TWI526997B - Alarm apparatus - Google Patents

Description

Warning device

The present invention relates to an application of a warning device, and more particularly to a portable electronic device having a warning device.

Current portable electronic devices (for example, Notebook (abbreviated as NB), Ultra Mobile Personal Computer (UMPC), Personal Digital Assistant (PDA), and Mobile phones on the Internet...etc.] Because the price is not low, it is often stolen, and its small size and light weight also increase the success rate of theft.

In order to avoid the risk of being stolen when selling portable electronic products in the store, the electronic devices displayed in the general store or on the exhibition site will be equipped with a thin steel cable, and the locks will be used to lock the thin steel cables to the fixed objects such as the legs. It is used to limit the moving distance of the product to prevent theft of the product; even, there is an alarm connected with a buzzer and a battery. When the alarm is alarmed, if there is vibration or shaking, it will beep. Alarms, or when the thin steel cable is cut, can also cause a buzzer alarm to enhance the anti-theft effect on electronic products.

However, the use of locks to limit the anti-theft method of the range of movement of electronic products must It is necessary to perform complicated unlocking and unlocking actions to set or release the anti-theft function, so it is inconvenient to use.

The warning device of the present invention is suitable for a portable electronic device, which comprises a detecting unit and a connecting unit. The detecting unit includes a first data transmission pin, and the first data transmission pin is preset to a first potential. The connecting unit is configured to electrically connect the portable electronic device to the detecting unit. When the portable electronic device is electrically connected to the detecting unit via the connecting unit, the first data transmission pin is electrically connected to the second potential via the connecting unit, and the detecting unit enters the detecting mode. In the detection mode, the detecting unit issues an alarm prompt when the first data transmission pin is switched from the second potential to the first potential.

Based on the above, the present invention proposes a warning device, which can make the data transmission pin of the connection unit of the detection unit different in the state of being unconnected and connected to the portable electronic device by using the configuration setting of the specific connection unit. The potential is such that the detecting unit can determine whether the portable electronic device is removed by determining the potential change of the data transmission pin. Since the connection unit can be connected to the portable electronic device by using the connection port, or attached to the portable electronic device by the additional contact switch as a connection means, the connection type is basically not limited. The freedom of use of electronic devices. Therefore, when the portable electronic device of the present invention is applied to a display occasion, the maximum use space can be provided to the customer under the premise of taking into consideration the product.

In addition, when the warning device enters the alarm mode, in order to prevent the portable electronic device after being removed from being plugged back into the connection again, an attempt is made to cancel the alarm sound to conceal the criminal intention. In the case of the warning device of the present invention, even if the removed portable electronic device is connected back, the first data transmission pin of the detecting unit is changed from the first potential to the second potential, and the alarm sound will continue. The alarm must be released by the release button on the remote control or detection unit and the detection mode is re-entered.

The warning device of the case can be enabled/set/released by operating the control unit's control interface (such as the power button, the alarm volume knob) or by using the remote control, without the need for a complicated anti-theft lock. The unlocking and unlocking actions can be set or unlocked. At the same time, in order to ensure the power of the portable electronic device, the detecting unit has the function of charging the portable electronic devices, and in order to prevent the power outage condition, the detecting unit has the battery module to maintain the power to ensure the alarm function is normal, for the user. It is more convenient.

In order to make the above features and advantages of the present invention more comprehensible, the following embodiments are described in detail with reference to the accompanying drawings.

