box is pulled out from the host end connector in the slot of the host, the switch handle will be released from the bottom plate of the slot, The common terminal is connected to the normally closed terminal, the level state of the signal on the signal input terminal will be pulled up to a high level state by the power supply, and the flip-flop will and operate in a trigger mode in order to send the activation signal of the physical destruction to the backup power module. 10. The data storage device of claim 1, wherein a system power supply supplies power to the data storage device and charges the backup power unit. 11. The data storage device according to claim 10, wherein when the system power supply is cut off, the backup power supply module supplies power to the flip-flop. 12. The data storage device according to claim 1, wherein the flip-flop is a flip-flop. 13. The data storage device according to claim 1, wherein the trigger is preset to a disabled state, and when the host sends a security start command to the data storage device, the The controller of the data storage device enables the trigger to activate the self-destruction function of the data storage device according to the activation command of the security protection.