JP2001134853A - Burglarproof device for electronic device provided with card slot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burglarproof device for electronic device provided with card slot. SOLUTION: This burglarproof device for an electronic device provided with a card slot is equipped with a transmitter capable of transmitting a radio signal and a receiver capable of receiving the radio signal. In the case of use, the transmitter is placed inside the card slot of an electronic device and a user carries the receiver with him. When the user gets away from the electronic device provided with a card slot for a certain distance and the receiver can not receive the signal transmitted by the transmitter, such a state is reported to the user by the alarm of the receiver.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing theft of an electronic device having a card slot.

[0002]

2. Description of the Related Art There has never been an effective means of preventing theft of a notebook personal computer, so that a considerably high theft rate cannot be reduced, and card slots are used in most electronic dictionaries, digital cameras and digital videos, for example. Alternatively, a cartridge is provided, and the same applies to a frequency spectrograph and an oscilloscope. Therefore, such a high-priced, lightweight, and compact electronic device needs to be provided with an anti-theft device. However, existing anti-theft devices have been difficult to apply to such lightweight and compact electronic devices. This is because the anti-theft device is difficult to attach to a small electronic device by adding it. Therefore, there is a need for an anti-theft device that does not require retrofitting the electronic device or is very convenient in use.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a kind of anti-theft device, which does not require a user to retrofit an electronic device having a card slot, but directly utilizes the card slot. By installing the launcher of the anti-theft device, the receiver can warn the user when the distance between the electronic device having the card slot and the receiver exceeds a certain distance.

It is another object of the present invention to provide a kind of anti-theft device having an anti-theft function even when the launcher of the anti-theft device is stolen.

[0005]

The invention according to claim 1 is an anti-theft device used for preventing theft of an electronic device having a card slot, wherein the device is a launcher, the outside is a card-type shell, and the protection is provided. A fire switch that is inserted into a card slot of the electronic device to be switched and that switches between the anti-theft function activation state and the power-off state of the launcher in the shell;
A circuit device including an encoder, a radio signal transmitter, and a launch antenna is provided inside the shell, and a launch control unit for controlling the circuit device is provided. When the launcher is in an activated state of the anti-theft function, a launch code is provided by the encoder. After encoding, to emit as a wireless signal from a launch antenna via a wireless signal launcher, the launcher, which is a receiver, a decoder, a wireless signal receiver, a receiving antenna, an alarm, a circuit device including a changeover switch and A receiving control unit for controlling the circuit device, wherein the changeover switch switches between a state in which the anti-theft function of the receiver is activated or a state in which the power is turned off, and a receiving antenna receives an external radio signal and transmits the radio signal to the radio signal receiver. An electronic device having a card slot, comprising: the receiver described above; It is the flame prevention device. Claim 2
The invention according to claim 1, wherein the launcher further comprises a firing sequence circuit for controlling the number of firings of the firing code per unit time, the electronic device having a card slot according to claim 1, being prevented from being stolen. Equipment. The invention according to claim 3 is characterized in that the changeover switch further has a function of switching the receiver to a search state, and when the launcher is in the anti-theft function activation state and the receiver is in this search state, the launcher 2. The anti-theft device for an electronic device having a card slot according to claim 1, wherein an alarm device of the receiver generates an alarm signal when the firing code emitted by the receiver is received by the receiver. The invention according to claim 4 is characterized in that when the launcher leaves the card slot of the electronic device to be protected, the firing switch turns off the power, and the electronic device with the card slot according to claim 1 is characterized in that: The anti-theft device.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention is an anti-theft device used in an electronic device having a card slot, which comprises a transmitter capable of emitting a radio signal and a receiver capable of receiving a radio signal, and is used in use. The launcher is placed in the card slot of the electronic device and the user carries the receiver or attaches it to another setting area. If the receiver is unable to receive the launcher's firing signal a certain distance from the electronic device with the card slot, the receiver's alarm will notify the user.

The launch switch of the launcher of the present invention may be manual and controlled by the user or may be of the automatic switch type, in which case the launcher is activated when the launcher is inserted into the card slot of the electronic device, and vice versa. When the card is removed from the card slot, the firing switch is turned off. Naturally, manual and automatic firing switches can be employed.

[0008]

FIG. 1 is a diagram showing the state of use of the present invention. The anti-theft device 10 of the present invention is designed for an electronic device 90 having a card slot. In this embodiment, the electronic device 90 having a card slot is a notebook computer 91. Electronic device anti-theft device 1 having a card slot
0 comprises a launcher 20 capable of emitting a wireless signal and a receiver 30 capable of receiving a wireless signal. In use, launcher 20 is placed in card slot 92 of the electronic device, and user 95 carries receiver 90, for example, in pocket 96. When the user 95 is away from the notebook computer 91 by a certain distance and the receiver 30 cannot receive the emission signal of the launcher 20, the alarm 35 (see FIG. 9) of the receiver 30 notifies the user 95.