10, 30, 50, 70‧‧‧ portable electronic devices

52‧‧‧Mobile phones

54, 74‧‧ ‧ flat

72‧‧‧Base

100‧‧‧ warning device

110, 310, 510, 710‧ ‧ detection unit

112‧‧‧Power supply circuit

114‧‧‧Warning circuit

116‧‧‧Control circuit

118‧‧‧Low voltage detection circuit

119‧‧‧Volume adjustment circuit

120, 320, 520, 720‧‧‧ connection unit

130‧‧‧Signal receiving unit

140‧‧‧Remote unit

322, 522_1, 522_2, 722_1, 722_2‧‧‧ contact switch

324, 524‧‧‧Lighting module

ACP‧‧‧External AC power supply

BM‧‧‧ battery module

CA1, CA2‧‧‧ shell

CI‧‧‧ control interface

COB‧‧‧ raised body

GND‧‧‧ ground terminal

OP‧‧‧ openings

P_D-, P_D+‧‧‧ data transmission pin

P_GND‧‧‧ grounding pin

P_VBUS‧‧‧ power pin

TP, TP1, TP2‧‧‧ ports

FIG. 1A is a block diagram of a warning device according to an embodiment of the present invention.

FIG. 1B is a schematic structural diagram of a portable electronic device and a warning device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a circuit structure of a detecting unit according to an embodiment of the present invention.

FIG. 3 is a schematic circuit diagram of a connection unit of the first embodiment of the present invention.

4A-4C are schematic diagrams showing the use of the warning device of the connection unit of FIG.

FIG. 5 is a schematic circuit diagram of a connection unit of a second embodiment of the present invention.

Fig. 6 is a schematic view showing the use of the warning device of the connecting unit of Fig. 5.

FIG. 7 is a schematic circuit diagram of a connection unit of a third embodiment of the present invention.

Fig. 8 is a schematic view showing the use of the warning device of the connecting unit of Fig. 7.

In order to make the contents of the present case easier to understand, the following specific examples are examples in which the case can be implemented. In addition, wherever possible, the same elements, components, and steps in the drawings and embodiments are used to represent the same or similar components.

FIG. 1A is a block diagram of a warning device according to an embodiment of the present invention. FIG. 1B is a schematic structural diagram of a portable electronic device and a warning device according to an embodiment of the present invention. Referring to FIG. 1A and FIG. 1B simultaneously, the alert device 100 of the present embodiment is used in conjunction with the portable electronic device 10. The warning device 100 can be used to connect the portable electronic device 10, which can prevent the portable electronic device 10 from being stolen by detecting whether the portable electronic device 10 is removed or not, such as an alarm sound/brightness. Opportunity. The portable electronic device 10 can be, for example, a tablet computer, a mobile phone, or a notebook computer. The present invention is not limited thereto.

The alerting device 100 includes a detecting unit 110 and a connecting unit 120. The detecting unit 110 has at least one data transmission pin. The detecting unit 110 presets the voltage level of the data transmission pin (that is, in a state not connected to the portable electronic device 10) to a first potential (for example, a high potential).

The connecting unit 120 is used to electrically connect the portable electronic device 10 to the detecting unit 110, which is similar in physical structure to a connecting line whose length can be selected by the designer (as shown in FIG. 1B and FIG. 120). The connection unit 120 can be electrically connected to the data transmission pin of the detection unit 110, and the connection unit 120 and the portable electronic device 10 can be connected by a corresponding set of ports (such as TP1 and TP2) and / or contact switches (not shown) are electrically connected to each other.

In addition, the detecting unit 110 of the embodiment may further include a control interface CI, which can provide an interface for the user to set the manipulation function of the warning device 100. The user can control the operation of the alert device 100 through the control interface CI, for example, whether to turn on the alert function, adjust the alert volume, and other functions that can be controlled by the user. However, the invention is not limited to this.

In this embodiment, the internal circuit configuration of the connection unit 120 is subjected to a specific configuration (further described in the following embodiments), so that when the detection unit 110 is electrically connected to the portable electronic device 10 via the connection unit 120, the detection unit 110 The data transmission pin is electrically connected to the ground of the portable electronic device 10 via the connecting unit 120, so that the data transmission pin of the detecting unit 110 is pulled down from the preset first potential to the second potential (for example Is low potential / ground potential). When detecting that the data transmission pin is pulled from the first potential to the second potential, the detecting unit 110 enters/enables a detection mode to detect whether the portable electronic device 10 is removed, thereby determining whether to issue an alarm prompt. .

More specifically, when the detecting unit 110 is in the detecting mode, the data transmission pin of the detecting unit 110 is connected to the portable electronic device via the connecting unit 120. The connection 10 is connected to the ground GND, so whether the connection between the detecting unit 110 and the connecting unit 120 is disconnected, or the connecting unit 120 is disconnected from the portable electronic device 10, the original potential is pulled down to the second potential. The data transfer pin returns to the preset first potential. Therefore, the detecting unit 110 can determine whether the portable electronic device 10 is removed by detecting whether the data transmission pin is switched back from the second potential to the first potential, and when determining that the portable electronic device 10 is removed. An alarm is issued in the form of sound or sound combined with the light, thereby generating an anti-theft effect.

In this embodiment, since the connection unit 120 can be connected to the portable electronic device 10 or connected to the portable electronic device 10 as an connection means by using an additional contact switch, The degree of freedom of use of the portable electronic device 10 is not limited. When applied to display occasions, it can provide customers with the largest space for use while taking into account the products.

In the warning device 100 of the embodiment, the user only needs to enable/set/disarm the warning function through the control interface CI of the operation detecting unit 110 (for example, the power button and the alarm volume knob), instead of the traditional anti-theft function. Lock-like, you need to go through complicated opening and unlocking actions to set or release the anti-theft function.

In addition, the alerting device 100 of the present embodiment can also be selectively provided with the signal receiving unit 130 and the remote control unit 140. The signal receiving unit 130 can be, for example, a circuit module that can receive wired or wireless remote control signals, such as an infrared receiver or a radio frequency transceiver module or a line control switch. The remote control unit 140 can send a control signal (for example, a wireless signal such as an infrared signal or an RF signal, or a wired signal triggered by pressing the remote control switch). When the signal receiving unit 130 receives the remote control ticket After the remote control signal of the element 140, it transmits the received remote control signal to the detecting unit 110 as a basis for control, such as turning on/off the alarm prompt, or adjusting the volume of the alarm prompt.

A specific implementation example of the detecting unit in the warning device will be further described below with reference to the embodiment of FIG. 2. 2 is a schematic diagram of a circuit structure of a detecting unit according to an embodiment of the present invention.

Referring to FIG. 2, in the embodiment, the detecting unit 110 includes a connection port TP, a power supply circuit 112, a warning circuit 114, a control circuit 116, a low voltage detection circuit 118, and a volume adjustment circuit 119. The detection unit 110 is electrically connected to the connection unit 120 by using a connection 埠TP of the Universal Serial Bus (USB) interface, and the data transmission pin of the detection unit 110 can be connected.埠TP data transmission pin P_D-/P_D+ is implemented, but this case is not limited to this. In addition, the power pin P_VBUS and the ground pin P_GND may also be included in the port TP. The power pin P_VBUS is coupled to the power supply circuit 112. The data transfer pin P_D- and P_D+ are coupled to the control circuit 116. The ground pin P_GND is coupled to the ground GND of the detecting unit 110.

The power supply circuit 112 includes a battery module BM and can receive an external AC power source ACP (for example, a commercial power), and then convert the external AC power source ACP into a power source required for each circuit to operate. When the power supply circuit 112 is powered off by the external AC power source ACP, the power supply circuit 112 is powered by the battery module BM. The warning circuit 114 is coupled to the power supply circuit 112. The alert circuit 114 can be, for example, a buzzer or other circuit capable of emitting an alert such as a audible and/or bright light. The control circuit 116 is coupled to the connection port TP, The power supply circuit 112 and the warning circuit 114. The control circuit 116 presets the data transmission pin P_D- or P_D+ of the connection port TP to the first potential (for example, the high potential of the USB interface 5V), and detects the data transmission pin P_D preset to the first potential. - or the potential change of P_D+ to determine whether the portable electronic device 10 is removed, and then the warning circuit 114 is caused to issue an alarm prompt according to the result of the judgment.