FIGS. 2, 3 and 8 show the launcher 20 of the present invention.
The structure and function of are shown. The outside of the launcher 20 is a flexible disk shell 25, which is convenient for inserting the electronic device 90 for preventing theft into the card slot 92. The flexible disk shell 25 is provided with a firing switch 27, and the firing switch 27
Used to activate the anti-theft function (that is, turn on the power) or switch off the power. According to the present embodiment, since the electronic device 90 is a notebook computer 91, the outer shape of the launcher 20 is a general 3.5-inch flexible disk, and the launch switch 27 is a type imitating a write protect device. . One elastic piece 271 is provided on the board 201, and one end of the elastic piece 271 is brought into contact with or not in contact with the board 201 by the front and rear operation of the firing switch 27 to switch the power supply.

In a flexible disk shell 25, an encoder 22, a radio signal transmitter 23, a transmission antenna 24
And a launch control unit 21 for controlling the above circuit device. When the launcher 20 is in the activated state, the launch code 29 is encoded by the encoder 22 and is emitted as a wireless signal from the wireless signal emitter 23 via the emission antenna 24. In order to save power, the launcher 20 is provided with a firing sequence circuit 28 that controls the number of firings of the firing code 29 in each unit time. The launch control unit 21 employs a simple microprocessor or is composed of a logic circuit.
Since the control of the emission of the radio signal is a known technique, a detailed description thereof will be omitted.

FIG. 4 shows a second embodiment of the firing switch 27. When the flexible disk type launcher 26 is inserted into the card slot 92 (flexible disk slot in this embodiment) of the notebook computer 91, the push piece 261 imitating the 3.5 flexible disk shutter moves by the operation of the flexible disk drive. Then, the pressing piece 261 comes into contact with the conductive switch section 202 on the upper surface of the substrate 201 to form conductivity. At this time, the pressing piece 261 is made of a conductive material, or a conductive material is applied to a portion that comes into contact with the conductive switch section 202. You. The conductive state is released when the flexible disk type launcher 26 is pulled out.

FIGS. 5 and 6 show the firing switch 27.
This is a third embodiment. According to this embodiment, the firing switch 27 is a push switch 60, and when the flexible disk type launcher 26 is inserted into the card slot 92 of the notebook personal computer 91, the push switch 60 is pressed and the conductive switch section 202 on the substrate 201 is pressed. Conducts by contacting with. At this time, the push switch 60 is made of a conductive material, or a conductive material is applied to a portion in contact with the conductive switch unit 202. Flexible Disk Launcher 26
When the switch is pulled out, the push switch 60 receives the elastic recovery force of the spring 61 to recover and the conductive state is released.

An advantage of the second and third embodiments of the above-described firing switch 27 is that a thief removes the firing device 20 from the card slot 9.
When the launcher 20 stops emitting a signal to the receiver 30, the receiver 30 emits an alarm.

FIGS. 7 and 9 show the structure and function of the receiver 30. FIG. The receiver 30 is composed of an electronic circuit, and includes a circuit device including a decoder 32, a radio signal receiver 33, a receiving antenna 34, an alarm 34, a changeover switch 37, and a reception control unit 31 for controlling the above-described circuit. Among them, the changeover switch 37 is used to switch between a state where the anti-theft function of the receiver 30 is activated and a state where the power is turned off. The receiving antenna 34 receives the external radio signal and sends it to the radio signal receiver 33, and the decoder 32 decodes the received signal. The receiver 30 transmits the firing code 2 fired by the corresponding launcher 20 via the decoding of the decoder 32.
9 and the launcher 20 and the receiver 3
When all 0s are in the state of activation of the anti-theft function, the firing code 29 fired by the launcher 20 is not received by the receiver 30, that is, the alarm 35 of the receiver 30 emits an alarm signal. The alarm signal is determined by the function of the alarm device 35. For example, if the alarm device 35 is a buzzer, the alarm signal is sound, and if the alarm device 35 is provided with a vibrator, the alarm signal is vibrated and provided to the user 95. Notice.