It should be noted that, in the detection mode, when the warning circuit 114 has issued an alarm prompt, it must be released by the remote control unit or the setting detection unit 110. Therefore, if the portable electronic device 10 is connected at this time, The unit 120 is electrically connected to the detecting unit 110. Although the data transmission pin P_D- or P_D+ is switched from the first potential to the second potential, the alarm sound continues at this time to prevent the thief from being portable in order to eliminate the alarm sound. The electronic device is reconnected to the connection unit or the portable electronic device is replaced with another product.

For example, when the control circuit 116 presets that the data transfer pin P_D- is high (5V), when the control circuit 116 detects that the data transfer pin P_D- is pulled from the high potential to the ground potential (0V) The control circuit 116 determines that the portable electronic device 10 has been electrically connected to the detecting unit 110 by the connecting unit 120 to enter the detecting mode. In the detection mode, the control circuit 116 continuously detects whether the potential of the data transfer pin P_D- changes. If the control circuit 116 detects that the potential of the data transmission pin P_D- rises from the ground potential to the high potential, it indicates that the portable electronic device 10 may have been removed from the connection unit 120, so the control unit 116 will now The control alert circuit 114 issues an alert prompt to alert the user that the portable electronic device 10 has been removed.

In addition, in an exemplary embodiment, the alarm prompt may also be sent by the portable electronic device 10 itself under the control of the detecting unit 110. In this example embodiment, the alarm prompt sent by the portable electronic device 10 is also required to be released by the control of the detecting unit 110, and cannot be released by the portable electronic device 10 itself. However, the invention is not limited thereto.

In another exemplary embodiment, by detecting the power supply source of the power supply circuit 112, the detecting unit 110 of the embodiment can also implement an uninterruptable power supply (UPS) function to avoid the warning device in the event of power failure. 100 is the risk of failure. In detail, in this embodiment, the power supply circuit 112 can determine whether it has received the external AC power source ACP. When the power supply circuit 112 receives the external AC power source ACP, the power supply circuit 112 uses the external AC power source as a power source. On the contrary, when the power supply circuit 112 does not receive the external AC power supply ACP, it indicates that the utility power supply may have a problem. At this time, the power supply circuit 112 may switch to use the battery module BM as a main power supply source, thereby maintaining the warning device 100. working normally.

In addition, in this embodiment, the low voltage detecting circuit 118 can be used to detect whether the voltage of the battery module is lower than a critical value (which can be defined by the designer), and accordingly, the control warning circuit 114 issues an indication of the battery module BM power. Low low voltage prompt. The volume adjustment circuit 119 can be used to adjust the volume of the cue from the alert circuit 114. The volume adjustment circuit 119 can provide a manipulation interface such as a knob, and the user can control the volume adjustment circuit to adjust the volume of the alarm circuit 114 by using the manipulation interface. However, it should be noted that the low voltage detection circuit 118 and the sound described herein The quantity adjustment circuit 119 is optionally disposed in the detection unit 110, and the present invention is not limited thereto.

The specific embodiment of the connection unit in the warning device will be further described below with reference to the embodiment of FIG. 3 to FIG. 8.

Please refer to FIG. 3 first. FIG. 3 is a schematic diagram of the circuit structure of the connection unit according to the first embodiment of the present invention. In the embodiment, the connection unit 320 includes a connection port TP1, a housing CA1, a contact switch 322, and a light-emitting module 324. The connection port TP1 is adapted to be electrically connected to the detecting unit 310 and is electrically connected to the connection port TP2 of the portable electronic device 30. The connection port TP1 of the first electronic connection unit 320 and the connection port TP2 of the portable electronic device 30 are also exemplified by a USB interface, which may respectively include a power pin P_VBUS and a data transmission pin P_D corresponding to each other. With P_D+ and ground pin P_GND. Although not shown here, the connection unit 320 and the detection unit 310 may also have the same transmission interface connection, and may be electrically connected to each other, or may also be embedded to form the detection unit 310 and the connection port TP1. The electrical connection path between the two is not limited to this case.

In addition, it should be noted that, in the implementation example of the connection between the electrical connection detection unit 310 and the connection unit 320 having the same transmission interface, the present invention does not limit the connection between the groups to be all the same or all different. Transport interface. In practical applications, as long as the connection between the detecting unit 310 and the connecting unit 320 applies the same transmission interface, and the connection between the connecting unit 320 and the portable electronic device 30 (such as TP1 and TP2) is the same application. The transmission interface, the warning device can operate normally. For example, the connection between the detecting unit 310 and the connecting unit 320 and the ports TP1 and TP2 may both be USB interfaces, but the present invention is not limited thereto.

The connection between the ports TP1 and TP2 can be mechanically connected by the housings CA1 and CA2. 3 is a diagram showing that the connection port TP1 is a male connecting port, and the connection port TP2 is a female connecting port. However, the present invention is not limited thereto.

In the present embodiment, the housing CA1 as the connection mechanism between the ports TP1 and TP2 has an opening OP such that the ground pin P_GND of the port TP1 is electrically independent of the case CA1 (ie, the port TP1 is connected). The ground pin P_GND is preset to be ungrounded). In other words, in the configuration in which the portable electronic device 30 is not connected to the connection unit 320, the housing CA1 of the connection unit 320 is preset to a floating state, wherein the floating state is represented as a state without a reference potential. When the portable electronic device 30 is connected to the connection unit 320, the ground pin P_GND of the connection port TP1 is grounded through the case CA2. It should be noted here that the present invention is not limited to the feature that the housing CA1 is preset to be in a floating state by providing an opening in the casing CA1, and any other feasible circuit configuration can also be applied thereto.

The contact switch 322 is connected in series between the data transmission pin P_D- of the detecting unit 310 and the casing CA1, and may be, for example, a mechanically controlled switch such as a dome switch. In the circuit configuration in which the contact switch 322 is turned on, the casing CA1 contacts the casing CA2, so that the ground pin P_GND of the port TP2 and the data transfer pin P_D- of the detecting unit 310 are short-circuited to have equal potentials. On the contrary, in the circuit configuration in which the contact switch 322 is turned off, the potential of the casing CA1 is in a preset floating state.

The connection port TP1 and the power pin P_VBUS of the detecting unit 310 are electrically connected to each other to provide a power transmission path for the power of the detecting unit 310 to pass through. The power transmission path is provided for use by the portable electronic device 30.

The light emitting module 324 is electrically connected to the power pin P_VBUS of the port TP1. When the connection unit 320 is connected to the detection unit 310 and the portable electronic device 30 via the ports TP1 and TP2, the light-emitting module 324 is turned on and lights up, thereby indicating that the warning device is in the detection state at this time. The light emitting module 324 can be composed of, for example, a light emitting diode and a resistor, but the present invention is not limited thereto.

The data transfer pins P_D- and P_D+ of the first port TP1 are configured to be short-circuited in this embodiment. With this configuration, when connected to the connection unit 320, the portable electronic device 30 can enter the fast charge mode in response to the short-circuited data transmission pins P_D- and P_D+, thereby improving the charging efficiency of charging by the detecting unit 310. .

The configuration and operation of the warning device will be further described below using the schematic diagram of the warning device shown in FIG. 4A to FIG. 4C. In the embodiment, the portable electronic device 30 is a mobile phone as an example, but the present invention is not limited thereto.

Referring to FIG. 3 and FIG. 4A simultaneously, when the user connects the detecting unit 310 and the mobile phone 30 through the connecting unit 320, the mobile phone 30 and the connecting unit 320 are connected to each other by corresponding ports TP1 and TP2.