[0015] In addition, the user 95 operates the notebook computer 9.
When the user forgets to put 1 or the notebook computer 91 is stolen, the changeover switch 37 can be switched to the search state so that the user 95 looks for the notebook computer 91. When the launcher 20 is in the activated state of the anti-theft function and the receiver 30 is in the search state, if the launch code 29 emitted by the launcher 20 is received by the receiver 30, the alarm 35 of the receiver 30 is activated. Generates an alarm signal. That is, the changeover switch 37 is switched between three states, namely, an anti-theft activation state, a search state, and a power-off state.

In order to make it easier for the user 95 to carry the receiver 30, a pocket 9 as shown in FIG.
6, it is possible to take the form of a pen clip type receiver 50 which is convenient to pinch it.

The above embodiments are provided for illustrating the features of the present invention, and do not limit the scope of the present invention. For example, the shape of the launcher of the present invention can be variously changed. Thus, it can be changed to, for example, a business card type, a memory card type, or an IC card type according to the design of the card slot of the electronic device to be combined. In addition, the point of the second and third embodiments of the firing switch of the present invention is to form an automatic on / off by inserting the electronic device into the card slot, but it is not limited to a special position and a special mechanism. The shape of the receiver is not the point of the present invention. Therefore, any design matter that does not depart from the functional structure of the present invention belongs to the claims of the present invention.

[0018]

The anti-theft device for an electronic device having a card slot according to the present invention does not require the user to remodel the electronic device having a card slot, and the launcher of the anti-theft device using the card slot directly. The receiver can alert the user when the distance between the electronic device having the card slot and the receiver exceeds a certain distance.

Furthermore, the anti-theft device for an electronic device having a card slot of the present invention has an anti-theft function even when the launcher of the anti-theft device is stolen.

[Brief description of the drawings]

FIG. 1 is a view showing a use state of the present invention.

FIG. 2 is an embodiment of the launcher of the present invention.

FIG. 3 is a view showing a first embodiment of a firing switch of the launcher according to the present invention.

FIG. 4 is a view of a second embodiment of the launch switch of the launcher of the present invention.

FIG. 5 is a third embodiment of the launch switch of the launcher of the present invention.

FIG. 6 is a partially enlarged view of the firing switch of FIG. 5;

FIG. 7 is an embodiment diagram of a receiver according to the present invention.

FIG. 8 is an electric circuit block diagram of the launcher of the present invention.

FIG. 9 is an electric circuit block diagram of the receiver of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Theft prevention device of the electronic device provided with a card slot 20 Launcher 201 Substrate 202 Conductive switch part 271 Elastic piece 21 Launch control unit 22 Encoder 23 Wireless signal launcher 24 Launch antenna 25 Flexible disk shell 26 Flexible disk launcher 261 Push piece 27 Launch Switch 28 Launch Sequence Circuit 29 Launch Code 30 Receiver 31 Reception Control Unit 32 Decoder 33 Radio Signal Receiver 34 Receiving Antenna 35 Alarm 37 Switching Switch 50 Pen Clip Receiver 60 Push Switch 61 Spring 90 Electronic with Card Slot Device anti-theft device 91 Laptop computer 92 Card slot 95 User 96 Pocket

Claims (4)

[Claims] 1. An anti-theft device used for preventing an electronic device having a card slot from being stolen, wherein the device is a launcher, the outside is a card-type shell, and is inserted into a card slot of an electronic device to be protected. The shell is provided with a firing switch for switching between an anti-theft function activation state and a power-off state of the launcher, and controls a circuit device including an encoder, a radio signal transmitter, and a launch antenna inside the shell and the circuit device. When the launcher is in the activated state of the anti-theft function, the launcher encodes a launch code with an encoder, and then launches as a wireless signal from a launch antenna via a wireless signal launcher. A circuit device including a decoder, a radio signal receiver, a receiving antenna, an alarm device, and a changeover switch, and a receiving device for controlling the circuit device. A control unit, wherein the changeover switch switches between a state where the anti-theft function of the receiver is activated or a state where the power is turned off, a receiving antenna receives an external radio signal, sends it to a radio signal receiver, and decodes it by a decoder. An anti-theft device for an electronic device having a card slot, comprising the above receiver. 2. The theft of an electronic device having a card slot according to claim 1, wherein the launcher further comprises a firing sequence circuit for controlling the number of firings of the firing code per unit time. Prevention device. 3. The changeover switch further has a function of switching the receiver to a search state, and when the launcher is in the anti-theft function activation state and the receiver is in this search state, the launcher fires. The apparatus according to claim 1, wherein an alarm device of the receiver generates an alarm signal when the fired code is received by the receiver. 4. The burglarproof electronic device with a card slot according to claim 1, wherein when the launcher is detached from the card slot of the electronic device to be protected, the firing switch is turned off. apparatus.