On the other hand, as shown in FIG. 4B, the contact switch 322 has, for example, a convex mechanism COB. The raised mechanism COB is movably disposed on the contact switch 322, which generates a displacement amount in response to the physical force applied thereto. Wherein, the contact switch 322 is turned on when the displacement amount of the convex mechanism COB is greater than or equal to a preset threshold value (selectable by the designer), and the displacement amount of the COB in the convex mechanism is smaller than the The threshold is cut off. In the present embodiment, the contact switch 322 can be attached to the surface of the mobile phone 30 to cause the protrusion mechanism COB to generate a displacement amount exceeding the threshold value, thereby turning on the contact switch 322.

Next, as shown in FIG. 4C, after the corresponding ports TP1 TP TP2 are electrically connected to each other and the touch switch 322 is attached to the surface of the mobile phone 30 (for example, attached to the back cover of the mobile phone 30) From the point of view of the circuit configuration of FIG. 3, the data transmission pin P_D- of the detecting unit 310 is electrically connected via the contact switch 322, the data transmission pin P_D- connected to the 埠TP1, and the housing CA1 and the housing CA2. Connect to the ground GND of the mobile phone 30. Therefore, the potential on the data transfer pin P_D- of the detecting unit 310 is pulled from the high potential to the ground potential, so that the detecting unit 310 switches to the detection mode in response to the potential switching on the data transfer pin P_D-.

In the detection mode (ie, as configured in FIG. 4C), once anyone removes the connection 埠TP1 of the connection unit 320 from the mobile phone 30, or moves the contact switch 322 away from the back cover of the mobile phone 30, The short circuit path established by the contact switch 322 and the housing CA1 is disconnected, so that the potential of the data transfer pin P_D- of the port TP1 is returned to the high level. At this time, the detecting unit 310 will issue an alarm prompt to remind someone that the mobile phone 30 is about to sneak.

Please refer to FIG. 5 , which is a schematic diagram of the circuit structure of the connection unit according to the second embodiment of the present invention. In this embodiment, the connecting unit 520 includes a connection port TP1, a housing CA1, a plurality of contact switches (such as 522_1 and 522_2), and a light emitting module 524. The connection unit 520 of the present embodiment is substantially the same in architecture and operation as the connection unit 320 of the foregoing embodiment. The main difference between the two is the connection unit of this embodiment. 520 includes a plurality of contact switches 522_1 and 522_2 connected in series.

In detail, in an application, the configuration of the connection unit 520 of the present embodiment is applicable to, for example, a tablet mobile phone: a portable electronic device 50 in which a mobile phone can be combined with a tablet computer. As shown in the schematic diagram of FIG. 6, if the portable electronic device 50 is a tablet mobile phone, it includes a mobile phone 52 and a tablet 54. In the architecture of the connection unit 520 of the present embodiment, the connection port TP1 of the connection unit 520 can be electrically connected to the connection port TP2 of the mobile phone 52 and the contact switch 522_1 can be attached to the back cover of the mobile phone 52 (but not This is limited). On the other hand, the contact switch 522_2 can be attached to the back cover of the tablet (but not limited thereto). With this configuration, the data transmission pin P_D- of the detecting unit 510 is electrically connected to the ground of the tablet 50 via the contact switches 522_1, 522_2, the data transmission pin P_D of the connection port TP1, and the housings CA1 and CA2. Terminal GND. Therefore, the potential on the data transfer pin P_D- of the connection port TP1 is pulled from the high potential to the ground potential, so that the detection unit 510 switches to the detection mode in response to the potential switching on the data transfer pin P_D-.

In the detection mode (ie, as configured in FIG. 6), the contact switch 522_1 on the handset 52 of the tablet 50 or the contact switch 522_2 on the tablet 54 is removed, or the connection TP1 of the connection unit 520 is When the person is removed, the short circuit path established by the contact switches 522_1, 522_2 and the casing CA1 is disconnected, so that the potential of the data transmission pin P_D- of the detecting unit 510 is switched to issue an alarm prompt. Based on the configuration of the connection unit 520 of the embodiment, the warning device of the embodiment can implement a relatively comprehensive anti-theft/mechanism for the portable electronic device 50 of the tablet type.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of a circuit structure of a connection unit according to a third embodiment of the present invention. In the present embodiment, the connection unit 720 includes a plurality of contact switches (such as 722_1 and 722_2). The main difference between this embodiment and the foregoing embodiment is that the connection unit 720 is connected to the portable electronic device 70 only by the contact switches 722_1 and 722_2 connected in series without an additional connection port. The contact switches 722_1 and 722_2 are connected in series between the data transmission pin P_D- and the ground pin P_GND of the detecting unit 710. In the configuration in which the contact switches 722_1 and 722_2 are both turned on, the data transmission pin P_D- of the detecting unit 710 is short-circuited to the ground pin P_GND via the contact switches 722_1 and 722_2, thereby making the data of the detecting unit 710 The transfer pin P_D- is pulled down from the preset high potential to the ground potential. In other words, in the present embodiment, although the connection unit 720 is only connected by the contact switches 722_1 and 722_2 and the portable electronic device 70, it can also implement the data of the detection detecting unit 710 as described in the foregoing embodiment. The function of transmitting the pin position P_D- is used to determine whether the portable electronic device 70 is electrically separated from the connection unit 720.

In detail, in an application, the configuration of the connection unit 720 of the present embodiment is applicable to a notebook computer or a deformer pad: a portable electronic device in which the cradle can be separated from the touch screen. As shown in the schematic diagram of FIG. 8, if the portable electronic device 70 is a deformed tablet computer, it includes a base 72 and a flat plate 74. Under the architecture of the connection unit 720 of the present embodiment, the contact switch 722_1 of the connection unit 720 can be attached to the back cover of the flat plate 74. On the other hand, the contact switch 722_2 can be attached to the base portion 72. With this configuration, the data transmission pin P_D of the detecting unit 710 passes through the data transmission pin of the connection unit 720. The bit P_D- is electrically connected to the contact switch 722_1, 722_2 to the ground pin P_GND of the detecting unit 710. Therefore, the potential on the data transfer pin P_D- of the detecting unit 710 is pulled from the high potential to the ground potential, so that the detecting unit 710 switches to the detection mode in response to the potential switching on the data transfer pin P_D-.

In the detection mode (ie, as configured in FIG. 8), whether the contact switch 722_2 on the base 72 of the deformed tablet 70 or the contact switch 722_1 on the flat plate 74 is removed, the contact switch is enabled. The short circuit path established by 722_1 and 722_2 is disconnected, so that the potential of the data transmission pin P_D- of the detecting unit 710 is switched to issue an alarm prompt. Therefore, with the configuration of the connection unit 720 of the embodiment, the warning device of the embodiment can implement a relatively comprehensive anti-theft/mechanism for the portable electronic device 70 of the deformed tablet type.

In summary, the present invention proposes a warning device that can utilize different configuration settings of the connection unit to make the data transmission pin of the detection unit have different potentials in a state where the connection and the portable electronic device are not connected. Therefore, the detecting unit can determine whether the portable electronic device is removed by determining the potential change of the data transmission pin. Since the connection unit can be connected to the portable electronic device by using the connection port, or attached to the portable electronic device by the additional contact switch as a connection means, the connection type is basically not limited. The freedom of use of electronic devices. Therefore, when the warning device of the present case is applied to a display occasion, the maximum use space can be provided to the customer under the premise of taking into consideration the product. In addition, the warning device of the present case only needs to enable/set/unlock the anti-theft function by operating the control unit's control interface (such as the power button and the alarm volume knob), without the need for a traditional anti-theft lock. The open opening and unlocking actions can be set or unlocked. It is more convenient for the user.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present case. Any person having ordinary knowledge in the technical field can protect the case without making any changes or refinements without departing from the spirit and scope of the present case. The scope is subject to the definition of the scope of the patent application.

10‧‧‧Portable electronic devices

100‧‧‧ warning device

110‧‧‧Detection unit

120‧‧‧ Connection unit

CI‧‧‧ control interface

GND‧‧‧ ground terminal

Claims (16)

A warning device is adapted to be a portable electronic device. The warning device includes: a detecting unit, including a first data transmission pin, and the first data transmission pin is preset to a first potential; and a The connecting unit is electrically connected to the detecting unit, wherein the connecting unit includes a first connecting port; wherein, when the first connecting port of the connecting unit is connected to the second port of the portable electronic device, the first The data transmission pin is electrically connected to a second potential via the connection unit, and causes the detection unit to enter a detection mode, wherein in the detection mode, if the first connection port and the second connection port are The detecting unit sends an alarm prompt when the first data transmission pin switches from the second potential to the first potential. The warning device of claim 1, wherein the first port has a second data transmission pin and a ground pin. The warning device of claim 2, wherein the second port has a third data transmission pin, and the third data transmission pin of the second port and the second port of the first port The data transmission pins correspond to each other. The warning device of claim 3, wherein the connecting unit further comprises: a casing as a connecting mechanism between the first connecting port and the second connecting port, and the first connection When the second connection port is electrically connected to the second port, the ground pin of the first port is electrically connected to the ground of the portable electronic device. The warning device of claim 4, wherein the housing has an opening, and the grounding pin of the first connecting port is electrically independent of the housing. The warning device of claim 4, wherein the connecting unit further comprises: a contact switch electrically connected between the first data transmission pin of the detecting unit and the housing, wherein The first connection is electrically connected to the detection unit, and when the contact switch is turned on, the first data transmission pin of the detection unit is electrically connected to the portable electronic device via the contact switch and the housing The grounding end of the device, so that the detecting unit enters the detecting mode. The warning device of claim 6, wherein the contact switch has a convex mechanism, and the contact switch is turned on when a displacement of the convex mechanism is greater than or equal to a threshold value, and the protrusion is When the displacement of the mechanism is less than the threshold value, it is cut off. The warning device of claim 2, wherein the first port further has a power pin and a fourth data transfer pin, and the portable electronic device is electrically connected to the Detector via the connecting unit. When the unit is tested, the detecting unit supplies power to the portable electronic device via the power pin. The warning device of claim 8, wherein the second material transfer pin of the first port is short-circuited with the fourth data transfer pin. The warning device of claim 2, wherein the connecting unit comprises: The plurality of contact switches are electrically connected between the first data transmission pin of the detecting unit and the ground pin of the first port. The warning device of claim 1, wherein the detecting unit comprises: a power supply circuit, comprising a battery module for generating power required for operation of the detecting unit; and a warning circuit coupled The power supply circuit is configured to send the alarm prompt; and a control circuit is coupled to the power supply circuit, the warning circuit, and the first port to detect the first data transmission pin of the first port The potential changes and is used to control the warning circuit. The warning device of claim 11, wherein when the power supply circuit receives an external AC power source, the power supply circuit uses the external AC power source as a power source, and when the power supply circuit does not receive In the external AC power supply, the power supply circuit uses the battery module as the power supply source. The warning device of claim 11, wherein the detecting unit further comprises: a low voltage detecting circuit for detecting whether the voltage of the battery module is lower than a critical value, and controlling the The warning circuit issues a low voltage prompt. The warning device of claim 11, wherein the detecting unit further comprises: a volume adjusting circuit for adjusting the volume of the prompt issued by the warning circuit. The warning device of claim 1, further comprising: a remote control unit for controlling to generate a remote control signal; and a signal receiving unit coupled to the detecting unit to receive the remote control signal and transmit the remote control signal to The detection unit serves as a basis for control. The warning device of claim 1, wherein the detecting unit further comprises: a control interface for setting a control function of the warning device.